FDD6644/FDU6644
30V N-Channel PowerTrench MOSFET
General Description
Features
This N-Channel MOSFET has been designed
specifically to improve the overall efficiency of DC/DC
converters using either synchronous or conventional
switching PWM controllers. It has been optimized for
low gate charge, low RDS(ON) and fast switching speed.
• 67 A, 30 V.
RDS(ON) = 8.5 mΩ @ VGS = 10 V
RDS(ON) = 10.5 mΩ @ VGS = 4.5 V
• High performance trench technology for extremely
low RDS(ON)
Applications
• Low gate charge (25 nC typical)
• DC/DC converter
• High power and current handling capability
D
D
G
S
D-PAK
TO-252
(TO-252)
I-PAK
(TO-251AA)
G D S
Absolute Maximum Ratings
Symbol
G
S
TA=25oC unless otherwise noted
Ratings
Units
VDSS
Drain-Source Voltage
Parameter
30
V
VGSS
Gate-Source Voltage
±16
V
ID
Drain Current
67
A
– Continuous
(Note 1a)
– Pulsed
PD
100
Maximum Power Dissipation
(Note 1)
(Note 1a)
3.8
1.6
(Note 1b)
TJ, TSTG
W
68
-55 to +175
°C
(Note 1)
2.2
°C/W
(Note 1b)
96
°C/W
Operating and Storage Junction Temperature Range
Thermal Characteristics
RθJC
Thermal Resistance, Junction-to-Case
RθJA
Thermal Resistance, Junction-to-Ambient
Package Marking and Ordering Information
Device Marking
Device
Package
Reel Size
Tape width
Quantity
FDD6644
FDD6644
D-PAK (TO-252)
13’’
12mm
2500 units
FDU6644
FDU6644
I-PAK (TO-251)
Tube
N/A
75
2001 Fairchild Semiconductor Corporation
FDD/FDU6644 Rev C(W)
FDD6644/FDU6644
April 2001
TA = 25°C unless otherwise noted
Drain–Source Diode Characteristics and Maximum Ratings
IS
VSD
Maximum Continuous Drain–Source Diode Forward Current
Drain–Source Diode Forward
VGS = 0 V, IS = 2.7 A
Voltage
3.2
0.7
(Note 2)
A
1.2
V
Notes:
1. RθJA is the sum of the junction-to-case and case-to-ambient thermal resistance where the case thermal reference is defined as the solder mounting surface of
the drain pins. RθJC is guaranteed by design while RθCA is determined by the user's board design.
a) RθJA = 40°C/W when mounted on a
1in2 pad of 2 oz copper
b) RθJA = 96°C/W when mounted
on a minimum pad.
Scale 1 : 1 on letter size paper
2. Pulse Test: Pulse Width < 300µs, Duty Cycle < 2.0%
3. Maximum current is calculated as:
PD
R DS(ON)
where PD is maximum power dissipation at TC = 25°C and RDS(on) is at TJ(max) and VGS = 10V. Package current limitation is 21A
FDD/FDU6644 Rev C(W)
FDD6644/FDU6644
Electrical Characteristics (continued)
