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General Description

The RT8061A 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 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 fixed internally at 1MHz. The 100 duty cycle provides low dropout operation, hence extending battery life in portable systems. Current mode operation with internal compensation allows the transient response to be optimized over a wide range of loads and output capacitors. The RT8061A is operated in PWM/PSM mode to achieve high efficiency for a wide load range. The RT8061A is available in a WDFN-10L 3x3 package.

Features

? High Efficiency : Up to 95

? Low RDS(ON) Internal Switches : 69mΩ/49mΩ at VIN = 5V

? Fixed Frequency : 1MHz

? No Schottky Diode Required

? 0.6V Reference Allows Low Output Voltage

? PWM/PSM 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