# pocket-soudbox ## Description Pocket Soundbox – LiPo-Powered Cellular I2S MP3 Audio Player (SIMCom A7670E-LASE, Nano-SIM, I2S MP3 to PCM5101A DAC, FM8002E Amp, 1.8V↔3.3V UART/PWRKEY Level Shifting, Remapped J4, MP2315 3.3V Power Path, USB-C ESD/TVS) with power ON/OFF long-press control via SW2 and Q2 featuring pull-ups, RC debounce, and PFET safety clamp (#Cellular #I2S #LiPo #Audio #powerbutton #debounce #PFET) ## Project Details - **Owner:** sayurun - **Created:** 12/10/2025 - **Last Updated:** 12/11/2025 - **Visibility:** Public - **Connectivity:** Cellular - **Power Requirements:** USB - **ConnectorNetAudit:** J2:P1 -> [BAT_OUT] J2:P2 -> [GND] J6:P1 -> [USIM1_VDD] J6:P2 -> [USIM1_CLK] J6:P3 -> [USIM1_DATA] J6:P4 -> [USIM1_RST] J6:P5 -> [USIM1_DET] J6:P6 -> [GND] - **System Architecture:** flowchart TD Power[Power Subsystem] USBC[USB-C Interface] AO4407A[AO4407A MOSFET] SIMCOM[SIMCom A7670E-LASE] NanoSIM[Nano-SIM Socket] LevelShifter[Level Shifter\n1.8V↔3.3V] J4[External Connector J4] SPIFlash[W25Q64JVSSIQ] MP3Decoder[I2S MP3 Decoder] PCM5101A[PCM5101A] FM8002E[FM8002E] USBC --> Power USBC --> LevelShifter Power --> AO4407A AO4407A --> SIMCOM SIMCOM --> NanoSIM SIMCOM --> LevelShifter LevelShifter --> J4 Power --> SPIFlash SPIFlash --> MP3Decoder Power --> MP3Decoder MP3Decoder --> PCM5101A Power --> PCM5101A PCM5101A --> FM8002E Power --> FM8002E - **Domain:** Consumer Electronics - **License:** http://solderpad.org/licenses/SHL-2.1/ - **Project Name:** Pocket Soundbox – LiPo-Powered Cellular I2S MP3 Audio Player - **Software:** Arduino - **SIM Connector Change Log:** Renamed Nano-SIM socket from J2 to J6; kept LiPo connector as J2; reconnected U1 USIM1_VDD/CLK/DATA/RST/DET and GND to J6 VCC/CLK/IO/RST/DET/GND via protection and pull network, leaving USB-C ESD/TVS (D1, D2) unchanged. ## Key Components ### — [100nF0603](https://www.flux.ai/charleszard/100nf0603~2x.md) - Capacitance: 100nF - Substitute Manufacturer Part Number: C1591 - Package or Case Code: C_0603_1608Metric - Tolerance: 10% - Package: SMD_0603_1608Metric - Role: Debouncing - Voltage: 50V - Manufacturer Part Number: CL10B104KB8NNNC - Role Details: Debounce capacitor for part SW3, pin 1, and part SW4, pin 1 **Pins:** - ~ [pin 1] - ~ [pin 2] ### — [100nF0603](https://www.flux.ai/charleszard/100nf0603~2x.md) - Tolerance: 10% - Role Details: Debounce capacitor for part SW3, pin 1, and part SW4, pin 1 - Package or Case Code: C_0603_1608Metric - Substitute Manufacturer Part Number: C1591 - Capacitance: 100nF - Package: SMD_0603_1608Metric - Manufacturer Part Number: CL10B104KB8NNNC - Role: Debouncing - Voltage: 50V **Pins:** - ~ [pin 1] - ~ [pin 2] ### D — [AO4407A](https://www.flux.ai/jecstronic/ao4407a~yc0.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Datasheet URL: http://www.aosmd.com/res/data_sheets/AO4407A.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Manufacturer Part Number: AO4407A **Pins:** - D [pin 5] - D [pin 7] - D [pin 8] - D [pin 6] - G [pin 4] - S [pin 2] - S [pin 3] - S [pin 1] ### D1 — [SMBJ5.0CA-TR](https://www.flux.ai/lcsc/smbj5p0ca-tr~dop2.md) - Part Type: TVS - LCSC Part Number: C133658 - Manufacturer Name: ST(意法半导体) - Manufacturer Part Number: SMBJ5.0CA-TR - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-SMBJ5-0CA-TR_C133658.pdf - Product Info Url: https://lcsc.com/product-detail/TVS_STMicroelectronics_SMBJ5-0CA-TR_SMBJ5-0CA-TR_C133658.html - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### D2 — [SMF05CT2G](https://www.flux.ai/lcsc/smf05ct2g~mihw.md) - LCSC Part Number: C513065 - Product Info Url: https://lcsc.com/product-detail/Diodes-ESD_ON-Semiconductor-ON-SMF05CT2G_C513065.html - Part Type: ESD Protection Devices - JLCPCB Part Class: Extended Part - Package: SC-88-6_L2.0-W1.3-P0.65-LS2.1-BR - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2004241933_onsemi-SMF05CT2G_C513065.pdf - Role: Protection - Manufacturer Part Number: SMF05CT2G - Role Details: ESD protection for USB D+ and D– - Manufacturer Name: onsemi(安森美) - Package or Case Code: SC-88-6_L2.0-W1.3-P0.65-LS2.1-BR **Pins:** - A [pin 2] - C1 [pin 1] - C2 [pin 3] - C3 [pin 4] - C4 [pin 5] - C5 [pin 6] ### D4 — [SMF05CT2G](https://www.flux.ai/lcsc/smf05ct2g~mihw.md) - JLCPCB Part Class: Extended Part - Part Type: ESD Protection Devices - LCSC Part Number: C513065 - Product Info Url: https://lcsc.com/product-detail/Diodes-ESD_ON-Semiconductor-ON-SMF05CT2G_C513065.html - Role Details: ESD protection for SIM interface at J6 - Manufacturer Part Number: SMF05CT2G - Role: Protection - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2004241933_onsemi-SMF05CT2G_C513065.pdf - Manufacturer Name: onsemi(安森美) - Package or Case Code: SC-88-6_L2.0-W1.3-P0.65-LS2.1-BR **Pins:** - A [pin 2] - C1 [pin 1] - C2 [pin 3] - C3 [pin 4] - C4 [pin 5] - C5 [pin 6] ### DZ1 — [PZU7.5BA,115](https://www.flux.ai/lcsc/pzu7p5bac115~qm1c.md) - Package or Case Code: SOD-323_L1.8-W1.3-LS2.5-RD - Part Type: Zener Diodes - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407251004_Nexperia-PZU7-5BA-115_C553789.pdf - Manufacturer Part Number: PZU7.5BA,115 - Package: SOD-323_L1.8-W1.3-LS2.5-RD - Product Info Url: https://lcsc.com/product-detail/presales_Nexperia-PZU7-5BA-115_C553789.html - Manufacturer Name: Nexperia(安世) - Role Details: Gate clamp for PFET AO4407A gate to source - JLCPCB Part Class: Extended Part - Role: Protection - LCSC Part Number: C553789 **Pins:** - A [pin 2] - K [pin 1] ### IC1 — [PCM5101AQPWRQ1](https://www.flux.ai/adrian95/pcm5101aqpwrq1~qev.md) - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Manufacturer Part Number: PCM5101AQPWRQ1 - Package or Case Code: SOP65P640X120-20N - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: http://www.ti.com/lit/gpn/pcm5101a-q1 **Pins:** - AGND [pin 9] - AVDD [pin 8] - BCK [pin 13] - CAPM [pin 4] - CAPP [pin 2] - CPGND [pin 3] - CPVDD [pin 1] - DEMP [pin 10] - DGND [pin 19] - DIN [pin 14] - DVDD [pin 20] - FLT [pin 11] - FMT [pin 16] - LDOO [pin 18] - LRCK [pin 15] - OUTL [pin 6] - OUTR [pin 7] - SCK [pin 12] - VNEG [pin 5] - XSMT [pin 17] ### J1 — [Type-C-2.0-6Pin](https://www.flux.ai/jharwinbarrozo/type-c-2p0-6pin~wh.md) - Part Type: Connector - Manufacturer Part Number: Type-C-2.0-6Pin - Datasheet URL: https://datasheet.lcsc.com/lcsc/2204071830_CIKI-Type-C-2-0-6Pin_C2987385.pdf - Manufacturer Name: CIKI **Pins:** - CC1 - CC2 - GND - GND__1 - SHIELD - SHIELD__1 - SHIELD__2 - SHIELD__3 - V-BUS - V-BUS__1 ### J2 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/s2b-ph-k-slfsn~brb.md) - Part Type: Connector - Manufacturer Name: JST Sales America Inc. - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) - 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] ### J3 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/s2b-ph-k-slfsn~brb.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Name: JST Sales America Inc. - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### J4 — [Pin Header 02x04 2.54mm Vertical SMD](https://www.flux.ai/tyler-s/pin-header-02x04-2p54mm-vertical-smd~zb.md) - Datasheet URL: https://cdn.amphenol-cs.com/media/wysiwyg/files/drawing/10129383.pdf - Manufacturer Name: Amphenol - Part Type: Connector - Manufacturer Part Number: 10129383-908001ALF **Pins:** - P1 - P2 - P3 - P4 - P5 - P6 - P7 - P8 ### J5 — [Pin Header 01x06 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x06-2p54mm-vertical~lzd.md) - Role: Connector - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: SPI Flash access header for U2 (CS, CLK, IO0–IO3, 3V3, GND) **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### J6 — [SIM8051-6-0-14-00-A](https://www.flux.ai/jecstronic/sim8051-6-0-14-00-a~7b7.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Nano-SIM card socket for cellular module - Manufacturer Part Number: SIM8051-6-0-14-00-A - Part Type: Connector - Role: Connector - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/GCT%20PDFs/SIM8051_Spec.pdf - Manufacturer Name: GCT **Pins:** - CLK [pin C3] - GND [pin C5] - I/O [pin C7] - RST [pin C2] - VCC [pin C1] - VPP [pin C6] ### LED1 — [LED-0805-Template](https://www.flux.ai/vasy_skral/led-0805-template~dfa.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [LED-0805-Template](https://www.flux.ai/vasy_skral/led-0805-template~dfa.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### Q2 — [2N7002](https://www.flux.ai/lcsc/2n7002~13ip.md) - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/MOSFET_MDD-Microdiode-Electronics-2N7002_C472906.html - Package or Case Code: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - Part Type: MOSFETs - Role Details: Soft-latch MOSFET for AO4407A gate control - Transistor Type: N-channel MOSFET - Drain to Source Voltage: 60V - Continuous Drain Current: 200mA at 25°C - Role: Switching - Manufacturer Part Number: 2N7002 - Package: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - LCSC Part Number: C472906 - Manufacturer Name: MDD(辰达半导体) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407101108_MDD-Microdiode-Semiconductor-2N7002_C472906.pdf **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### SW2 — [B3U-3000P](https://www.flux.ai/adrian95/b3u-3000p~l3s.md) - Manufacturer Name: Omron Electronics Inc-EMC Div - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3u.pdf - Part Type: Switch - Manufacturer Part Number: B3U-3000P **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW3 — [B3U-3000P](https://www.flux.ai/adrian95/b3u-3000p~l3s.md) - Part Type: Switch - Manufacturer Part Number: B3U-3000P - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Omron Electronics Inc-EMC Div - Datasheet URL: https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3u.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW4 — [B3U-3000P](https://www.flux.ai/adrian95/b3u-3000p~l3s.md) - Manufacturer Part Number: B3U-3000P - Part Type: Switch - Datasheet URL: https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3u.pdf - Manufacturer Name: Omron Electronics Inc-EMC Div - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] ### U? — [VS1053B-L](https://www.flux.ai/jecstronic/vs1053b-l~bo9.md) - Role: Modulation / Demodulation - Manufacturer Part Number: VS1053B-L - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809050216_VLSI-Solution-VS1053B-L_C9922.pdf - Manufacturer Name: VLSI Solution - Package: LQFP-48 - Role Details: MP3 decoder, I2S output to PCM5101A - Part Type: Integrated Circuit **Pins:** - ~CS~ [pin 23] - ~DCS~/BSYNC [pin 13] - ~RESET~ [pin 3] - ~TEST~ [pin 32] - AGND0 [pin 37] - AGND1 [pin 40] - AGND2 [pin 41] - AGND3 [pin 47] - AVDD0 [pin 38] - AVDD1 [pin 43] - AVDD2 [pin 45] - CVDD0 [pin 5] - CVDD1 [pin 7] - CVDD2 [pin 24] - CVDD3 [pin 31] - DGND0 [pin 4] - DGND1 [pin 16] - DGND2 [pin 20] - DGND3 [pin 21] - DGND4 [pin 22] - DREQ [pin 8] - GBUF [pin 42] - GND [pin 35] - GPIO0 [pin 33] - GPIO1 [pin 34] - GPIO2/DCLK [pin 9] - GPIO3/SDATA [pin 10] - GPIO4/I2S_LROUT [pin 36] - GPIO5/I2S_MCLK [pin 25] - GPIO6/I2S_SCLK [pin 11] - GPIO7/I2S_SDATA [pin 12] - IOVDD0 [pin 6] - IOVDD1 [pin 14] - IOVDD2 [pin 19] - LEFT [pin 46] - LINE2 [pin 48] - MICN [pin 2] - MICP/LINE1 [pin 1] - RCAP [pin 44] - RIGHT [pin 39] - RX [pin 26] - SCLK [pin 28] - SI [pin 29] - SO [pin 30] - TX [pin 27] - VCO [pin 15] - XTALI [pin 18] - XTALO [pin 17] ### U1 — [A7670C-LASE](https://www.flux.ai/lcsc/a7670c-lase~cbwy.md) - LCSC Part Number: C2888406 - Package or Case Code: LGA-124_L24.0-W24.0-P1.0-A7670C-LASS - Role Details: Main cellular module with I2C/SPI/UART interfaces - Role: Cellular Modem - JLCPCB Part Class: Extended Part - Manufacturer Name: SIMCOM(芯讯通无线科技) - Manufacturer Part Number: A7670C-LASE **Pins:** - 1PPS [pin 100] - 1V8_GNSS [pin 97] - ADC [pin 25] - AP_WAKEUP [pin 3] - BT_ANT [pin 93] - EAR_N [pin 41] - EAR_P [pin 40] - GND [pin 17] - GND [pin 29] - GND [pin 39] - GND [pin 45] - GND [pin 59] - GND [pin 61] - GND [pin 63] - GND [pin 65] - GND [pin 69] - GND [pin 71] - GND [pin 73] - GND [pin 75] - GND [pin 77] - GND [pin 79] - GND [pin 81] - GND [pin 83] - GND [pin 85] - GND [pin 87] - GND [pin 89] - GND [pin 91] - GND [pin 2] - GND [pin 18] - GND [pin 46] - GND [pin 54] - GND [pin 58] - GND [pin 62] - GND [pin 64] - GND [pin 70] - GND [pin 72] - GND [pin 74] - GND [pin 76] - GND [pin 78] - GND [pin 80] - GND [pin 82] - GND [pin 84] - GND [pin 86] - GND [pin 88] - GND [pin 92] - GND [pin 94] - GNSS_ANT [pin 90] - GNSS_PWR_EN/MK_IN_3 [pin 20] - GNSS_PWRCTL [pin 98] - GNSS_RXD [pin 96] - GNSS_TXD [pin 95] - GNSS_VBKP [pin 116] - GPIO_00 [pin 4] - GPIO_01 [pin 5] - GPIO_02 [pin 6] - GPIO_03 [pin 7] - GPIO_04 [pin 8] - GPIO_05 [pin 19] - GPIO_07/MK_OUT_3 [pin 21] - GPIO_08 [pin 48] - GPIO_09 [pin 52] - GPIO_10 [pin 66] - GPIO_11/MK_OUT_5 [pin 67] - GPIO_12/MK_IN_5 [pin 68] - GPIO_13/MK_OUT_6 [pin 35] - GPIO_14/MK_IN_6 [pin 36] - GPIO_15/MK_OUT_2 [pin 44] - GPIO_16/MK_IN_2 [pin 47] - GPIO_17 [pin 26] - GPIO_18 [pin 53] - GPIO_19/LCD_BL_PWM [pin 101] - GPIO_20/LCD_SPI_CLK [pin 102] - GPIO_21/LCD_SPI_TXD [pin 103] - GPIO_22/LCD_SPI_RXD [pin 104] - GPIO_23/LCD_SPI_CS [pin 105] - GPIO_24/LCD_RST [pin 106] - GPIO_25/LCD_DCX [pin 107] - GPIO_26 [pin 117] - GPIO_27 [pin 118] - GPIO_28 [pin 119] - GPIO_29 [pin 120] - GPIO_30 [pin 121] - GPIO_31 [pin 122] - GPIO_32 [pin 123] - GPIO_33 [pin 124] - I2C_SCL [pin 38] - I2C_SDA [pin 37] - MIC_N [pin 43] - MIC_P [pin 42] - NC [pin 113] - NC [pin 115] - NC [pin 114] - PWRKEY [pin 1] - RESET [pin 16] - RF_ANT [pin 60] - RXD [pin 10] - SPI_CLK [pin 11] - SPI_CS [pin 12] - SPI_MISO [pin 14] - SPI_MOSI [pin 13] - TXD [pin 9] - UART_LOG_RX [pin 22] - UART_LOG_TX [pin 23] - UART3_RXD [pin 49] - UART3_TXD [pin 50] - USB_DM [pin 28] - USB_DP [pin 27] - USIM1_CLK [pin 32] - USIM1_DATA [pin 31] - USIM1_DET [pin 34] - USIM1_RST [pin 33] - USIM1_VDD [pin 30] - USIM2_CLK [pin 109] - USIM2_DATA [pin 108] - USIM2_DET [pin 112] - USIM2_RST [pin 111] - USIM2_VDD [pin 110] - VBAT [pin 55] - VBAT [pin 57] - VBAT [pin 56] - VBAT_ADC [pin 51] - VBUS [pin 24] - VDD_1V8 [pin 15] - VDD_2V8 [pin 99] ### U2 — [W25Q64JVSSIQ](https://www.flux.ai/lcsc/w25q64jvssiq~ias3.md) - Frequency: 133MHz - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912211532_Winbond-Elec-W25Q64JVSSIQ_C179171.pdf - Voltage Supply: 2.7 ~ 3.6V - JLCPCB Part Class: Extended Part - Manufacturer Name: WINBOND(华邦) - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_Winbond-Elec-W25Q64JVSSIQ_C179171.html - LCSC Part Number: C179171 - Package or Case Code: SOIC-8_L5.3-W5.3-P1.27-LS8.0-BL - Part Type: NOR FLASH - Operating Temperature: -40°C ~ 85°C (TA) - Manufacturer Part Number: W25Q64JVSSIQ **Pins:** - ~{CS} [pin 1] - CLK [pin 6] - DI(IO0) [pin 5] - DO(IO1) [pin 2] - GND [pin 4] - HOLD#orRESET#(IO3) [pin 7] - VCC [pin 8] - WP#(IO2) [pin 3] ### U3 — [FM8002E](https://www.flux.ai/lcsc/fm8002e~6ft0.md) - Package or Case Code: SOP-8_L4.9-W3.9-P1.27-LS6.0-BL - Product Info Url: https://lcsc.com/product-detail/Others_Shenzhen-Fuman-Elec-FM8002E_C340921.html - Manufacturer Name: FM(富满) - Manufacturer Part Number: FM8002E - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2202251530_Shenzhen-Fuman-Elec-FM8002E_C340921.pdf - Part Type: Audio Power OpAmps - LCSC Part Number: C340921 **Pins:** - -IN [pin 4] - +IN [pin 3] - BYPASS [pin 2] - GND [pin 7] - SHUTDOWN [pin 1] - VDD [pin 6] - VO1 [pin 5] - VO2 [pin 8] ### U4 — [SLM6400](https://www.flux.ai/lcsc/slm6400~bgrf.md) - JLCPCB Part Class: Extended Part - Manufacturer Name: 无锡松朗微 - Package or Case Code: DFN-8_L3.0-W3.0-P0.65-BL-EP - LCSC Part Number: C338664 - Product Info Url: https://lcsc.com/product-detail/Others_SOLA-IC-SLM6400_C338664.html - Part Type: Battery Management ICs - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2007231614_SOLA-IC-SLM6400_C338664.pdf - Manufacturer Part Number: SLM6400 **Pins:** - BAT [pin 5] - EP [pin 9] - GND [pin 3] - NCE [pin 8] - NCH [pin 7] - NPG [pin 6] - NTC [pin 1] - PROG [pin 2] - VCC [pin 4] ### U5 — [MP2315SGJ](https://www.flux.ai/monolithicpower/mp2315sgj~lcs.md) - Manufacturer Name: Monolithic Power Systems - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/1078?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - Package or Case Code: TSOT23-8_MP2315S_MNP - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP2315S - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/M/P/MP2315S_1078_1.jpg - Manufacturer Part Number: MP2315SGJ **Pins:** - AAM [pin 1] - BST [pin 5] - EN [pin 6] - FB [pin 8] - GND [pin 4] - IN [pin 2] - SW [pin 3] - VCC [pin 7] ### U6 — [SN74LVC2T45DCTT](https://www.flux.ai/lcsc/sn74lvc2t45dctt~xmz.md) - Package or Case Code: SSOP-8_L3.1-W2.8-P0.65-LS4.0-BL - Manufacturer Part Number: SN74LVC2T45DCTT - Part Type: Translators / Level Shifters - Manufacturer Name: TI(德州仪器) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010103_Texas-Instruments-SN74LVC2T45DCTT_C347590.pdf - LCSC Part Number: C347590 - Role Details: 1.8V↔3.3V level shifting for UART TX/RX and PWRKEY signals - JLCPCB Part Class: Extended Part - Role: Logic-level Shifting - Product Info Url: https://lcsc.com/product-detail/Others_Texas-Instruments-TI-SN74LVC2T45DCTT_C347590.html - Package: SSOP-8_L3.1-W2.8-P0.65-LS4.0-BL **Pins:** - A1 [pin 2] - A2 [pin 3] - B1 [pin 7] - B2 [pin 6] - DIR [pin 5] - GND [pin 4] - VCCA [pin 1] - VCCB [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/sayurun/pocket-soudbox~u2](https://www.flux.ai/sayurun/pocket-soudbox~u2).* --- *Generated from [https://www.flux.ai/sayurun/pocket-soudbox~u2](https://www.flux.ai/sayurun/pocket-soudbox~u2)*