irfs644b Fairchild Semiconductor, irfs644b Datasheet - Page 3

• Manufacturer Part Number: irfs644b
• Description: 250v N-channel Mosfet
• Manufacturer: Fairchild Semiconductor

©2001 Fairchild Semiconductor Corporation
Typical Characteristics
3500
3000
2500
2000
1500
1000
500
10
1.5
1.2
0.9
0.6
0.3
0.0
10
10
0
-1
10
1
0
10
0
Figure 5. Capacitance Characteristics
-1
-1
Figure 3. On-Resistance Variation vs
Top :
Bottom :
Figure 1. On-Region Characteristics
Drain Current and Gate Voltage
10.0 V
15.0 V
8.0 V
7.0 V
6.5 V
6.0 V
5.5 V
5.0 V
V
GS
10
V
V
DS
DS
, Drain-Source Voltage [V]
, Drain-Source Voltage [V]
I
10
10
D
, Drain Current [A]
0
0
20
C
C
C
oss
rss
iss
V
V
GS
GS
= 10V
= 20V
30
C
C
C
 Notes :
iss
oss
rss
1. 250 s Pulse Test
2. T
10
10
= C
= C
= C
 Note : T
1
1
C
gs
gd
ds
= 25
+ C
+ C
40
 Notes :
gd
gd
1. V
2. f = 1 MHz
(C
J
ds
GS
= 25 
= shorted)
= 0 V
50
10
10
10
10
10
10
12
10
8
6
4
2
0
-1
-1
1
0
1
0
0.2
0
2
Figure 4. Body Diode Forward Voltage
Figure 6. Gate Charge Characteristics
Figure 2. Transfer Characteristics
150
25
5
0.4
o
Variation with Source Current
o
C
C
150
10
0.6
4
V
V
15
and Temperature
Q
25
GS
SD
G
, Gate-Source Voltage [V]
, Source-Drain voltage [V]
, Total Gate Charge [nC]
0.8
-55
V
20
DS
o
C
= 200V
V
DS
= 125V
1.0
25
V
6
DS
= 50V
30
1.2
35
 Notes :
 Notes :
1. V
2. 250 s Pulse Test
1. V
2. 250  s Pulse Test
1.4
 Note : I
8
DS
GS
= 40V
= 0V
40
D
= 14 A
1.6
45
Rev. A, November 2001
1.8
10
50