GS2TX-9A

GS2TX-9A 2 W LAN DC-DC CONVERTER Type GS2TX-9A Vi 4,5 to 15,75 V Vo –9V Io – 250 mA DESCRIPTION The GS2TX-9A is a 2.25W unregulated DC-DC converter designed to provide power, voltage regulation and isolation for Local Area Network (CHEAPERNET and ETHERNET) transceivers from a wide range of input voltage, according to IEEE 802.3 Standard. An internal network is added to guarantee soft start at switch-on. ELECTRICAL CHARACTERISTICS (Tamb.= 25° C unless otherwise specified) Symbol Vi Iir lir Vo Vor Vor δVOL δVOO Io Vis η η Top Tstg Parameter Input Voltage Input Reflected Current Input Reflected Current Output Voltage Output Ripple Voltage Output Ripple Voltage Line Regulation Load Regulation Output Current* Isolation Voltage Efficiency Efficiency Operating Ambient Temperature Range Storage Temperature Range Vi = 5V Vi = 12V Io = – 250mA Io = – 250mA Vo = 9V Vi = 5V Vo = – 9V Vi = 12V Vo = – 9V Vi = 4.5 to 15.75V Io = 0 to – 250mA Vi = 5V Vi = 12V Vi = 4.5 to 5.5V Vi = 4.5 to 15.75V Vi = 4.5 to 15.75V Io = – 250mA Io = – 250mA Io = – 250mA Io = – 20 to – 250mA Vo = – 9V 0 2500 70 75 0 – 40 73 80 +70 +85 Test Conditions Io = 0 to – 250mA Io = – 250mA Io = – 250mA – 8.55 2 – 9.00 7 2 5 – 9.45 10 5 5 5 – 250 mApp V mVRMS mVRMS mV mV mA VDC % % °C °C Min 4.5 25 Typ Max 15.75 30 Unit V mApp * When the input voltage is <5V and the output current is less than 20mA, the output ripple voltage increases due to discontinuous operation. April 1997 1/2 GS2TX-9A CONNECTION DIAGRAM AND M...