SI4700DY

Si4700DY New Product www.DataSheet4U.com Vishay Siliconix Power Selector Switch FEATURES D MOSFETs Configured To Give Spdt Switch With One Control Input D 2.5- to 8-V Ground Referenced Control Input D 30-mW Main Switch On-Resistance D 70-mW Alternate Switch On-Resistance D SOIC-8 Package D 3000-V ESD Protection On Control Input D Zero Power Consumption In Alternate Power Mode APPLICATIONS D ACPI Power Switching In Desktop Computers DESCRIPTION The Si4700DY consists of two MOSFETs configured for use as a single-pole, double-throw (SPDT) switch. A single ground referenced input, controls which switch is on. The Si4700DY is intended for use in applications where two power sources are available and the circuit must select one of the two depending on the conditions. An example of such a circuit is ACPI implementation in computers where part of a circuit must switch to an “always-on” power supply when the computer is in suspend mode, but runs off the main power supply for normal operation. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION 4 VS2 RG VG 3 VS1 8 Q1 5, 6, 7 VD Q2 CO 1 ON/OFF Q3 2 GND Document Number: 71110 S-00025—Rev. A, 24-Jan-00 Load www.vishay.com S FaxBack 408-970-5600 2-1 Si4700DY Vishay Siliconix www.DataSheet4U.com New Product ABSOLUTE MAXIMUM RATINGS (TA = 25_C UNLESS OTHERWISE NOTED) Parameter Drain-Source Voltage Logic Control Input Continuous Drain Currenta Pulsed Drain Currentb Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Symbol VDS VIN ID IDM 10 sec 12 –12 8...