TP4351B Datasheet – 1A Mobile Power Solution IC – TPOWER

Part Number: TP4351B

Function: Synchronous Single-chip Solution Designed for Mobile Power Supply

Package: SOP 16 Pin

Manufacturer: Shenzhen TPOWER Semiconductor




The TP4351B is a synchronous single-chip solution designed for mobile power supply. It integrates a linear charge management module, a synchronous discharge management module, a power detection and LED indication module and a protection module.

TP4351B built-in charge and discharge power MOS, charge current can be set, the maximum charge current of 1A, synchronous boost 1A output current. TP4351B internal integrated temperature compensation, over-temperature protection, overcharge and over-discharge protection, output over-voltage protection, output overload protection, output short-circuit protection and other security features to ensure that the chip and lithium-ion battery security, application circuit is simple, The charge management and discharge management can be achieved with only a few components.




1. Discharge output: 5V / 1A
2. Charging current: maximum 1A
3. Efficiency: 91% (input 3.7V, output 5V / 1A)
4. BAT Discharge termination voltage: 2.9V
5. Optional 4.2V / 4.35V charging voltage
6. Maximum 25uA standby current
7. Intelligent temperature control and over-temperature protection
8. Integrated output over-voltage protection, short circuit protection, overload protection
9. Integrated over-charge and over-discharge protection
10. Support trickle mode and zero voltage charging
11. Support flashlight function, the maximum output of 100mA


TP4351B Datasheet


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