Place the input capacitors on the same side of the board and as close to the IC as
possible.
Keep both the PVIN and PGND connections short.
Place several vias to the ground plane close to the input capacitor ground
terminal.
Use either X7R or X5R dielectric input capacitors. Do not use Y5V or Z5U type
capacitors.
Do not replace the ceramic input capacitor with any other type of capacitor. Any
type of capacitor can be placed in parallel with the input capacitor.
If a Tantalum input capacitor is placed in parallel with the input capacitor, it
must be recommended for switching regulator applications and the operating voltage
must be derated by 50%.
In “Hot-Plug” applications, a Tantalum or Electrolytic bypass capacitor must be used
to limit the overvoltage spike seen on the input supply when power is suddenly
applied.
DS20007156A
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