SI4700DY

Transistor Polarity :
Drain-Source Breakdown Voltage :
Gate-Source Breakdown Voltage :
Continuous Drain Current :
Resistance Drain-Source RDS (on) :
Configuration :
Maximum Operating Temperature :
Packaging :
Mounting Style : SMD/SMT
Package / Case : SOIC-8


Features:

· MOSFETs Configured To Give Spdt Switch
  With One Control Input
· 2.5- to 8-V Ground Referenced Control Input
· 30-m· Main Switch On-Resistance
· 70-m· Alternate Switch On-Resistance
· SOIC-8 Package
· 3000-V ESD Protection On Control Input
· Zero Power Consumption In Alternate Power Mode


Application

ACPI Power Switching In Desktop Computers


Specifications

Parameter		Symbol	10 sec	Steady State	Unit
Drain-Source Voltage	Q1	VDS	12		V
	Q2		-12
Logic Control Input		VIN	8
Continuous Drain Current (TJ = 150°C)a	Q1	ID	7.6	5.3	A
	Q2		5.0	3.5
Pulsed Drain Current(10 s Pulse Width)	Q1	IDM	20
	Q2		20
Continuous Source Current (Diode Conduction)a	Q1	IS	2.1	1.15
	Q2		2.1	1.15
Maximum Power Dissipationa		PD	2.35	1.25	W
Operating Junction and Storage Temperature Range		TJ, Tstg	55 to 150		°C
ESD Voltagec		ESD	3		KV

Notes
a. Surface mounted on 1" x1" FR4 board.
b. Pulse test: pulse width 300 S, duty cycle2%.
c. Equivalent to MIL-STD-883D Human Body Model (100 pF, 1500 )


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.