FDMF6820B Fairchild Semiconductor, FDMF6820B Datasheet - Page 9

• Manufacturer Part Number: FDMF6820B
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FDMF6820B • Rev. 1.0.2
Typical Performance Characteristics
Test Conditions: V
unless otherwise specified.
Figure 16.
1.01
1.00
0.99
0.98
0.97
0.96
0.95
0.94
22
20
18
16
14
12
3.2
3.1
3.0
2.9
2.8
2.7
2.6
Figure 14.
Figure 12.
4.0
200
V
V
IN
IN
-55
= 12V, V
= 12V, V
250
Driver IC Junction Temperature, T
UVLO Threshold vs. Temperature
Driver Supply Voltage, V
OUT
DRV
0
4.5
Driver Supply Current vs. Driver
Power Loss vs. Output Inductor
IN
=12V, V
= 1V, F
& V
Output Inductor, L
Supply Voltage
CIN
300
25
= 5V, F
SW
= 300kHz, I
OUT
5.0
SW
55
350
=1V, V
= 300kHz, V
OUT
DRV
OUT
100
= 0A
& V
400
(nH)
CIN
CIN
OUT
=5V, V
5.5
J
(V)
(
125
= 1V, I
o
UVLO
C)
UVLO
450
OUT
UP
DN
DRV
150
= 30A
=5V, L
500
6.0
9
Figure 17.
Figure 15.
OUT
Figure 13.
1.03
1.02
1.01
1.00
0.99
0.98
0.97
3.0
2.5
2.0
1.5
1.0
0.5
60
50
40
30
20
10
=250nH, T
0
100
4.50
0
V
T
V
IN
A
IN
200
= 25°C
= 12V, V
5
= 12V, V
PWM Threshold vs. Driver Supply Voltage
Driver Supply Current vs. Output Current
F
SW
300
10
A
Driver Supply Current vs. Switching
Module Switching Frequency, F
=25°C, and natural convection cooling,
= 1000kHz
DRV
4.75
DRV
Driver IC Supply Voltage, V
15
Module Output Current, I
& V
400
& V
CIN
CIN
20
500
Frequency
= 5V, V
= 5V, V
25
600
5.00
OUT
OUT
F
SW
= 1V, I
30
= 1V
= 300kHz
700
35
OUT
OUT
800
CIN
SW
= 0A
(A)
5.25
(V)
40
(kHz)
900 1000 1100
V
V
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HIZ_PWM
45
IH_PWM
V
V
V
TRI_LO
IL_PWM
TRI_HI
50
5.50
55