?2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5069 Rev. 1.1.5
9
Typical Performance Characteristics (Continued)
PWM Line Regulation (V
OUT
 = 1.5V)
LDO Load Regulation (V
OUT
 = 1.203V)
Load Line Regulation (V
OUT
 = 1.203V)
Master Clock Frequency
PWM Load Regulation (V
OUT
 = 1.50V)
Efficiency vs. Input Voltage
1.54
1.52
1.50
1.48
1.46
6
8
10
12
14
INPUT VOLTAGE (V)
16
18
20
I
L
 = 0A
I
L
 = 5A
I
L
 = 10A
1.210
1.205
1.200
1.195
1.190
0
1
2
3
4
LOAD CURRENT (A)
5
700
600
500
400
300
200
100
0
100
200
300
R
T
 (k?/SPAN>)
400
1.210
1.205
1.200
1.195
1.190
8
10
12
14
INPUT VOLTAGE (V)
16
18
20
1.510
1.505
1.500
1.495
1.490
0
2
4
LOAD CURRENT (A)
6
8
10
V
IN
 = 8V
V
IN
 = 12V
V
IN
 = 15V
V
IN
 = 20V
I
L
 = 0A
I
L
 = 2A
I
L
 = 5A
V
IN
 = 8V
V
IN
 = 12V
V
IN
 = 15V
V
IN
 = 20V
100
80
60
40
20
0
0
2
4
LOAD CURRENT (A)
6
8
10
V
IN
 = 8V
V
IN
 = 12V
V
IN
 = 15V
V
IN
 = 20V
Figure 14. PWM Line Regulation
Figure 17. LDO Load Regulation
Figure 15. LDO Line Regulation
Figure 18. R
T
 vs. Frequency
Figure 16. PWM Load Regulation
Figure 19. 1.5V PWM Efficiency
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