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This is information on a product in full production.
July 2015 DocID16804 Rev 6 1/11
LCP1521S
Programmable transient voltage suppressor for SLIC protection
Datasheet - production data
Features
• Programmable transient suppressor
• Wide negative firing voltage range:
V
Gn
= -175 V max.
• Low dynamic switching voltages:
V
FP
and V
DGL
• Low gate triggering current: I
GT
= 5 mA max.
• Peak pulse current: I
PP
= 40 A (5/310 µs)
• Holding current: I
H
= 150 mA min.
Benefits
• Trisil™ is not subject to ageing and provides a
fail safe mode in short circuit for a better level
of protection.
• Trisils are used to ensure equipment meets
various standards such as UL60950,
IEC 60950 / CSA C22.2, UL1459, TIA-968-A
(formerly FCC part 68)
• Trisils have UL94 V0 approved resin (Trisils
are UL497B approved [file: E136224]).
Description
These devices have been especially designed to
protect 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 -V
BAT
through the gate.
These components present a very low gate
triggering current (I
GT
) in order to reduce the
current consumption on printed circuit board
during the firing phase.
Figure 1. Functional diagram
TM: Trisil is a trademark of STMicroelectronics
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