LCDP1511D STMICROELECTRONICS | Alldatasheet

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Technical content

LCDP1511D September 1999 - Ed:2A DUAL LINE PROGRAMMABLE TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION SO8 Dualline programmabletransientsuppressor Wide negative firing voltage range : VMGL = -80V Low dynamic switching voltages : VFP and VDGL Low gate triggeringcurrent : IGT = 5mA max Peak pulse current : IPP = 15 A (10/1000µs) Holding current : IH > 150 mA

FEATURES

The LCDP1511D is a dual line protectorwhich pro- tects subscriber line interface circuits (SLIC) against transient overvoltages. Positive overvoltages are clamped with diodes to- wards GND, while negative overvoltages are sup- pressed by thyristors connected to GND. The breakdown voltage of the thyristors is determined by the voltage applied to the gate, generally -V bat.

DESCRIPTION

Application Specific Discretes A.S.D.TM COMPLIES WITH THE FOLLOWING STANDARDS: Peak Surge Voltage (V) Voltage Waveform (µs) Current Waveform (µs) Admissible Ipp (A) Necessary Resistor (Ω ) ITU-T K20 1000 10/700 5/310 25 - VDE0433 2000 10/700 5/310 25 40 VDE0878 1500 1.2/50 1/20 40 - IEC1000-4-5 level 2 level 2 1.2/50 FCC Part 68 1500 800 BELLCORE NWT-001089-CORE 2500 1000 TIP 1 RING 1 81 TIP 2 RING 2 54 GATE GATE GND GND FUNCTIONAL DIAGRAM

Symbol Parameter Value Unit Rth (j-a)Junction to ambient 170 °C/W THERMAL RESISTANCE Symbol Parameter Value Unit IPP Peak pulse current (see note1) 10/1000µs 5/310µs 2/10µs A IFSM Non repetitive surge peak on-state current (see note2) tp = 10ms tp =1 s 3.5 A VMLG VMGL Maximum voltage LINE/GND Maximum voltage GATE/LINE V Tstg Storage temperature range - 55 to + 150 °C TL Lead temperature for soldering during 10s 260 °C ABSOLUTEMAXIMUM RATINGS (Tamb =2 5°C). 100 %I PP t ttrp Note 1:Pulse waveform 10 / 1000µst r = 1 0µs tp = 1000 µs 5 / 310µst r = 5 µs tp = 310 µs 2/1 0µst r = 2 µst p = 1 0 µs Note 2 :Maximum current flowing through the 4 wires together. Symbol Parameter IGT Gate triggering current IH Holding current IRM Reverse leakage current LINE / GND IRG Reverse leakage current GATE / LINE VRM Reverse voltage LINE / GND VGT Gate triggering voltage VF Forward drop voltage LINE / GND VFP Peak forward voltage VDGL Dynamic switching voltage GATE / LINE VGATE GATE / GND voltage VRG Reverse voltage GATE / LINE C Capacitance LINE / GND ELECTRICALCHARACTERISTICS (Tamb =2 5°C) VDGL VRMVR IPP IH IR IRM VF LCDP1511D

Symbol Test conditions Max Unit VF Square pulse : tp = 500µsI F =1 A 2V VFP (note 1) 10/700µs 1.2/50µs 2/10µs 1kV 1.5kV 2.5kV R P =6 0Ω R P =6 0Ω R P = 245Ω IPP = 10A IPP = 15A IPP = 10A V note 1 : see test circuit for VFP ,RP is the protection resistor located on the line card PARAMETERS RELATED TO THE DIODE LINE / GND (Tamb =2 5°C) Symbol Test conditions Max Unit IRM VGATE/ LINE = -1V V RM = -75V 5 µA C VR = -3V F = 1MHz VR = -48V F = 1MHz 200 100 pF PARAMETERS RELATED TO LINE / GND (Tamb =2 5°C) Symbol Test conditions Min Max Unit IGT VGND / LINE= -48V 5m A IH VGATE = -48V (see note 2) 150 mA VGT at IGT 2.5 V IRG VRG = -75V 5 µA VDGL VGATE = -48V (see note 3) 10/700µs 1.2/50µs 2/10µs 1kV 1.5kV 2.5kV R P =6 0Ω R P =6 0Ω R P =245Ω IPP = 10A IPP = 15A IPP = 10A V note 2 : see functional holding current test circuit note 3 : See test circuit for VDGL The oscillations with a timeduration lower than 50ns are not taken into account PARAMETERS RELATED TO THE PROTECTION THYRISTOR (Tamb =2 5°C) t(s) ITSM(A) F=50Hz Tj initial=25°C Fig. 1:Surgepeakcurrentversusoverloadduration. -40 -20 0 20 40 60 80 100 1200.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Tj(°C) IH[Tj] / IH[Tj=25°C] Fig. 2:Relative variation of holding current versus junction temperature. LCDP1511D

Pulse (µs) V p C1 C2 LR 1 R 2 R 3 R 4 IPP R p tr tp (V) ( µF) (nF) ( µH) ( Ω )( Ω )( Ω )( Ω ) (A) ( Ω ) 10 700 1000 20 200 0 50 15 25 25 10 60 1.2 50 1500 1 33 0 76 13 25 25 15 60 2 10 2500 10 0 1.1 1.3 0 3 3 10 245 TEST CIRCUIT FOR VFP AND V DGL PARAMETERS This is a GO-NO GO test which allows to confirm the holding current (IH ) level in a functionaltest circuit. TEST PROCEDURE : - Adjust the current level at the IH value by short circuiting the D.U.T. - Fire the D.U.T. with a surge current : IPP = 15A, 10/1000µs. - The D.U.T. will come back to the off-state within a durationof 50ms max. CC R R TIP RING GND VP R 2 R 1 (V is defined in unload condition)P L R -VP VBAT -4 8V= Surge generatorD.U.T. FUNCTIONAL HOLDING CURRENT (I H ) TEST CIRCUIT : GO-NO GO TEST LCDP1511D

APPLICATION CIRCUIT: PABX line protection APPLICATION CIRCUIT: Line Card protection LCDP1511D SLIC -Vbat SLIC -Vbat PTC or Fuse PTC or Fuse RP RP Line 1 CLP30-200B1 PTC or Fuse PTC or Fuse RP RP Line 2 CLP30-200B1 Ring relay Ring relay LCDP1511D SLIC -Vbat SLIC -Vbat PTC or Fuse PTC or Fuse R PP R R R R R R P P P Line 1 Ring relay Ring relay 1protection PTC or Fuse PTC or Fuse Line 2 Ring relay protection Ring relay LCDP1511D

SO8 (Plastic) Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written ap- proval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics  1999 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com REF. DIMENSIONS Millimetres Inches A 1.75 0.069 a1 0.1 0.25 0.004 0.010 a2 1.65 0.065 a3 0.65 0.85 0.025 0.033 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 c1 45 °(typ) D 4.8 5.0 0.189 0.197 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 F 3.8 4.0 0.15 0.157 L 0.4 1.27 0.016 0.050 M 0.6 0.024 S8 ° (max) L E D M S eb A C a1 b F Ordre code Marking Package Weight Base qty Delivery mode LCDP1511D LCDP15 SO8 0.077 g 100 Tube LCDP1511DRL LCDP15 SO8 0.077 g 2500 Tape & reel LCDP1511D