MAX748A Datasheet (Maxim) - 3.3V / Step-Down / Current-Mode PWM DC-DC Converters

MAX748A, 3.3V / Step-Down / Current-Mode PWM DC-DC Converters

The MAX748A/MAX763A are 3.3V-output CMOS, stepdown switching regulators.

The MAX748A accepts inputs from 3.3V to 16V and delivers up to 500mA.

The MAX763A accepts inputs between 3.3V and 11V and delivers up to 500mA.

Typical efficiencies are 85% to 90%.

Quiescent supply current is 1.4mA (MAX763A), a

MAX748A Features

* o Up to 500mA Load Currents o Guaranteed 159kHz to 219.5kHz Current-Mode PWM o 85% to 90% Efficiencies o 1.7mA Quiescent Current (MAX748A) 1.4mA Quiescent Current (MAX763A) o 0.2µA Shutdown Supply Current o 22µH Preselected Inductor Value; No Component Design Required o Overcurrent, Soft-Start, and