LCDP1521_06 Datasheet, PDF (1/11 Pages) STMicroelectronics – Dual line programmable transient voltage suppressor for SLIC protection

LCDP1521
Dual line programmable transient voltage suppressor for
SLIC protection
Features
■ Dual line programmable transient voltage
suppressor
■ Wide negative firing voltage range:
■ V_MGL = -150 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 = 20 A (10/1000 µs)
■ Holding current: I_H = 150 mA min
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 -V_BAT
through the gate.
This component presents a very low gate
triggering current (I_GT) in order to reduce the
current consumption on printed circuit board
during the firing phase.
Benefits
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)).
SO-8
Functional diagram
TIP 1 1
GATE 2
GATE 3
TIP 2 4
8 RING 1
7 GND
6 GND
5 RING 2
February 2006
www.st.com
Rev 3
1/11
11