# Healer\+ \- Rugged Modular Security Toolkit e4b4 ec58

## Description

Battery\-powered modular ESP32\-S3 field toolkit for authorized NFC, sub\-GHz, infrared, USB, and wired hardware debugging experiments, developed first as a serviceable proof of concept and later as a sealed handheld\.

## Project Details

- **Owner:** macswim
- **Created:** 9/26/2026
- **Last Updated:** 9/27/2026
- **Visibility:** Public

## Key Components

### D1 — [USBLC6\-2SC6](https://flux.ai/vasy_skral/usblc6-2sc6~g1b.md)

- Role Details: Low\-capacitance protection at USB\-C connector
- Manufacturer Part Number: USBLC6\-2SC6
- Role: ESD Protection
- Symbol Style: parametric\-v1
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Protection
- Functional Group: USB\-C Input and Native USB
- Manufacturer Name: STMicroelectronics
- Datasheet URL: https://www\.st\.com/content/ccc/resource/technical/document/datasheet/06/1d/48/9c/6c/20/4a/b2/CD00050750\.pdf/files/CD00050750\.pdf/jcr:content/translations/en\.CD00050750\.pdf
- LCSC Part Number: C7519

**Pins:**
- GND [pin 2]
- I/O1 [pin 6]
- I/O1 [pin 1]
- I/O2 [pin 3]
- I/O2 [pin 4]
- VBUS [pin 5]

### D2 — [TPD4E05U06DQAR](https://flux.ai/jharwinflux/tpd4e05u06dqar~rl.md)

- Manufacturer Name: Texas Instruments Inc\.
- Role Details: Connector\-side multi\-channel IEC ESD arrays
- Manufacturer Part Number: TPD4E05U06DQAR
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Diode
- Functional Group: Protected Wired Debug,Expansion and Test
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tpd4e05u06\.pdf
- Role: ESD Protection

**Pins:**
- D1\- [pin 2]
- D1\+ [pin 1]
- D2\- [pin 5]
- D2\+ [pin 4]
- GND\_1 [pin 3]
- GND\_2 [pin 8]
- NC\_1 [pin 6]
- NC\_2 [pin 7]
- NC\_3 [pin 9]
- NC\_4 [pin 10]

### D3 — [TPD4E05U06DQAR](https://flux.ai/jharwinflux/tpd4e05u06dqar~rl.md)

- Manufacturer Name: Texas Instruments Inc\.
- Manufacturer Part Number: TPD4E05U06DQAR
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Connector\-side multi\-channel IEC ESD arrays
- Functional Group: Protected Wired Debug,Expansion and Test
- Part Type: Diode
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tpd4e05u06\.pdf
- Role: ESD Protection

**Pins:**
- D1\- [pin 2]
- D1\+ [pin 1]
- D2\- [pin 5]
- D2\+ [pin 4]
- GND\_1 [pin 3]
- GND\_2 [pin 8]
- NC\_1 [pin 6]
- NC\_2 [pin 7]
- NC\_3 [pin 9]
- NC\_4 [pin 10]

### D4 — [TPD4E05U06DQAR](https://flux.ai/jharwinflux/tpd4e05u06dqar~rl.md)

- Manufacturer Name: Texas Instruments Inc\.
- Role: ESD Protection
- Manufacturer Part Number: TPD4E05U06DQAR
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Connector\-side multi\-channel IEC ESD arrays
- Functional Group: Protected Wired Debug,Expansion and Test
- Part Type: Diode
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tpd4e05u06\.pdf

**Pins:**
- D1\- [pin 2]
- D1\+ [pin 1]
- D2\- [pin 5]
- D2\+ [pin 4]
- GND\_1 [pin 3]
- GND\_2 [pin 8]
- NC\_1 [pin 6]
- NC\_2 [pin 7]
- NC\_3 [pin 9]
- NC\_4 [pin 10]

### D5 — [15412094A9000](https://flux.ai/silicon-yard/15412094a9000.md)

- Manufacturer Part Number: 15412094A9000
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/53c9edfe71c5f8f327c5116ac4182d28ccdf3842e792c63b8f6b4134d51078e8\.pdf
- Functional Group: Infrared
- Manufacturer Name: Würth
- Role: IR Emitter
- Part Type: Optoelectronic Devices
- Role Details: Pulsed MOSFET\-driven emitter; conservative current below pulse rating pending validation
- Mount: Surface Mount

**Pins:**
- \- [pin 2]
- \+ [pin 1]

### F2 — [0451004\.MRL](https://flux.ai/adrian95/0451004pmrl~edp.md)

- Part Type: Fuse
- Role: Battery Fuse
- Role Details: 4 A fast\-acting pack A protection; full system peak is approximately 2\.9 A
- Manufacturer Part Number: 0451004\.MRL
- Manufacturer Name: Littelfuse Inc\.
- Functional Group: POWER U28 Dual Battery Mux
- Datasheet URL: https://www\.littelfuse\.com/assetdocs/littelfuse\-fuse\-451\-453\-datasheet?assetguid=533cd5cc\-956c\-4243\-867f\-6ab5a62f6ba1
- Current Rating: 4A
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### F3 — [0451004\.MRL](https://flux.ai/adrian95/0451004pmrl~edp.md)

- Part Type: Fuse
- Manufacturer Part Number: 0451004\.MRL
- Manufacturer Name: Littelfuse Inc\.
- Functional Group: POWER U28 Dual Battery Mux
- Role Details: 4 A fast\-acting pack B protection; full system peak is approximately 2\.9 A
- Datasheet URL: https://www\.littelfuse\.com/assetdocs/littelfuse\-fuse\-451\-453\-datasheet?assetguid=533cd5cc\-956c\-4243\-867f\-6ab5a62f6ba1
- Role: Battery Fuse
- Current Rating: 4A
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### J1 — [USB4105\-GF\-A](https://flux.ai/adrian95/usb4105-gf-a~im9.md)

- Part Type: USB C
- License: https://creativecommons\.org/licenses/by/4\.0/
- Symbol Style: parametric\-v1
- Role Details: USB 2\.0 sink/device only; separate switched 5 V expansion output
- Role: USB\-C Device Port
- Functional Group: USB\-C Input and Native USB
- Manufacturer Name: GCT
- Manufacturer Name: GCT
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/c2c7fba82d64960d510c5688ccda39e92973a3ef64f0758ccd8dce8a07cbda76\.pdf
- Manufacturer Part Number: USB4105\-GF\-A

**Pins:**
- CC1 [pin A5]
- CC2 [pin B5]
- DN1 [pin A7]
- DN2 [pin B7]
- DP1 [pin A6]
- DP2 [pin B6]
- GND [pin A1\_B12]
- GND\_\_1 [pin B1\_A12]
- SBU1 [pin A8]
- SBU2 [pin B8]
- SHELL\_GND [pin SH1]
- SHELL\_GND\_\_1 [pin SH2]
- SHELL\_GND\_\_2 [pin SH3]
- SHELL\_GND\_\_3 [pin SH4]
- VBUS [pin A4\_B9]
- VBUS\_\_1 [pin B4\_A9]

### J10 — [Pin Header 01x03 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-01x03-254mm-vertical~cp4.md)

- Role Details: Three\-position header logic: center is TPS2553 enable, one side forces OFF to GND, other side permits firmware\-controlled 5V target power
- Role: Guarded Target Power Selector
- Functional Group: Protected Wired Debug
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- Pin\_1 [pin 1]
- Pin\_2 [pin 2]
- Pin\_3 [pin 3]

### J11 — [Pin Header 01x03 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-01x03-254mm-vertical~cp4.md)

- Role: Sensing \(Shunt\)
- Functional Group: Power Input and Charging
- Part Type: Connector
- Role Details: External 10k NTC battery temperature connection; center is TS sense
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- Pin\_1 [pin 1]
- Pin\_2 [pin 2]
- Pin\_3 [pin 3]

### J12 — [B3B\-XH\-A\(LF\)\(SN\)](https://flux.ai/lcsc/b3b-xh-alfsn~wvza.md)

- Package or Case Code: CONN\-TH\_3P\-P2\.50\_A2501WV2\-3P
- Connector Positions: 3
- Manufacturer Part Number: B3B\-XH\-A\(LF\)\(SN\)
- JLCPCB Part Class: Extended Part
- Role: Battery Bay Connector
- Connector Rows: 1
- Role Details: Keyed 3\-pin protected 1S Li\-ion pack A: PACK\+, GND, presence contact
- Product Info Url: https://lcsc\.com/product\-detail/XH\-Connectors\_JST\-Sales\-America\_B3B\-XH\-A\-LF\-SN\_JST\-Sales\-America\-B3B\-XH\-A\-LF\-SN\_C144394\.html
- Current Rating: 3A
- Manufacturer Name: JST
- Voltage Rating: 250V
- Functional Group: POWER U28 Dual Battery Mux
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_JST\-B3B\-XH\-A\-LF\-SN\_C144394\.pdf
- Operating Temperature: \-25°C \~ 85°C
- Part Type: Wire To Board / Wire To Wire Connector
- LCSC Part Number: C144394
- Connector Pitch: 2\.50mm
- Connector Type: Headers and Wire Housings

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]

### J13 — [B3B\-XH\-A\(LF\)\(SN\)](https://flux.ai/lcsc/b3b-xh-alfsn~wvza.md)

- Package or Case Code: CONN\-TH\_3P\-P2\.50\_A2501WV2\-3P
- Connector Positions: 3
- Manufacturer Part Number: B3B\-XH\-A\(LF\)\(SN\)
- JLCPCB Part Class: Extended Part
- Role Details: Keyed 3\-pin protected 1S Li\-ion pack B: PACK\+, GND, presence contact
- Connector Rows: 1
- Functional Group: POWER U28 Dual Battery Mux
- Product Info Url: https://lcsc\.com/product\-detail/XH\-Connectors\_JST\-Sales\-America\_B3B\-XH\-A\-LF\-SN\_JST\-Sales\-America\-B3B\-XH\-A\-LF\-SN\_C144394\.html
- Current Rating: 3A
- Manufacturer Name: JST
- Voltage Rating: 250V
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_JST\-B3B\-XH\-A\-LF\-SN\_C144394\.pdf
- Role: Battery Bay Connector
- Operating Temperature: \-25°C \~ 85°C
- Part Type: Wire To Board / Wire To Wire Connector
- LCSC Part Number: C144394
- Connector Pitch: 2\.50mm
- Connector Type: Headers and Wire Housings

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]

### J14 — [B4B\-XH\-A\(LF\)\(SN\)](https://flux.ai/lcsc/b4b-xh-alfsn~so1x.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_JST\-B4B\-XH\-A\-LF\-SN\_C144395\.pdf
- Connector Type: Wire\-to\-board Header
- Manufacturer Name: JST
- Role: Emergency Isolation Interface
- Product Info Url: https://lcsc\.com/product\-detail/\_JST\-Sales\-America\_B4B\-XH\-A\-LF\-SN\_JST\-Sales\-America\-B4B\-XH\-A\-LF\-SN\_C144395\.html
- JLCPCB Part Class: Extended Part
- Part Type: Wire To Board / Wire To Wire Connector
- Positions: 4
- Manufacturer Part Number: B4B\-XH\-A\(LF\)\(SN\)
- Functional Group: POWER U28 Dual Battery Mux
- Package or Case Code: CONN\-TH\_B4B\-XH\-A\-LF\-SN
- Rows: 1
- LCSC Part Number: C144395
- Gender: Male
- Role Details: External guarded DPST maintained switch closes both TPS2121 OV shutdown loops
- Pitch: 2\.5mm

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]

### J15 — [B2B\-PH\-K\-S](https://flux.ai/adrian95/b2b-ph-k-s~fx.md)

- Role: Speaker Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Keyed differential output for an 8 ohm speaker; do not connect either lead to ground
- Part Type: Connector
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/ePH\.pdf
- Symbol Style: parametric\-v1
- Package or Case Code: JST\_B2B\-PH\-K\-S
- Functional Group: AUDIO U34 Speaker Amplifier
- Manufacturer Part Number: B2B\-PH\-K\-S
- Manufacturer Name: JST

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J16 — [SM10B\-GHS\-TB\(LF\)\(SN\)](https://flux.ai/adrian95/sm10b-ghs-tblfsn~y53.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Connectors
- Role: Storage Bay Connector
- Manufacturer Name: JST
- Mount: Surface Mount
- Symbol Style: parametric\-v1
- Manufacturer Part Number: SM10B\-GHS\-TB\(LF\)\(SN\)
- Datasheet URL: https://www\.mouser\.tw/datasheet/3/1070/1/eGH\.pdf
- Functional Group: STORAGE U35 Removable Bay
- Role Details: Keyed internal removable\-storage expansion connector

**Pins:**
- 1 [pin 1]
- 10 [pin 10]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]
- MP\_1 [pin 11]
- MP\_2 [pin 12]

### J3 — [DM3AT\-SF\-PEJM5](https://flux.ai/adrian95/dm3at-sf-pejm5~p1p.md)

- Role Details: SPI\-mode microSD with safe CS pull\-up and switched rail
- License: https://creativecommons\.org/licenses/by/4\.0/
- Symbol Style: parametric\-v1
- Manufacturer Part Number: DM3AT\-SF\-PEJM5
- Manufacturer Name: Hirose Electric Co Ltd
- Datasheet URL: https://www\.mouser\.com/datasheet/2/185/DM3AT\_SF\_PEJM5\_CL0609\_0031\_0\_00\_2DDrawing\_00009471\-1614303\.pdf
- Role: Storage Connector
- Part Type: Connector
- Functional Group: microSD

**Pins:**
- \~ [pin SWA]
- \~ [pin SWB]
- CD/DAT3 [pin 2]
- CLK [pin 5]
- CMD [pin 3]
- DAT0 [pin 7]
- DAT1 [pin 8]
- DAT2 [pin 1]
- SHIELD [pin P3]
- SHIELD [pin P4]
- SHIELD [pin P1]
- SHIELD [pin P2]
- VDD [pin 4]
- VSS [pin 6]

### J4 — [Pin Header 02x10 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md)

- Role Details: 3\.3 V switched power, SPI/I2C, IRQ and reset; antenna remains on module
- Functional Group: NFC Module
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Connector
- Role: NFC Module Header

**Pins:**
- Pin\_1 [pin 1]
- Pin\_10 [pin 10]
- Pin\_11 [pin 11]
- Pin\_12 [pin 12]
- Pin\_13 [pin 13]
- Pin\_14 [pin 14]
- Pin\_15 [pin 15]
- Pin\_16 [pin 16]
- Pin\_17 [pin 17]
- Pin\_18 [pin 18]
- Pin\_19 [pin 19]
- Pin\_2 [pin 2]
- Pin\_20 [pin 20]
- Pin\_3 [pin 3]
- Pin\_4 [pin 4]
- Pin\_5 [pin 5]
- Pin\_6 [pin 6]
- Pin\_7 [pin 7]
- Pin\_8 [pin 8]
- Pin\_9 [pin 9]

### J5 — [Pin Header 02x10 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md)

- Functional Group: Sub\-GHz Module
- Role: Sub\-GHz Module Header
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: 3\.3 V switched power, SPI and IRQ/control; antenna handled by module
- Part Type: Connector

**Pins:**
- Pin\_1 [pin 1]
- Pin\_10 [pin 10]
- Pin\_11 [pin 11]
- Pin\_12 [pin 12]
- Pin\_13 [pin 13]
- Pin\_14 [pin 14]
- Pin\_15 [pin 15]
- Pin\_16 [pin 16]
- Pin\_17 [pin 17]
- Pin\_18 [pin 18]
- Pin\_19 [pin 19]
- Pin\_2 [pin 2]
- Pin\_20 [pin 20]
- Pin\_3 [pin 3]
- Pin\_4 [pin 4]
- Pin\_5 [pin 5]
- Pin\_6 [pin 6]
- Pin\_7 [pin 7]
- Pin\_8 [pin 8]
- Pin\_9 [pin 9]

### J6 — [2\.54\-2\*8P针](https://flux.ai/lcsc/2p54-28p~axke.md)

- Datasheet URL: https://www\.lcsc\.com/datasheet/C779499\.pdf?spm=wm\.sxq\.inf\.ggs&lcsc\_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1JcVFdURlJdUTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D
- License: https://creativecommons\.org/licenses/by/4\.0/
- Symbol Style: parametric\-v1
- LCSC Part Number: C779499
- Functional Group: Display and Controls
- Manufacturer Name: BOOMELE\(博穆精密\)
- Manufacturer Part Number: 2\.54\-2\*8P针
- Role Details: Switched display rail, independent backlight enable, SPI and button inputs
- JLCPCB Part Class: Extended Part
- Part Type: Pin Headers
- Role: Display and Keypad Header
- Package or Case Code: HDR\-TH\_16P\-P2\.54\-V\-M\-R2\-C8\-S2\.54

**Pins:**
- 1 [pin 1]
- 10 [pin 10]
- 11 [pin 11]
- 12 [pin 12]
- 13 [pin 13]
- 14 [pin 14]
- 15 [pin 15]
- 16 [pin 16]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]

### J7 — [Pin Header 02x10 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Protected Wired Debug
- Part Type: Connector
- Role Details: UART, I2C, SPI, GPIO, GND, VTGT sense and separately current\-limited 5 V output
- Role: Target Debug Header

**Pins:**
- Pin\_1 [pin 1]
- Pin\_10 [pin 10]
- Pin\_11 [pin 11]
- Pin\_12 [pin 12]
- Pin\_13 [pin 13]
- Pin\_14 [pin 14]
- Pin\_15 [pin 15]
- Pin\_16 [pin 16]
- Pin\_17 [pin 17]
- Pin\_18 [pin 18]
- Pin\_19 [pin 19]
- Pin\_2 [pin 2]
- Pin\_20 [pin 20]
- Pin\_3 [pin 3]
- Pin\_4 [pin 4]
- Pin\_5 [pin 5]
- Pin\_6 [pin 6]
- Pin\_7 [pin 7]
- Pin\_8 [pin 8]
- Pin\_9 [pin 9]

### J8 — [Pin Header 02x10 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Expansion Header
- Role Details: Major rails, shared buses, spare GPIO and enable controls
- Functional Group: Expansion and Test
- Part Type: Connector

**Pins:**
- Pin\_1 [pin 1]
- Pin\_10 [pin 10]
- Pin\_11 [pin 11]
- Pin\_12 [pin 12]
- Pin\_13 [pin 13]
- Pin\_14 [pin 14]
- Pin\_15 [pin 15]
- Pin\_16 [pin 16]
- Pin\_17 [pin 17]
- Pin\_18 [pin 18]
- Pin\_19 [pin 19]
- Pin\_2 [pin 2]
- Pin\_20 [pin 20]
- Pin\_3 [pin 3]
- Pin\_4 [pin 4]
- Pin\_5 [pin 5]
- Pin\_6 [pin 6]
- Pin\_7 [pin 7]
- Pin\_8 [pin 8]
- Pin\_9 [pin 9]

### Q1 — [AO3400A](https://flux.ai/adrian95/ao3400a~ug9.md)

- Datasheet URL: https://media\.digikey\.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A\_ds\.pdf
- Manufacturer Part Number: AO3400A
- Manufacturer Name: Alpha & Omega Semiconductor Inc\.
- Functional Group: Infrared
- Role Details: Logic\-level N\-MOSFET driven from ESP32 through gate resistor
- Role: IR LED Driver
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Transistor

**Pins:**
- D [pin 3]
- G [pin 1]
- S [pin 2]

### SW1 — [TS\-1088\-AR02016](https://flux.ai/lcsc/ts-1088-ar02016~e3n1.md)

- Manufacturer Name: XUNPU\(讯普\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302330\_XUNPU\-TS\-1088\-AR02016\_C720477\.pdf
- JLCPCB Part Class: Extended Part
- Role Details: BOOT and RESET momentary controls
- Role: Control Switch
- Manufacturer Part Number: TS\-1088\-AR02016
- Product Info Url: https://lcsc\.com/product\-detail/Tactile\-Switches\_XUNPU\-TS\-1088\-AR02016\_C720477\.html
- LCSC Part Number: C720477
- Part Type: Tactile Switches
- Package or Case Code: SW\-SMD\_L3\.9\-W3\.0\-P4\.45
- Functional Group: MCU Core

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### SW2 — [TS\-1088\-AR02016](https://flux.ai/lcsc/ts-1088-ar02016~e3n1.md)

- Role Details: BOOT and RESET momentary controls
- Manufacturer Name: XUNPU\(讯普\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302330\_XUNPU\-TS\-1088\-AR02016\_C720477\.pdf
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: TS\-1088\-AR02016
- Product Info Url: https://lcsc\.com/product\-detail/Tactile\-Switches\_XUNPU\-TS\-1088\-AR02016\_C720477\.html
- LCSC Part Number: C720477
- Part Type: Tactile Switches
- Package or Case Code: SW\-SMD\_L3\.9\-W3\.0\-P4\.45
- Functional Group: MCU Core
- Role: Control Switch

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### SW3 — [OS102011MS2QN1](https://flux.ai/adrian95/os102011ms2qn1~wd3.md)

- Manufacturer Name: C&K
- Symbol Style: parametric\-v1
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: OS102011MS2QN1
- Role: Switching
- Functional Group: MCU Core
- Datasheet URL: https://www\.ckswitches\.com/media/1428/os\.pdf
- Role Details: Latching NORMAL/DOWNLOAD selector for ESP32 GPIO0; momentary BOOT switch remains available
- Part Type: Switch

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]

### TP1 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- Role Details: Bring\-up test access to power and communication nets
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Functional Group: Expansion and Test
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Role: Test Point
- Part Type: Test Point

**Pins:**
- \~ [pin 1]

### TP10 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Test Point
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Functional Group: Expansion and Test
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Role Details: Bring\-up test access to power and communication nets
- Part Type: Test Point

**Pins:**
- \~ [pin 1]

### TP11 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Role Details: Bring\-up test access to power and communication nets
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Role: Test Point
- Functional Group: Expansion and Test
- Part Type: Test Point

**Pins:**
- \~ [pin 1]

### TP12 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- Role: Test Point
- Functional Group: Expansion and Test
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Role Details: Bring\-up test access to power and communication nets
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Part Type: Test Point

**Pins:**
- \~ [pin 1]

### TP2 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Role: Test Point
- Role Details: Bring\-up test access to power and communication nets
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Functional Group: Expansion and Test
- Part Type: Test Point

**Pins:**
- \~ [pin 1]

### TP3 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Role: Test Point
- Role Details: Bring\-up test access to power and communication nets
- Functional Group: Expansion and Test
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Part Type: Test Point

**Pins:**
- \~ [pin 1]

### TP4 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Functional Group: Expansion and Test
- Role: Test Point
- Part Type: Test Point
- Role Details: Bring\-up test access to power and communication nets

**Pins:**
- \~ [pin 1]

### TP5 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Functional Group: Expansion and Test
- Role: Test Point
- Role Details: Bring\-up test access to power and communication nets
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Part Type: Test Point

**Pins:**
- \~ [pin 1]

### TP6 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Role Details: Bring\-up test access to power and communication nets
- Part Type: Test Point
- Functional Group: Expansion and Test
- Role: Test Point

**Pins:**
- \~ [pin 1]

### TP7 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Role Details: Bring\-up test access to power and communication nets
- Functional Group: Expansion and Test
- Part Type: Test Point
- Role: Test Point

**Pins:**
- \~ [pin 1]

### TP8 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Role Details: Bring\-up test access to power and communication nets
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Role: Test Point
- Functional Group: Expansion and Test
- Part Type: Test Point

**Pins:**
- \~ [pin 1]

### TP9 — [S2761\-46R](https://flux.ai/silicon-yard/s2761-46r.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Expansion and Test
- Datasheet URL: https://www\.harwin\.com/api/download/datasheet/S2761\-46R
- Role: Test Point
- Manufacturer Name: Harwin Inc\.
- Manufacturer Part Number: S2761\-46R
- Part Type: Test Point
- Role Details: Bring\-up test access to power and communication nets

**Pins:**
- \~ [pin 1]

### U1 — [ESP32\-S3\-WROOM\-1\-N16R8](https://flux.ai/adrian95/esp32-s3-wroom-1-n16r8~fs1.md)

- Role Details: ESP32\-S3 native USB module; GPIO map avoids ordinary use of GPIO0/3/45/46
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/bcd526f54b8de686cec4db67219e36ea7ace50cddb0c92f3dfdac49cf99ffd2e\.pdf
- Functional Group: MCU Core
- Symbol Style: parametric\-v1
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: ESP32\-S3\-WROOM\-1\-N16R8
- Part Type: Module
- Role: Primary Compute
- Manufacturer Name: Espressif Systems

**Pins:**
- 3V3 [pin 2]
- EN [pin 3]
- GND\_1 [pin 1]
- GND\_10 [pin 48]
- GND\_11 [pin 49]
- GND\_2 [pin 40]
- GND\_3 [pin 41]
- GND\_4 [pin 42]
- GND\_5 [pin 43]
- GND\_6 [pin 44]
- GND\_7 [pin 45]
- GND\_8 [pin 46]
- GND\_9 [pin 47]
- IO0 [pin 27]
- IO1 [pin 39]
- IO10 [pin 18]
- IO11 [pin 19]
- IO12 [pin 20]
- IO13 [pin 21]
- IO14 [pin 22]
- IO15 [pin 8]
- IO16 [pin 9]
- IO17 [pin 10]
- IO18 [pin 11]
- IO19 [pin 13]
- IO2 [pin 38]
- IO20 [pin 14]
- IO21 [pin 23]
- IO3 [pin 15]
- IO35 [pin 28]
- IO36 [pin 29]
- IO37 [pin 30]
- IO38 [pin 31]
- IO39 [pin 32]
- IO4 [pin 4]
- IO40 [pin 33]
- IO41 [pin 34]
- IO42 [pin 35]
- IO45 [pin 26]
- IO46 [pin 16]
- IO47 [pin 24]
- IO48 [pin 25]
- IO5 [pin 5]
- IO6 [pin 6]
- IO7 [pin 7]
- IO8 [pin 12]
- IO9 [pin 17]
- RXD0 [pin 36]
- TXD0 [pin 37]

### U10 — [TPS22918DBVT](https://flux.ai/lcsc/tps22918dbvt~px0b.md)

- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- LCSC Part Number: C2680345
- Functional Group: Peripheral Power Gates
- Role: Peripheral Load Switch
- Symbol Style: parametric\-v1
- Manufacturer Name: TI\(德州仪器\)
- Role Details: Independent 3\.3 V rail gating with quick output discharge
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS22918DBVT
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps22918\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780425543228&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Ftps22918
- Part Type: Power Distribution Switches

**Pins:**
- CT [pin 4]
- GND [pin 2]
- ON [pin 3]
- QOD [pin 5]
- VIN [pin 1]
- VOUT [pin 6]

### U11 — [TPS22918DBVT](https://flux.ai/lcsc/tps22918dbvt~px0b.md)

- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- LCSC Part Number: C2680345
- Role: Peripheral Load Switch
- Symbol Style: parametric\-v1
- Role Details: Independent 3\.3 V rail gating with quick output discharge
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: Peripheral Power Gates
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS22918DBVT
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps22918\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780425543228&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Ftps22918
- Part Type: Power Distribution Switches

**Pins:**
- CT [pin 4]
- GND [pin 2]
- ON [pin 3]
- QOD [pin 5]
- VIN [pin 1]
- VOUT [pin 6]

### U12 — [TPS22918DBVT](https://flux.ai/lcsc/tps22918dbvt~px0b.md)

- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- LCSC Part Number: C2680345
- Symbol Style: parametric\-v1
- Role Details: Independent 3\.3 V rail gating with quick output discharge
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: Peripheral Power Gates
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS22918DBVT
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps22918\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780425543228&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Ftps22918
- Part Type: Power Distribution Switches
- Role: Peripheral Load Switch

**Pins:**
- CT [pin 4]
- GND [pin 2]
- ON [pin 3]
- QOD [pin 5]
- VIN [pin 1]
- VOUT [pin 6]

### U13 — [TPS22918DBVT](https://flux.ai/lcsc/tps22918dbvt~px0b.md)

- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- LCSC Part Number: C2680345
- Symbol Style: parametric\-v1
- Functional Group: Peripheral Power Gates
- Role Details: Independent 3\.3 V rail gating with quick output discharge
- Manufacturer Name: TI\(德州仪器\)
- Role: Peripheral Load Switch
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS22918DBVT
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps22918\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780425543228&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Ftps22918
- Part Type: Power Distribution Switches

**Pins:**
- CT [pin 4]
- GND [pin 2]
- ON [pin 3]
- QOD [pin 5]
- VIN [pin 1]
- VOUT [pin 6]

### U14 — [PCA9306DCUT](https://flux.ai/jecstronic/pca9306dcut~atk.md)

- Manufacturer Name: Texas Instruments
- Functional Group: Protected Wired Debug
- Manufacturer Part Number: PCA9306DCUT
- Part Type: Integrated Circuit
- Role Details: Bidirectional open\-drain translation between 3\.3 V MCU and VTGT
- Role: I2C Level Translator
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.ti\.com/general/docs/suppproductinfo\.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww\.ti\.com%2Flit%2Fgpn%2Fpca9306

**Pins:**
- EN [pin 8]
- GND [pin 4]
- SCL1 [pin 2]
- SCL2 [pin 6]
- SDA1 [pin 3]
- SDA2 [pin 5]
- VREF1 [pin 1]
- VREF2 [pin 7]

### U15 — [SN74LVC1T45DRLR](https://flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md)

- Manufacturer Part Number: SN74LVC1T45DRLR
- Role: Direction\-Controlled Level Translator
- JLCPCB Part Class: Extended Part
- Part Type: Translators / Level Shifters
- Manufacturer Name: TI\(德州仪器\)
- Package or Case Code: SOT\-5X3\-6\_W1\.6\-L1\.2\-P0\.50\-LS1\.6\-BL
- LCSC Part Number: C352970
- Functional Group: Protected Wired Debug
- Role Details: No auto\-direction on SPI; fixed or explicit DIR control per signal

**Pins:**
- A [pin 3]
- B [pin 4]
- DIR [pin 5]
- GND [pin 2]
- VCCA [pin 1]
- VCCB [pin 6]

### U16 — [SN74LVC1T45DRLR](https://flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md)

- Manufacturer Part Number: SN74LVC1T45DRLR
- JLCPCB Part Class: Extended Part
- Part Type: Translators / Level Shifters
- Role: Direction\-Controlled Level Translator
- Manufacturer Name: TI\(德州仪器\)
- Package or Case Code: SOT\-5X3\-6\_W1\.6\-L1\.2\-P0\.50\-LS1\.6\-BL
- LCSC Part Number: C352970
- Role Details: No auto\-direction on SPI; fixed or explicit DIR control per signal
- Functional Group: Protected Wired Debug

**Pins:**
- A [pin 3]
- B [pin 4]
- DIR [pin 5]
- GND [pin 2]
- VCCA [pin 1]
- VCCB [pin 6]

### U17 — [TXU0104DTRR](https://flux.ai/silicon-yard/txu0104dtrr.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/8ffa8fee2402fa2c0266c4f8b84477d5631a5f02c13454fd215a99bda574b42a\.pdf
- Functional Group: Protected Wired Debug
- Manufacturer Name: Texas Instruments
- Role Details: OE\-controlled target\-to\-MCU MISO translation over 1\.8V, 3\.3V, or 5V target domains
- Manufacturer Part Number: TXU0104DTRR
- Package or Case Code: DTR / X2QFN\-12
- Role: Logic\-level Shifting
- Symbol Style: parametric\-v1
- Part Type: Integrated Circuit

**Pins:**
- A1 [pin 2]
- A2 [pin 3]
- A3 [pin 4]
- A4 [pin 5]
- B1Y [pin 10]
- B2Y [pin 9]
- B3Y [pin 8]
- B4Y [pin 7]
- GND [pin 6]
- OE [pin 12]
- VCCA [pin 1]
- VCCB [pin 11]

### U18 — [SN74LVC1T45DRLR](https://flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md)

- Manufacturer Part Number: SN74LVC1T45DRLR
- JLCPCB Part Class: Extended Part
- Part Type: Translators / Level Shifters
- Manufacturer Name: TI\(德州仪器\)
- Role Details: No auto\-direction on SPI; fixed or explicit DIR control per signal
- Package or Case Code: SOT\-5X3\-6\_W1\.6\-L1\.2\-P0\.50\-LS1\.6\-BL
- LCSC Part Number: C352970
- Role: Direction\-Controlled Level Translator
- Functional Group: Protected Wired Debug

**Pins:**
- A [pin 3]
- B [pin 4]
- DIR [pin 5]
- GND [pin 2]
- VCCA [pin 1]
- VCCB [pin 6]

### U19 — [SN74LVC1T45DRLR](https://flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md)

- Manufacturer Part Number: SN74LVC1T45DRLR
- JLCPCB Part Class: Extended Part
- Functional Group: Protected Wired Debug
- Part Type: Translators / Level Shifters
- Manufacturer Name: TI\(德州仪器\)
- Role Details: No auto\-direction on SPI; fixed or explicit DIR control per signal
- Package or Case Code: SOT\-5X3\-6\_W1\.6\-L1\.2\-P0\.50\-LS1\.6\-BL
- LCSC Part Number: C352970
- Role: Direction\-Controlled Level Translator

**Pins:**
- A [pin 3]
- B [pin 4]
- DIR [pin 5]
- GND [pin 2]
- VCCA [pin 1]
- VCCB [pin 6]

### U2 — [BQ25895RTWT](https://flux.ai/lcsc/bq25895rtwt~paja.md)

- Functional Group: Power Input and Charging
- Datasheet URL: https://www\.ti\.com/general/docs/suppproductinfo\.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww\.ti\.com%2Flit%2Fgpn%2Fbq25895
- Part Type: Battery Management ICs
- Role: Battery Charger and Power Path
- Manufacturer Part Number: BQ25895RTWT
- Manufacturer Name: TI\(德州仪器\)
- Package or Case Code: WQFN\-24\_L4\.0\-W4\.0\-P0\.50\-TL\-EP2\.7
- Role Details: Sized around \~2\.9 A theoretical depleted\-cell combined peak; firmware interlocks required
- Symbol Style: parametric\-v1
- LCSC Part Number: C2861263
- JLCPCB Part Class: Extended Part

**Pins:**
- \~\{CE\} [pin 9]
- \~\{QON\} [pin 12]
- BAT [pin 13]
- BAT [pin 14]
- BTST [pin 21]
- D– [pin 3]
- D\+ [pin 2]
- DSEL [pin 24]
- EP [pin 25]
- ILIM [pin 10]
- INT [pin 7]
- OTG [pin 8]
- PGND [pin 17]
- PGND [pin 18]
- PMID [pin 23]
- REGN [pin 22]
- SCL [pin 5]
- SDA [pin 6]
- STAT [pin 4]
- SW [pin 20]
- SW [pin 19]
- SYS [pin 15]
- SYS [pin 16]
- TS [pin 11]
- VBUS [pin 1]

### U20 — [SN74LVC1T45DRLR](https://flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md)

- Manufacturer Part Number: SN74LVC1T45DRLR
- JLCPCB Part Class: Extended Part
- Part Type: Translators / Level Shifters
- Manufacturer Name: TI\(德州仪器\)
- Role: Target SPI CS Level Translator
- Package or Case Code: SOT\-5X3\-6\_W1\.6\-L1\.2\-P0\.50\-LS1\.6\-BL
- LCSC Part Number: C352970
- Functional Group: Protected Wired Debug
- Role Details: Fixed MCU/expander\-to\-target direction; translates independent target chip\-select to VTGT

**Pins:**
- A [pin 3]
- B [pin 4]
- DIR [pin 5]
- GND [pin 2]
- VCCA [pin 1]
- VCCB [pin 6]

### U21 — [TSOP38438](https://flux.ai/lcsc/tsop38438~sn8s.md)

- Manufacturer Part Number: TSOP38438
- JLCPCB Part Class: Extended Part
- Functional Group: Infrared
- Product Info Url: https://lcsc\.com/product\-detail/Infrared\-Receivers\_VISHAY\_TSOP38438\_TSOP38438\_C145271\.html
- Manufacturer Name: VISHAY\(威世\)
- Package or Case Code: SENSOR\-TG\_TSOP38236
- Role Details: Power\-gated IR receive channel
- Part Type: Infrared remote receiver
- LCSC Part Number: C145271
- Role: IR Receiver
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410121733\_Vishay\-Intertech\-TSOP38438\_C145271\.pdf

**Pins:**
- GND [pin 2]
- OUT [pin 1]
- VS [pin 3]

### U22 — [TUSB320LAIRWBR](https://flux.ai/lcsc/tusb320lairwbr~4mzy.md)

- Part Type: Battery Management ICs
- Manufacturer Name: TI\(德州仪器\)
- Manufacturer Part Number: TUSB320LAIRWBR
- Role: Sensing \(Shunt\)
- LCSC Part Number: C132554
- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/PMIC\-Battery\-Management\_TI\_TUSB320LAIRWBR\_TUSB320LAIRWBR\_C132554\.html
- Functional Group: USB\-C Input and Native USB
- Package or Case Code: X2QFN\-12\_L1\.6\-W1\.6\-P0\.40\-TL
- Role Details: Configured UFP/sink only; reports default/1\.5A/3A source current to firmware
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/3b78bec1ba7fbf4767897d4645a9894b0591efca458e28fc84ee299e5427e44c\.pdf

**Pins:**
- ADDR [pin 5]
- CC1 [pin 1]
- CC2 [pin 2]
- EN\_N [pin 11]
- GND [pin 10]
- ID [pin 9]
- INT\_N/OUT3 [pin 6]
- PORT [pin 3]
- SCL/OUT2 [pin 8]
- SDA/OUT1 [pin 7]
- VBUS\_DET [pin 4]
- VDD [pin 12]

### U23 — [TCA9535DBR](https://flux.ai/jecstronic/tca9535dbr~apa.md)

- Role Details: Low\-speed IRQ, reset, isolation\-enable, charger\-enable, buttons and card\-detect GPIO
- Manufacturer Name: Texas Instruments
- Role: I/O Expander
- Datasheet URL: https://www\.ti\.com/general/docs/suppproductinfo\.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww\.ti\.com%2Flit%2Fgpn%2Ftca9535
- Part Type: Integrated Circuit
- Functional Group: MCU Core
- Manufacturer Part Number: TCA9535DBR

**Pins:**
- \~INT [pin 1]
- A0 [pin 21]
- A1 [pin 2]
- A2 [pin 3]
- GND [pin 12]
- P00 [pin 4]
- P01 [pin 5]
- P02 [pin 6]
- P03 [pin 7]
- P04 [pin 8]
- P05 [pin 9]
- P06 [pin 10]
- P07 [pin 11]
- P10 [pin 13]
- P11 [pin 14]
- P12 [pin 15]
- P13 [pin 16]
- P14 [pin 17]
- P15 [pin 18]
- P16 [pin 19]
- P17 [pin 20]
- SCL [pin 22]
- SDA [pin 23]
- VCC [pin 24]

### U24 — [SN74CB3T3245DBQR](https://flux.ai/lcsc/sn74cb3t3245dbqr~441c.md)

- LCSC Part Number: C2674566
- Role Details: NFC bus isolation when 3V3\_NFC\_SW is off
- Manufacturer Part Number: SN74CB3T3245DBQR
- Part Type: Signal Switches / Encoders & Decoders / Multiplexers
- Manufacturer Name: TI\(德州仪器\)
- JLCPCB Part Class: Extended Part
- Role: Power\-Off Signal Isolation
- Functional Group: NFC Module
- Package or Case Code: SSOP\-20\_L8\.7\-W3\.9\-P0\.64\-LS6\.0\-BL

**Pins:**
- \~\{OE\} [pin 19]
- A1 [pin 2]
- A2 [pin 3]
- A3 [pin 4]
- A4 [pin 5]
- A5 [pin 6]
- A6 [pin 7]
- A7 [pin 8]
- A8 [pin 9]
- B1 [pin 18]
- B2 [pin 17]
- B3 [pin 16]
- B4 [pin 15]
- B5 [pin 14]
- B6 [pin 13]
- B7 [pin 12]
- B8 [pin 11]
- GND [pin 10]
- NC [pin 1]
- VCC [pin 20]

### U25 — [SN74CB3T3245DBQR](https://flux.ai/lcsc/sn74cb3t3245dbqr~441c.md)

- Role: Power\-Off Signal Isolation
- Functional Group: Sub\-GHz Module
- LCSC Part Number: C2674566
- Manufacturer Part Number: SN74CB3T3245DBQR
- Part Type: Signal Switches / Encoders & Decoders / Multiplexers
- Manufacturer Name: TI\(德州仪器\)
- Role Details: Sub\-GHz bus isolation when 3V3\_SUBGHZ\_SW is off
- JLCPCB Part Class: Extended Part
- Package or Case Code: SSOP\-20\_L8\.7\-W3\.9\-P0\.64\-LS6\.0\-BL

**Pins:**
- \~\{OE\} [pin 19]
- A1 [pin 2]
- A2 [pin 3]
- A3 [pin 4]
- A4 [pin 5]
- A5 [pin 6]
- A6 [pin 7]
- A7 [pin 8]
- A8 [pin 9]
- B1 [pin 18]
- B2 [pin 17]
- B3 [pin 16]
- B4 [pin 15]
- B5 [pin 14]
- B6 [pin 13]
- B7 [pin 12]
- B8 [pin 11]
- GND [pin 10]
- NC [pin 1]
- VCC [pin 20]

### U26 — [SN74CB3T3245DBQR](https://flux.ai/lcsc/sn74cb3t3245dbqr~441c.md)

- Role Details: Display bus isolation when 3V3\_DISPLAY\_SW is off
- LCSC Part Number: C2674566
- Manufacturer Part Number: SN74CB3T3245DBQR
- Role: Power\-Off Signal Isolation
- Part Type: Signal Switches / Encoders & Decoders / Multiplexers
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: Display and Controls
- JLCPCB Part Class: Extended Part
- Package or Case Code: SSOP\-20\_L8\.7\-W3\.9\-P0\.64\-LS6\.0\-BL

**Pins:**
- \~\{OE\} [pin 19]
- A1 [pin 2]
- A2 [pin 3]
- A3 [pin 4]
- A4 [pin 5]
- A5 [pin 6]
- A6 [pin 7]
- A7 [pin 8]
- A8 [pin 9]
- B1 [pin 18]
- B2 [pin 17]
- B3 [pin 16]
- B4 [pin 15]
- B5 [pin 14]
- B6 [pin 13]
- B7 [pin 12]
- B8 [pin 11]
- GND [pin 10]
- NC [pin 1]
- VCC [pin 20]

### U27 — [SN74CB3T3245DBQR](https://flux.ai/lcsc/sn74cb3t3245dbqr~441c.md)

- LCSC Part Number: C2674566
- Manufacturer Part Number: SN74CB3T3245DBQR
- Part Type: Signal Switches / Encoders & Decoders / Multiplexers
- Functional Group: microSD
- Manufacturer Name: TI\(德州仪器\)
- JLCPCB Part Class: Extended Part
- Role: Power\-Off Signal Isolation
- Role Details: microSD SPI isolation when 3V3\_SD\_SW is off
- Package or Case Code: SSOP\-20\_L8\.7\-W3\.9\-P0\.64\-LS6\.0\-BL

**Pins:**
- \~\{OE\} [pin 19]
- A1 [pin 2]
- A2 [pin 3]
- A3 [pin 4]
- A4 [pin 5]
- A5 [pin 6]
- A6 [pin 7]
- A7 [pin 8]
- A8 [pin 9]
- B1 [pin 18]
- B2 [pin 17]
- B3 [pin 16]
- B4 [pin 15]
- B5 [pin 14]
- B6 [pin 13]
- B7 [pin 12]
- B8 [pin 11]
- GND [pin 10]
- NC [pin 1]
- VCC [pin 20]

### U28 — [TPS2121RUXR](https://flux.ai/lcsc/tps2121ruxr~qidv.md)

- Manufacturer Part Number: TPS2121RUXR
- Product Info Url: https://lcsc\.com/product\-detail/New\-Arrivals\_Texas\-Instruments\-Texas\-Instruments\-TPS2121RUXR\_C485916\.html
- Package or Case Code: VQFN\-HR\-12\_L2\.5\-W2\.0\-P0\.50\-BL
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2001181534\_Texas\-Instruments\-TPS2121RUXR\_C485916\.pdf
- Functional Group: POWER U28 Dual Battery Mux
- Role Details: Reverse\-current\-blocking hot\-swap mux for two protected 1S packs; 4 A programmed limit
- JLCPCB Part Class: Extended Part
- Role: Dual Battery Power Mux
- Part Type: Battery Management ICs
- LCSC Part Number: C485916
- Manufacturer Name: TI\(德州仪器\)

**Pins:**
- CP2 [pin 3]
- GND [pin 12]
- ILM [pin 10]
- IN1 [pin 7]
- IN2 [pin 2]
- OUT [pin 1]
- OUT [pin 8]
- OV1 [pin 5]
- OV2 [pin 4]
- PR1 [pin 6]
- SS [pin 11]
- ST [pin 9]

### U29 — [MCP73831T\-2ACI/OT](https://flux.ai/acolborn/mcp73831t-2aciot~h8.md)

- Manufacturer Part Number: MCP73831T\-2ACI/OT
- Functional Group: POWER U28 Dual Battery Mux
- Datasheet URL: https://ww1\.microchip\.com/downloads/en/DeviceDoc/MCP73831\-Family\-Data\-Sheet\-DS20001984H\.pdf
- Role: Independent Battery Charger
- Manufacturer Name: Microchip Technology
- Role Details: Pack A standalone 4\.2 V charge channel programmed to 250 mA
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Integrated Circuit

**Pins:**
- PROG [pin 5]
- STAT [pin 1]
- VBAT [pin 3]
- VIN [pin 4]
- VSS [pin 2]

### U3 — [TPS630702RNMR](https://flux.ai/lcsc/tps630702rnmr~ooxg.md)

- JLCPCB Part Class: Extended Part
- LCSC Part Number: C2071354
- Package or Case Code: VQFN\-15\_L3\.0\-W2\.5\-P0\.50\-BL
- Part Type: DC\-DC Converters
- Manufacturer Part Number: TPS630702RNMR
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: 3V3 Power
- Role Details: 3\.3 V rail; 1\.58 A peak allowance, \>=2 A continuous target
- Role: Buck\-Boost Regulator

**Pins:**
- EN [pin 14]
- FB [pin 5]
- FB2 [pin 6]
- GND [pin 4]
- L1 [pin 11]
- L2 [pin 9]
- PG [pin 2]
- PGND [pin 10]
- PS/SYNC [pin 1]
- VAUX [pin 3]
- VIN [pin 12]
- VOUT [pin 7]
- VSEL [pin 15]

### U30 — [MCP73831T\-2ACI/OT](https://flux.ai/acolborn/mcp73831t-2aciot~h8.md)

- Manufacturer Part Number: MCP73831T\-2ACI/OT
- Datasheet URL: https://ww1\.microchip\.com/downloads/en/DeviceDoc/MCP73831\-Family\-Data\-Sheet\-DS20001984H\.pdf
- Manufacturer Name: Microchip Technology
- Role Details: Pack B standalone 4\.2 V charge channel programmed to 250 mA
- Role: Independent Battery Charger
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Integrated Circuit
- Functional Group: POWER U28 Dual Battery Mux

**Pins:**
- PROG [pin 5]
- STAT [pin 1]
- VBAT [pin 3]
- VIN [pin 4]
- VSS [pin 2]

### U31 — [ADS1115IDGSR](https://flux.ai/adrian95/ads1115idgsr~3y9.md)

- Role: Battery Voltage Monitor
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Texas Instruments
- Manufacturer Part Number: ADS1115IDGSR
- Part Type: Integrated Circuit
- Datasheet URL: https://www\.ti\.com/general/docs/suppproductinfo\.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww\.ti\.com%2Flit%2Fgpn%2Fads1113
- Functional Group: POWER U28 Dual Battery Mux
- Role Details: I2C ADC monitors both protected pack voltages and muxed battery bus

**Pins:**
- ADDR [pin 1]
- AIN0 [pin 4]
- AIN1 [pin 5]
- AIN2 [pin 6]
- AIN3 [pin 7]
- ALERT/RDY [pin 2]
- GND [pin 3]
- SCL [pin 10]
- SDA [pin 9]
- VDD [pin 8]

### U32 — [TCA9535DBR](https://flux.ai/jecstronic/tca9535dbr~apa.md)

- Manufacturer Name: Texas Instruments
- Role Details: Migrates low\-speed power enables and adds battery, audio, and storage control/status
- Datasheet URL: https://www\.ti\.com/general/docs/suppproductinfo\.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww\.ti\.com%2Flit%2Fgpn%2Ftca9535
- Functional Group: MCU U32 Subsystem Control
- Part Type: Integrated Circuit
- Manufacturer Part Number: TCA9535DBR
- Role: Subsystem Control Expander

**Pins:**
- \~INT [pin 1]
- A0 [pin 21]
- A1 [pin 2]
- A2 [pin 3]
- GND [pin 12]
- P00 [pin 4]
- P01 [pin 5]
- P02 [pin 6]
- P03 [pin 7]
- P04 [pin 8]
- P05 [pin 9]
- P06 [pin 10]
- P07 [pin 11]
- P10 [pin 13]
- P11 [pin 14]
- P12 [pin 15]
- P13 [pin 16]
- P14 [pin 17]
- P15 [pin 18]
- P16 [pin 19]
- P17 [pin 20]
- SCL [pin 22]
- SDA [pin 23]
- VCC [pin 24]

### U33 — [TPS22918DBVT](https://flux.ai/lcsc/tps22918dbvt~px0b.md)

- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- LCSC Part Number: C2680345
- Role Details: Power\-gates the digital microphone rail
- Symbol Style: parametric\-v1
- Manufacturer Name: TI\(德州仪器\)
- Role: Load Switch
- Functional Group: AUDIO U33 I2S Microphone
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS22918DBVT
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps22918\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780425543228&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Ftps22918
- Part Type: Power Distribution Switches

**Pins:**
- CT [pin 4]
- GND [pin 2]
- ON [pin 3]
- QOD [pin 5]
- VIN [pin 1]
- VOUT [pin 6]

### U34 — [TPS22918DBVT](https://flux.ai/lcsc/tps22918dbvt~px0b.md)

- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- Role: Load Switch
- LCSC Part Number: C2680345
- Symbol Style: parametric\-v1
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: AUDIO U34 Speaker Amplifier
- Role Details: Power\-gates the 5 V class\-D amplifier rail
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS22918DBVT
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps22918\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780425543228&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Ftps22918
- Part Type: Power Distribution Switches

**Pins:**
- CT [pin 4]
- GND [pin 2]
- ON [pin 3]
- QOD [pin 5]
- VIN [pin 1]
- VOUT [pin 6]

### U35 — [TPS22918DBVT](https://flux.ai/lcsc/tps22918dbvt~px0b.md)

- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- LCSC Part Number: C2680345
- Symbol Style: parametric\-v1
- Functional Group: STORAGE U35 Removable Bay
- Role: Load Switch
- Manufacturer Name: TI\(德州仪器\)
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS22918DBVT
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps22918\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780425543228&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Ftps22918
- Role Details: Power\-gates removable storage bay 3\.3 V
- Part Type: Power Distribution Switches

**Pins:**
- CT [pin 4]
- GND [pin 2]
- ON [pin 3]
- QOD [pin 5]
- VIN [pin 1]
- VOUT [pin 6]

### U36 — [SN74CB3T3245DBQR](https://flux.ai/lcsc/sn74cb3t3245dbqr~441c.md)

- Functional Group: STORAGE U35 Removable Bay
- LCSC Part Number: C2674566
- Manufacturer Part Number: SN74CB3T3245DBQR
- Part Type: Signal Switches / Encoders & Decoders / Multiplexers
- Manufacturer Name: TI\(德州仪器\)
- JLCPCB Part Class: Extended Part
- Role Details: Default\-disabled isolation for removable storage SPI signals
- Role: Power\-Off Signal Isolation
- Package or Case Code: SSOP\-20\_L8\.7\-W3\.9\-P0\.64\-LS6\.0\-BL

**Pins:**
- \~\{OE\} [pin 19]
- A1 [pin 2]
- A2 [pin 3]
- A3 [pin 4]
- A4 [pin 5]
- A5 [pin 6]
- A6 [pin 7]
- A7 [pin 8]
- A8 [pin 9]
- B1 [pin 18]
- B2 [pin 17]
- B3 [pin 16]
- B4 [pin 15]
- B5 [pin 14]
- B6 [pin 13]
- B7 [pin 12]
- B8 [pin 11]
- GND [pin 10]
- NC [pin 1]
- VCC [pin 20]

### U37 — [MSM261S4030H0R](https://flux.ai/adrian95/msm261s4030h0r~2iz.md)

- Functional Group: AUDIO U33 I2S Microphone
- Symbol Style: parametric\-v1
- Role: Digital Microphone
- Manufacturer Part Number: MSM261S4030H0R
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Microphone
- JLCPCB Part Number: C2840615
- Datasheet URL: https://files\.waveshare\.com/upload/0/01/MSM261S4030H0R\.pdf
- Manufacturer Name: MEMS
- Role Details: Power\-gated I2S microphone; left channel selected

**Pins:**
- CHIPEN [pin 4]
- GND [pin 1]
- L/R [pin 5]
- N/C [pin 2]
- SCK [pin 6]
- SD [pin 7]
- VDD [pin 8]
- WS [pin 3]

### U38 — [MAX98357AETE\+T](https://flux.ai/markwuflux/max98357aeteplust~ht.md)

- DPN: C910544
- Manufacturer Part Number: MAX98357AETE\+T
- Role: I2S Class\-D Amplifier
- Functional Group: AUDIO U34 Speaker Amplifier
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/2201242100\_Analog\-Devices\-Inc\-\-Maxim\-Integrated\-MAX98357AETE\-T\_C910544\.pdf
- Manufacturer Name: Maxim Integrated Products, Inc\.
- Role Details: Power\-gated mono speaker driver; use an 8 ohm speaker and firmware volume limiting to preserve battery\-path current margin

**Pins:**
- \~SD\_MODE [pin 4]
- BCLK [pin 16]
- DIN [pin 1]
- GAIN\_SLOT [pin 2]
- GND\_1 [pin 3]
- GND\_2 [pin 11]
- GND\_3 [pin 15]
- LRCLK [pin 14]
- N\.C\.\_1 [pin 5]
- N\.C\.\_2 [pin 6]
- N\.C\.\_3 [pin 12]
- N\.C\.\_4 [pin 13]
- OUTN [pin 10]
- OUTP [pin 9]
- THERMAL\_PAD [pin 17]
- VDD\_1 [pin 7]
- VDD\_2 [pin 8]

### U4 — [TPS61022RWUR](https://flux.ai/lcsc/tps61022rwur~w0w8.md)

- Role: Power Conversion
- Package or Case Code: VQFN\-7\_L2\.0\-W2\.0\-P0\.55\-TL\_RWU
- Part Type: DC\-DC Converters
- Functional Group: 5V Target Power
- Manufacturer Part Number: TPS61022RWUR
- LCSC Part Number: C915088
- Role Details: 5 V / 500 mA target rail at 3\.0 V battery; default disabled
- Manufacturer Name: TI\(德州仪器\)
- JLCPCB Part Class: Extended Part

**Pins:**
- EN [pin 5]
- FB [pin 4]
- GND [pin 1]
- MODE [pin 6]
- SW [pin 2]
- VIN [pin 7]
- VOUT [pin 3]

### U5 — [TPS2553DBVR\-1](https://flux.ai/lcsc/tps2553dbvr-1~yr7u.md)

- Manufacturer Name: TI\(德州仪器\)
- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BL
- LCSC Part Number: C111738
- Manufacturer Part Number: TPS2553DBVR\-1
- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/PMIC\-Power\-Distribution\-Switches\_TI\_TPS2553DBVR\-1\_TPS2553DBVR\-1\_C111738\.html
- Functional Group: 5V Target Power
- Role: Current\-Limited Load Switch
- Part Type: Power Distribution Switches
- Role Details: Protected 5 V target/expansion output set near 500 mA
- Datasheet URL: https://lcsc\.com/product\-detail/PMIC\-Power\-Distribution\-Switches\_TI\_TPS2553DBVR\-1\_TPS2553DBVR\-1\_C111738\.html

**Pins:**
- \~\{FAULT\} [pin 4]
- EN [pin 3]
- GND [pin 2]
- ILIM [pin 5]
- IN [pin 1]
- OUT [pin 6]

### U6 — [MAX17048G\+T10](https://flux.ai/lcsc/max17048gplust10~jvyd.md)

- Manufacturer Name: MAXIM
- Manufacturer Part Number: MAX17048G\+T10
- LCSC Part Number: C2682616
- Package or Case Code: DFN\-8\_L2\.0\-W2\.0\-P0\.50\-BL\-EP
- Role Details: ModelGauge battery state monitoring without series shunt
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/MAX17048\-MAX17049\.pdf
- Functional Group: Battery Monitoring
- Role: Fuel Gauge
- Part Type: Battery Management ICs
- Symbol Style: parametric\-v1
- JLCPCB Part Class: Extended Part

**Pins:**
- \~\{ALRT\} [pin 5]
- CELL [pin 2]
- CTG [pin 1]
- EP [pin 9]
- GND [pin 4]
- QSTRT [pin 6]
- SCL [pin 7]
- SDA [pin 8]
- VDD [pin 3]

### U7 — [INA219BIDR](https://flux.ai/lcsc/ina219bidr~jxtw.md)

- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/ina219\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780319426350&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Fina219
- Package or Case Code: SOIC\-8\_L5\.0\-W4\.0\-P1\.27\-LS6\.1\-BL
- LCSC Part Number: C2155799
- Role Details: Measures 3\.3 V system rail through external low\-ohmic shunt
- Symbol Style: parametric\-v1
- Manufacturer Part Number: INA219BIDR
- JLCPCB Part Class: Extended Part
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Power Management
- Functional Group: 3V3 Power
- Role: Rail Monitor
- Manufacturer Name: TI\(德州仪器\)

**Pins:**
- A0 [pin 2]
- A1 [pin 1]
- GND [pin 6]
- IN– [pin 7]
- IN\+ [pin 8]
- SCL [pin 4]
- SDA [pin 3]
- VS [pin 5]

### U8 — [TMP117AIDRVR](https://flux.ai/lcsc/tmp117aidrvr~2nvt.md)

- Datasheet URL: https://www\.lcsc\.com/datasheet/C699536\.pdf?spm=wm\.sxq\.inf\.ggs&lcsc\_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1JcV11VTlBZXjsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D
- LCSC Part Number: C699536
- Operating Temperature: \-55°C \~ 150°C \(TA\)
- Sensor Type: Digital, Local
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: TMP117AIDRVR
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Temperature Monitor
- Manufacturer Name: TI\(德州仪器\)
- Role Details: Place thermally near ESP32 module for performance\-profile monitoring
- Package or Case Code: WSON\-6\_L2\.0\-W2\.0\-P0\.65\-TL\-EP
- Voltage Supply: 1\.8V \~ 5\.5V
- Functional Group: MCU Core
- Part Type: Temperature Sensors
- Symbol Style: parametric\-v1

**Pins:**
- ADD0 [pin 4]
- ALERT [pin 3]
- EP [pin 7]
- GND [pin 2]
- SCL [pin 1]
- SDA [pin 6]
- V\+ [pin 5]

### U9 — [TPS22918DBVT](https://flux.ai/lcsc/tps22918dbvt~px0b.md)

- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- LCSC Part Number: C2680345
- Functional Group: Peripheral Power Gates
- Role: Peripheral Load Switch
- Symbol Style: parametric\-v1
- Manufacturer Name: TI\(德州仪器\)
- Role Details: Independent 3\.3 V rail gating with quick output discharge
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS22918DBVT
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps22918\.pdf?HQS=dis\-dk\-null\-digikeymode\-dsf\-pf\-null\-wwe&ts=1780425543228&ref\_url=https%253A%252F%252Fwww\.ti\.com%252Fgeneral%252Fdocs%252Fsuppproductinfo\.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww\.ti\.com%252Flit%252Fgpn%252Ftps22918
- Part Type: Power Distribution Switches

**Pins:**
- CT [pin 4]
- GND [pin 2]
- ON [pin 3]
- QOD [pin 5]
- VIN [pin 1]
- VOUT [pin 6]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/macswim/healerplus\-rugged\-modular\-security\-toolkit\-e4b4\-ec58\~9e](https://flux.ai/macswim/healerplus-rugged-modular-security-toolkit-e4b4-ec58~9e).*

---

*Generated from [https://flux\.ai/macswim/healerplus\-rugged\-modular\-security\-toolkit\-e4b4\-ec58\~9e](https://flux.ai/macswim/healerplus-rugged-modular-security-toolkit-e4b4-ec58~9e)*