GS1T70-D540

GS1T70-D540/2 ISDN DC-DC CONVERTER PRELIMINARY DATA Type GS1T70-D540/2 Vi 28 to 115 V Vo out 1 : 5V Io 72 mA out 2 : 40V 12 mA FEATURES Wide operating line termination voltage Positive or negative input voltage polarity Input and output filtering Short-circuit protection on both outputs Input power during shortcircuit within specification Minimum current drain during stand-by condition: 10µA for Vi<18V Input-Output2 insulation voltage: 3000VRMS for 60 seconds Output1-Output2 insulation voltage: 3000VRMS for 60 seconds Mechanical dimensions (L x W x H): 50.8 mm x 50.8 mm x 18 mm (2" x 2" x 0.71") DESCRIPTION The GS1T70-D540/2 converter has been designed for the “U” interface of an ISDN-NTBA (Network Termination Basic Access) system with either 4B3T or 2B1Q standard trasmission. Two outputs, 5V/72mA and 40V/12mA are supplied. The converter offers short-circuit protection (shortcircuit on 40V output doesn’t affect 5V output and the input power never exceeds the limits of the specification), input either voltage polarity, 80% minimum efficiency at maximum load, input and output filtering to meet very stringent noise requirements. When the input voltage is below 18V, the converter offers a very high input impedance and a maximum quiescent current of 10µA according to the standard ETR 080. In addition, the wide operating input voltage range allows it to operate within the whole range of LT (Line Termination) battery voltage and its relevant line resistance. 3000VRMS isolation v...