GA Series 15 Watts Single/Dual Outputs ! ! ! ! 4:1 ultra wide input range Remote shutdown 100kHz switching frequency Continuous short circuit protection ! Six-sided shielding 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 INPUT 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Voltage Range 20-72Vdc 123456789012345678901234567890121234567 Filtering All Models 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Reverse Polarity Protected To Nominal Input Current 123456789012345678901234567890121234567 123456789012345678901234567890121234567 External Fuse Required 123456789012345678901234567890121234567 Remote On/Off Control All Models 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 OUTPUT 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Voltage Tolerance 1% 123456789012345678901234567890121234567 Ripple and Noise 75mV pk-pk 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Short Circuit Protection Continuous Power Cycle 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Temperature Coefficient 0.02% / C 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 GENERAL 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Regulation: 123456789012345678901234567890121234567 Line 0.5% 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Load 2.0% 123456789012345678901234567890121234567 Efficiency 80-85% (typ) 123456789012345678901234567890121234567 123456789012345678901234567890121234567 I/O Isolation 500 Vdc 123456789012345678901234567890121234567 Switching Frequency 100khz (typ) 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 ENVIRONMENTAL 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Operating Temperature -25C to +60C 123456789012345678901234567890121234567 123456789012345678901234567890121234567 Storage Temperature -25C to +105C 123456789012345678901234567890121234567 Cooling Free-air Convection 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 123456789012345678901234567890121234567 All specifications are typical at nominal line and full load at 25C unless 123456789012345678901234567890121234567 123456789012345678901234567890121234567 otherwise noted and are subject to change without notice. 123456789012345678901234567890121234567 T he GA series is an economically priced 15 watt DC/DC converter featuring ultra-wide input range, efficiencies to 85% and a continuous six-sided shielded case. Low ESR capacitors are used both on the input and the output(s) to minimize the conductive noise. Other key features include: overvoltage protection, output trim adjustability, TTL and CMOS compatible remote on/off, short circuit protection and small size. The GA series measures only 1.6" x 2.0" x 0.40" and offers a power density of 11.7 watts/cu. in. Applications These units are ideally suited for telecommunications, distributed power systems, automatic test equipment, geosource test equipment and process control. 1 GA Series Ordering Information Input Voltage Range Output Voltage Output Current Model Number 20-72 Vdc 5 Vdc 3000mA GA11-300-48 20-72 Vdc 12 Vdc 1250mA GA12-125-48 20-72 Vdc 15 Vdc 1000mA GA13-100-48 20-72 Vdc 12Vdc 625mA GA22-125-48 20-72 Vdc 15Vdc 500mA GA23-100-48 Dimensions and Connections NOTES: 1. Ripple measured with a 3.3 mf tantalum capacitor across each output. 2. Load regulation from full load to minimum load (25%). 3. The GA series requires an external filter capacitor across the input valued at 33F @ 100Vdc, which must withstand 600ma of ripple current such as Sprague type 672D. 4. Metal case (shield) is connected to pin 1. External Output Trimming: Output may be externally trimmed 10%. PIN CONNECTIONS Single Output 1. +Input 2. -Input 3. No Pin 4. Remote On/Off 5. No Pin 6. +Output 7. Common 8. Trim 2 49 Range Road PIN CONNECTIONS dual Outputs 1. +Input 2. -Input 3. No Pin 4. Remote On/Off 5. +Output 6. Common 7. -Output 8. Trim Windham, NH 03087 Remote ON/Off Control (pin 4) common referenced to - Input (pin 2). On greater than 4 Vdc or open circuit Off less than 1.2 Vdc 11/01/2001 (603) 893-2330 FAX (603) 893-6280