LCDP1511D Application Specific Discretes A.S.D.TM DUAL LINE PROGRAMMABLE TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION FEATURES Dualline programmable transient suppressor Wide negative firing voltage range : VMGL = -80V Low dynamic switching voltages : VFP and VDGL Low gate triggering current : IGT = 5mA max Peak pulse current : IPP = 15 A (10/1000 µs) Holding current : IH > 150 mA DESCRIPTION The LCDP1511D is a dual line protector which protects subscriber line interface circuits (SLIC) against transient overvoltages. Positive overvoltages are clamped with diodes towards GND, while negative overvoltages are suppressed by thyristors connected to GND. The breakdown voltage of the thyristors is determined by the voltage applied to the gate, generally -Vbat. SO8 FUNCTIONAL DIAGRAM TIP 1 1 8 RING 1 GATE 2 7 GND GATE 3 6 GND TIP 2 4 5 RING 2 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 COMPLIES WITH THE FOLLOWING STANDARDS: 1500 1.2/50 1/20 40 - IEC1000-4-5 level 2 level 2 10/700 1.2/50 5/310 8/20 25 25 - FCC Part 68 1500 800 10/160 10/560 10/160 10/560 30 20 5 BELLCORE NWT-001089-CORE 2500 1000 2/10 10/1000 2/10 10/1000 70 15 25 45 September 1999 - Ed:2A 1/6 LCDP1511D ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C). Symbol Parameter Value Unit Peak pulse current (see note1) 10/1000µs 5/310µs 2/10µs 15 25 70 A IFSM Non repetitive surge peak on-state current (see note2) tp = 10ms tp = 1s 5 3.5 A VMLG VMGL Maximum voltage LINE/GND Maximum voltage GATE/LINE 80 80 V - 55 to + 150 °C 260 °C IPP Storage temperature range Tstg Lead temperature for soldering during 10s TL Note 1: Pulse waveform 10 / 1000 µs 5 / 310 µs 2 / 10 µs tr = 10 µs tr = 5 µs tp = 1000 µs tp = 310 µs tr = 2 µs tp = 10 µs % IPP 100 Note 2 : Maximum current flowing through the 4 wires together. 50 0 tr t tp THERMAL RESISTANCE Symbol Rth (j-a) Parameter Junction to ambient Value Unit 170 °C/W ELECTRICAL CHARACTERISTICS (Tamb = 25°C) Symbol Parameter IGT Gate triggering current IH Holding current IRM IRG Reverse leakage current LINE / GND VRM Reverse voltage LINE / GND VGT VF VFP Gate triggering voltage VDGL Dynamic switching voltage GATE / LINE VGATE VRG GATE / GND voltage C 2/6 Reverse leakage current GATE / LINE VDGL VR VRM VF Forward drop voltage LINE / GND IRM IR Peak forward voltage IH Reverse voltage GATE / LINE Capacitance LINE / GND IPP LCDP1511D PARAMETERS RELATED TO THE DIODE LINE / GND (Tamb = 25°C) Symbol Test conditions Square pulse : tp = 500µs VF VFP (note 1) 10/700µs 1.2/50µs 2/10µs IF = 1A 1kV 1.5kV 2.5kV IPP = 10A IPP = 15A IPP = 10A RP = 60Ω RP = 60Ω RP = 245Ω Max Unit 2 V 5 10 20 V Max Unit 5 mA note 1 : see test circuit for VFP, RP is the protection resistor located on the line card PARAMETERS RELATED TO THE PROTECTION THYRISTOR (Tamb = 25°C) Symbol Test conditions IGT VGND / LINE = -48V IH VGATE = -48V (see note 2) VGT at IGT IRG VRG = -75V VGATE = -48V VDGL 150 mA 2.5 V 5 µA 7 15 20 V Max Unit 5 µA 200 100 pF (see note 3) 1kV 1.5kV 2.5kV 10/700µs 1.2/50µs 2/10µs Min RP = 60Ω RP = 60Ω RP =245Ω IPP = 10A IPP = 15A IPP = 10A note 2 : see functional holding current test circuit note 3 : See test circuit for VDGL The oscillations with a time duration lower than 50ns are not taken into account PARAMETERS RELATED TO LINE / GND (Tamb = 25°C) Symbol Test conditions VGATE / LINE = -1V IRM VRM = -75V VR = -3V F = 1MHz VR = -48V F = 1MHz C Fig. 1: Surge peakcurrent versus overloadduration. ITSM(A) IH[Tj] / IH[Tj=25°C] 7 F=50Hz Tj initial=25°C 6 5 4 3 2 1 t(s) 0 0.01 Fig. 2: Relative variation of holding current versus junction temperature. 0.10 1.00 10.00 100.00 1000.00 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 Tj(°C) -20 0 20 40 60 80 100 120 3/6 LCDP1511D FUNCTIONAL HOLDING CURRENT (IH) TEST CIRCUIT : GO-NO GO TEST R - VP VBAT = - 48 V D.U.T. Surge generator 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 duration of 50ms max. TEST CIRCUIT FOR VFP AND VDGL PARAMETERS R4 (V is defined in unload condition) P TIP L R2 RING R3 VP R1 C1 C2 G ND Pulse (µs) Vp C1 C2 L R1 R2 R3 R4 IPP Rp 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 4/6 LCDP1511D APPLICATION CIRCUIT: PABX line protection LCDP1511D PTC or Fuse Line 1 -Vbat RP Ring relay protection Ring relay 1 SLIC RP PTC or Fuse -Vbat PTC or Fuse RP Line 2 Ring relay protection Ring relay 2 SLIC RP PTC or Fuse APPLICATION CIRCUIT: Line Card protection LCDP1511D -Vbat PTC or Fuse RP Line 1 CLP30-200B1 Ring relay 1 SLIC RP PTC or Fuse -Vbat PTC or Fuse RP Line 2 CLP30-200B1 Ring relay 2 SLIC RP PTC or Fuse 5/6 LCDP1511D DIMENSIONS PACKAGE MECHANICAL DATA SO8 (Plastic) c1 C a1 S 1.65 0.065 0.1 0.85 0.025 0.48 0.014 0.033 0.019 b1 b1 0.19 0.25 0.007 0.010 C c1 0.25 0.50 0.010 45° (typ) 0.020 D 4.8 5.0 0.189 0.197 E e e3 5.8 6.2 0.228 0.244 F L M 3.8 0.4 M 5 F 1 0.069 0.010 0.65 0.35 D 8 1.75 0.25 0.004 a3 b E e3 A a1 a3 A e b Millimetres Inches Min. Typ. Max. Min. Typ. Max. a2 L a2 REF. 4 0.50 1.27 3.81 0.050 0.150 4.0 0.15 1.27 0.016 0.6 S 0.157 0.050 0.024 8° (max) 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 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 approval of STMicroelectronics. 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