ST763AC 3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS

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.

Other features of this device are cycle-by-cycle current limiting, overcurrent limiting, under voltage lockout and programmable soft-start protection.

A 22µH inductor works in most applications, so no sophisticated design is necessary.

Package available is SO-8.

Typical application are in 5V to 3.3V converters, cellular phones, portable instruments, hand-held computers, and peripherals

技术特性

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 efficiency: 90%
Operating temperature range: -40°C to 85°C
Available in SO-8 package

应用原理图

ST763AC 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
ST763ACDTR	Active		1000	SO-8	Tape And Reel		ST763ACDTR

DATASHEET

描述	版本	大小
ST763AC : 3.3V Step down current mode PWM DC-DC converters	3	264KB