Automotive grade
AUIR3320S
LOW EMI CURRENT SENSE HIGH SIDE SWITCH
Features
Load current feedback
Programmable over current shutdown
Active clamp
ESD protection
Input referenced to Vcc
Over temperature shutdown
Switching time optimized for low EMI
Reverse battery protection
Lead-Free, Halogen-Free, RoHS compliant
Product Summary
Rds(on)
4 m max.
Vcc op.
6 to 26V
Current Ratio
6000
Prog. Ishutdown 10 to 55A
Vclamp
40V
Packages
Description
The AUIR3320(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.
D²Pak
Pin 4 and 5 fused
AUIR3320S
Ordering Information
Base Part Number
AUIR3320S
Standard Pack
Package Type
Form
D2-Pak-5-Leads
Tape and reel left
Quantity
800
AUIR3320STRL
Complete Part Number
1
2017-07-11
AUIR3320S
Typical Connection
Vcc
In
Current feedback
10k
AUIR3320S
Battery
Ifb
Out
Input
On
Off
OR
*
Logic
Ground
Rifb
Load
Power
Ground
*The diode between the collector and the emitor is necessary for the reverse battery protection
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AUIR3320S
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters
are referenced to Vcc lead. (Tj=-40°..150°C, Vcc=6.26V Tambient=25°C unless otherwise specified).
Symbol
Vcc-Vin
Vcc-Vin cont.
Vcc-Vfb
Vcc-Vout
Ids cont.
Ids pulsed
Pd
Parameter
Min.
-16
-16
-16
-0.3
Max.
37
26
33
37
2.8
100
2
150
150
Units
V
Maximum Vcc voltage
Maximum continuous Vcc voltage
Maximum Ifb voltage
Maximum output voltage
Maximum body diode continuous current Rth=60°C/W (1) Tambient=25°C
Maximum body diode pulsed current (1)
Maximum power dissipation Rth=60°C/W Tambient=25°C
Maximum operating junction temperature
Tj max.
Maximum storage temperature
Min Rfb
Minimum on the resistor on Ifb pin
Ifb max.
Max. Ifb current
(1) Limited by junction temperature. Pulsed is also limited by wiring
A
W
°C
k
mA
-40
-55
0.3
-50
50
Thermal Characteristics
Symbol
Rth1
Rth2
Rth3
Parameter
Thermal resistance junction to ambient D²-Pak Std footprint
Thermal resistance junction to ambient D²-Pak 1” sqrt. footprint
Thermal resistance junction to case D²-Pak
Typ.
60
40
0.7
Max.
Units
°C/W
Recommended Operating Conditions
These values are given for a quick design. For operation outside these conditions, please consult the application notes.
Symbol
Parameter
Min.
Max.
45
16
3.5
Units
A
k
ms
Hz
Continuous output current
Iout
Tambient=85°C, Rth=5°C/W, Tj=150°C
Tambient=85°C, Rth=40°C/W, Tj=150°C
Rifb
Recommended Ifb resistor (2)(3)
Pulse min.
Minimum turn-on pulse width
Fmax.
Maximum operating frequency
(2) If Rifb is too low, the device can be damaged.
(3) If Rifb is too high, the device may not switch on.
0.3
1
200
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2017-7-11
AUIR3320S
Protection Characteristics
Tj=-40°..150°C, Vcc=6..26V, Rifb=500 to 3.5k. Typical value are given for Vcc=14V and Tj=25°C
Symbol
Vifb-Vin@Isd
Tsd
OV
Isdf
Isd_560
Treset
Min. pulse
WAIT
Rds(on) rev.
Parameter
Over-current shutdown threshold
Over temperature threshold
Over voltage protection (not latched)
Fixed over current shutdown
Programmable over current shutdown
Time to reset protection
Min. pulse width (no WAIT state)
WAIT function timer
Reverse battery On state resistance,
Tj=25°C
Tj=125°C
Min.
3.8
Typ.
4.7
165
29
75
50
50
900
1
4
6
Max.
5.9
Units
V
°C
V
A
µs
ms
m
Test Conditions
See fig. 5
Vifb<Vifb-Vin@Isd
Rifb=560
See fig. 5
Tj=25°C
See fig. 4 and 5
Vcc-Vin=-14V,
Iout=30A
26
55
34
0.4
33
105
71
500
2000
2
6
9
Static Electrical Characteristics
Tj=-40°..150°C, Vcc=6..26V (unless otherwise specified). Typical value are given for Vcc=14V and Tj=25°C
Symbol
Vcc op.
Icc off
Iin, on
Vih
Vil
Vhyst
Iout
Parameter
Operating Voltage range
Supply leakage current
On state IN positive current
High level Input threshold voltage (4)
Low level Input threshold voltage (4)
Input hysteresis Vih-Vil
Drain to source leakage current
Min.
6
Typ.
Max.
26
5
6
6.3
5.8
1.5
5
Units
V
µA
mA
V
µA
Test Conditions
Vin=Vcc, Vcc-Vout=14V,
Vcc-Vifb=14V, Tj=25°C
Vcc-Vin=14V, Tj=25°C
1.5
3
5.4
4.9
0.4
1.2
1.5
4
0.2
Vin=Vcc, Vcc-Vifb=0V,
Vcc-Vout=14V, Tj=25°C
On state resistance (5) Tj=25°C
3.3
4
Iout=30A, Vcc-Vin=14V
Rds(on)
On state resistance (5) Tj=25°C
3.5
5.5
Iout=17A, Vcc-Vin=6V
m
On state resistance (5)(6) Tj=150°C
5.5
6.5
Iout=30A, Vcc-Vin=14V
V clamp1
Vcc to Vout clamp voltage 1
36
39
43
Iout=50mA
V
V clamp2
Vcc to Vout clamp voltage 2
40
Iout=30A, Tj=25°C
(4) Input thresholds are measured directly between the input pin and the tab. Any parasitic resistance in common between
the load current path and the input signal path can significantly affect the thresholds.
(5) Rdson is measured between the tab and the Out pin, 5mm away from the package.
(6) Guaranteed by design
Switching Electrical Characteristics
Vcc=14V, Resistive load=0.5, Tj=25°C
Symbol
Tdon
tr1
tr2
Eon
Tdoff
Tf
Eoff
Parameter
Turn on delay time to 10% Vcc
Rise time to Vcc-Vout=5V
Rise time to Vcc-Vout=0.1Vcc
Turn on energy
Turn off delay time
Fall time to Vout=10% of Vcc
Turn off energy
Min.
70
30
30
Typ.
170
100
125
15
70
100
9
Max.
300
210
250
Units
µs
mJ
µs
mJ
Test Conditions
See figure 2
30
20
140
250
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2017-7-11
AUIR3320S
Current Sense Characteristics
Tj=-40°..150°C, Vcc=6..26V (unless otherwise specified). Typical value are given for Vcc=14V and Tj=25°C
Symbol
Ratio
Ratio_TC
Offset
Trst
Parameter
I Load/Iifb current ratio
I Load/Iifb variation over temperature (6)
Load current diagnostic offset
Ifb response time (low signal)
Min.
4900
-4
-0.4
Typ.
6000
Max.
6600
+4
+0.4
Units
Test Conditions
Rifb=500, Iout=30A
Tj=-40°C to 150°C
Iout=2A
90% of the Iout step
0
1
%
A
µs
Functional Block Diagram
All values are typical
VCC
Charge
Pump
Driver
On/Off
Fast turn-off
43V
38V
43V
3mA
+
-
+
-
Reset
Set
29V
Q
43V
Latch
Wait
timer
1 ms
4.7V
timer
900µs
80
-
+
-
+
Iout > 75A
Tj > 165°C
Min. Pulse
reverse
battery
protection
IN
IFB OUT
5
2017-7-11
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