« previous next »
Pages: [1]   Go Down

Author Topic: unknown PWM controller  (Read 637 times)

0 Members and 1 Guest are viewing this topic.

Offline mooseTopic starter

  • Contributor
  • Posts: 14
  • Country: nz
unknown PWM controller
« on: February 22, 2023, 04:25:37 am »
Hi
Does anyone know what 6pin PWM controller this is...its on a (non-working) Black&Decker 18V Li-ion charger.

thanks

Logged
 

Offline Kim Christensen

  • Super Contributor
  • ***
  • Posts: 1342
  • Country: ca
Re: unknown PWM controller
« Reply #1 on: February 22, 2023, 04:51:57 am »
It could be a R7731... Check the pinout and function from the datasheet against your circuit.
Logged
 
The following users thanked this post: moose

Offline mooseTopic starter

  • Contributor
  • Posts: 14
  • Country: nz
Re: unknown PWM controller
« Reply #2 on: February 22, 2023, 05:37:56 am »
sheesh Kim..it certainly seems to be it...THANK YOU!
As a matter of curiosity, is this a chip you've come across previously or are you familiar with the marking or...?
Logged
 

Offline Kim Christensen

  • Super Contributor
  • ***
  • Posts: 1342
  • Country: ca
Re: unknown PWM controller
« Reply #3 on: February 22, 2023, 05:51:38 am »
I just went and checked a SMD code page that I've used in the past. Maybe I got lucky with that one.
Logged
 

Offline mooseTopic starter

  • Contributor
  • Posts: 14
  • Country: nz
Re: unknown PWM controller
« Reply #4 on: February 22, 2023, 06:43:06 am »
now thats a 'double' thank you...excellent SMD markings lookup site!
Logged
 

Offline fzabkar

  • Super Contributor
  • ***
  • Posts: 2268
  • Country: au
Re: unknown PWM controller
« Reply #5 on: February 22, 2023, 08:55:53 am »
Logged
 

Offline mooseTopic starter

  • Contributor
  • Posts: 14
  • Country: nz
Re: unknown PWM controller
« Reply #6 on: February 22, 2023, 10:08:41 am »
also excellent!
thanks for that.
Logged
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee