This post explains for the semiconductor TP4351B.
The Part Number is TP4351B.
The function of this semiconductor is 1A synchronous mobile power scheme.
Preview images :
TP4351B is a single-chip synchronous boost solution specially designed for mobile power, which integrates a linear charging management module, a synchronous discharging management module, a power detection and LED indication module, and a protection module.
TP4351B has built-in charging and discharging power MOS, the charging current can be set, the maximum charging current is 1A, and the synchronous boost supports 1A output current.
TP4351B integrates multiple safety protection functions such as temperature compensation, over-temperature protection, overcharge and over-discharge protection, output overvoltage protection, output overload protection, and output short-circuit protection to ensure the safety of the chip and lithium-ion battery. The application circuit is simple, Charge management and discharge management can be implemented with few components.
. Discharge output: 5V/1A
. Charging current: 1A max
. Efficiency: 91% (Input 3.7V, Output 5V/1A)
. BAT discharge termination voltage: 2.9V
. Selectable 4.2V/4.35V Charge Voltage
. 25uA Maximum Standby Current
. Intelligent temperature control and over-temperature protection
. Integrated output overvoltage protection, short circuit protection, overload protection
. Integrated overcharge and overdischarge protection
. Support trickle mode and zero voltage charging
. Support flashlight function, maximum output 100mA