This is information on a product in full production.

October 2013

DocID6518 Rev 5

1/13

ACS108

Overvoltage protected AC switch (ACS™)

Datasheet

Features

 Enables equipment to meet IEC 61000-4-5

surge with overvoltage crowbar technology

 High noise immunity against static dV/dt and

IEC 61000-4-4 burst

 Needs no external protection snubber or

varistor

 Reduces component count by up to 80% and

Interfaces directly with the micro-controller

 Common package tab connection supports

connection of several alternating current

switches on the same cooling pad

 V

crowbar action

Applications

 Alternating current on/off static switching in

appliances and industrial control systems

 Driving low power high inductive or resistive

loads like:

– relay, valve, solenoid, dispenser,

– pump, fan, low power motor, door lock

–lamp

Description

The ACS108 belongs to the AC switch range

performance switch can control a load of up to 0.8

A. The ACS108 switch includes an overvoltage

crowbar structure to absorb the inductive turn-off

energy, and a gate level shifter driver to separate

the digital controller from the main switch. It is

triggered with a negative gate current flowing out

of the gate pin.

Figure 1. Functional diagram

®: A.S.D. is a registered trademark of STMicroelectronics

TM: ACS is a trademark of STMicroelectronics

COM

OUT

COM

G

COM

OUT

G

SOT-223

ACS108-6SN

ACS108-8SN

TO-92

ACS108-6SA

ACS108-8SA

Table 1. Device summary

Symbol

Value

Unit

0.8

A

600 and 800

V

10

mA

OUT

COM

G

COM

Common drive reference to connect

to the mains

OUT

Output to connect to the load.

G

Gate input to connect to the controller

through gate resistor

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