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AS1322

Data Sheet

PCB Layout Guidelines

The high-speed operation of the AS1322 requires proper layout for optimum performance. Figure 21 shows the recom-

mended component layout.

!

A large ground pin copper area will help to lower the device temperature.

!

A multi-layer board with a separate ground plane is recommended.

!

Traces carrying large currents should be direct.

!

Trace area at pin FB should be as small as is practical.

!

The lead-length to the battery should be as short as is practical.

Figure 21. Recommended Single-Layer Component Placement

1

AS1322

2

3

6

5

4

Optional

SHDNN

FB

GND

SW

SHDNN