4W8N

KevinW

Member

• Friday at 2:56 PM

• #1

Anyone know what this device is ?
It's marked 4W8N but I can't find it anywhere.

 

Attachments

• 4w8n.png

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Lightium

Active Member

• Friday at 6:53 PM

• #2

maybe a voltage regulator? what circuit is it?

 

KevinW

Member

• Saturday at 3:06 AM

• #3

It's the control section of a 20 volt brushless motor board.

 

Lightium

Active Member

• Saturday at 8:20 AM

• #4

Unfortunately, a good source for reference and replacement parts is no-more, so it will be hard to know what you have and get a replacement. Unless one of the older members chimes-in with more experience to help you it will be hard to find what you have.

 

KevinW

Member

• Saturday at 9:32 AM

• #5

This is a fairly new unit, maybe three years.

 

rjenkinsgb

Well-Known Member

Most Helpful Member

• Saturday at 11:02 AM

• #6

Possibly Ricoh R1210N341C PWM regulator?? That's a "4W" in a five lead package.

R1210N341C Download

Download R1210N341C Datasheet. File Size: 28.93 Kbytes. Part #: R1210N341C. Description: POWER MANAGEMENT ICs MARK INFORMATIONS R1210N SERIES MARK SPECIFICATION. Manufacturer: RICOH electronics devices division.

www.alldatasheet.com

https://www.nisshinbo-microdevices.co.jp/en/pdf/datasheet/r1210nxx1-ea.pdf

That part number would be a 3.4V regulator, but it could possibly be used with a different feedback circuit as a PWM driver??

(Only the first part of some surface mount markings is the actual device ID, the rest is a batch, date or factory code).

 

KevinW

Member

• Saturday at 2:22 PM

• #7

Ok, thank you.
I'll look at that.

update
I have 20 volt in and nothing out so I think it is a voltage regulator.

 

Last edited: Saturday at 3:21 PM

Lightium

Active Member

• Yesterday at 3:20 AM

• #8

A photo of the other side of the board and the pin designation of the header it's traced to might be helpful.