lm2798mm-2.0 National Semiconductor Corporation, lm2798mm-2.0 Datasheet - Page 13

• Manufacturer Part Number: lm2798mm-2.0
• Description: 120ma High Efficiency Step-down Switched Capacitor Voltage Converter With Voltage Monitoring
• Manufacturer: National Semiconductor Corporation

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,
• Use short, wide traces to connect the external capacitors
and preferably on the same side of the board as the IC.
to the LM2797/98 to minimize trace resistance and induc-
tance.
(Vias to a ground plane, assumed to be present, are located in the center of the LM2797/98 footprint.)
FIGURE 2. Sample single-layer board layout of the LM2797/98 Typical Application Circuit
13
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
• Use a low resistance connection between ground and the
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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.
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