General Description
The RT8055B is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.6V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 3A of output current. The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The switching frequency is set by an external resistor. The 100% duty cycle provides low dropout operation extending battery life in portable systems. 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%
Low RDS(ON) Internal Switches : 100mΩ
Programmable Frequency : 300kHz to 2MHz
No Schottky Diode Required
0.8V Reference Voltage Allows for Low Output Voltage
Forced Continuous Mode Operation
100% Duty Cycle Operation
Input Over Voltage Protection
Power Good Output Voltage Indicutor
RoHS Compliant and Halogen Free

APPLICATIONs
Portable Instruments
Battery-Powered Equipment
Notebook Computers
Distributed Power Systems
IP Phones
Digital Cameras
3G/3.5G Data Card