Powerbeginnerbatterychargingli-ionMCP73832power

Li-Ion Battery Charger (MCP73832)

A compact, single-cell Li-Ion/Li-Po charging circuit based on the Microchip MCP73832. Includes thermal and over-charge protection, status LED, and EU supplier BOM.

This template gives you a production-ready Li-Ion charging front-end you can drop straight into your design. The MCP73832 is a highly integrated linear charge management controller that handles all the complexity of CC/CV charging with configurable current via a single resistor. The included PCB is a 2-layer 25×20 mm footprint suitable for integration into enclosures, handheld devices, and IoT nodes. Thermal pad placement, copper pour, and track widths are optimized for 500 mA charge current with <5°C rise at 25 °C ambient.

€29

One-time purchase · lifetime updates

What's included

KiCad Schematic (.kicad_sch)
Fully annotated with design notes
KiCad PCB Layout (.kicad_pcb)
2-layer, design-rule clean, Gerber-ready
Gerber + drill files
Ready for JLCPCB, PCBWay, and Aisler
BOM (Excel + CSV)
EU suppliers: Mouser, TME, Farnell
Design Notes PDF
Component selection rationale and integration guide
3D STEP model
For enclosure planning and MCAD integration

Don't want to route it yourself?

PCB Composer assembles tiles into a ready-to-order board — no KiCad needed.

Use PCB Composer

Technical Specifications

IC	MCP73832T-2ACI/OT
Input voltage	3.75 V – 6 V (USB compatible)
Charge current	500 mA (R-prog configurable)
Cell chemistry	Li-Ion / Li-Po single cell
PCB size	25 × 20 mm, 2-layer
Status output	Open-drain STAT LED driver

FAQ

What KiCad version do the files use?

All files are saved in KiCad 8.x format. They open in KiCad 7 with a one-time migration dialog.

Can I use the template in a commercial product?

Yes. Once purchased, you receive a perpetual licence to use and modify the design in any number of products, including commercial ones.

Are the BOMs kept up to date?

We review BOMs quarterly and push updates when components are discontinued or better alternatives become available. All updates are free.

What if my fab parameters differ (e.g. 4-layer board)?

The design notes explain which constraints are fab-specific. Upgrading to a 4-layer stack is straightforward and covered in the integration guide.

Related Templates

ESP32-S3 Minimal Circuit

Minimal but complete ESP32-S3 circuit with QSPI flash, auto-download, USB-C with ESD protection, and RF layout best practices. Drop-in ready for IoT and wireless products.

€39

USB-C PD Frontend (FUSB302)

Fully featured USB Power Delivery negotiation front-end using the onsemi FUSB302. Supports up to 20 V/3 A PD contracts, including protection circuit for downstream loads.

€29