General Description
The RT8078A is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range from 2.7V to 5.5V that provides an adjustable regulated output voltage from 0.6V to VIN 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 switching frequency is fixed internally at 1MHz. The 100% duty cycle provides low dropout operation, hence extending battery life in portable systems.

Features
• High Efficiency : Up to 95%
• Fixed Frequency : 1MHz
• No Schottky Diode Required
• Internal Compensation
• 0.6V Reference Allows Low Output Voltage
• PWM Mode Operation
• Low Dropout Operation : 100% Duty Cycle
• OCP, UVP, OVP, OTP
• RoHS Compliant and Halogen Free

Applications
• Portable Instruments
• Battery Powered Equipment
• Notebook Computers
• Distributed Power Systems
• IP Phones
• Digital Cameras