TP4054 Datasheet – Li-lon Battery Charger IC ( PDF )

This IC is Battery Charger.

Part Number: TP4054

Marking : 54b

Function: Linear Li-lon Battery Charger with Thermal Regulation in SOT

Package: SOT23-5 Type

Manufacturer: NanJing Top Power


TP4054 datasheet circuit


The TP4054 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its SOT package and low external component count make the TP4054 ideally suited for portable applications. Furthermore, the TP4054 can work within USB and wall adapter. No external sense resistor is needed, and no blocking diode is required due to the internal PMOSFET architecture and have prevent to negative Charge Current Circuit. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature.


TP4054 pinout data


1. Programmable Charge Current Up to 800mA
2. No MOSFET, Sense Resistor or Blocking Diode Required
3. Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating
4. Charges Single Cell Li-Ion Batteries Directly from USB Port



1. Cellular Telephones, PDAs, MP3 Players
2. Charging Docks and Cradles
3. Blue tooth Applications

Other data sheets are available within the file: TP-4054


TP4054 Datasheet PDF

TP4054 pdf