The TP5100X is a switching buck-type dual-cell 8.4V lithium battery charging management IC. It's ESOP8 package and minimal peripheral circuitry make the TP5100X highly suitable for high-current charging management in portable devices. The chip integrates comprehensive protection features including input over-current protection, undervoltage lockout, overvoltage protection, thermal shutdown, short-circuit protection, and battery temperature monitoring.

Operating with a 5V-12V input voltage range, the TP5100X employs a three-stage charging process (trickle pre-charge, constant current, and constant voltage). Both trickle pre-charge current and constant-current charging current are adjustable via external resistors, supporting a maximum constant charging current of 2A. With optimized peripheral component requirements, the TP5100X maintains low thermal dissipation even during high-current charging. The built-in power PMOSFET and reverse-blocking circuit eliminate the need for external protection components such as anti-backflow Schottky diodes.

▶ Dual-cell 8.4V Lithium Battery Charging
▶ Built-in Power MOSFET with Switching Mode
Reduces component heat generation and simplifies peripheral circuitry
▶ Programmable Charging Current (0.1A–2A)
Adjustable via external resistors
▶ Dual-LED Charging Status Indication
▶ Integrated Protections: 
    Overtemperature, 
    Overcurrent, 
    Overvoltage, Undervoltage.
▶ Battery Protection Features:
    Temperature monitoring, 
    Short-circuit protection.
▶ Switching Frequency: 200KHz
▶ High Voltage Regulation Accuracy
Charging voltage control precision <1%
▶ Three-Stage Charging (Trickle/CC/CV)