Power 8 pins

TP4056

1A Li-Ion battery charger IC. USB input, programmable current, charge status LEDs.

// connector diagram 8 pins

// loading diagram...

// Specifications

Input Voltage

4V – 8V (USB 5V typical)

Charge Current

Up to 1A (programmable)

Charge Voltage

4.2V (Li-Ion)

Protection

Thermal regulation

Status

CHRG and STDBY pins

Package

SOP-8

// Pin Reference Table

Pin	Name	Function	Type
1	TEMP	Battery temperature sense	ADC
2	PROG	Program charge current resistor	ADC
3	GND	Ground	GND
4	VCC	Input supply 4V–8V	PWR
5	BAT	Battery connection	PWR
6	CHRG	Charge status LED, active low	I/O
7	STDBY	Standby status LED, active low	I/O
8	CE	Chip enable, HIGH = enabled	I/O

The TP4056 is a 1A linear Li-Ion battery charger IC with thermal regulation, programmable charge current, and charge status indicators. Widely found on USB LiPo charger modules.