DESCRIPTION
The ST763A is a step-down switching regulator . It operates from 3.3V to 11V giving a fixed 3.3V output voltage, delivering up to 500mA. The mainly features are typical efficiency of 90%, quiescent current of 0.6mA, and only 0.2µA in shut-down.
The PWM current mode control provides precise output regulation and very good transient response. Output voltage accuracy is guaranteed to be ±5% over line, load and temperature variations. A minimum number of external components is used and the fixed frequency switching allows easy filtering of output ripple and noise.

■ OUTPUT VOLTAGE 3.3V
■ SUPPLY VOLTAGE RANGE FROM 3.3V TO 11V
■ GUARANTEED OUTPUT CURRENT: 500mA
■ TYPICAL OPERATION FREQUENCY: 200KHz
■ VERY LOW QUIESCENT CURRENT: 0.6mA ON MODE 0.2µA OFF MODE
■ SWITCH ON/OFF CONTROL
■ TYPICAL EFFICENCY: 90%
■ OPERATING TEMPERATURE RANGE: -40°C TO 85°C
■ AVAILABLE IN SO-8 AND DIP-8 PACKAGES