FAN5069_08 Datasheet, PDF (9/22 Pages) Fairchild Semiconductor – PWM and LDO Controller Combo

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