FAN5362 Fairchild Semiconductor, FAN5362 Datasheet - Page 11

• Manufacturer Part Number: FAN5362
• Description: The FAN5362 is a 500mA or 750mA, step-down, switching voltage regulator that delivers a fixed output voltage from an input voltage supply of 2
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN5362 • Rev. 1.0.4
PCB Layout Guidelines
There are only three external components: the inductor, input
capacitor, and the output capacitor. For any buck switcher IC,
including the FAN5362, it is important to place a low-ESR
input capacitor very close to the IC, as shown in Figure 26.
The input capacitor ensures good input decoupling, which
helps reduce noise appearing at the output terminals and
ensures that the control sections of the IC do not behave
erratically due to excessive noise. This reduces switching
cycle jitter and ensures good overall performance. It is
important to place the common GND of C
close as possible to the C2 terminal. There is some flexibility
in moving the inductor further away from the IC; in that case,
V
OUT
should be considered at the C
OUT
terminal.
IN
and C
OUT
as
11
Figure 26. PCB Layout Recommendation
C1
A1
B1
COUT
0603
C2
A2
B2
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