LCDP1521S Dual line programmable transient voltage suppressor for SLIC protection Datasheet - production data 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 -VBAT through the gate. Separated gates allow the SLICs to be supplied by two different voltages. SO-8 Figure 1: Functional diagram Line Line (TIP1 or RING1) (RING1 or TIP1) 1 8 Features Dual line programmable transient voltage suppressor with separated gates Wide negative firing voltage range: 2 7 GND Gn1 VGn = -175 V max. Low dynamic switching voltages: V and V FP DGL Gn2 3 6 GND Low gate triggering current: I = 5 mA max GT Peak pulse current: IPP = 40 A (5/310 s) Holding current: IH = 150 mA min. Line Line (TIP2 or RING2) (RING2 or TIP2) Benefits 4 5 A Trisil is not subject to ageing and provides a fail safe mode in short circuit for a better protection. Trisils are used to help equipment to meet various standards such as UL1950, IEC 60950 / CSA C22.2, UL1459 and TIA-968-A (formerly FCC part 68). Trisils have UL94 V0 resin approved (Trisils are UL497B approved - file: E136224). February 2017 Doc16268 Rev 7 1/13 www.st.com This is information on a product in full production. Characteristics LCDP1521S 1 Characteristics Table 1: Standards compliance Minimum serial Peak surge Voltage Required peak Current Standard resistor to meet voltage (V) waveform current (A) waveform standard ( ) 2500 2/10 s 500 2/10 s 20 GR-1089 Core First level 1000 10/1000 s 100 10/1000 s 30 GR-1089 Core 5000 2/10 s 500 2/10 s 40 Second level GR-1089 Core 1500 2/10 s 100 2/10 s 0 Intra-building 6000 150 110 ITU-T-K20/K21 10/700 s 5/310 s 1500 37.5 0 8000 ESD contact discharge 0 ITU-T-K20 (IEC 1/60 ns 61000-4-2) 15000 ESD air discharge 0 4000 10/700 s 100 5/310 s 60 IEC 61000-4-5 4000 1.2/50 s 100 8/20 s 5 TIA-968-A, 1500 10/160 s 100 10/160 s 26 lightning surge 800 10/560 s 200 10/560 s 19 type A TIA-968-A, lightning surge 1000 9/720 s 25 5/320 s 0 type B Table 2: Thermal resistances Symbol Parameter Value Unit Rth(j-a) Junction to ambient 170 C/W 2/13 Doc16268 Rev 7