DATA SHEET VB SERIES TO 3 WATTS • • • • • • • • • • Surface mount Efficiency up to 83% 2/1 input range (9 to 75 Vin) 1500VDC isolation Continuous short-circuit protection Tight line/load regulation Single and dual outputs MTBF > 1,000,000 hours minimum UL/CUL 1950 safety approval Water washable This economically priced dc/dc converter offers 3 wide input ranges of 9-18, 18-36, and 36-75VDC. It is suitable for telecom, process control, battery backup, and other applications where tight line/load regulation is required. MODELS INPUT VOLTAGE (VDC) 12 (9 - 18) 24 (18 - 36) 48 (36 - 75) OUTPUT VOLTAGE (VDC) OUTPUT CURRENT (mA) EFFICIENCY (%) 3.3 5 12 15 ±5 ±12 ±15 3.3 5 12 15 ±5 ±12 ±15 3.3 5 12 15 ±5 ±12 ±15 700 600 250 200 ±300 ±125 ±100 700 600 250 200 ±300 ±125 ±100 700 600 250 200 ±300 ±125 ±100 75 79 82 82 78 81 81 76 80 83 83 79 82 82 76 80 83 83 79 82 82 MODEL NUMBER VB12S3.3-2.3 VB12S5-3 VB12S12-3 VB12S15-3 VB12D5-3 VB12D12-3 VB12D15-3 VB24S3.3-2.3 VB24S5-3 VB24S12-3 VB24S15-3 VB24D5-3 VB24D12-3 VB24D15-3 VB48S3.3-2.3 VB48S5-3 VB48S12-3 VB48S15-3 VB48D5-3 VB48D12-3 VB48D15-3 8/2/2006 603 778 2300 www.wallindustries.com 1 DATA SHEET VB SERIES SPECIFICATIONS TO 3 WATTS All specifications apply at 25ºC unless otherwise noted. SPECIFICATION VALUE INPUT Input Voltage Range Input Filter 9-18, 18-36, 36-75 Pi Filter OUTPUT Output Current Voltage Accuracy Line Regulation (HL-LL) Load Regulation (10-100% load) Short Circuit Protection Ripple/Noise (20MHz BW) Transient Response see model information table ±0.5% typ., 1.0% max. ±0.3% max. ±0.3% typ., 1.0% max. continuous 75 mV p-p max. 200 uS typ., 500uS max. GENERAL Efficiency Isolation Voltage (input to output) Isolation Resistance (500 VDC) Switching Frequency see model information table 1500 VDC 1000 M Ohms 300 kHz typ. ENVIRONMENTAL Operating Temperature (ambient) Storage Temperature Humidity (non-condensing) Cooling -40°C to +71°C (case 90°C) -40°C to +125°C 95% max. free air convection PHYSICAL Dimensions Weight Case Material Flammability 1.27 x 0.74 x 0.4 inches 5.75 grams non-conductive black plastic UL94V-0 due to advances in technology, specifications subject to change without notice. NOTES 1) Efficiency (%) measured at maximum load. 2) These converters require a minimum load to maintain specified regulation. 3) All dc/dc converters should be externally fused at the input side for protection, consult factory for more information. 4) Other input and output voltages may be available, please consult factory for more information. 5) Specifications subject to change without notice. 6) Operation under no-load conditions will NOT damage these converters however they may not meet all listed specifications under such conditions. 7) Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. 8/2/2006 603 778 2300 www.wallindustries.com 2 DATA SHEET VB SERIES TO 3 WATTS Units are encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical characteristics over a wide temperature range or in high humidity environments. The encapsulant and unit case are both rated to UL 94V-0 flammability specifications. Leads are tin plated for improved solderability. 8/2/2006 603 778 2300 www.wallindustries.com 3 DATA SHEET VB SERIES TO 3 WATTS 8/2/2006 603 778 2300 www.wallindustries.com 4 DATA SHEET VB SERIES TO 3 WATTS 8/2/2006 603 778 2300 www.wallindustries.com 5