INJOINIC IP2332

IP2332 is a 5V input, single-cell lithium battery synchronous buck charging management IC. With integrated power MOSFETs and a synchronous switching architecture, it requires minimal external components, effectively reducing overall solution size and BOM cost. The buck switching charger operates at 500KHz with a maximum charging current of 2.4A; at 5V input with 3.7V/2A, conversion efficiency reaches 92%. Charging current is configurable via external resistors. With 5V input, the IC intelligently adjusts charging current to prevent adapter overload. Supports dual-LED display; LED1 features constant-current output (no series current-limiting resistor required), with optional breathing light function. Supports NTC functionality with 5-stage NTC charging standard — charging stops at low or high NTC temperatures, while charging current or termination voltage can be reduced at mid-low or mid-high temperatures. Available in ESOP8 package.

• Synchronous step-down switching charger, integrated power MOS, max 2.4A switching charge current, 92% efficiency
• Standard 4.20V, other voltages available via customization, supports LiFePO₄ batteries, customizable full-charge voltage range 3.5V ~ 4.4V
• Charge current adjustable via ISET pin
• NTC protection support
• Dual LED support
• LED1 constant current output (no series current-limiting resistor required)
• Low standby power consumption, BAT current < 2uA when VIN = 0
• Multiple protections for high reliability: input OVP/UVP, output overcharge protection, NTC battery temperature monitoring, 5-stage charging (JEITA compliant), chip over-temperature protection, ESD 4KV

• Single-cell lithium battery charging