General Description
The MAX1572 is a fixed-frequency, synchronous stepdown DC-to-DC converter to power low-voltage microprocessor/DSP cores in portable equipment requiring high efficiency in a limited PC board area. The features are optimized for high efficiency over a wide load range, small external component size, low output ripple, and excellent transient response.

Features
♦ Up to 97% Efficiency
♦ 2MHz PWM Switching
♦ 800mA Guaranteed Output Current
♦ Low 48µA Quiescent Current
♦ Power-Saving Modes: Pulse-Group, Pulse-Skip,
   Forced-PWM Mode
♦ 0.75V to 2.5V Preset Output Range
   (in 50mV Increments)
♦ Voltage-Positioning Load Transients
♦ 5mVP-P Output Ripple
♦ Tiny 2.2µH Inductor
♦ 10µF Ceramic Output Capacitor
♦ Low 0.1µA Shutdown Current
♦ No External Schottky Diode Required
♦ Soft-Start with Zero Inrush Current
♦ 170ms (min) RESET Output
♦ Small 12-Pin, 4mm x 4mm Thin QFN Package

Applications
   Cell Phones and Smart Phones
   PDAs, Palmtops, and Notebook Computers
   MP3 and DVD Players
   Digital Cameras and Camcorders
   PCMCIA Cards
   Hand-Held Instruments