TP4056 Lithium-Ion Battery Charger
A complete linear charger for single cell lithium-ion batteries with USB and wall adapter compatibility.
- Input Supply Voltage: -0.3V to 8V
- Storage Temperature: -10°C to 85°C
- BAT Short-Circuit Duration: Continuous
- BAT Pin Current: 1200mA
- PROG Pin Current: 1200uA
- Maximum Junction Temperature: 145°C
- Operating Ambient Temperature Range: -40°C to 85°C
- Lead Temp.(Soldering, 10sec): 260°C
Top Features:
- Programmable charge current up to 1000mA
- No MOSFET, sense resistor, or blocking diode required
- Charges single cell Li-Ion batteries from USB port
- Automatic recharge and C/10 charge termination
The TP4056 is a complete constant-current/constant-voltage linear charger designed for single cell lithium-ion batteries. It comes in an SOP package with low external component requirements, making it perfect for portable applications. The internal PMOSFET architecture eliminates the need for a blocking diode, and the thermal feedback system regulates the charge current to prevent overheating.
The charge voltage is preset at 4.2V with 1.5% accuracy, and the charge current can be externally programmed using a single resistor. The TP4056 also features a current monitor, under voltage lockout, automatic recharge functionality, and two status pins to indicate charge termination and input voltage presence.
Applications for the TP4056 include cellular telephones, PDAs, GPS devices, charging docks, digital cameras, portable electronics, and USB bus-powered chargers.
*Images are for illustration only; actual product may vary.
?