unknown PWM controller

[moose001]

Hi

Can anyone identify this 6pin PWM controller? its on a (non-working) Black&Decker 18V Li-ion charger.

thanks in advance.

[HarryA]

That is most likely an internal factory  number. Remember they do not want you to repair them but to buy new ones. There are a number of  videos on youtube in regard to chargers. Search on " Black&Decker 18V Li-ion charger "

for example: https://www.youtube.com/watch?v=c-pTziUV1as

[bidrohini]

On 2/23/2023 at 2:56 AM, HarryA said:

That is most likely an internal factory  number. Remember they do not want you to repair them but to buy new ones. There are a number of  videos on youtube in regard to chargers. Search on " Black&Decker 18V Li-ion charger "

for example: https://www.youtube.com/watch?v=c-pTziUV1as

I think you are right. Because I never came across such a strange marking on ICs before. 

[moose001]

well..actually..i was told that it is a richtek R7731A.

i was directed to these sites.... http://www.smdmark.com/en-US/search/code?id=dp%3D and https://www.s-manuals.com/smd

From their datasheet the marking is really idp=W where W is a date code.

 

chopper r7731a_richtek.pdf

[Minver1945]

On 3/2/2023 at 5:00 PM, moose001 said:

well..actually..i was told that it is a richtek R7731A.

i was directed to these sites.... http://www.smdmark.com/en-US/search/code?id=dp%3D geometry dash online and https://www.s-manuals.com/smd

From their datasheet the marking is really idp=W where W is a date code.

 

chopper r7731a_richtek.pdf 363.98 kB · 0 downloads

Thanks for this one.