ACST28S Просмотр технического описания (PDF) - STMicroelectronics

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ACST28S

AC Switch family Alternating current switch

STMicroelectronics 

ACST2 Series

AC Switch family

Alternating current switch

Main features

OUT

Symbol

Value

Unit

IT(RMS)

2

A

VDRM/VRRM

800

V

IGT

10

mA

■ Overvoltage crowbar technology

■ High noise immunity: static dV/dt > 500 V/µs

The ACST2-8SFP in the TO-220FPAB package

provides insulation voltage rated at 1500VRMS

Main application

■ AC ON/OFF static switching in appliances &

industrial control systems

■ Drive of low power highly resistive or inductive

loads like:

– solenoid,

– pump, fan, micro-motor

Description

The ACST2 series belongs to the AC power

switch family built around the ASD technology.

This high performance device is adapted to home

appliances or industrial systems and drives loads

up to 2 A.

This ACST2 switch embeds a Triac structure with

a high voltage clamping device to absorb the

inductive turn-off energy and withstand line

transients such as those described in the

IEC 61000-4-5 standards. The component needs

a low gate current to be activated (IGT < 10 mA)

and in the mean time provides a high electrical

noise immunity such as those described in the

IEC 61000-4-4 standards.

G

COM

G

OUT

COM

TO-220FPAB

ACST2-8SFP

DPAK

ACST2-8SB

Benefits

■ Enables equipment to meet IEC 61000-4-5

■ High off-state reliability with planar technology

■ Needs no external overvoltage protection

■ Reduces component count

■ Interfaces directly with the micro-controller

■ High immunity against fast transients

described in IEC 61000-4-4 standards

Order code

Part number

ACST2-8SFP

ACST2-8SB

Marking

ACST28S

ACST28S

Functional diagram

OUT

G

COM

March 2007

Rev 1

1/11

www.st.com

11

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