AO4450
TYPICAL ELECTRICAL AND THERMAL CHARACTERISTICS: N-CHANNEL
10
8
800
600
400
200
0
VDS=40V
ID= 6.6A
Ciss
6
Coss
4
Crss
2
0
0
10
20
DS (Volts)
30
40
0
2
4
6
8
10
Qg (nC)
V
Figure 7: Gate-Charge Characteristics
Figure 8: Capacitance Characteristics
40
100.0
10.0
1.0
RDS(ON)
limited
TJ(Max)=150°C
TA=25°C
10µs
30
20
10
0
100µs
1ms
0.1s
10ms
1s
10s
DC
TJ(Max)=150°C
TA=25°C
0.1
0.001
0.01
0.1
1
10
100
1000
0.1
1
10
100
Pulse Width (s)
VDS (Volts)
Figure 10: Single Pulse Power Rating Junction-to-
Ambient (Note E)
Figure 9: Maximum Forward Biased Safe
Operating Area (Note E)
10
1
D=Ton/T
In descending order
D=0.5, 0.3, 0.1, 0.05, 0.02, 0.01, single pulse
TJ,PK=TA+PDM.ZθJA.RθJA
RθJA=50°C/W
PD
0.1
Ton
T
Single Pulse
0.01
0.00001
0.0001
0.001
0.01
0.1
1
10
100
1000
Pulse Width (s)
Figure 11: Normalized Maximum Transient Thermal Impedance
Alpha & Omega Semiconductor, Ltd.