Typical Application Diagrams
15V
R BOOT
D BOOT
V IN
FAN73611
1 V DD
V B 8
R1
PWM
2 IN
HO 7
C BOOT
R2
L1
C1
3 NC
V S 6
4 GND
NC 5
D1
C2
V OUT
FAN73611 Rev.01
Figure 1. Step-Down (Buck) DC-DC Converter Application
Internal Block Diagram
V DD
1
UVLO
UVLO
8
V B
NOISE
R
R
7
HO
IN
2
CANCELLER
S
Q
100K
GND
4
6
V S
Pin 3 and 5 are no connection.
FAN73611 Rev.02
Figure 2. Functional Block Diagram
? 2010 Fairchild Semiconductor Corporation
FAN73611 ? Rev. 1.0.0
2
www.fairchildsemi.com
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