TP4100/TP4101/TP4102 is a chip that it has complete single-cell lithium-ion battery charging management and discharging protection. It is the first 5V power supply positive and negative reverse connection protection, with battery positive and negative reverse connection protection, compatible with the size of 3mA-1000mA charging current. It features constant current/constant voltage linear control, and the thin DFN and TSOT packages with fewer external components make it ideal for portable applications.

The chip is equipped with a power supply voltage power adaptive function that can be powered directly from USB or solar power. Thermal feedback automatically adjusts the charge current to limit chip temperature during high power operation or high ambient temperature conditions. The full voltage is fixed at 4.2V, and the charging current can be externally set by a resistor. When the battery reaches 4.2V, the charging current drops to 1/10 of the set value, and the TP4100 will automatically terminate charging.

 - 5V power supply reverse connection protection;

 - Compatible with programmable charge currents from 3mA to 1000mA;

 - Lithium battery reverse polarity protection;

 - turbulent flow - constant current - constant voltage three-stage charging;

 - Charging mode power supply adaptive;

 - 4.2V preset charging voltage with an accuracy of ±1%;

 - The maximum input can reach 8V;

 - 20% constant current pre-charging;

 - C/10 charging is terminated;

 - The power supply current in charging standby mode is 80uA,

 - BAT standby current 4uA in discharge mode;

 - Battery 2.6V undervoltage protection shutdown, charging self-recovery;

 - Overcharge protection, output short circuit protection, output overcurrent protection;

 - After protection, self-recovery after 8 seconds;