© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN53600 / FAN53610 • Rev. 1.4 13
FAN53600 / FAN53610 — 3 MHz, 600 mA / 1 A Synchronous Buck Regulator
PCB Layout Guidelines
There are only three external components: the inductor and
the input and output capacitors. For any buck switcher IC,
including the FAN53600/10, it is important to place a low-ESR
input capacitor very close to the IC, as shown in Figure 27.
The input capacitor ensures good input decoupling, which
helps reduce noise 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
IN
and C
OUT
as 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.
Figure 27. PCB Layout Guidance
The following information applies to the WL-CSP package dimensions on the next page:
Product-Specific Dimensions
