TP4056-42-SOP8-PP

The TP4056-42-SOP8-PP from Top Power ASIC is a complete constant-current/constant-voltage linear charger designed for single-cell lithium-ion batteries. Its compact SOP-8 package and minimal external component requirements make it suitable for portable applications. This IC can operate from USB ports or wall adapters, eliminating the need for a blocking diode due to its internal PMOSFET architecture.

The charger features thermal feedback to regulate charge current and limit die temperature during high power operation or high ambient temperatures. The charge voltage is preset at 4.2V, with the charge current being externally programmable via a single resistor, up to 1000mA. The charging cycle automatically terminates when the charge current drops to 1/10th of the programmed value after the final float voltage is reached. Additional features include current monitoring, undervoltage lockout, and automatic recharge functionality, with two status pins indicating charge termination and input voltage presence.

This battery charger IC operates within an ambient temperature range of -40°C to 85°C and has a maximum junction temperature of 145°C. The input supply voltage range is -0.3V to 8V. The TP4056-42-SOP8-PP is ideal for applications requiring efficient and reliable charging of single-cell Li-ion batteries.