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Features
Load current feedback
Programmable over current shutdown
Active clamp
E.S.D protection
Input referenced to Vcc
Over temperatue shutdown
Reverse battery protection
IR3310(S)
Data Sheet No.PD60181 Rev.E
Description
The IR 3310(S) is a Fully Protected 4 terminal high side switch.
The input signal is referenced to Vcc. When the input voltage
Vcc - Vin is higher than the specified Vih threshold, the output
power MOSFET is turned-on. When Vcc - Vin is lower than
the specified Vil threshold, the output MOSFET is turned-off.
A sense current proportional to the current in the power Mosfet
is sourced to the Ifb pin. Over-current shutdown occurs when
Vfb - Vin > 4.5 V. The current shutdown threshold is adjusted
by selecting the proper RIfb. Either over-current and over-tem-
perature latches off the switch. The device is reset by pulling
the input pin high. Other integrated protections ( ESD, reverse
battery, active clamp) make the IR 3310(S) very rugged and
suitable for the automotive environment.
Typical Connection
PROGRAMMABLE CURRENT SENSING HIGH SIDE SWITCH
Product Summary
R
ds(on)
7m
max.
V
cc.op.
6 to 28V
Current ratio
8800
I
shutdown
10 to 100A
Active clamp
35V
Load Dump
40V
Package
5 Lead TO220
IR3310
www.irf.com
1
VCC
OUT
IN
IR 3310
LOAD
Battery
Power
Ground
System
Ground
off
on
Ifb
10 k
RIfb
5 Lead
D
2
Pak (SMD220)
IR3310S
IR3310(S)
2
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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. (TAmbient = 25
o
C unless otherwise specified).
1) Limited by junction temperature. Pulsed current is also limited by wiring
2) <500 Ohm or shorting Ifb to gnd may damage the part with Isd around 120A
3) >5000 Ohm or leaving Ifb open will shutdown the part. No current will flow in the load.
Symbol
Parameter
Min.
Max.
Units
Vcc - Vin max
Maximum input voltage
-16
50
Vcc-VIfb max
Maximum Ifb voltage
-0.3
50
Vcc - Vout max.
Maximum output voltage
-0.3
33
Ids cont.
Diode max. permanent current (Rth = 60 C/W) (1)
--
2.8
Ids1 cont
Diode max. permanent current (Rth = 5 C/W) (1)
--
35
Ids pulsed
Diode max. pulsed current (1)
--
100
ESD 1
Electrostatic discharge (human body model)C=100pF, R=1500
--
4
ESD 2
Electrostatic discharge (machine model)C=200pF, R=0
,
L=10
H
--
0.5
Pd
Power dissipation ( Rth = 60 C/W )
--
2
W
TJ max.
Max. storage and junction temperature
-40
150
C
Min RIfb
Minimum resistor on the Ifb pin
0.3
--
k
Ifb max
Max. Ifb current
-20
+20
mA
V
A
kV
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.
Units
Vcc -Vin
Continuous input voltage
6
28
Vcc -VIfb
Continuous Ifb pin voltage
0.3
28
Vcc
Supply to power ground voltage
6
28
Iout
Continuous output
current ( Rth/amb < 5 C/W, Tj = 125C)
--
23
Iout 85C amb.
Continuous output
current ( Rth/amb < 60 C/W, Tj = 125C)
-- 6.5
RIfb
Ifb resistor to program Isd and scale (2 & 3)
0.5
3.5
k
Pulse min.
Minimum turn-on pulse width
1
--
ms
Fmax
Maximum operating frequency
--
500
Fmax Prot.
Maximum frequency with protections activated
--
200
V
A
Hz
Thermal Characteristics
Symbol
Parameter
Typ.
Max.
Units
Rth 1
Thermal resistance junction to Ambient - TO220
60
--
Rth 2
Thermal resistance junction to case - TO220
0.7
--
Rth 1
Thermal resistance with standard footprint - SMD220
60
--
Rth 2
Thermal resistance with 1" square footprint - SMD220
35
--
Rth 3
Thermal resistance junction to case - SMD220
0.7
--
C/W
IR3310(S)
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3
Static Electrical Characteristics
(Tj = 25
o
C, Vcc = 14V unless otherwise specified.)
Vout=12V
V
m
V
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Tdon
Turn-on delay time to Vcc-Vout= 0.9 Vcc
1
8
30
Tr1
Rise time to Vcc-Vout=5V
0.4
2
10
Tr2
Rise time to Vcc -Vout = 0.1Vcc
10
30
100
Eon
Turn ON energy
--
3
6
mJ
Tdoff
Turn-off delay to Vcc -Vout = 0.1Vcc
10
30
100
Tf
Fall time to Vcc-Vout = 0.9 Vcc
--
15
--
Eoff
Turn OFF energy
--
2
4
mJ
see figure 2
s
see figure 3
s
Switching Electrical Characteristics
Vcc = 14V, Resistive Load = 0.4
, T
j
= 25
o
C, (unless otherwise specified).
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) Rds(on) is measured between the Tab and the Out pin, 5mm away from the package.
Protection Characteristics
Tj = 25
o
C (unless otherwise specified), RIfb = 500 to 5kOhm.
Symbol
Parameter
Min.
Typ.
Max. Units
Test Conditions
VIfb -Vin
@ Isd
Over-current shutdown threshold
4
4.5
5.4
V
Tsd
Over-temp. shutdown threshold
-- 165 --
C
see Fig. 7
Treset
Protection reset time
--
50
300
S
see Fig. 7
OV
Over voltage shutdown (not latched)
33
36
41
V
Isdf
Fixed over current shutdown
100
120
140
A
VIfb<Vin
Isd_1k
Adjustable over current shutdown 1K
30
40
50
A
RIfb=1k
Min.Pulse
Minimum pulse width (no WAIT state)
200
500
1200
s
see Fig. 6
WAIT
WAIT function timer
0.5
1.2
3.5
m
s
see Figs. 6 and 7
Rev.Rdson Rds(on) reverse battery protection
4
6.2
10
m
Vcc-Vin=-12V, Iload=15
Symbol
Parameter
Min.
Typ.
Max. Units
Test Conditions
Iq
Total quiescent current (Iout +Ifb)
--
22
50
A
Vcc-Vin=0, Vcc-
Vcc-VIfb=12V
Iin
Input current
1.5
4
6
mA
Vcc-Vin=14V
Vih
High level input threshold voltage (4)
--
5
5.5
Vil
Low level input threshold voltage (4)
3.5
4
--
Vhys
Input hysterisis = Vih-Vil
0.4
1
1.5
Iout qs
Output quiescent current
--
9
15
A
Vcc-Vin=0; Vcc-VIfb=0;
Vcc-Vout=12V
Rds1 on
ON state resistance (5)
4
5.5
7
Iout=30A, Vcc-Vin=14V
Rds2 on
ON state resistance (5)
4
5.7
10
Iout=17A, Vcc -Vin=6V
Rds3 on
ON state resistance (5)
7
10.5
13.5
Iout=30A, Tj = 150
o
C
Vclamp1
Vcc to Vout active clamp voltage
33
35
--
Iout = 10mA
Vclamp2
Vcc to Vout active clamp voltage
--
36
40
Iout=30A,Vcc-VIfb<20V
Vsd
Body diode forward voltage
--
0.85
1
Iout=5A
Vaval.
Vcc to Vout avalanche voltage
40
43
50 Iout=100mA,Vcc-Vfb> 35V
IR3310(S)
4
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Functional Block Diagram
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Ratio
I load / IIfb current ratio
7,500
8,800
10,000
--
T
j
= 25
o
C ,Rfb = 500
,
I = 70A
Ratio_TC
Iload/Ifb variation over temperature
-5
0
+5
%
T
j
= -40 T
0
+150
o
C
offset
Load current diagnostic offset
-1.3
0
+1.3
A
I = 2A
Trst
Ifb response time (low signal)
--
5
15
s
90% of the I load step
Current Sense Characteristics
4mA
70V
33V
80
active clamp
disconnection
-
+
charge
pump
fast turn-off
driver
-
+
4V
reverse
battery
protection
Tj > 165 C
I out > 100 A
30V
IN
Ifb
OUT
VCC
On/Off
Set
Reset
latch
-
+
30V
Q
timer
1.5 ms
timer
300 us
36V
IR3310(S)
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5
Vcc
10 %
Td on
Tr1
Vcc-Vout
Vcc-Vin
90%
Tr2
DV/dt(on)
5V
Figure 1 - Voltages and currents definitions
Figure 2 - Switching time definitions (turn-on)
IR3310
Vcc-Vin
Vcc-Vin
max
Vcc-Vin1
max
Vcc-Vin (op)
Vih
Vil
Vhys
Iin
Iin
max
Iin1,2
Iin(on)
Vcc-Vout
Vcc-Vout
max
Vclamp1
Vclamp2
Iout
Iout
max
-Ids
cont.
-Ids
pulsed
Iout
85C
Isd
Iq
Vcc
In
Out
Ifb
VIfb
Ifb
Lead Assignments
Part Number
1 2 3 4 5
5 Lead - TO220
IR3310
3 (Vcc)
5 Lead - D
2
PAK (SMD220)
IR3310S
3 (Vcc)
1 2 3 4 5
1 - In
2 - Ifb
3 - Vcc (tab)
4 - NC
5 - Out
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