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IRF7494 Datasheet(PDF) 5 Page - International Rectifier

Part No. IRF7494
Description  HEXFET Power MOSFET
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Maker  IRF [International Rectifier]
Homepage  http://www.irf.com
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IRF7494
www.irf.com
5
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case
Fig 10a. Switching Time Test Circuit
VDS
90%
10%
VGS
td(on)
tr
td(off) tf
Fig 10b. Switching Time Waveforms
VDS
Pulse Width ≤ 1 µs
Duty Factor ≤ 0.1 %
RD
VGS
RG
D.U.T.
10V
+
-V
DD
Fig 9. Maximum Drain Current vs.
Ambient Temperature
25
50
75
100
125
150
175
TA , Ambient Temperature (°C)
0
1
2
3
4
5
6
1E-006
1E-005
0.0001
0.001
0.01
0.1
1
10
100
t1 , Rectangular Pulse Duration (sec)
0.01
0.1
1
10
100
0.20
0.10
D = 0.50
0.02
0.01
0.05
SINGLE PULSE
( THERMAL RESPONSE )
Notes:
1. Duty factor D =
t / t
2. Peak T = P
x Z
+ T
1
2
J
DM
thJA
A
P
t
t
DM
1
2




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