Layout Considerations

Due to the 1 MHz typical switching frequency of the LM3352,

careful board layout is a must. It is important to place the ca-

pacitors as close to the IC as possible and to keep the traces

between the capacitors and the IC short and direct. Use of a

ground plane is recommended.

Figure 4 shows a typical lay-

out as used in the LM3352 evaluation board.

DS101037-15

FIGURE 3. Low Output Noise and Ripple Buck/Boost Regulator

DS101037-16

FIGURE 4. Typical Layout, Top View (magnification 2.8X)

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