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The IR3314(S)PbF 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 Vst-Vin > 4.5V. 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.
IR3314PBF Maximum Ratings
Symbol
Parameter
Min
Max.
Units
Vcc-Vin
Maximum Vcc voltage
-16
37
V
Vcc-Vin cont.
Maximum continuous Vcc voltage
-16
32
Vcc-Vfb
Maximum Ifb voltage
-16
33
Vcc-Vout
Maximum output voltage
-0.3
37
Ids cont.
Maximum body diode continuous current Rth=60/W (1)
-
2.8
A
Ids pulsed
Maximum body diode pulsed current (1)
-
100
Pd
Maximum power dissipation Rth=60/W
-
2
W
ESD1
Electrostatic discharge voltage (Human body) C=100pF, R=1500
-
4
kV
ESD2
Electrostatic discharge voltage (Machine Model) C=200pF,R=0
-
0.5
Tj max.
Max. storage & operating temperature junction temperature
-40
150
Min Rfb
Minimum on the resistor on Ifb pin
0.3
-
k
Ifb max.
Max. Ifb current
-50
50
mA
(1) Limited by junction temperature. Pulsed is also limited by wiring
IR3314PBF Features
• Load current feedback • Programmable over current shutdown • Active clamp • ESD protection • Input referenced to Vcc • Over temperature shutdown • Reverse battery protection • Lead-Free