GENERAL DESCRIPTION
The ADP3051 is a low noise, current mode, pulse width modulator (PWM) step-down converter capable of supplying over 500 mA to output voltages as low as 0.8 V. This device integrates a low resistance power switch and synchronous rectifier, providing excellent efficiency over the entire output voltage range and eliminating the need for a large and costly external Schottky rectifier. Its 550 kHz switching frequency permits the use of small external components.

FEATURES
    Current mode control for simple loop compensation
    Input voltage range: 2.7 V to 5.5 V
    Output voltage range: 0.8 V to 5.5 V
    Tri-Mode™ operation for high efficiency
    550 kHz PWM operating frequency
    High accuracy over line, load, and temperature
    Micropower shutdown mode
    Space-saving MSOP-8 package

APPLICATIONS
    Li-ion powered handhelds
    MP3 players
    PDAs and palmtops
    Consumer electronics