Diodes PAM2306D - Manual (Page 9)

PAM2306D
Document number: DSxxxxx Rev. 1 - 1
9 of 12
www.diodes.com
November 2012
© Diodes Incorporated
PAM2306D
A Product Line of
Diodes Incorporated
Application Information
(cont.)
PCB Layout Check List
When laying out the printed circuit board, the following checklist should be used to ensure proper operation of the PAM2306D. These items
are also illustrated graphically in Figure 1. Check the following
in your layout:
1. The power traces, consisting of the GND trace, the SW trace and the V
IN
trace should be kept short, direct and wide.
2. Does the FB pin connect directly to the feedback resistors? The resistive divider R1/R2 must be c onnected between the (+) plate of C
OUT
and ground.
3. Does the (+) plate of C
IN
connect to V
IN
as closely as possible? This capacitor provides the AC current to the internal power MOSFETs.
4. Keep the switching node, SW, away from the sensitive FB node.
5. Keep the (–) plates of C
IN
and C
OUT
as close as possible.
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Figure 1. PAM2306D Suggested Layout