The MAX8625AETD+T is a high efficiency, seamless transition, step-up/down DC to DC converter in 14 pin TDFN package. This glitch free, smooth step-up/down transition H-bridge converter is intended to power digital logic, hard disk drives, motors and other loads in battery powered devices. The MAX8625A provides either a fixed 3.3V or adjustable output voltage (1.25V to 4V) at up to 0.8A output current from 2.5V to 5.5V input. Maxim's H-bridge topology provides a seamless transition through all operating modes without glitches commonly seen with other devices. Four internal MOSFETs (two switches and two synchronous rectifiers) with internal compensation minimize external components. A active-low SKIP input selects low noise, fixed frequency PWM mode or high efficiency skip mode where the converter automatically switches to PFM mode under light loads for best light load efficiency. The MAX8625A also has True Shutdown which disconnects output from input when the IC is disabled.
Internal oscillator operates at 1MHz to allow for a small external inductor and capacitors
Operating temperature range from -40°C to 85°C
Current limit circuitry shuts down the IC in event of an output overload
Minimal output ripple variation on transitions
Up to 92% efficiency and 2A peak current limit
Quiescent current of 37μA in skip mode
1μA logic controlled shutdown
Oscillator frequency of 1MHz
Output overload and thermal overload protection
Soft-start circuitry reduces inrush current during start-up
(EN)
