描述 Description

The NU2119 is a 98.0% efficient, 6-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 half 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.

特性 Features

? 98.0% Efficient at 2:1 charge mode, 99.1% Efficient at 1:1 charge mode
? Switched Cap Architecture Optimized for 50% Duty Cycle.
- Input Voltage is 2x Battery Voltage (3.5 V to 4.65v)
- Output Current is 2x of Input Current (Up to 3.5 A)
- Reduces Power Loss Across the Cable
? Support charge pump 2:1 and 1:1 charge mode
? Integrated Programmable Protection Features for Safe Operation
- Input Over-Voltage Protection (BUS_OVP)
- Input Over-Current Protection (BUS_OCP)
- Input Over-Voltage with External OVP FET
- Battery Over-Voltage Protection (BAT_OVP)
- Output Over-Voltage (VOUT_OVP)
- IBAT Over-Current Protection (BAT_OCP)
? Programmable Settings for System Optimization
- IBUSREG, VBATERG and IBATERG Regulation integrated
- STAT, FLAG, and MASK options for Interrupts
- ADC Readings and Configuration
? Integrated 15-Bit Analog-to-Digital Converter (ADC)
- ±1% BUS Voltage
- ±3% BUS current at 3A (0℃ to 85℃)
- ±1% VOUT Voltage
- ±0.25% BAT voltage with Differential Sensing
- ±2.5% BAT Current at 6 A with External RSENSE =2mΩ(0℃ to 85℃)
- ±4℃ Die Temperature

應用 Application

? Smart Phone
? Table PC