19-1006; Rev 0; 3/08
High-Efficiency, Seamless Transition, Step-Up/Down DC-DC Converter
General Description
The MAX8625A PWM step-up/down
regulator is intended to power digital logic, hard disk drives, motors, and other loads in portable, battery-powered devices such as PDAs, cell phones, digital still cameras (DSCs), and MP3 players.
The MAX8625A provides either a fixed 3.
3V or adjustable output voltage (1.
25V to 4V) at up to 0.
8A from a 2.
5V to 5.
5V input.
The MAX8625A utilizes a 2A peak current limit.
Maxim’s proprietary H-bridge topology* provides a seamless transition through all operating modes without the glitches commonly seen with other devices.
Four internal MOSFETs (two switches ...