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December, 10th 2010
Automotive grade
AUIR3313(S)
www.irf.com
1
PROGRAMMABLE CURRENT SENSE HIGH SIDE SWITCH
Features
Load current feedback
Programmable over current shutdown
Active clamp
ESD protection
Input referenced to Vcc
Over temperature shutdown
Reverse battery protection
Lead Free, RoHS compliant
Description
The AUIR3313(S) is a fully protected 4 terminals high side
switch. The input signal is referenced to Vcc. When the
input voltage Vcc - Vin is higher than the specified
threshold, the output power Mosfet is turned on. When the
Vcc - Vin is lower than the specified Vil threshold, the
output Mosfet is turned off. A current proportional to the
power Mosfet current is sourced to the Ifb pin. Over
current shutdown occurs when Vifb-Vin > 4.7V. The
current shutdown threshold is adjusted by selecting the
proper RIfb. Either over current and over temperature
latches off the switch. The device is reset by pulling the
input pin high. Other integrated protections (ESD, reverse
battery, active clamp) make the switch very rugged in
automotive environment.
Product Summary
Rds(on) 7 m max.
Vcc op. 6 to 32V
Current Ratio 8800
Prog. Ishutdown 10 to 90A
Vclamp 40V
Packages
TO-220 D²Pak
AUIR3313 Pin 4 and 5 fused
AUIR3313S
Typical Connection
Out
AUIR3313
IN
Rifb
Vcc
Load
Battery
Input
Power
Ground
Ifb
Logic
Ground
Current feeback
10k
On
Off
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