Layout Guidelines

Proper board layout to accommodate the LM2797/98 circuit

will help to ensure optimal performance. The following guide-

lines are recommended:

•

Place capacitors as close to the LM2797/98 as possible,

and preferably on the same side of the board as the IC.

•

Use short, wide traces to connect the external capacitors

to the LM2797/98 to minimize trace resistance and induc-

tance.

•

Use a low resistance connection between ground and the

GND pin of the LM2797/98. Using wide traces and/or

multiple vias to connect GND to a ground plane on the

board is most advantageous.

Figure 2 is a sample single-layer board layout that accom-

modates the LM2797/98 typical application circuit, as pic-

tured on the cover of this datasheet

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FIGURE 2. Sample single-layer board layout of the LM2797/98 Typical Application Circuit

(Vias to a ground plane, assumed to be present, are located in the center of the LM2797/98 footprint.)

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