General Description
The RT8058A is a current mode PWM step-down converter. The chip is ideal for fixed frequency and low ripple applications over full range of load conditions. Its input voltage range is from 2.6V to 5.5V with a constant 1.2MHz switching frequency that allows it to adopt tiny, low cost capacitors and inductors with 2mm or less in height making it ideal for single-cell Li-lon/polymer battery applications.

Features
● 0.6V Reference Allows Low Output Voltage
● Low Dropout Operation : 100% Duty Cycle
● 2A Load Current
● <2μA Shutdown Current
● Up to 95% Efficiency
● No Schottky Diode Required
● 1.2MHz Constant Switching Frequency
● Low RDS(ON) Internal Switches
● Internally Compensated
● Internal Soft-Start
● Over temperature Protection
● Short Circuit Protection
● Small 10-Lead WDFN Package
● RoHS Compliant and Halogen Free

Applications
● Portable Instruments
● Microprocessors and DSP Core supplies
● Cellular Telephones
● Wireless and DSL Modems
● Digital Cameras
● PC Cards