CN
Charger Pump
NU2402
NU2402 is a 98.0% efficient, 12-A battery charging solution using a switched cap architecture. This architecture and the integrated FETs are optimized to enable a 50% duty cycle, allowing the cable current to be 1/4 the current delivered to the battery, reducing the losses over the charging cable as well as limiting the temperature rise in the application. The dual-phase architecture reduces the input cap requirements as well as reducing the output voltage ripple.
Key Spec
Features

• High Efficiency based on Low Voltage Flying Caps(10V)

• Switched Cap Architecture Optimized for 50% Duty Cycle

- Input Voltage is 4x Battery Voltage (2.7V to 5.0V)

- Output Current is 4x of Input Current (Up to 4.0A)

- Reduces Power Loss Across the Cable

• Support charge pump 4:1/3:1/2:1/1:1 mode 

• Support reverse 1:4/1:3/1:2/1:1 mode

• Single Input Power Path Management 

- Input Over-Voltage with External OVP FET(VAC & OVPGATE)

• Support Master and Slave Operation

• Integrated Programmable Protection Features for Safe Operation

- Input Over-Voltage Protection (BUS_OVP)

- Input Over-Current Protection (BUS_OCP) Input Under-Current Protection (BUS_UCP)

- Battery Over-Voltage Protection (BAT_OVP)

- Output Over-Voltage Protection(VOUT_OVP)

- Complete short-circuit Protection: VAC,VBUS,PMID,VOUT,C1/2PA/B to GND;CFLY short; BST Cap short; LDO(REGN) Cap short; Fets short;

• Programmable Settings for System Optimization 

- IBUSREG, VBATREG and IBATREG Regulation integrated.

- STAT, FLAG, and MASK options for Interrupts 

- ADC Readings and Configuration

• Integrated 15-Bit Analog-to-Digital Converter (ADC) 

- ±1% BUS Voltage 

- ±5% BUS current at 4.5A (-20°C to 85°C)

- ±1% VOUT Voltage

- ±0.5% BAT voltage with Differential Sensing at VBAT=4.44V(0°C to 85°C)

Applications

• Smart Phone

• Tablet PC

Datasheet Download
NU2402

2025 / 08 / 22