# wireless stethosope ## Description Wireless Stethoscope Hardware Design: ERC/DRC Compliance, Signal Integrity, and Verified Footprints ## Project Details - **Owner:** coderbot - **Created:** 10/19/2025 - **Last Updated:** 10/28/2025 - **Visibility:** Public - **J5_Y:** 596 mm - **System Architecture:** flowchart LR USB_C["USB-C Power Input"] --> Protection["Protection & Power Path Management"] Protection --> Buck3V3["3.3V Buck Regulator"] Protection --> BuckAnalog["Analog Supply Regulator"] Buck3V3 --> MCU["Dual-Radio MCU (Wi-Fi & BLE)"] MCU --> ECG_AFE["7-Lead ECG AFE with RLD"] ECG_AFE --> ECG_Electrodes["ECG Electrodes"] MCU --> SpO2_AFE["SpO₂ Sensor AFE"] SpO2_AFE --> PPG["PPG Sensor"] MCU --> Mic_AFE["Low-Noise Mic AFE"] Mic_AFE --> MEMS_Mic["MEMS Microphone"] MCU --> I2C_SPI["I2C/SPI & Programming Interface"] - **ExtremeX_Min:** -35.2mm - **ExtremeY_Max:** 596 mm - **System Architecture:** flowchart LR USB-C --> Protection Protection --> Buck Buck --> MCU & Sensor MCU & Sensor --> I²C & Programming - **U1_X:** -25.2134 mm - **BoardOutlineDiameter_mm:** 400mm - **ExtremeX_Max:** 7.5mm - **J3_X:** 0 mm - **BoardHeight:** 10000.575mm - **J3_Y:** -1.5 mm - **BoardWidth:** 52.7mm - **J1_X:** 7.5 mm - **J5_X:** -35.2 mm - **J1_Y:** 0 mm - **ExtremeY_Min:** -11.5726 mm - **U1_Y:** -11.5726mm - **Stars:** 1 ## Key Components ### D1 — [SK36A-LTP](https://www.flux.ai/adrian95/sk36a-ltp~yxg.md) - Manufacturer Name: Micro Commercial Co - Role Details: Reverse-polarity Schottky diode for 5 V input - Datasheet URL: https://www.mccsemi.com/pdf/Products/SK32A-L-SK310A-L(DO-214AC).pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Manufacturer Part Number: SK36A-LTP - Role: Protection **Pins:** - A [pin 2] - K [pin 1] ### IC1 — [TPS25751SRSMR](https://www.flux.ai/3xalted0n3/tps25751srsmr~zv.md) - Package or Case Code: QFN40P400X400X100-33N-D - Role Details: USB-C power path management and protection - Role: Power Management - Manufacturer Part Number: TPS25751SRSMR - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps25751.pdf - Manufacturer Name: Texas Instruments **Pins:** - ~{I2CC_IRQ} [pin 17] - ~{I2CT_IRQ} [pin 10] - ADCIN1 [pin 2] - ADCIN2 [pin 3] - CC1 [pin 24] - CC2 [pin 25] - GATE_VBUS [pin 21] - GATE_VSYS [pin 20] - GND_1 [pin 11] - GND_2 [pin 12] - GND_3 [pin 14] - GND_4 [pin 33] - GPIO0 [pin 5] - GPIO1 [pin 6] - GPIO11 [pin 13] - GPIO2 [pin 7] - GPIO3 [pin 18] - GPIO4/USB_P/LD1 [pin 22] - GPIO5/USB_N/LD2 [pin 23] - GPIO6 [pin 31] - GPIO7 [pin 30] - I2CC_SCL [pin 16] - I2CC_SDA [pin 15] - I2CT_SCL [pin 9] - I2CT_SDA [pin 8] - LDO_1V5 [pin 4] - LDO_3V3 [pin 1] - PP5V_1 [pin 28] - PP5V_2 [pin 29] - VBUS_1 [pin 26] - VBUS_2 [pin 27] - VIN_3V3 [pin 32] - VSYS [pin 19] ### J1 — [0022232071](https://www.flux.ai/adrian95/0022232071~t1j.md) - Datasheet URL: https://tools.molex.com/pdm_docs/sd/022232071_sd.pdf - Part Type: Connector - Manufacturer Part Number: 0022232071 - Role Details: ECG electrode header, 7-pin - Role: Connector - Manufacturer Name: Molex - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] ### J2 — [JST B2B PH K 01x02 Connector](https://www.flux.ai/jharwinbarrozo/jst-b2b-ph-k-01x02-connector~zu5.md) - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) - Role: Connector - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - Role Details: SpO₂ sensor connector, 2-pin - Manufacturer Name: JST Sales America **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J3 — [2024100002](https://www.flux.ai/adrian95/2024100002~atk.md) - Role: Connector - Manufacturer Name: Molex - Part Type: Connector - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/834/202410002_Pkg_Spec.pdf - Manufacturer Part Number: 2024100002 - Role Details: USB-C receptacle for 5 V power input with CC pins - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DA- [pin A7] - DA+ [pin A6] - DB- [pin B7] - DB+ [pin B6] - GND1 [pin A1] - GND2 [pin A12] - GND3 [pin B1] - GND4 [pin B12] - RX1- [pin B10] - RX1+ [pin B11] - RX2- [pin A10] - RX2+ [pin A11] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD1 [pin SH1] - SHIELD2 [pin SH2] - SHIELD3 [pin SH3] - SHIELD4 [pin SH4] - TX1- [pin A3] - TX1+ [pin A2] - TX2- [pin B3] - TX2+ [pin B2] - VBUS1 [pin A4] - VBUS2 [pin A9] - VBUS3 [pin B4] - VBUS4 [pin B9] ### J4 — [2024100002](https://www.flux.ai/adrian95/2024100002~atk.md) - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/834/202410002_Pkg_Spec.pdf - Part Type: Connector - Manufacturer Part Number: 2024100002 - License: https://creativecommons.org/licenses/by/4.0/ - Role: Connector - Role Details: USB-C power input - Manufacturer Name: Molex **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DA- [pin A7] - DA+ [pin A6] - DB- [pin B7] - DB+ [pin B6] - GND1 [pin A1] - GND2 [pin A12] - GND3 [pin B1] - GND4 [pin B12] - RX1- [pin B10] - RX1+ [pin B11] - RX2- [pin A10] - RX2+ [pin A11] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD1 [pin SH1] - SHIELD2 [pin SH2] - SHIELD3 [pin SH3] - SHIELD4 [pin SH4] - TX1- [pin A3] - TX1+ [pin A2] - TX2- [pin B3] - TX2+ [pin B2] - VBUS1 [pin A4] - VBUS2 [pin A9] - VBUS3 [pin B4] - VBUS4 [pin B9] ### J5 — [SJ2-3593D-SMT-TR](https://www.flux.ai/moshtey/sj2-3593d-smt-tr~yy.md) - Role Details: Stethoscope transducer connector - Role: Connector - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: SJ2-3593D-SMT-TR **Pins:** - RING [pin 3] - RING_SWITCH [pin 11] - SLEEVE [pin 1] - TIP [pin 2] - TIP_SWITCH [pin 10] ### LCD1 — [N114-2413THBIG01-H13](https://www.flux.ai/lcsc/n114-2413thbig01-h13~w94z.md) - Part Type: LCD Displays Modules - Package or Case Code: LCD-SMD_1.14IPS-LCD - Role Details: 1.14" IPS SPI LCD Module, 240x135 resolution, 3.3V operation - Manufacturer Name: Newvision(新智景) - JLCPCB Part Class: Extended Part - LCSC Part Number: C2890618 - Role: Display Device - Manufacturer Part Number: N114-2413THBIG01-H13 **Pins:** - CS [pin 7] - GND [pin 8] - GND [pin 13] - LEDA [pin 12] - LEDK [pin 11] - NC [pin 1] - NC [pin 2] - NC [pin 9] - RES [pin 6] - RS [pin 5] - SCL [pin 4] - SDA [pin 3] - VCC [pin 10] ### TVS1 — [TPD4EUSB30](https://www.flux.ai/kicad-part-library/tpd4eusb30~3y9.md) - Manufacturer Name: Texas Instruments Inc. - Role: Protection - Package or Case Code: USON-10_2.5x1.0mm_P0.5mm - Datasheet URL: http://www.ti.com/lit/ds/symlink/tpd2eusb30a.pdf - Manufacturer Part Number: TPD4EUSB30 - Role Details: TVS diode array for USB ESD protection **Pins:** - D1- [pin 2] - D1+ [pin 1] - D2- [pin 5] - D2+ [pin 4] - GND [pin 3] - GND [pin 8] - NC [pin 9] - NC [pin 6] - NC [pin 10] - NC [pin 7] ### U1 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Operating Voltage: 3.3V - Role: Main MCU - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Wi-Fi 802.11b/g/n and BLE 5.x MCU module - Manufacturer Name: Espressif Systems - Part Type: Microcontroller - Manufacturer Part Number: ESP32-WROOM-32D **Pins:** - 3.3V [pin 2] - AGND [pin 39] - CLK [pin 20] - CMD [pin 19] - EN [pin 3] - GND [pin 38] - GND [pin 15] - GND [pin 1] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - IO4 [pin 26] - IO5 [pin 29] - NC [pin 32] - RXD0 [pin 34] - SD0 [pin 21] - SD1 [pin 22] - SD2 [pin 17] - SD3 [pin 18] - TXD0 [pin 35] - VN [pin 5] - VP [pin 4] ### U1 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Role Details: Wi-Fi 802.11b/g/n and BLE 5.x MCU module - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - Role: Main MCU - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Espressif Systems - Manufacturer Part Number: ESP32-WROOM-32D - Part Type: Microcontroller **Pins:** - 3.3V [pin 2] - AGND [pin 39] - CLK [pin 20] - CMD [pin 19] - EN [pin 3] - GND [pin 38] - GND [pin 15] - GND [pin 1] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - IO4 [pin 26] - IO5 [pin 29] - NC [pin 32] - RXD0 [pin 34] - SD0 [pin 21] - SD1 [pin 22] - SD2 [pin 17] - SD3 [pin 18] - TXD0 [pin 35] - VN [pin 5] - VP [pin 4] ### U10 — [TLV62568DDC](https://www.flux.ai/kicad-part-library/tlv62568ddc~vt.md) - Operating Voltage: 5V - Manufacturer Part Number: TLV62568DDC - Datasheet URL: http://www.ti.com/lit/ds/symlink/tlv62568.pdf - Manufacturer Name: Texas Instruments Inc. - Role: Power Conversion - Package or Case Code: SOT-23-6 - Role Details: Buck regulator for 3.3 V digital and analog rails **Pins:** - EN [pin 1] - FB [pin 6] - GND [pin 2] - PG [pin 5] - SW [pin 3] - VIN [pin 4] ### U2 — [ADS1298IPAGR](https://www.flux.ai/vasy_skral/ads1298ipagr~p95.md) - Role Details: 7-lead ECG front-end AFE with integrated right-leg drive - Role: ECG Front-End - Part Type: Integrated Circuit - Manufacturer Part Number: ADS1298IPAGR - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fads1294 - Operating Voltage: 3.3V - Manufacturer Name: Texas Instruments **Pins:** - ~CS [pin 39] - ~DRDY [pin 47] - ~PWDN [pin 35] - ~RESET [pin 36] - AVDD [pin 59] - AVDD [pin 21] - AVDD [pin 22] - AVDD [pin 19] - AVDD [pin 56] - AVDD1 [pin 54] - AVSS [pin 23] - AVSS [pin 57] - AVSS [pin 20] - AVSS [pin 58] - AVSS [pin 32] - AVSS1 [pin 53] - CLK [pin 37] - CLKSEL [pin 52] - DAISY_IN [pin 41] - DGND [pin 51] - DGND [pin 33] - DGND [pin 49] - DIN [pin 34] - DOUT [pin 43] - DVDD [pin 50] - DVDD [pin 48] - GPIO1 [pin 42] - GPIO2 [pin 44] - GPIO3 [pin 45] - GPIO4 [pin 46] - IN1N [pin 15] - IN1P [pin 16] - IN2N [pin 13] - IN2P [pin 14] - IN3N [pin 11] - IN3P [pin 12] - IN4N [pin 9] - IN4P [pin 10] - IN5N [pin 7] - IN5P [pin 8] - IN6N [pin 5] - IN6P [pin 6] - IN7N [pin 4] - IN7P [pin 3] - IN8N [pin 1] - IN8P [pin 2] - NC [pin 27] - NC [pin 29] - RESV1 [pin 31] - RLDIN [pin 62] - RLDINV [pin 61] - RLDOUT [pin 63] - RLDREF [pin 60] - SCLK [pin 40] - START [pin 38] - TESTP_PACE_OUT1 [pin 17] - TESTP_PACE_OUT2 [pin 18] - VCAP1 [pin 28] - VCAP2 [pin 30] - VCAP3 [pin 55] - VCAP4 [pin 26] - VREFN [pin 25] - VREFP [pin 24] - WCT [pin 64] ### U3 — [MAX30102EFD+T](https://www.flux.ai/vasy_skral/max30102efdplust~r7h.md) - Symbol Style: Parametric - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://datasheets.maximintegrated.com/en/ds/MAX30102.pdf - Operating Voltage: 3.3V - Role Details: Digital SpO₂ and heart-rate sensor IC with I²C interface - Role: SpO₂ Sensor - Manufacturer Name: Maxim Integrated - Manufacturer Part Number: MAX30102EFD+T **Pins:** - ~INT [pin 13] - GND [pin 12] - IR_DRV [pin 6] - NC [pin 8] - NC [pin 14] - NC [pin 1] - NC [pin 7] - PGND [pin 4] - R_DRV [pin 5] - SCL [pin 2] - SDA [pin 3] - VDD [pin 11] - VLED+ [pin 10] - VLED+ [pin 9] ### U4 — [INA333AIDGKRG4](https://www.flux.ai/lcsc/ina333aidgkrg4~9ata.md) - JLCPCB Part Class: Extended Part - Role: Amplification - Role Details: Low-noise instrumentation amplifier for stethoscope analog front end - Manufacturer Part Number: INA333AIDGKRG4 - Package or Case Code: VSSOP-8_L3.0-W3.0-P0.65-LS4.9-BL - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C2060548 - Operating Voltage: 3.3V **Pins:** - REF [pin 5] - RG [pin 8] - RG [pin 1] - V- [pin 4] - V+ [pin 7] - VIN- [pin 2] - VIN+ [pin 3] - VOUT [pin 6] ### U5 — [ADMC401BSTZ](https://www.flux.ai/lcsc/admc401bstz~9dbm.md) - Manufacturer Name: ADI(亚德诺) - Role Details: MEMS microphone acoustic transducer for stethoscope - LCSC Part Number: C658582 - Package or Case Code: LQFP-144_L20.0-W20.0-P0.50-LS22.0-BL - JLCPCB Part Class: Extended Part - Manufacturer Part Number: ADMC401BSTZ - Operating Voltage: 3.3V - Role: Transducer **Pins:** - ~{BG} [pin 139] - ~{BGH} [pin 57] - ~{BMS} [pin 134] - ~{BR} [pin 15] - ~{DMS} [pin 136] - ~{PMS} [pin 135] - ~{POR} [pin 23] - ~{PWD} [pin 13] - ~{PWMSR} [pin 22] - ~{PWMTRIP} [pin 47] - ~{RD} [pin 137] - ~{RESET} [pin 24] - ~{WR} [pin 140] - A0 [pin 12] - A1 [pin 11] - A10 [pin 144] - A11 [pin 143] - A12 [pin 142] - A13 [pin 141] - A2 [pin 10] - A3 [pin 8] - A4 [pin 7] - A5 [pin 6] - A6 [pin 4] - A7 [pin 3] - A8 [pin 2] - A9 [pin 1] - AH [pin 56] - AL [pin 55] - ASHAN [pin 123] - AUX0 [pin 102] - AUX1 [pin 101] - AVDD [pin 113] - AVDD [pin 133] - AVSS [pin 114] - AVSS [pin 132] - BH [pin 54] - BL [pin 53] - BMODE [pin 18] - BSHAN [pin 122] - CAPB [pin 125] - CAPT [pin 120] - CH [pin 50] - CL [pin 49] - CLKIN [pin 29] - CLKOUT [pin 31] - CML [pin 127] - CONVST [pin 109] - D0 [pin 85] - D1 [pin 84] - D10 [pin 74] - D11 [pin 72] - D12 [pin 70] - D13 [pin 69] - D14 [pin 68] - D15 [pin 67] - D16 [pin 66] - D17 [pin 65] - D18 [pin 64] - D19 [pin 62] - D2 [pin 83] - D20 [pin 61] - D21 [pin 60] - D22 [pin 59] - D23 [pin 58] - D3 [pin 81] - D4 [pin 80] - D5 [pin 79] - D6 [pin 78] - D7 [pin 77] - D8 [pin 76] - D9 [pin 75] - DR0 [pin 40] - DR1A/F1 [pin 34] - DR1B/FI [pin 35] - DT0 [pin 42] - DT0 [pin 41] - DT1/FO [pin 36] - EIA [pin 108] - EIB [pin 107] - EIS [pin 105] - EIZ [pin 106] - ETU0 [pin 104] - ETU1 [pin 103] - GAIN [pin 129] - GND [pin 63] - GND [pin 110] - GND [pin 26] - GND [pin 82] - GND [pin 9] - GND [pin 33] - GND [pin 25] - GND [pin 52] - GND [pin 46] - GND [pin 27] - GND [pin 98] - GND [pin 112] - GND [pin 73] - GND [pin 21] - GND [pin 91] - GND [pin 138] - MMAP [pin 19] - NC [pin 16] - NC [pin 17] - P0 [pin 100] - P1 [pin 99] - P10 [pin 87] - P11 [pin 86] - P2 [pin 97] - P3 [pin 96] - P4 [pin 95] - P5 [pin 94] - P6 [pin 93] - P7 [pin 92] - P8 [pin 89] - P9 [pin 88] - PWDACK [pin 14] - PWMPOL [pin 28] - PWMSYNC [pin 48] - REFCOM [pin 118] - RFS1/~{IRQ0}/~{SROM} [pin 37] - SCLK0 [pin 44] - SCLK1 [pin 39] - SENSE [pin 131] - TFS0 [pin 43] - TFS1/~{IRQ1} [pin 38] - VDD [pin 20] - VDD [pin 32] - VDD [pin 90] - VDD [pin 111] - VDD [pin 51] - VDD [pin 5] - VDD [pin 45] - VDD [pin 71] - VIN0 [pin 124] - VIN1 [pin 126] - VIN2 [pin 128] - VIN3 [pin 130] - VIN4 [pin 121] - VIN5 [pin 119] - VIN6 [pin 117] - VIN7 [pin 115] - VREF [pin 116] - XTAL [pin 30] ### U6 — [MCP73871-2CCI/ML](https://www.flux.ai/adrian95/mcp73871-2cciml~xz9.md) - Manufacturer Part Number: MCP73871-2CCI/ML - Role Details: Li-ion battery charger IC with USB-C input - License: https://creativecommons.org/licenses/by/4.0/ - Operating Voltage: 5V - Manufacturer Name: Microchip Technology - Role: Power Management - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP73871-Data-Sheet-20002090E.pdf - Part Type: Integrated Circuit **Pins:** - ~PG [pin 6] - ~TE [pin 9] - CE [pin 17] - EP [pin 21] - IN_1 [pin 18] - IN_2 [pin 19] - OUT_1 [pin 1] - OUT_2 [pin 20] - PROG1 [pin 13] - PROG2 [pin 4] - PROG3 [pin 12] - SEL [pin 3] - STAT1/~LBO [pin 8] - STAT2 [pin 7] - THERM [pin 5] - VBAT_1 [pin 14] - VBAT_2 [pin 15] - VBAT_SENSE [pin 16] - VPCC [pin 2] - VSS_1 [pin 10] - VSS_2 [pin 11] ### U7 — [OPA188AIDBVR](https://www.flux.ai/jecstronic/opa188aidbvr~4yk.md) - Role Details: Low-noise audio amplifier for stethoscope analog front-end output - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fopa188 - Role: Amplification - Part Type: Operational Amplifier (OP-AMP) - Manufacturer Name: Texas Instruments - Manufacturer Part Number: OPA188AIDBVR - Operating Voltage: 3.3V **Pins:** - - [pin 4] - + [pin 3] - OUTPUT [pin 1] - V- [pin 2] - V+ [pin 5] ### U8 — [TLV62568DDC](https://www.flux.ai/kicad-part-library/tlv62568ddc~vt.md) - Operating Voltage: 5V - Manufacturer Part Number: TLV62568DDC - Role: Power Conversion - Datasheet URL: http://www.ti.com/lit/ds/symlink/tlv62568.pdf - Manufacturer Name: Texas Instruments Inc. - Role Details: Buck regulator for 3.3 V digital and analog rails - Package or Case Code: SOT-23-6 **Pins:** - EN [pin 1] - FB [pin 6] - GND [pin 2] - PG [pin 5] - SW [pin 3] - VIN [pin 4] ### U9 — [TPS25751SRSMR](https://www.flux.ai/3xalted0n3/tps25751srsmr~zv.md) - Operating Voltage: 5V - Package or Case Code: QFN40P400X400X100-33N-D - Manufacturer Part Number: TPS25751SRSMR - Role Details: USB PD controller with OVP/UVLO/OCP power path protection - Manufacturer Name: Texas Instruments - Role: Power Management - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps25751.pdf **Pins:** - ~{I2CC_IRQ} [pin 17] - ~{I2CT_IRQ} [pin 10] - ADCIN1 [pin 2] - ADCIN2 [pin 3] - CC1 [pin 24] - CC2 [pin 25] - GATE_VBUS [pin 21] - GATE_VSYS [pin 20] - GND_1 [pin 11] - GND_2 [pin 12] - GND_3 [pin 14] - GND_4 [pin 33] - GPIO0 [pin 5] - GPIO1 [pin 6] - GPIO11 [pin 13] - GPIO2 [pin 7] - GPIO3 [pin 18] - GPIO4/USB_P/LD1 [pin 22] - GPIO5/USB_N/LD2 [pin 23] - GPIO6 [pin 31] - GPIO7 [pin 30] - I2CC_SCL [pin 16] - I2CC_SDA [pin 15] - I2CT_SCL [pin 9] - I2CT_SDA [pin 8] - LDO_1V5 [pin 4] - LDO_3V3 [pin 1] - PP5V_1 [pin 28] - PP5V_2 [pin 29] - VBUS_1 [pin 26] - VBUS_2 [pin 27] - VIN_3V3 [pin 32] - VSYS [pin 19] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/coderbot/wireless-stethosope~xd](https://www.flux.ai/coderbot/wireless-stethosope~xd).* --- *Generated from [https://www.flux.ai/coderbot/wireless-stethosope~xd](https://www.flux.ai/coderbot/wireless-stethosope~xd)*