FAN5066 Datasheet, PDF (7/18 Pages) Fairchild Semiconductor – Ultra Low Voltage Synchronous DC-DC Controller

PRODUCT SPECIFICATION
Application Circuit
FAN5066
+12V
+5V
C1 0.1µF
L1
2.2 µH
CIN
330µF
+5V
R5
2KΩ
U2
FAN4041
R6
324Ω
R7
909Ω
C9
0.1µF
VID4
VID3
VID2
VID1
C2 0.1µF
R1
47Ω
11
10
12
9
13
8
14
7
15 U1 6
16 FAN5066 5
17
4
18
3
19
2
20
1
C_EXT
C3 ^100pF
0.1µF
ENABLE
C7
0.1µF
D1
1N4735A
C5
1µF
C4
1µF
R2
4.7Ω
R3
4.7Ω
C6
0.1µF
FDS6984S
Q1
L2
4.7µH
Q2
R _SENSE
25mΩ
R4 10KΩ
C8 0.1µF
VCC
PWRGD
VO
COUT
470µF
Figure 1. Application Circuit for 900mV @ 3A
REV. 2.1.4 11/13/01
7