This compact charging module integrates the TP4057 linear Li-ion charger with the LM66200 dual ideal diode for advanced power control.

It is designed for single-cell lithium-ion batteries and provides a fixed 500mA charging current for consistent and safe charging.

The TP4057 operates in constant current/constant voltage mode, terminating charge automatically when current drops to 1/10 of the set value.

Trickle charging below 2.9V and automatic recharge functionality help extend battery life.
An internal thermal feedback mechanism reduces charging current when chip temperature exceeds safe limits.

The module features dual-color LED indicators: red for charging and green for full charge status.

The LM66200 handles two input power sources (e.g., USB and battery) with automatic switchover to the higher voltage.

It uses low RDS(on) N-channel MOSFETs for efficient switching with minimal voltage drop.
Reverse current blocking and soft-start features protect both battery and connected circuitry.

It supports up to 1A per channel, ensuring robust power path management for demanding loads.
Ultra-low quiescent current (as low as 1.3μA) and standby current (50nA) minimize battery drain.

The module enters sleep mode when input is disconnected, reducing battery leakage current below 1μA.

It includes fault handling, shutdown mode, and status output for host monitoring.
Compact dimensions of 10mm × 27.2mm × 1mm make it perfect for slim and space-constrained designs.

Ideal for wearables, IoT devices, handheld electronics, and other battery-powered embedded systems.

The module need a 2-pin JST 1.0mm connector for battery connection and a 3-pins JST 1.0mm connector for input/output wiring.