The TP4056H is a 1A linear charger for single-cell lithium-ion batteries, featuring 30V input voltage tolerance, power supply OVP,  and battery reverse-polarity protection. 

It offers three selectable full-charge voltages: 4.35V, 4.2V and 3.7V. The charging current can be externally set by a resistor. The TP4056H automatically terminates the charging cycle when the charging current drops to 1/10 of the preset value after reaching the final float voltage.

When the input voltage (AC adapter, USB supply or solar panel) is removed, the device automatically enters a low-current state, reducing battery leakage current to below 1μA. The TP4056H can also enter shutdown mode while connected to a power source, reducing supply current to 85μA. Other features include power supply adaptation, battery temperature detection, under-voltage lockout and automatic recharge.

Features

• Input supply port withstands voltage up to 30V

• OVP activates at input supply voltage of 6.3V

• Li-ion battery reverse-polarity protection

• Power supply adaptation

• Programmable charging current up to 1000mA

• Constant-current / constant-voltage operation with
     thermal regulation for maximum charging rate

• Preset charging voltage with ±1% accuracy

• Charging current monitor output for battery capacity detection

• Automatic recharge

• Dual charge status outputs; no-battery &
     fault status indication

• C/10 charge termination

• Trickle current: C/5

• Battery leakage current < 1μA when no power input

• Trickle charge at 2.9V

• Soft-start limits inrush current

• Battery temperature monitoring

• Available in 8-pin ESOP / DFN3×3 package