This is information on a product in full production.

August 2013

DocID13397 Rev 5

1/10

LCP1531

Programmable transient voltage suppressor for SLIC protection

Datasheet

Figure 1. LCP1531 functional diagram

Features

• Dual programmable transient suppressor

• Wide negative firing voltage range:

• Low dynamic switching voltages:

• Holding current: I

• Low space consuming package

Benefits

• A Trisil™ is not subject to ageing and provides

a fail-safe mode in short circuit for better

protection.

• Trisils are used to help equipment to meet

various standards such as YDT695, GR-1089

and ITU-T K20/21.

• Trisils are UL94 V0 resin approved and are

UL497B approved [file: E136224]).

Description

These devices are ideally suited to meet the

protection requirement of VoIP SLICs located in

next generation residential gateways. They can

be used for protecting any ringing SLIC since they

meet the protection standard requirements.

Positive overvoltages are clamped by 2 diodes.

Negative surges are suppressed by 2 thyristors,

through the gate.

These components present a very low gate

consumption on printed circuit board during the

firing phase.

TM: Trisil is a trademark of STMicroelectronics

SO-8

TIP

Gn

NC

RING

TIP

GND

RING

GND

1

www.st.com