General Description 

The RT8070 is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.7V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 4A of output current. The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The default switching frequency is set at 2MHz, if the RT pin is left open. It can also be varied from 200kHz to 2MHz by adding an external resistor. Current mode operation with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

Features

 High Efficiency : Up to 95%

 Adjustable Frequency : 200kHz to 2MHz

 No Schottky Diode Required

 0.8V Reference Allows Low Output Voltage

 Low Dropout Operation : 100% Duty Cycle

 Enable Function

 External Soft-Start

 Power Good Function

 RoHS Compliant and Halogen Free

Applications

 LCD TV and Monitor

 Notebook Computers

 Distributed Power Systems

 IP Phones

 Digital Cameras