General Description

The RT8032 is a synchronous, step-down DC/DC converter with input current limit function. The average input current limit can be programmed by an external resistor. Its input voltage range is from 3V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 1.2A of output current. The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. Current mode operation with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

Features

• Programmable Average Input Current Limit

• 3V to 5.5V Input Range

• 1.2A Output Current

• Up to 95 Efficiency

• 1.2MHz Switching Frequency

• No Schottky Diode Required

• Force Continues Mode Operation

• Low RDS(ON) Internal Switches : 230mΩ

• Small 12-Lead WDFN Package

• External Compensation for Optimal Transient Response

• External Soft-Start

• Input Over Voltage Protection

• RoHS Compliant and Halogen Free

Applications

• Distributed Power Systems

• Battery Charger

• DSL Modems

• Pre-Regulator for Linear Regulators

• 3G/3.5G Data Card