ST ST763A series 3.3V Step down Current Mode PWM DC-DC Converters

ST763A series

3.3V Step down current mode PWM DC-DC converters

Features Output voltage 3.3V Supply voltage range from 3.3V to 11V Guaranteed output current: 500m A Typical operation frequency: 200KHz Very low quiescent current: 0.6m A on mode

0.2µA OFF MODE Switch ON/OFF control Typical efficiency: 90%

variations. A minimum number of external Operating temperature range: -40°C to 85°C components is used and the fixed frequency switching allows easy filtering of output ripple and

Available in SO-8 package

noise. Description Other features of this device are cycle-by-cycle current limiting, overcurrent limiting, under voltage

The ST763A is a step-down switching regulator. It lockout and programmable soft-start protection. operates from 3.3V to 11V giving a fixed 3.3V

A 22µH inductor works in most applications, so no

output voltage, delivering up to 500m A. The

sophisticated design is necessary.

mainly features are typical efficiency of 90%, quiescent current of 0.6m A, and only 0.2µA in Package available is SO-8. shut-down.

Typical application are in 5V to 3.3V converters,

The PWM current mode control provides precise cellular phones, portable instruments, hand-held output regulation and very good transient computers, and peripherals. response. Output voltage accuracy is guaranteed to be ±5% over line, load and temperature

Order code

Part number Packaging

ST763AC ST763ACDTR

May 2007 Rev. 3 1/14

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