Boardoza MCP73831 Lithium Battery Charger Breakout Board
Compact single-cell Li-Ion/Li-Po battery charger module based on Microchip MCP73831 with USB Type-C input and adjustable charge current.
Boardoza MCP73831 Module – Module
The Boardoza MCP73831 Module is a compact single-cell Li-Ion / Li-Polymer battery charger built around the Microchip MCP73831 linear charge management controller. Designed for space-limited and cost-sensitive applications, it provides a simple, reliable, and efficient charging solution with minimal external components.
This module is ideal for portable devices and embedded systems that require direct USB or 5V DC input. The onboard USB Type-C connector and solderable input pads offer flexible power input options, while the adjustable charge current allows easy adaptation for various battery capacities.
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Key Features
- Microchip MCP73831 Charge Controller: High-accuracy linear charge management IC.
- Wide Input Voltage Range: Operates from 3.75V to 6V (USB and DC supply compatible).
- Programmable Charge Current: Up to 500 mA, adjustable via onboard resistor (R3).
- Integrated Power Input Options: USB Type-C connector and solder pads for flexibility.
- Full Battery Protection: Reverse discharge, thermal regulation, and voltage monitoring.
- Compact Design: 20mm × 40mm board size, ideal for portable projects.
- Automatic Charge Termination: Stops charging when battery reaches full voltage (4.2V).
Technical Specifications
Manufacturer: Microchip Technology
Model: MCP73831
Input Voltage Range: 3.75V – 6V
Output (Charge) Voltage: 4.2V (fixed, 1S Li-Ion/Li-Po)
Charge Current: Up to 500 mA (set by R3)
Power Input Type: USB Type-C & solderable pads
Functions: 1-cell Li-Ion / Li-Polymer battery charger
Protections: Reverse discharge, thermal limit, short circuit
Operating Temperature: –40°C ~ +85°C
Board Dimensions: 20mm × 40mm
Board Pinout
( J1 ) Battery Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | + | Battery positive connection |
| 2 | – | Battery ground connection |
Board Dimensions
Step Files
Datasheet
Microchip MCP73831 Datasheet.pdf
Version History
- V1.0.0 – Initial Release
Support
For technical questions or assistance, please contact support@boardoza.com
License
Shield: 
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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