HDLV S20A-5SDAC Fsmily Description The S20A greatly expands the scope and capability of Bourns Switch Power's High Density, Low Voltage (HDLV) product line. In a compact SIP just 3 inches long the S20A provides 20 Amps of output current at voltages between 1.25 and 3.5 V. Using the space saving packaging of a SIP, the full featured S20A takes up just 1 in2 of board space, and is only 1.0 inch high. The S20A is also available in horizontal mount versions with overall height of less than 0.4 inches. The S20A is designed to work with the latest in 5 V distribution architectures. It uses a 5 bit DAC to set the output between 1.25 and 3.5 V. The programmable output allows standardization on a single part for multiple output voltages. The S20A features superb dynamic response, remote sense, remote enable, high temperature operation, and high efficiency. The S20A is ideal for powering leading edge, high current ASICs, microprocessors, and DSPs. Common Specifications Features * 20-amp Output Current * 90 % Efficiency * Nonisolated Output * Overcurrent Protection * Remote Sense * Short-circuit Protection with auto-restart * Fast Transient Response * Programmable Output * Output Precharge Capability Input Voltage Enable Voltage High = On Low = Off Min Nom Max Units 4.5 5 5.5 Vdc 0.4 Vdc Vdc 2.4 Enable Current Output Current Current Limit Voltage Setpoint Accuracy Line Regulation Load Regulation Ripple / Noise Dynamic Response 10-20A load 1 0 40 50 50 10 10 100 200 100 200 100 20-10A load Temperature Regulation General Operating Temperature Storage Temperature Switching Frequency Efficiency -25 -40 -40 200 300 90 Notes Open = On Use Open Collector to pull low mA 32 60 2 150 A A %Vnom mV mV mV pp mV s mV s 0.02 %Vout/C 85 85 125 400 C C C kHz % i/t=3 A/s i/t=3 A/s i/t=3 A/s i/t=3 A/s optional Asia-Pacific: TEL +886- (0)2 25624117 * FAX +886- (0)2 25624116 Europe: TEL +41-41 768 5555 * FAX +41-41 768 5510 The Americas: TEL +1-951 781 5500 * FAX +1-951 781-5700 Reliable Electronic Solutions www.bourns.com Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. HDLV S20A-5SDAC Fsmily Output Voltage Selection VID4 0 0 0 0 VID3 1 1 1 1 VID2 1 1 1 1 VID1 1 1 0 0 VID0 Output 1 1.30 0 1.35 1 1.40 0 1.45 VID4 1 1 1 1 VID3 1 1 1 1 VID2 1 1 1 1 VID1 1 1 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 VID0 Output 1 1.25* 0 2.10 1 2.20 0 2.30 1.50 1.55 1.60 1.65 1 1 1 1 1 1 1 1 0 0 0 0 1 1 0 0 1 0 1 0 2.40 2.50 2.60 2.70 1 0 1 0 1.70 1.75 1.80 1.85 1 1 1 1 0 0 0 0 1 1 1 1 1 1 0 0 1 0 1 0 2.80 2.90 3.00 3.10 1 0 1 0 1.90 1.95 2.00 2.05 1 1 1 1 0 0 0 0 0 0 0 0 1 1 0 0 1 0 1 0 3.20 3.30 3.40 3.50 *Extended low voltage capability Notes 1. The S20A requires a minimum output capacitance of 300 f for proper operation. 2. A minimum input capacitance of 1,200 f is required for proper operation. Standard Options Add option designators to the end of the part number. Example; S20A-5SDAC-L2 Option Description L Horizontal mount with 0.95 '' board width L2 Horizontal mount with 1.20 '' board width OUTPUT CURRENT (A) S20A-5SDAC THERMAL DERATING 25 0.35 (8.89) 3.03 (76.9) 20 0.05 (1.27) 15 0 LFM 100LFM 200LFM 300LFM 5 40 50 60 70 80 90 AMBIENT TEMP (C) 1.0 max (25.4) 0.03 0.09 (2.28) (0.76) 0.175 0.015 (4.45 0.38) 0.175 0.225 (4.4) (5.7) 10 0 0.5 (12.7) 100 TOP VIEW Recommended Footprint 3.03 (76.9) 94 92 90 0.50 (12.7) 88 86 0.065 (1.65) Series 1 Series 2 Series 3 Series 4 84 82 5 10 15 OUTPUT CURRENT (A) 20 1 27 1 S20A-5SDAC EFFICIENCY CURVES 96 EFFICIENCY (%) AIRFLOW DIRECTION 0.033 (0.84) 2.90 (73.66) 1 VID0 2 VID1 3 VID2 4 VID3 26 x 0.10 (2.54) Pin Connections 5 Remote Enable 13-19 Gnd 20-25 Vout 6 VID4 26 Sense Vout 7-11 Vin 27 No Connect 12 No Connect SIDE VIEW 0.35 max 4 x 0.070 (1.65) plated 27 x 0.045 (1.14) plated 27 26 x 0.100 (2.54) 0.150 (3.81) 2.900 (73.66) inches (mm) 0.xx 0.01 inches 0.xxx 0.005 inches 0.400 1.00 max (10.16) xx0.01 xxx0.005 0.225 (5.72) 0.175 0.015 0.20 max REV. 01/05 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.