Skocz do zawartości

Jakie kondensatory do LDO LM1117


Pomocna odpowiedź

Za https://www.national.com/ds/LM/LM1117.pdf

1.0 EXTERNAL CAPACITORS/STABILITY

1.1 Input Bypass Capacitor

An input capacitor is recommended. A 10µF tantalum on the input is a suitable input bypassing for almost all applications.

1.2 Adjust Terminal Bypass Capacitor

The adjust terminal can be bypassed to ground with a bypass capacitor (CADJ

) to improve ripple rejection.

...

1.3 Output Capacitor

The output capacitor is critical in maintaining regulator stability, and must meet the required conditions for both minimum amount

of capacitance and ESR (Equivalent Series Resistance). The minimum output capacitance required by the LM1117 is 10µF, if a tantalum capacitor is used. Any increase of the output capacitance will merely improve the loop stability and transient response. The ESR of the output capacitor should range between 0.3Ω - 22Ω. In the case of the adjustable regulator, when the CADJ is used, a larger output capacitance (22µf tantalum) is required.

Czyli tak, 10uF tantalowe dla Twojej wersji będa dobre.

Link to post
Share on other sites
Anonim
Ten temat został zamknięty.
×
×
  • Utwórz nowe...

Ważne informacje

Ta strona używa ciasteczek (cookies), dzięki którym może działać lepiej. Więcej na ten temat znajdziesz w Polityce Prywatności.