19-1811; Rev 1; 8/01
KIT ATION EVALU E L B A IL AVA
Dual-Output Step-Down DC-DC Converter for PDA/Palmtop Computers
General Description Features
o Dual, High-Efficiency, Synchronous Rectified Step-Down Converter o Main Power Adjustable from +1.
25V to +5.
5V Over 2A Load Current Up to 95% Efficiency o Core Power Adjustable from 1V to 5V Internal Switches Up to 1.
5A Load Current Up to 92% Efficiency o 100% (max) Duty Cycle o Up to 1.
25MHz Switching Frequency o Input
Voltage Range from +2.
7V to +28V o 170µA Quiescent Current o 5µA Shutdown Current o Digital Soft-Start o Independent Shutdown Inputs
MAX1775
The MAX1775 is a dual, step-down DC-DC converter that generates both the main (+3.
3V at...