FDMA7670 Fairchild Semiconductor, FDMA7670 Datasheet - Page 4

• Manufacturer Part Number: FDMA7670
• Description: This device has been designed to provide maximum efficiency and thermal performance for synchronous buck converters
• Manufacturer: Fairchild Semiconductor

©2012 Fairchild Semiconductor Corporation
FDMA7670 Rev.C4
Typical Characteristics
0.01
100
0.1
10
10
0.001
1
8
6
4
2
0
0.01
0.01
Figure 7.
0.1
0
2
1
10
I
D
SINGLE PULSE
T
R
T
J
A
θ
= 11 A
Figure 9.
-4
JA
= MAX RATED
THIS AREA IS
LIMITED BY r
= 25
= 145
DUTY CYCLE-DESCENDING ORDER
V
o
C
DS
D = 0.5
Gate Charge Characteristics
0.1
o
, DRAIN to SOURCE VOLTAGE (V)
C/W
5
Operating Area
0.2
0.1
0.05
0.02
0.01
V
Q
Forward Bias Safe
DD
g
DS(on)
, GATE CHARGE (nC)
10
= 10 V
V
DD
-3
= 20 V
10
1
V
DD
T
Figure 11.
J
= 15 V
= 25°C unless otherwise noted
10
SINGLE PULSE
R
10
15
θ
-2
JA
= 145
Transient Thermal Response Curve
t, RECTANGULAR PULSE DURATION (sec)
1 ms
10 ms
100 ms
10 s
DC
0.1 ms
1 s
o
C/W
100
20
10
-1
4
1000
3000
1000
100
0.1
100
10
10
1
1
10
0.1
-4
Figure 10.
Figure 8.
f = 1 MHz
V
GS
10
= 0 V
-3
V
DS
NOTES:
DUTY FACTOR: D = t
PEAK T
V
Power Dissipation
GS
to Source Voltage
, DRAIN TO SOURCE VOLTAGE (V)
10
Capacitance vs Drain
Single Pulse Maximum
= 10 V
10
t, PULSE WIDTH (sec)
-2
J
= P
1
10
DM
-1
x Z
P
θJA
DM
1
/t
1
x R
2
100
θJA
t
1
+ T
SINGLE PULSE
R
T
10
t
A
θ
2
JA
A
= 25
= 145
10
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o
100
C
C
C
C
iss
oss
rss
o
C/W
1000
1000
30