ST750A

Specifications




Description

The ST750A is an adjustable output CMOS,step-down switching regulator. The ST750A accepts inputs between 4V and 11V and delivers 450mA. Typical efficiencies are 85% to 96%.
Quiescent supply current is 0.8mA and only 0.3µA in shutdown mode. The ST750A output does not exhibit frequency over this specified range. Pulse-width modulation (PWM) current-mode control providesprecise output regulation and excellent transient responses. Output voltage accuracy is guaranteed to be ±4.5% plus feedback resistor tolerance over line, load, and temperature varations.
Fixed-frequency switching and absence of subharmonic ruipple allows easy filtering of output ripple and noise, as well as the use of small external components. This ST750A regulators require only a single inductor value to work in most appli-cations, so no inductor design is necessary.Typical applications are: Cellular phones & radios,portable Instruments, Portable Communications Equipments and Computer Peripherals.