
FEATURES
TrenchFET Power MOSFET
New Low Thermal Resistance PowerPAK
Dual MOSFET for Space Savings
PWM Optimized for Fast Switching
Avalanche Rated
Package
APPLICATIONS
Primary Side Switch
Si7946DP
Vishay Siliconix
New Product
Document Number: 72282
S-31361—Rev. A, 30-Jun-03
www.vishay.com
1
Dual N-Channel 150-V (D-S) MOSFET
PRODUCT SUMMARY
V
DS
(V)
r
DS(on)
( )
I
D
(A)
150
0.150 @ V
GS
= 10 V
0.168 @ V
GS
= 6 V
3.3
3.1
N-Channel MOSFET
D
1
G
1
S
1
N-Channel MOSFET
D
2
G
2
S
2
1
2
3
4
5
6
7
8
S1
G1
S2
G2
D1
D1
D2
D2
6.15 mm
5.15 mm
Bottom View
PowerPAK SO-8
Ordering Information:
Si7946DP-T1
ABSOLUTE MAXIMUM RATINGS (T
A
= 25 C UNLESS OTHERWISE NOTED)
Parameter
Symbol
10 secs
Steady State
Unit
Drain-Source Voltage
V
DS
150
V
Gate-Source Voltage
V
GS
20
Continuous Drain Current
(T
J
= 150 C)
a
T
A
= 25 C
I
D
3.3
2.1
T
A
= 70 C
2.6
1.7
Pulsed Drain Current
I
DM
10
A
Continuous Source Current (Diode Conduction)
a
I
S
2.9
1.2
Single Avalanche Current
L = 0.1 mH
I
AS
9
Single Avalanche Energy
E
AS
4
mJ
Maximum Power Dissipation
a
T
A
= 25 C
P
D
3.5
1.4
W
T
A
= 70 C
2.2
0.9
Operating Junction and Storage Temperature Range
T
J
, T
stg
-55 to 150
C
THERMAL RESISTANCE RATINGS
Parameter
Symbol
Typical
Maximum
Unit
Maximum Junction-to-Ambient
t A bi
a
t
10 sec
R
thJA
26
35
Steady State
60
85
C/W
Maximum Junction-to-Case (Drain)
Steady State
R
thJC
3.2
4.2
Notes
a.
Surface Mounted on 1” x 1” FR4 Board.