LCP1521

®

September 1999 - Ed: 2A

PROGRAMMABLE TRANSIENT VOLTAGE

SUPPRESSOR FOR SLIC PROTECTION

SO-8

Dual programmable transient suppressor

Wide negative firing voltage range:

µs)

FEATURES

This device has been especially designed to pro-

tect new high voltage, as well as classical SLICs,

against transient overvoltages.

Positive overvoltages are clipped with 2 diodes.

Negative surges are suppressed by 2 thyris-

tors, their breakdown voltage being referenced

This component presents a very low gate trigge-

sumption on printed circuit board during the firing

phase.

A particular attention has been given to the internal

wire bonding. The Kelvin method configuration en-

sures reliable protection, reducing the overvoltage

introduced by the parasitic inductances of the wir-

ing L x(dI/dt), especially for very fast transients.

DESCRIPTION

Application Specific Discretes

A.S.D.

TM

FUNCTIONAL DIAGRAM

TIP

GATE

NC

RING

TIP

GND

RING

GND

1/9