151DHV View Datasheet(PDF) - STMicroelectronics
Part Name
Description
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151DHV Datasheet PDF : 9 Pages
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®
A.S.D.™
LCP1521
PROGRAMMABLE TRANSIENT VOLTAGE
SUPPRESSOR FOR SLIC PROTECTION
FEATURES
s Dual programmable transient suppressor
s Wide negative firing voltage range:
VMGL = -150 V max.
s Low dynamic switching voltages: VFP and VDGL
s Low gate triggering current: IGT = 5 mA max
s Peak pulse current: IPP = 30 A (10/1000 µs)
s Holding current: IH = 150 mA min
DESCRIPTION
This device has been especially designed to
protect new high voltage, as well as classical
SLICs, against transient overvoltages.
SO-8
Positive overvoltages are clamped by 2 diodes.
Negative surges are suppressed by 2 thyristors,
their breakdown voltage being referenced to -VBAT
through the gate.
This component presents a very low gate FUNCTIONAL DIAGRAM
triggering current (IGT) in order to reduce the cur-
rent consumption on printed circuit board during
the firing phase.
A particular attention has been given to the internal
TIP 1
TIP
wire bonding. The Kelvin method configuration en-
sures reliable protection, reducing the overvoltage
GATE
GND
introduced by the parasitic inductances of the wiring,
especially for very fast transients.
NC
GND
BENEFITS
RING
RING
Trisils are not subject to ageing and provide a fail
safe mode in short circuit for a better protection.
Trisils are used to help equipment to meet various
standards such as UL1950, IEC950 / CSA C22.2,
UL1459 and FCC part68. Trisils have UL94 V0
resin approved (Trisils are UL497B approved (file:
E136224)).
January 2002 - Ed: 3B
1/9
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