2 layers57 × 55.2 mm
LogicAnalyzer
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
10 parts5.1kGPL-3.0
2 layers15.2 × 12.7 mm
Battery reg module
johnmgreenwell/battery-reg-moduleCustom lithium-polymer battery voltage monitor and regulator module
- Size
- 15.2 × 12.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 7
- Pads
- 28
- Tracks, vias
- 76, 4
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Jan 2024
- Updated
- 13 Apr 2025
Overview
Battery reg module is an open-source printed circuit board by johnmgreenwell, from the johnmgreenwell/battery-reg-module repository on GitHub, published under the MIT licence. It is a 2-layer board of 15.2 × 12.7 mm with 10 parts on 7 nets, routed with 76 tracks and 4 vias.
Its parts include 3 resistors, 2 capacitors, 2 ICs and 2 connectors. It belongs with the power boards of this library.
README
README.mdBattery Regulator Module
Custom lithium-polymer battery voltage monitor and regulator module.
Overview
This custom module is designed as a drop-in for small-scale electronics projects providing 3.3V linear regulated voltage output from a raw lithium polymer cell input. The battery input voltage is monitored by the MIC2779 whose output enables or disables the regulated output supply. It is configured with hysteresis to cutoff output when the battery voltage reaches 3.1V and to then hold in reset until the battery voltage exceeds 3.6V.
The module supports the 1.5A maximum current limitations of the regulator chip AP7362 used.
This module may be combined with a Lipo charger module such as the TP4056 (along with any in-circuit charging mods as required) for a complete custom battery charging/monitoring/regulation for small-scale electronics projects.
The zipped gerber files provided may be uploaded to a PCB manufacturer for fabrication. Below is the automatic rendering of the uploaded gerbers by OSHPark.
Schematic
The schematic for the circuit is provided below as designed in Kicad 9.
License
MIT © 2024 John Greenwell
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1, J2 |
| 1 | 340k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 56k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 604k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | AP7362-33SP-13 | Footprints:SOIC127P600X163-9N | U2 |
| 1 | MIC2779H-1YM5-TR | Footprints:SOT-23-5_M5_MCH-L | U1 |
The 9 most common of 10 parts.
Questions
How big is the Battery reg module PCB?
It measures 15.2 × 12.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Battery reg module use?
10 parts. 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 Battery reg module KiCad files?
From the johnmgreenwell/battery-reg-module repository on GitHub, at the commit this page was made from: the board is battery-reg-module.kicad_pcb and its schematic battery-reg-module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Battery reg module design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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