What Is the TP4056? Li-ion/LiPo Charger Module and Uses
The TP4056 is a single-cell Li-ion/LiPo battery charger IC. It charges CC/CV up to 4.2 V (~1 A via Rprog), with common micro-USB/USB-C modules. WATCH OUT: alone it only charges and provides no over-discharge/short-circuit protection — choose a DW01A + FS8205 protected module.
The TP4056 is a single-cell Li-ion/LiPo battery charger IC. It charges with constant-current/constant-voltage (CC/CV) up to 4.2 V and its ready modules (micro-USB/USB-C) are very common. For the concept, see voltage regulation / power management.
What is the TP4056 used for?
Safely charging a single-cell 3.7 V lithium battery from USB: portable devices, IoT nodes, hobby projects. The charge current is set with an Rprog resistor (typically 1 A); there are charge and full (standby) LED indicators.
Watch out: protection circuit
The TP4056 alone only charges; it does not provide over-discharge/short-circuit protection. So choose a module with a protection chip (DW01A + FS8205) — it protects the battery from deep discharge and short circuit. A TP4056-only module is risky in devices that drain the battery without a protection circuit.
Specifications
| Parameter | Value |
|---|---|
| Type | Single-cell Li-ion/LiPo linear charger |
| Charge voltage | 4.2 V (CC/CV) |
| Current | up to ~1 A via Rprog |
| Input | ~4.5–5.5 V (USB) |
Equivalents
- TP4057: a close relative.
- MCP73831: an alternative Li charger IC.
- IP5306: charge + boost + gauge (power bank).
Find it in our catalog
Use the TP4056 search.