# AI Brick Phone 8dcd ## Description AI Brick Phone — 3.3V Synchronous Buck Upgrade (5V→3.3V ≥1A, Low‑Noise for ESP32 & Audio/ADC) ## Project Details - **Owner:** dacre - **Created:** 3/16/2026 - **Last Updated:** 3/16/2026 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ ## Key Components ### BOOT — [PTS815](https://www.flux.ai/vasy_skral/pts815.md) - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS - Part Type: Switch - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Manufacturer Name: C&K **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### CHRG — [LED-0805-Template-2](https://www.flux.ai/vasy_skral/led-0805-template-2.md) - Part Type: LED - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### D1 — [1N5819HW-7-F](https://www.flux.ai/jecstronic/1n5819hw-7-f.md) - Manufacturer Name: Diodes Incorporated - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds30217.pdf - Manufacturer Part Number: 1N5819HW-7-F - Part Type: Diode **Pins:** - A [pin 2] - K [pin 1] ### D2 — [WE-TVS-82400102](https://www.flux.ai/vasy_skral/we-tvs-82400102.md) - Datasheet URL: https://katalog.we-online.de/pbs/datasheet/82400102.pdf - Manufacturer Name: Würth Elektronik - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Protection - Manufacturer Part Number: 82400102 **Pins:** - GND [pin 2] - IO1 [pin 6] - IO1 [pin 1] - IO2 [pin 4] - IO2 [pin 3] - VDD [pin 5] ### ESP1 — [ESP32-WROVER-E](https://www.flux.ai/vasy_skral/esp32-wrover-e.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wrover-e_esp32-wrover-ie_datasheet_en.pdf - Manufacturer Part Number: ESP32-WROVER-E - Manufacturer Name: Espressif Systems - Part Type: Module **Pins:** - <=EXP [pin 39_2] - <=GND [pin 1] - 3V3 [pin 2] - EN [pin 3] - EXP [pin 51] - EXP [pin 45] - EXP [pin 39_6] - EXP [pin 50] - EXP [pin 39_1] - EXP [pin 48] - EXP [pin 39_7] - EXP [pin 39_3] - EXP [pin 41] - EXP [pin 44] - EXP [pin 39_4] - EXP [pin 40] - EXP [pin 42] - EXP [pin 43] - EXP [pin 39_9] - EXP [pin 49] - EXP [pin 47] - EXP [pin 39_8] - EXP [pin 39_5] - EXP [pin 46] - GND [pin 38] - GND [pin 15] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - 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 21] - NC [pin 32] - NC [pin 27] - NC [pin 17] - NC [pin 28] - NC [pin 19] - NC [pin 18] - NC [pin 20] - NC => [pin 22] - RXD0 [pin 34] - SENSOR_VN [pin 5] - SENSOR_VP [pin 4] - TXD0 [pin 35] ### FB1 — [Ferrite Bead 0603](https://www.flux.ai/vasy_skral/ferrite-bead-0603.md) - Manufacturer Part Number: 74279263 - Part Type: Inductor **Pins:** - ~ [pin 1] - ~ [pin 2] ### FB2 — [Ferrite Bead 0603](https://www.flux.ai/vasy_skral/ferrite-bead-0603.md) - Part Type: Inductor - Manufacturer Part Number: 74279263 **Pins:** - ~ [pin 1] - ~ [pin 2] ### FB3 — [Ferrite Bead 0603](https://www.flux.ai/vasy_skral/ferrite-bead-0603.md) - Part Type: Inductor - Manufacturer Part Number: 74279263 **Pins:** - ~ [pin 1] - ~ [pin 2] ### FB4 — [Ferrite Bead 0603](https://www.flux.ai/vasy_skral/ferrite-bead-0603.md) - Manufacturer Part Number: 74279263 - Part Type: Inductor **Pins:** - ~ [pin 1] - ~ [pin 2] ### IC1 — [CH340C](https://www.flux.ai/vasyl/ch340c.md) - Manufacturer Name: Wah - Manufacturer Part Number: CH340C - Datasheet URL: https://datasheet.lcsc.com/szlcsc/Jiangsu-Qin-Heng-CH340C_C84681.pdf - Part Type: Integrated Circuit **Pins:** - ~CTS [pin 9] - ~DCD [pin 12] - ~DSR [pin 10] - ~DTR [pin 13] - ~RI [pin 11] - ~RTS [pin 14] - GND [pin 1] - NC [pin 7] - NC [pin 8] - R232 [pin 15] - RXD [pin 3] - TXD [pin 2] - UD- [pin 6] - UD+ [pin 5] - V3 [pin 4] - VCC [pin 16] ### IC2 — [ES8311](https://www.flux.ai/vasy_skral/es8311.md) - Datasheet URL: http://www.everest-semi.com/pdf/ES8311%20PB.pdf - Package or Case Code: QFN40P300X300X60-21N - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: Parametric - Manufacturer Part Number: ES8311 - Manufacturer Name: Everest-semi(Everest Semiconductor) - Part Type: Integrated Circuit **Pins:** - ADCVREF [pin 15] - AGND [pin 10] - ASDOUT [pin 7] - AVDD [pin 11] - CCLK [pin 1] - CDATA [pin 19] - CE [pin 20] - DACVREF [pin 14] - DGND [pin 5] - DSDIN [pin 9] - DVDD [pin 4] - EP [pin 21] - LRCK [pin 8] - MCLK [pin 2] - MIC1N [pin 17] - MIC1P/DMIC_SDA [pin 18] - OUTN [pin 13] - OUTP [pin 12] - PVDD [pin 3] - SCLK/DMIC_SCL [pin 6] - VMID [pin 16] ### J1 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/s2b-ph-k-slfsn.md) - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) - Part Type: Connector - Manufacturer Name: JST Sales America Inc. - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### MK1 — [LMA3722T421-OA5](https://www.flux.ai/vasy_skral/lma3722t421-oa5.md) - Part Type: Audio - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.lcsc.com/datasheet/C5373233.pdf - Manufacturer Part Number: LMA3722T421-OA5 - Symbol Style: Parametric - Manufacturer Name: LinkMems - Package or Case Code: SMD **Pins:** - GND [pin 2] - GND__1 [pin 3] - OUTPUT [pin 1] - VDD [pin 4] ### MK2 — [LMA3722T421-OA5](https://www.flux.ai/vasy_skral/lma3722t421-oa5.md) - Manufacturer Name: LinkMems - Package or Case Code: SMD - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LMA3722T421-OA5 - Datasheet URL: https://www.lcsc.com/datasheet/C5373233.pdf - Part Type: Audio - Symbol Style: Parametric **Pins:** - GND [pin 2] - GND__1 [pin 3] - OUTPUT [pin 1] - VDD [pin 4] ### PWR — [LED-0805-Template-2](https://www.flux.ai/vasy_skral/led-0805-template-2.md) - Part Type: LED - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### Q1 — BSS138 - Manufacturer Part Number: BSS138 - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Name: onsemi - Part Type: Transistor **Pins:** - D - G - S ### Q2 — BSS138 - Part Type: Transistor - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Part Number: BSS138 **Pins:** - D - G - S ### Q3 — [AO3401A](https://www.flux.ai/jecstronic/ao3401a.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Manufacturer Part Number: AO3401A - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2007171935_HUASHUO-AO3401A_C700954.pdf - Manufacturer Name: HUASHUO **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### RST — [PTS815](https://www.flux.ai/vasy_skral/pts815.md) - Manufacturer Name: C&K - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Part Type: Switch - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### STDB — [LED-0805-Template-2](https://www.flux.ai/vasy_skral/led-0805-template-2.md) - Part Type: LED - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### SW1 — [PEC12R-2220F-S0024](https://www.flux.ai/vasy_skral/pec12r-2220f-s0024.md) - Part Type: Rotary encoder - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/PEC12R.pdf - Manufacturer Part Number: PEC12R-2220F-S0024 - Manufacturer Name: Bourns Inc. **Pins:** - A [pin A] - B [pin B] - C [pin C] - S1 [pin S1] - S2 [pin S2] ### U1 — [TPS62162QDSGRQ1](https://www.flux.ai/adrian95/tps62162qdsgrq1.md) - Datasheet URL: https://www.ti.com/product/TPS62162 - Role: Power Conversion - Manufacturer Name: Texas Instruments - Package or Case Code: SON50P200X200X80-9N - Manufacturer Part Number: TPS62162QDSGRQ1 - License: https://creativecommons.org/licenses/by/4.0/ - Operating Voltage: 3.3V - Part Type: Power Management **Pins:** - AGND [pin 4] - EN [pin 3] - EP [pin 9] - FB [pin 5] - PG [pin 8] - PGND [pin 1] - SW [pin 7] - VIN [pin 2] - VOS [pin 6] ### U1 — [AMS1117-3.3](https://www.flux.ai/vasy_skral/ams1117-33.md) - Manufacturer Part Number: AMS1117-3.3 - Manufacturer Name: AMS - Part Type: Integrated Circuit - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811021917_Advanced-Monolithic-Systems-AMS1117_C6188.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: Parametric **Pins:** - GND [pin 1] - TAB(VOUT) [pin 4] - VIN [pin 3] - VOUT [pin 2] ### U2 — [NS4150B](https://www.flux.ai/lcsc/ns4150b.md) - Package or Case Code: MSOP-8_L3.0-W3.0-P0.65-LS5.0-BL - Manufacturer Name: Nsiway(纳芯威) - Supply Voltage: 3~5.25V - JLCPCB Part Class: Extended Part - Part Type: Audio Power OpAmps - LCSC Part Number: C189961 - Manufacturer Part Number: NS4150B - Product Info Url: https://lcsc.com/product-detail/Audio-Power-OpAmps_Shenzhen-Nsiway-Tech-NS4150_C189961.html - IC Type: Class D Amplifier - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2209161630_Shenzhen-Nsiway-Tech-NS4150B_C189961.pdf **Pins:** - Bypass [pin 2] - CTRL [pin 1] - GND [pin 7] - INN [pin 4] - INP [pin 3] - VCC [pin 6] - VON [pin 5] - VoP [pin 8] ### U3 — [AP5056SPER](https://www.flux.ai/lcsc/ap5056sper.md) - Manufacturer Name: chipown(芯朋微电子) - Manufacturer Part Number: AP5056SPER - Package or Case Code: SOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2005142138_Wuxi-Chipown-Micro-electronics-AP5056SPER_C414191.pdf - LCSC Part Number: C414191 - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/PMIC-Battery-Management_Wuxi-Chipown-Micro-electronics-AP5056SPER_C414191.html - Part Type: Battery Management ICs **Pins:** - ~{CHRG} [pin 7] - ~{STDBY} [pin 6] - BAT [pin 5] - CE [pin 8] - EP [pin 9] - GND [pin 3] - PROG [pin 2] - TEMP [pin 1] - VCC [pin 4] ### U4 — [ES7210](https://www.flux.ai/lcsc/es7210.md) - Manufacturer Name: Everest-semi(顺芯) - Part Type: Codec ICs - Symbol Style: Parametric - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Codec-ICs_Everest-Semiconductor-ES7210_C365743.html - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1912111437_Everest-semi-Everest-Semiconductor-ES7210_C365743.pdf - LCSC Part Number: C365743 - Package or Case Code: 32-QFN - Manufacturer Part Number: ES7210 **Pins:** - AD0 [pin 1] - AD1 [pin 2] - CCLK [pin 4] - CDATA [pin 3] - DMIC_CLK [pin 14] - EP [pin 33] - GNDA [pin 21] - GNDD [pin 8] - INT [pin 13] - LRCK [pin 10] - MCLK [pin 5] - MIC1N [pin 15] - MIC1P [pin 16] - MIC2N [pin 20] - MIC2P [pin 19] - MIC3N [pin 32] - MIC3P [pin 31] - MIC4N [pin 27] - MIC4P [pin 28] - MICBIAS12 [pin 24] - MICBIAS34 [pin 26] - REFP12 [pin 17] - REFP34 [pin 29] - REFQ12 [pin 18] - REFQ34 [pin 30] - REFQM [pin 25] - SCLK [pin 9] - SDOUT1/TDMOUT [pin 11] - SDOUT2/TDMIN [pin 12] - VDDA [pin 22] - VDDD [pin 7] - VDDM [pin 23] - VDDP [pin 6] ### U5 — [MCP73831T-2ACI/OT](https://www.flux.ai/adrian95/mcp73831t-2aciot.md) - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP73831-Family-Data-Sheet-DS20001984H.pdf - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MCP73831T-2ACI/OT - Manufacturer Name: Microchip Technology **Pins:** - PROG [pin 5] - STAT [pin 1] - VBAT [pin 3] - VIN [pin 4] - VSS [pin 2] ### U6 — [MCP2561FD-E/P](https://www.flux.ai/vasy_skral/mcp2561fd-ep.md) - Part Type: Integrated Circuit - Manufacturer Name: Microchip - Manufacturer Part Number: MCP2561FD-E/P - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/20005284A.pdf **Pins:** - CANH [pin 7] - CANL [pin 6] - RXD [pin 4] - SPLIT [pin 5] - STBY [pin 8] - TXD [pin 1] - VDD [pin 3] - VSS [pin 2] ### USB1 — [TYPE-C-31-M-12](https://www.flux.ai/vasy_skral/type-c-31-m-12.md) - Manufacturer Name: Korean Hroparts Elec - Symbol Style: Parametric - Manufacturer Part Number: TYPE-C-31-M-12 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Datasheet URL: https://datasheet.lcsc.com/lcsc/2205251630_Korean-Hroparts-Elec-TYPE-C-31-M-12_C165948.pdf **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin B1A12] - GND [pin A1B12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin S3] - SHIELD [pin S1] - SHIELD [pin S4] - SHIELD [pin S2] - VBUS [pin B4A9] - VBUS [pin A4B9] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/dacre/ai-brick-phone-8dcd](https://www.flux.ai/dacre/ai-brick-phone-8dcd).* --- *Generated from [https://www.flux.ai/dacre/ai-brick-phone-8dcd](https://www.flux.ai/dacre/ai-brick-phone-8dcd)*