ST763AC中文资料3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS数据手册ST规格书

描述 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.
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.

特性 Features

Typical efficiency: 90%
Switch ON/OFF control
Available in SO-8 package
Output voltage 3.3V
Guaranteed output current: 500mA
Supply voltage range from 3.3V to 11V
Very low quiescent current: 0.6mA on mode 0.2µA OFF MODE
Operating temperature range: -40°C to85°C
Typical operation frequency: 200KHz

简介

ST763AC属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的ST763AC稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。