LCP1521S_06 Datasheet, PDF (1/11 Pages) STMicroelectronics – Programmable transient voltage suppressor for SLIC protection

LCP1521S/LCP152DEE
ASD (Application Specific Devices)
Programmable transient voltage suppressor for SLIC protection
Features
■ Dual programmable transient 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 = 30 A (10/1000 µs)
■ Holding current: I_H = 150 mA min
■ Low space consuming package
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.
Benefits
TRISILs™ are not subject to ageing and provide 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,
IEC950 / CSA C22.2, UL1459 and FCC part 68.
Trisils have UL94 V0 approved resin (Trisils are
UL497B approved [file: E136224]).
SO-8
LCP1521S
QFN 3x3 6 leads
LCP152DEE
Order codes
Part Number
LCP1521S
LCP1521SRL
LCP152DEERL
Marking
CP152S
CP152S
LCP152
Figure 1. LCP1521S Functional diagram
TIP 1
GATE
NC
RING
TIP
GND
GND
RING
Figure 2. LCP152DEE Functional diagram
TIP
TIP
GATE
GND
NC
TM: TRISIL is a trademark of STMicroelectronics
RING
RING
July 2006
Rev 5
1/11
www.st.com
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