February 2017

Doc16268 Rev 7

1/13

This is information on a product in full production.

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LCDP1521S

Dual line programmable transient voltage suppressor for

SLIC protection

Datasheet - production data

Features



Dual line programmable transient voltage

suppressor with separated gates



Wide negative firing voltage range:



Low dynamic switching voltages:





= 40 A (5/310 μs)



Benefits



A Trisil™ is not subject to ageing and

provides a fail safe mode in short circuit for a

better protection.



Trisils are used to help equipment to meet

various standards such as UL1950,

IEC 60950 / CSA C22.2, UL1459 and

TIA-968-A (formerly FCC part 68).



Trisils have UL94 V0 resin approved (Trisils

are UL497B approved - file: E136224).

Description

This device has been especially designed to

protect 2 new high voltage, as well as classical

SLICs, against transient overvoltages.

Positive overvoltages are clamped by 2 diodes.

Negative surges are suppressed by 2 thyristors,

their breakdown voltage being referenced to

SLICs to be supplied by two different voltages.

Figure 1: Functional diagram

SO-8

Gn1

Gn2

GND

GND

1

2

3

4

8

7

6

5

Line

(TIP1 or RING1)

Line

(TIP2 or RING2)

Line

(RING2 or TIP2)

Line

(RING1 or TIP1)