L6933H1.2

Components selection

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8

Components selection

8.1

Input capacitor

The input capacitor value depends on a lot of factors such as load transient requirements,

input source (battery or DC/DC converter) and its distance from the input cap. Usually a

47 µF is enough for any application but a much lower value can be sufficient in many cases.

8.2

Output capacitor

The output capacitor choice depends basically on the load transient requirements.

Tantalum, Special Polymer, POSCAP and aluminum capacitors are good and offer very low

ESR values. Multilayer ceramic caps have the lowest ESR and can be used for particular

applications without affecting the loop stability.

Below a list of some suggested capacitor manufacturers

Table 7. Suggested capacitor

Manufacturer

Type

Cap value (µF)

Rated voltage (V)

Murata

Ceramic

1 to 47

4 to 16

Panasonic

Ceramic

1 to 47

4 to 16

Tayo Yuden

Ceramic

1 to 47

4 to 16

TDK

Ceramic

1 to 47

4 to 16

Tokin

Ceramic

1 to 47

4 to 16

SANYO

Poscap

1 to 47

4 to 16

Panasonic

SP

1 to 47

4 to 16

Kemet

Tantalum

1 to 47

4 to 16