DSL01-024SC5

DSL01-xxxSC5 Secondary protection for DSL lines Features ■ Low capacitance devices: – DSL01-xxxSC5: Delta Ctyp = 3.5 pF ■ High surge capability: 30 A - 8/20 µs ■ Voltage: 8 V, 10.5 V, 16 V, and 24 V ■ RoHS package 4 5 3 2 1 SOT23-5L (SC-59) Benefits ■ ■ Transil™ mode will clamp ESD and low energy surges without disturbing line drivers during transmission while high energy surges will be short circuited to avoid line driver damage. Figure 1. Functional diagram 1-5 The low capacitance makes it suitable for ADSL2+ and VDSL signals. Complies with the following standards ■ 3-4 IEC 61000-4-2, level 4 – 15 kV (air discharge) – 8 kV (contact discharge) Pin 2: Not to be connected ■ MIL STD 883G-Method 3015-7: Class 3 – 25 kV (Human body model) ■ IEC 61000-4-5, level 2: 24 A, 8/20 µs Applications ■ Secondary protection to be located after the transformer of ADSL and VDSL modem either on central office or subscriber side. ■ Replaces crowbar protection located on primary side. Description This device combines a Transil used for low energy surges and a Trisil™ for high energy surges. This combination provides a surge / capacitance trade-off compatible with high debit rates such as ADSL2+ and VDSL. The combination on the same die makes it compatible with SOT23-5L package. TM: Transil and Trisil are trademarks of STMicroelectronics June 2010 Doc ID 13179 Rev 3 1/8 www.st.com 8 Characteristics DSL01-xxxSC5 1 Characteristics Table 1. Absolute maximum ratings (Tamb = 25 °C) Symbol Parameter Peak pulse current (1) Ipp Tstg Tj Value Unit tr = 8 µs, tp = 20 µs 30 A tr = 10 µs, tp = 1000 µs 18 A -55 to 150 -40 to 125 °C °C 260 °C Storage temperature range Operating junction temperature range Maximum temperature for soldering during 10 s TL 1. For pulse waveform see Figure 2. Figure 2. Pulse waveform %IPP Repetitive peak pulse current tr = rise time (µs) tp = pulse duration time (µs) 100 50 0 tr Table 2. t tp Electrical characteristics (Tamb = 25 °C) IRM @ VRM Order code VBR @ IBR min. VBO IH C ΔC mA max. V typ. mA max. pF(1) typ. pF(2) VBR @ IBR typ. max. µA V DSL01-008SC5 0.5 8 9.5 1 11 10 20 100 20 3.5 DSL01-010SC5 0.5 10.5 11 1 12 10 25 100 17 3.5 DSL01-016SC5 0.5 16 18 1 20 10 40 100 15 3.5 DSL01-024SC5 0.5 24 25 1 28 10 45 100 12 3.5 V mA V 1. Test conditions : VR = 2 V bias, VRMS = 1 V, F = 1 MHz 2. Measured between 1 V and VRM 2/8 Doc ID 13179 Rev 3 DSL01-xxxSC5 2 Application information Application information The DSL01 series has been designed to be implemented after the transformer of a DSL system to comply with world wide standards such as ITU-T K20/21 and Telecordia GR-1089 without using crowbar protection such as Trisils or gas tube before the transformer. The planar technology used for the DSL01 provides an excellent trade-off between capacitance and surge capability, typically 12 pF for the DSL01-008, providing compliance with Telecordia GR-1089 (500A 2/10µs). But, the key point is the low variation of the capacitance versus xDSL signal. This is designed to eliminate limitations in signal performance. Figure 3 shows the schematic used for a complete protection (differential and common mode) but in some cases depending on the line driver circuitry only differential or common can be used. Figure 3. Differential and common mode protection DSL01 TCP1.25A Tip DSL01 Ring DSL01 The topology shown in Figure 4 is for differential protection of line drivers and capacitances. Figure 4. Differential protection of the line drivers TCP1.25A Tip DSL01 DSL01 Ring Doc ID 13179 Rev 3 3/8 Application information DSL01-xxxSC5 The toplogy shown in Figure 5 is for protection connected to the output winding of the transformer. Figure 5. Protection connected to the output winding of the transformer TCP1.25A DSL01 Tip Ring DSL01 Figure 6. Recommended layout 1 5 2 3 4 Concerning Figure 6: 4/8 ● Pins 1 and 5 must be connected together. ● Pins 3 and 4 must be connected together. ● Pin 2 must not be connected. Doc ID 13179 Rev 3 PCB tracks DSL01-xxxSC5 3 Ordering information scheme Ordering information scheme Figure 7. Ordering information scheme DSL 01 - xxx SC5 DSL line protection Version Stand-off voltage 008 = 8V 010 = 10.5 V 016 = 16V 024 = 24V Package SC5 = SOT23-5L Doc ID 13179 Rev 3 5/8 Package information 4 DSL01-xxxSC5 Package information ● Epoxy meets UL 94, V0 ● Lead-free package In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Table 3. SOT23-5L dimensions Dimensions Ref. Millimeters Inches A Min. Typ. Max. E e B D Typ. Max. A 0.90 A1 0 A2 0.90 1.30 0.035 0.051 b 0.35 0.50 0.014 0.020 c 0.09 0.20 0.004 0.008 D 2.80 3.00 0.11 0.118 E 1.50 1.75 0.059 0.069 e A2 e c Min. 1.45 0.035 0.057 0.10 0.004 0 0.95 0.037 A1 θ L H 2.60 3.00 0.102 0.118 L 0.10 0.60 0.004 0.024 M 0° H Marking 2.30 1.10 4 Footprint (dimensions in mm) Figure 9. 0° 5 Figure 8. 10° 3.50 0.95 x x x x 0.60 6/8 Doc ID 13179 Rev 3 3 1 1.20 10° DSL01-xxxSC5 5 Ordering information Ordering information Table 4. 6 Ordering information Order code Marking DSL01-008SC5 XT08 DSL01-010SC5 XT12 DSL01-016SC5 WT16 DSL01-024SC5 WT24 Package Weight Base qty Delivery mode SOT23-5L 16 mg 3000 Tape and reel Revision history Table 5. Document revision history Date Revision Changes 15-Nov-2006 1 Initial release. 26-Aug-2008 2 Added UL 94 and ECOPACK statements. Added part numbers DSL01-010SC5 and DSL01-024SC5. 28-Jun-2010 3 Added trademark symbol and statement for Trisil on the coverpage. 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