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LCP1521

ST Microelectronics
Part Number LCP1521
Manufacturer ST Microelectronics
Description PROGRAMMABLE TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION
Published Apr 25, 2005
Detailed Description ® LCP1521 PROGRAMMABLE TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION Application Specific Discretes A.S.D.TM FEATUR...
Datasheet PDF File LCP1521 PDF File

LCP1521
LCP1521


Overview
® LCP1521 PROGRAMMABLE TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION Application Specific Discretes A.
S.
D.
TM FEATURES Dual programmable transient suppressor Wide negative firing voltage range: VMGL = -150 V max.
Low dynamic switching voltages: VFP and VDGL Low gate triggering current: IGT = 2 mA max Peak pulse current: IPP = 30 A (10/1000 µs) Holding current: IH = 150 mA SO-8 DESCRIPTION This device has been especially designed to protect new high voltage, as well as classical SLICs, against transient overvoltages.
Positive overvoltages are clipped with 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 triggering current (IGT) in order to reduce the current consumption on printed circuit board during the firing phase.
A particular attention has been given to the internal wire bonding.
The Kelvin method configuration ensures reliable protection, reducing the overvoltage introduced by the parasitic inductances of the wiring L x(dI/dt), especially for very fast transients.
FUNCTIONAL DIAGRAM TIP TIP GATE GND NC GND RING RING September 1999 - Ed: 2A 1/9 LCP1521 COMPLIES WITH THE FOLLOWING STANDARDS: ITU-T K20 VDE0433 VDE0878 IEC1000-4-5 FCC Part 68 lightning surge type A FCC Part 68 lightning surge type B BELLCORE: NWT-001089-CORE First level BELLCORE: NWT-001089-CORE Second level Peak Surge Voltage (V) 4000 1000 2000 2000 level 3 level 4 1500 800 1000 2500 1000 5000 Voltage Waveform (µs) 10/700 10/700 10/700 1.
2/50 10/700 1.
2/50 10/160 10/560 9/720 2/10 10/1000 2/10 Current Waveform (µs) 5/310 5/310 5/310 1/20 5/310 8/20 10/160 10/560 5/320 2/10 10/1000 2/10 Admissible Ipp (A) 40 25 40 50 40 100 50 35 25 170 30 170 Necessary Resistor (Ω) 60 10 2 10 22 15 10 24 20 Note 1: the mentioned value of the series resistance is the minimum value needed to fulfill the standard requirement.
ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C, unless otherwise s...


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