FAN2103 Fairchild Semiconductor, FAN2103 Datasheet - Page 8

• Manufacturer Part Number: FAN2103
• Description: This part is covered in Fairchild's href="http://www
• Manufacturer: Fairchild Semiconductor

© 2007 Fairchild Semiconductor Corporation
FAN2103 • Rev. 1.0.7
Application Circuit
Typical Performance Characteristics
Typical operating characteristics using the circuit shown in Figure 10. V
Figure 11.
1.828
1.826
1.824
1.822
1.820
1.818
100
95
90
85
80
75
70
65
60
55
0.00
Figure 13. 1.8 V
0.00
+5V
V
OUT
Vo8V (V)
Vo12V (V)
Vo18V (V)
62
0.50
0.50
2.00K
4.7n
1.8 V
Regulation Characteristic
OUT
1.00
1.00
2.49K
1.0µ
X5R
Efficiency
Load Current (A)
OUT
Efficiency Over V
Load Current (A)
Regulation vs. Load
4.7n
1.50
1.50
200K
4.7n
2.49K
Figure 10. Application Circuit: 1.8 V
30.1K
10K
56p
2.00
2.00
PGOOD
COMP
IN
AGND
Effi12V (%)
Effi8V (%)
Effi18V (%)
2.50
2.50
VCC
ILIM
R(T)
vs. Load
NC
EN
FB
15
13
24
20
19
17
14
18
16
3.00
3.00
8
Figure 12. 1.8 V
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
100
95
90
85
80
75
70
65
0.00
P2
25
P3
P1
1
0.00
Figure 14. 3.3 V
VIN
BOOT
SW
PGND
RAMP
IN
=16V, V
Loss12V (W)
Loss8V (W)
Loss18V (W)
0.50
0.50
OUT
(Circuit Values Changed)
200K
0.1µ
, 500KHz
OUT
CC
1.00
1.00
1.5W
390p
=5V, unless otherwise specified.
Load Curr e nt (A)
* TDK
RLF7030T-3R3M4R1
Dissipation Over V
Power Loss
Load Current (A)
Efficiency
OUT
3.3 µ *
3.3n
1.50
Efficiency vs. Load
1.50
V
OUT
2.00
2 x 4.7
X7R
4 x 22
X5R
2.00
8-20 V
V
V
IN
IN
µ
µ
=8V , 300KHz
=12V, 500Khz
2.50
IN
IN
2.50
vs. Load
www.fairchildsemi.com
3.00
3.00