Product Summary

The TP4056 is a complete constant-current/constant-voltage linear charger for single cell <br />
lithium-ion batteries. Its SOP package and low external component count make the TP4056 <br />
ideally suited for portable applications. Furthermore, the TP4056 can work within USB and wall <br />
adapter. <br />
No blocking diode is required due to the internal PMOSFET architecture and have prevent to <br />
negative Charge Current Circuit. Thermal feedback regulates the charge current to limit the die <br />
temperature during high power operation or high ambient temperature. The charge voltage is <br />
fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The <br />
TP4056 automatically terminates the charge cycle when the charge current drops to 1/10th the <br />
programmed value after the final float voltage is reached. <br />
TP4056 Other features include current monitor, under voltage lockout, automatic recharge and <br />
two status pin to indicate charge termination and the presence of an input voltage.