TP4056.pdf (59.5 KB)

The TP4056 is a linear charger for single-cell lithium-ion batteries, featuring constant-current/constant-voltage charging, thermal regulation, and automatic recharge. It has a programmable charge current up to 1000mA, preset 4.2V charge voltage, and two status output pins. The device is available in an 8-lead SOP package and operates within a temperature range of -40°C to 85°C. Key features include:

Programmable charge current up to 1000mA
No external MOSFET, sense resistor, or blocking diode required
Complete linear charger in SOP-8 package for single-cell lithium-ion batteries
Constant-current/constant-voltage charging
Charges single-cell Li-ion batteries directly from USB port
Preset 4.2V charge voltage with 1.5% accuracy
Automatic recharge
Two charge status output pins
C/10 charge termination
2.9V trickle charge threshold

The device has various applications, including cellular telephones, PDAs, GPS, charging docks, digital still cameras, and portable devices. The typical application circuit shows the connection of the TP4056 with a battery, USB port, and status LEDs. The device's electrical characteristics, such as input supply voltage, input supply current, and regulated output voltage, are also specified.