Replacement for PWM regulator AP1501-33

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  • emilije
    Senior Member
    • Aug 2010
    • 60

    #1

    Replacement for PWM regulator AP1501-33

    Hi guys,

    In Linksys WRT54G i've found one faulty AP1501-33 PWM regulator (to263-5l housing)

    According to datasheet 33 means 3.3V
    Here in Croatian shops i can only find AP1501-50 which would be 5V. Is there any other replacement or i must find exactly AP1501-33?

    Thanx!
  • mariushm
    Badcaps Legend
    • May 2011
    • 3799

    #2
    Re: Replacement for PWM regulator AP1501-33

    You can replace it with anything that has the same pin arrangement but it has to be fixed value, 3.3v

    See if you can order one from Farnell ( http://www.farnell.com/ but use UK version if you can't see your country) or RS-Online ( http://hr.rsdelivers.com/?&cm_mmc=Wo..._-MainWorldMap )

    For example, these seem to be compatible with that IC

    ap1506 http://uk.farnell.com/diodes-inc/ap1...263/dp/1825316

    lm2595s-33 http://uk.farnell.com/national-semic...595/dp/1215202

    these might also work but they're designed to run at a lower frequency, which means the components used with the previous chip (inductors, capacitors) may be too small for them and thus the chip may be unstable.

    LM2575S-3.3 http://uk.farnell.com/national-semic...575/dp/8221944

    ap1512 3.3 http://uk.farnell.com/diodes-inc/ap1...263/dp/1825328

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