IP2342_3S

This product is an asynchronous boost charge management IC supporting 2~3 series lithium-ion or LiFePO₄ battery packs. It adopts an asynchronous switching architecture, requiring minimal external components in application, effectively reducing overall solution size and BOM cost. The boost switching charge converter operates at 500KHz, achieving 84% conversion efficiency under 5V/2A input and 8V output conditions. The IC features input undervoltage protection and intelligent charging current adjustment to adapt to adapter load capability, preventing adapter overload. It supports constant-voltage charging voltage setting via an external resistor on the VSET pin, and input constant-current charging current setting via an external resistor on the ISET pin. Additionally, it supports NTC functionality to suspend charging under low or high temperature conditions. The IC is available in an ESOP8 package.

Applications

• Charging for 2~3 series lithium or LiFePO₄ battery packs

Key features

• Integrated power MOSFET
• 5V input asynchronous boost charging
• Supports 2~3 series Li-ion or LiFePO₄ batteries
• Constant voltage charging voltage adjustable via external resistor
• Input constant current charging, adjustable via external resistor
• Maximum input charging current: 2A
• Boost charging efficiency: 84%
• Automatic input current regulation, adaptive to adapter load
• LED charge status indication, single-pin dual-LED support
• Input undervoltage and overvoltage protection
• 0V battery trickle charging support
• NTC protection
• IC overtemperature protection
• ESD 4KV protection