Replacement for PWM regulator AP1501-33

[emilije]

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]

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