4 layers121 × 40 mm
PowerAmplifier
BlockWorker/ModularAudio
Compact, modular, versatile, hi-fi audio system concept.
156 parts2
4 layers40 × 40 mm
BatteryMonitor
BlockWorker/ModularAudio2Compact, modular, versatile, hi-fi audio system concept.
- Size
- 40 × 40 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 72
- Nets
- 59
- Pads
- 258
- Tracks, vias
- 386, 101
- Pours
- 282
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 11 Jul 2024
- Updated
- 26 Sep 2025
Overview
BatteryMonitor is an open-source printed circuit board by BlockWorker, from the BlockWorker/ModularAudio repository on GitHub. It is a 4-layer board of 40 × 40 mm with 72 parts on 59 nets, routed with 386 tracks and 101 vias.
It is built around the ADUM1252AWA+, BZT52C15 and NTMFS0D6N04XM, with the MMSZ4678 and NX138BKR among its other parts. Its parts include 26 capacitors, 21 resistors, 7 connectors, 4 diodes and 3 ICs. It belongs with the audio and music boards and the STM32 boards of this library.
Main components
5
ADUM1252AWA+
SOIC-8Bidirectional automatic direction、Open-drain buffer output、Hotswap、Clock stretching、Multi-voltage domain interface SOIC-8 I2C Isolators ROHSMaxim Integrated (Analog Devices)I2C Isolators
BZT52C15
SOD-123-65℃~+150℃ 1 Independent 100nA@1V 13.8V~15.6V 15V 200Ω 30Ω 370mW SOD-123 Zener Diodes ROHSDiodes IncorporatedZener Diodes
NTMFS0D6N04XM
SO-8FLMOSFETsonsemiMMSZ4678
SOD-123Zener Diodeshongjiacheng
NX138BKR
SOT-23-55℃~+150℃ 1 N-channel 1.5V 20.2pF 265mA 2pF 3.5Ω@10V 310mW 490pC@4.5V 60V SOT-23 MOSFETs ROHSNexperiaMOSFETs
Parts
72| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1µF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C7, C9, C11, C16, C20, C22, C23 |
| 6 | 10kΩ | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R7, R8 |
| 6 | 10Ω | Resistor_SMD:R_0603_1608Metric | R5, R6, R9, R10, R11, R12 |
| 6 | 220nF | Capacitor_SMD:C_0603_1608Metric | C10, C13, C14, C15, C17, C18 |
| 3 | 4.7kΩ | Resistor_SMD:R_0603_1608Metric | R14, R15, R21 |
| 2 | 0.1µF 100V | Capacitor_SMD:C_0603_1608Metric | C24, C25 |
| 2 | 100Ω | Resistor_SMD:R_0603_1608Metric | R16, R17 |
| 2 | 10MΩ | Resistor_SMD:R_0603_1608Metric | R18, R19 |
| 2 | 1nF | Capacitor_SMD:C_0603_1608Metric | C12, C19 |
| 2 | BZT52C15 | Diode_SMD:D_SOD-123 | D2, D3 |
| 2 | NTMFS0D6N04XM | BW_Active:ONSemi_SO8-FL_506FA | Q2, Q3 |
| 1 | 100pF | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 10µF 25V | Capacitor_SMD:C_0805_2012Metric | C8 |
| 1 | 10µF 50V | Capacitor_SMD:C_1206_3216Metric | C6 |
| 1 | 1MΩ | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 1mΩ 2W | Resistor_SMD:R_0612_1632Metric | R20 |
| 1 | 1µF 25V | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 3.3nF | Capacitor_SMD:C_0603_1608Metric | C26 |
| 1 | 40A | BW_PassiveMechanical:Fuse_2410_6125Metric | F1 |
| 1 | ADuM1252 | Package_SO:MSOP-8_3x3mm_P0.65mm | U3 |
| 1 | ALERT | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP5 |
| 1 | BAL_THERM | BW_Connectors:Amphenol_MINITEK_WTB_1.25_5P | J3 |
| 1 | BAT+ | BW_Connectors:Wuerth_REDCUBE-THR_WP-BUTR_7461057_NonPress | J2 |
| 1 | BAT- | BW_Connectors:Wuerth_REDCUBE-THR_WP-BUTR_7461057_NonPress | J5 |
| 1 | BQ76905 | BW_Active:VQFN-20-1EP_3.5x3.5mm_P0.5mm_EP2.05x2.05mm | U1 |
| 1 | I2C | BW_Connectors:Amphenol_MINITEK_WTB_1.25_4P | J4 |
| 1 | MMSZ4678 | Diode_SMD:D_SOD-123 | D4 |
| 1 | NX138BK | Package_TO_SOT_SMD:SOT-23-3 | Q1 |
| 1 | PACK_OUT | BW_Connectors:TE_2042274_Solder | J6 |
| 1 | PWR_SWITCH | BW_Connectors:Amphenol_MINITEK_WTB_1.25_2P | J7 |
| 1 | SCL | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP4 |
| 1 | SDA | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP3 |
| 1 | SS0840WS | Diode_SMD:D_SOD-323_HandSoldering | D1 |
| 1 | STM32L071KZUx | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U2 |
| 1 | SWD | Connector_PinSocket_1.27mm:PinSocket_1x05_P1.27mm_Vertical_SMD_Pin1Right | J1 |
| 1 | UART_RX | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP2 |
| 1 | UART_TX | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP1 |
| 1 | WAKE | Button_Switch_SMD:SW_SPST_TL3305A | SW1 |
The 71 most common of 72 parts.
Questions
How big is the BatteryMonitor PCB?
It measures 40 × 40 mm and has 4 copper layers, 1.61 mm thick.
What parts does the BatteryMonitor use?
72 parts, built around the ADUM1252AWA+, BZT52C15, NTMFS0D6N04XM and MMSZ4678. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the BatteryMonitor KiCad files?
From the BlockWorker/ModularAudio repository on GitHub, at the commit this page was made from: the board is BatteryMonitor/BatteryMonitor.kicad_pcb and its schematic 12VLDO/12VLDO.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BatteryMonitor design in my own project?
Its repository states no licence, so its author keeps all rights: ask BlockWorker before reusing the design.
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