IR3312;IR3312S;IR3312STRL;IR3312STRR;中文规格书,Datasheet资料

Features
•Load current feedback
•Programmable over current shutdown •Active clamp •E.S.D protection
•Input referenced to Vcc •Over temperatue shutdown •
Reverse battery protection
IR3312(S)
Data Sheet No.PD60211 rev.D
Description
The IR 3312(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
suitable for the automotive environment.
Typical Connection
PROGRAMMABLE CURRENT SENSING HIGH SIDE SWITCH
Product Summary
R ds(on)20m ΩV cc.op. 6 to 28V Current ratio 2800I shutdown 3 to 30A Active clamp 35V Load Dump 40V
1
IR3312(S)
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. (T
= 25o 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 37A
3) >5000 Ohm or leaving Ifb open will shutdown the part. No current will flow in the load.
Recommended Operating Conditions
These values are given for a quick design. For operation outside these conditions, please consult the application notes.
IR3312(S)
3
Switching Electrical Characteristics
V cc = 14V, Resistive Load = 0.4Ω, T j = 25o C, (unless otherwise specified).
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 = 25o 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 5.4V Tsd Over-temp. shutdown threshold — 165 —°C see Fig. 7
Treset Protection reset time
—50300µS see Fig. 7OV Over voltage shutdown (not latched)333641V Isdf Fixed over current shutdown
303745A VIfb<Vin Isd_1k Adjustable over current shutdown 1K 91216A RIfb=1k Min.Pulse Minimum pulse width (no WAIT state)2005001200µs see Fig. 6
WAIT
WAIT function timer
0.5 1.2 3.5m s
see Figs. 6 and 7
Rev.Rds on Rds(on) reverse battery protection
10
16
28
m Ω Vcc-Vin=-12V, Iload=5A
Static Electrical Characteristics
o
IR3312(S)
4
Symbol Parameter
Min.
Typ.
Max. Units Test Condition s
Ratio
I load / IIfb current ratio
2,4002,8003,300—T j = 25o C ,Rfb = 500Ω,I = 30A
Ratio_TC Iload/Ifb variation over temperature -50+5%T j = -40 T 0 +150o C offset Load current diagnostic offset -0.4500.45A I = 2A
Trst Ifb response time (low signal)
—
5
15
µs
90% of the I load step
Current Sense Characteristics
IN
Ifb OUT
IR3312(S)
5
Figure 1 - Voltages and currents definitions Figure 2 - Switching time definitions (turn-on)
Vil Iin Iin Lead Assignments
IR3312(S)
Figure 3 - Switching time definitions (turn-off)Figure 4 - Active clamp waveforms
Figure 5 - Current sense precision:
Accurate measurement only when the power Mosfet is fully ON
Figure 6 - Minimum pulse & WAIT
function
Precise measurement
IR3312(S)
7
Figure 9- Rds on (m Ω) vs Vcc-Vin (V)
Figure 8 - Icc (mA) vs Vcc-Vin (V)
02468100
5
10
15
20
25
30
IR3312(S)
Figure 10 -Normalized Rdson (%) vs Tj (o C) Figure 11 - Vih, Vil & Vifb -Vin (V) vs Tj (o C)
Figure 12 - Error (+/-A) vs Iload (A)
Figure 13 - Isd (A) vs RIfb (Ohm)
0%20%40%60%80%100%120%140%160%180%200%-50-25
25
50
75100125150
0123456-50
-25
25
50
75
100125150
1 20
15 30
3
4 110
100
100
1000
10000
IR3312(S)
9
Figure 16 - I out (A) vs Protection resp. Time (s)
Figure 17 - Rth (o C/W) vs Time (s)
Figure 14 - Max. DC current (A) vs T emp. (°C)
Figure 15 - Max. I (A) vs inductance (mH)
110
100
1E-050.0001
0.001
0.01
0.1
1
10
100
1000
分销商库存信息:
IR
IR3312IR3312S IR3312STRL IR3312STRR。