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FDB6670AS Datasheet PDF - Fairchild Semiconductor

Part Number FDB6670AS
Description 30V N-Channel PowerTrench SyncFET
Manufacturers Fairchild Semiconductor 
Logo Fairchild Semiconductor Logo 



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FDB6670AS datasheet, circuit
January 2005
FDP6670AS/FDB6670AS
30V N-Channel PowerTrench® SyncFET
General Description
This MOSFET is designed to replace a single MOSFET
and parallel Schottky diode in synchronous DC:DC
power supplies. This 30V MOSFET is designed to
maximize power conversion efficiency, providing a low
RDS(ON) and low gate charge. The FDP6670AS
includes an integrated Schottky diode using Fairchild’s
monolithic SyncFET technology. The performance of
the FDP6670AS/FDB6670AS as the low-side switch in
a synchronous rectifier is indistinguishable from the
performance of the FDP6670A/FDB6670A in parallel
with a Schottky diode.
Features
31 A, 30 V.
RDS(ON) = 8.5 m@ VGS = 10 V
RDS(ON) = 10.5 m@ VGS = 4.5 V
Includes SyncFET Schottky body diode
Low gate charge (28nC typical)
High performance trench technology for extremely
low RDS(ON) and fast switching
High power and current handling capability
DD
G
D
S
TO-220
FDP Series
G
S
TO-263AB
FDB Series
G
Absolute Maximum Ratings TA=25oC unless otherwise noted
Symbol
VDSS
VGSS
ID
Parameter
Drain-Source Voltage
Gate-Source Voltage
Drain Current – Continuous
– Pulsed
(Note 1)
PD
TJ, TSTG
TL
Total Power Dissipation @ TC = 25°C
Derate above 25°C
Operating and Storage Junction Temperature Range
Maximum lead temperature for soldering purposes,
1/8” from case for 5 seconds
Thermal Characteristics
RθJC Thermal Resistance, Junction-to-Case
RθJA Thermal Resistance, Junction-to-Ambient
Package Marking and Ordering Information
Device Marking
Device
Reel Size
FDB6670AS
FDB6670AS
13’’
FDB6670AS
FDB6670AS_NL (Note 3)
13’’
FDP6670AS
FDP6670AS
Tube
FDP6670AS
FDP6670AS_NL (Note 4)
Tube
Ratings
30
±20
62
150
62.5
0.5
–55 to +150
275
2.1
62.5
Tape width
24mm
24mm
n/a
n/a
S
Units
V
V
A
W
W/°C
°C
°C
°C/W
°C/W
Quantity
800 units
800 units
45
45
©2005 Fairchild Semiconductor Corporation
FDP6670AS/FDB6670AS Rev A(X)

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FDB6670AS equivalent
Typical Characteristics (continued)
SyncFET Schottky Body Diode
Characteristics
Fairchild’s SyncFET process embeds a Schottky diode
in parallel with PowerTrench MOSFET. This diode
exhibits similar characteristics to a discrete external
Schottky diode in parallel with a MOSFET. Figure 12
FDP6670AS.
TIME: 12.5ns/div
Figure 12. FDP6670AS SyncFET body
diode reverse recovery characteristic.
For comparison purposes, Figure 13 shows the reverse
recovery characteristics of the body diode of an
equivalent size MOSFET produced without SyncFET
(FDP6670A).
Schottky barrier diodes exhibit significant leakage at
high temperature and high reverse voltage. This will
increase the power in the device.
0.1
0.01
TA = 125oC
0.001
TA = 100oC
0.0001
0.00001
0
TA = 25oC
10 20
VDS, REVERSE VOLTAGE (V)
30
Figure 14. SyncFET diode reverse leakage
versus drain-source voltage and
temperature.
TIME: 12.5ns/div
Figure 13. Non-SyncFET (FDP6670A) body
diode reverse recovery characteristic.
FDP6670AS/FDB6670AS Rev A (X)

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Information Total 6 Pages
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