HDLV SC20A SERIES Family Description The SC20A is a low-cost, 20-Amp, non-isolated DC-DC converter with an amazingly small footprint of only 0.8 in2. Designed for today's high power microprocessors, the SC20A accepts either 5 V or 3.3 V inputs and offers outputs from 1.3 V to 3.3 V. The SC20A also uses an industrystandard pin-out making it easy to increase power in existing designs. Using Bourns Switch Power's proprietary V2TM architecture, the SC20A provides ultrafast transient response, improved line and load regulation, and very high efficiency. It also incorporates short-circuit protection, Enable / Disable control, output voltage trim, and remote sense. Common Specifications Features • Low Cost • 20-Amp Output Current • 90 % Efficiency • Industry-standard Pin-out • Low 0.6 " Profile • Nonisolated Output • Remote Sense • Trim Function • Enable / Disable • Short-circuit Protection with auto-restart • Fast Transient Response • High-temperature Operation • Output Precharge Capability Input Voltage Current Control Voltage High = Disable Low = Enable E/D Current Output Current Voltage Setpoint Accuracy Voltage Trim Range Line Regulation Load Regulation Current Limit Dynamic Response 0 to 20 A load Min Nom Max Units 4.5 3.0 5 3.3 5.5 3.6 20 Vdc Vdc A 4.75 Vin Startup 0.4 Vdc Vdc mA Source 500 mA Open=Enable 2.4 1 20 ±2 +10 -10 22 ±0.1 ±0.3 25 200 19 200 19 20 to 0 A load Temperature Regulation Patents 5,770,940 5,978,195 General MTBF Operating Temperature 6,127,814 Storage Temperature Switching Frequency 34 300 A %Vnom %Vnom %Vnom %Vnom A mV ∆i/∆t = 3 A/µs µs mV ∆i/∆t = 3 A/µs µs ±0.02 %Vout/°C 1,000 -25 -40 -40 200 Notes 85 85 125 400 kHrs °C °C °C kHz Bellcore TR332, 25 °C 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 SC20A SERIES Family Electrical Specifications Nominal Output Output Input Voltage Current (V) (V) (A) Short-circuit Current (A) typ Noise (mV pp) typ Efficiency (%) typ 89 SC20A-5S3.3 SC20A-5S2.5 SC20A-5S1.9 SC20A-5S1.8 SC20A-5S1.5 5 5 5 5 5 3.3 2.5 1.9 1.8 1.5 20 20 20 20 20 27 27 27 27 27 100 100 100 100 100 SC20A-3S2.5 SC20A-3S1.9 SC20A-3S1.8 SC20A-3S1.5 3.3 3.3 3.3 3.3 2.5 1.9 1.8 1.5 20 20 20 20 27 27 27 27 100 100 100 100 Standard Options 92 Add option designators to the end of the part number. Example; SC20A-5S3.3-B Option Description B No Remote Sense option removes sense pin F 1 % Setpoint Accuracy Z -40 °C Operation X Modified pin length followed by three digits (in mils) 0.83 (21.08) 0.45 (11.43) 0.123 (3.12) 0.37 max (9.4 max) 3.00 (76.2) SC20A Vin Vout - 1 Vout - 2 Vout - 4 7 - Vin 0.60 (15.24) 1234 5 0.24 (6.1) 0.65 (16.51) 0.135 ±0.015 (3.43 ±0.38) 0.020 (0.51) typ pin width 1.800 (45.72) inches (mm) 0.xx ±0.01 inches 0.xxx ±0.005 inches 8 - Vin Vout 100 µf 10 V 6 7 8 910 0.100 (2.54) 1.400 (35.56) 0.012 (0.30) typ pin thickness 100 µf/10 V Pin Pin Description 5,6 1,2,4 Vout 7,8 3 Remote Sense (Removed for B option) 9 10 Remote Sense - 3 10 Enable Description Ground Vin Trim Enable 9 5 6 Trim Note: Component placement may change. Recommended keep-out area equals maximum length and width. Trim Up Trim Down Vout Trim Rdown Rup Gnd All outputs other than 1.5 V Vnom 8.09 Rup = -22 (in kΩ) Vout - Vnom Trim up when Vnom = 1.5 V 3.176 -10 (in kΩ) Vout - Vnom Rup = All outputs other than 1.5 V Vnom 6.04 Vout-8.09 -22 (in kΩ) Rdown = Vnom - Vout Trim down when Vnom = 1.5V 2.37 Vout-3.176 -10 (in kΩ) Vnom - Vout Rdown = REV. 01/05 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.