Automotive grade
AUIR3240S
LOW QUIESCENT CURRENT MOSFET DRIVER
Features
•
•
•
•
•
•
•
Very low quiescent current on state
Boost converter with integrated diode
Standard level gate voltage
Wide operating voltage 4-36V
Temperature monitoring with NTC interface
Lead-Free, Halogen Free, RoHS compliant
Battery switch for Stop and Start system
Product Summary
Operating voltage 4-36V
Vgate 11.5V min.
Iqcc On 50µA max.
Package
Applications
Description
The AUIR3240S is a high side mosfet driver for battery
switch application where a very low quiescent current is
required when the driver is on. The AUIR3240S is a
combination of a boost DC/DC converter using an external
inductor and a gate driver. It drives standard level Mosfet
even at low battery voltage. The input is active low to
reduce current consumption.
SO8
Typical Connection
Main Battery
Loads
NTC
NTC
Rs Ntc
V DG IN
R Ntc
NTC EN
GATE
Cout
VCC
SW
500µH
/IN
Rin
RS
Current measurement
Rs
GND
1
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AUIR3240S
Qualification Information
†
Qualification Level
Automotive
††
(per AEC-Q100 )
Comments: This family of ICs has passed an Automotive
qualification. IR’s Industrial and Consumer qualification level
is granted by extension of the higher Automotive level.
MSL2, 260°C
(per IPC/JEDEC J-STD-020)
Moisture Sensitivity Level
SOIC-8L
Class M0 (+/-50V)
(per AEC-Q100-003)
Class H0 (+/-50V)
ESD
Human Body Model
(per AEC-Q100-002)
Class C4 (+/-1000V)
Charged Device Model
(per AEC-Q100-011)
IC Latch-Up Test
Yes
RoHS Compliant
Yes
† Qualification standards can be found at International Rectifier’s web site
http://www.irf.com/
†† Exceptions to AEC-Q100 requirements, if any, are noted in the qualification report.
Machine Model
2
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AUIR3240S
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters
are referenced to Ground lead. (Tambient=25°C unless otherwise specified).
Symbol
Vcc-gnd
Vgate-Vsw
Vsw-gnd
Vrs-gnd
Vntc
Vntc_en
Vin
Isw
Tj max.
Parameter
Maximum Vcc voltage
Maximum Vgate-Vsw voltage
Maximum Sw voltage
Maximum Rs voltage
Maximum Ntc voltage
Maximum NTC_EN voltage
Maximum IN pin voltage
Maximum continuous current in SW pin
Max. storage & operating temperature junction temperature
Min.
-0.3
-1
-0.3
-0.3
-0.3
-0.3
-0.3
Max.
65
65
65
6
65
6
6
200
150
Units
V
-40
mA
°C
Thermal Characteristics
Symbol
Rth
Parameter
Thermal resistance junction to ambient
Typ.
100
Max.
Units
°C/W
Recommended Operating Conditions
Symbol
VIH
VIL
Rs NTC
Rin
Parameter
High level input voltage
Low level input voltage
Serial NTC resistor
Input resistor
Min.
2.5
0
4
4
Max.
5.5
0.9
10
10
Units
V
kΩ
3
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AUIR3240S
Static Electrical Characteristics
Tj=-40..125°C, Vcc=6..16V (unless otherwise specified), typical value are given for Vcc=14V and Tj=25°C.
Symbol
Vcc op.
Iq Vcc Off
Iq Vcc On
Iq gate On
Vbr gate
OV
Iin
Vin th
Vgs th
Vrs th
Parameter
Operating voltage range
Supply current when Off, Tj=25°C
Supply current when Off, Tj=125°C
Supply current when On, Tj=25°C
Supply current when On, Tj=125°C
Quiescent current on Gate, Tj=25°C
Quiescent current on Gate, Tj=125°C
Breakdown voltage between and Vcc
Over-voltage protection
Input current
IN threshold voltage
Gate output threshold
Rs threshold, Tj=-40°C
Rs threshold, Tj=25°C
Rs threshold, Tj=125°C
Rdson of K1, Tj=-40°C
Rdson of K1, Tj=25°C
Rdson of K1, Tj=125°C
Rdson of K2, Tj=-40°C
Rdson of K2, Tj=25°C
Rdson of K2, Tj=125°C
Forward voltage of rectifier diode
Quiescent current in NTC
Out Ntc current R ntc=7k, Vdg in=5V
NTC_EN threshold voltage
Current ratio between NTC_EN and NTC
Min.
4
Typ.
Max.
36
120
200
10
10
20
40
20
60
65
2.5
13.5
1.3
1.2
1.2
13
15
20
30
35
55
1
1
Units
V
Test Conditions
See page 10
Vin=5V, NTC_EN=0V
K1 off, K2 on
Vin=0V, NTC_EN=0V
K1 off, see page 8
Vin=0V, Vgate=14V
K1 off, see page 8
I=10mA
Vin=5V
Igate=0µA
15
50
1
11.5
0.9
0.85
0.75
Rdson K1
Rdson K2
Vf
Iq ntc
I Ntc
Vth_ntc_en
I ratio ntc
85
110
2
3
6
12
17
55
30
2
12.5
1.1
1
0.95
8
11
15
20
25
40
0.7
0.1
1
1.5
2.05
µA
V
µA
V
I=100mA
Ω
V
µA
mA
V
1.15
1.9
1.9
2.2
I=100mA
V NTC=16V,
Vntc_en=0V
Vntc>6V
I=500µA
Vntc>6V
Timing Converter Characteristics
Tj=-40..125°C, Vcc=6..16V (unless otherwise specified), typical value are given for Vcc=14V and Tj=25°C.
Symbol
Toff
Tdon K1
Tdoff K1
Parameter
Off time
Turn-on delay of K1
Turn-off delay of K1
Min.
5
Typ.
7.5
0.2
10
Max.
10
Units
µs
Test Conditions
Switching Characteristics
Tj=-40..125°C, Vcc=6..16V (unless otherwise specified), typical value are given for Vcc=14V and Tj=25°C.
Symbol
Tdon K2
Tf K2
Iout- K2
Parameter
Turn-on delay of K2
Fall time of K2 90% to 10% of Vgate-Vcc
Gate low short circuit pulsed current
Min.
1
Typ.
2.5
6
350
Max.
4
20
Units
µs
mA
Test Conditions
C=100nF
Vgate=14V
100
4
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October 21, 2013
AUIR3240S
Lead Definitions
Pin number
1
2
3
4
5
6
7
8
Symbol
NTC
NTC_EN
/IN
GND
RS
SW
VCC
GATE
Description
An NTC resistor can be connected between this pin and the Vcc line close to the tab
to sense the temperature of the Mosfet
NTC_EN is the input of the NTC system.
Active low input pin to enable the boost converter or short the gate to Vcc
Ground pin
Current sense input pin
Output of K1
Power supply
Output of the boost converter
Lead Assignments
8765
1234
SO8
1- NTC
2- NTC_EN
3- /IN
4- GND
5- RS
6- SW
7- VCC
8- GATE
5
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October 21, 2013
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