Hisee CCTV monitor Buck regulator chip ID help required.

[zen]

Hi all, won't go into details but managed to cook it myself.

Has two sets of codes on it.

Top code JWN8T

Just below code 2GL 4B

PCB code ZM11E-T30 V2.1

Out of a Hiseen CCTV monitor with no model of course.

[lotas]

Re: Buck regulator chip ID help required.

JW5352M
https://www.joulwatt.com/en/proinfo_4329.html

[zen]

Re: Buck regulator chip ID help required.

Thanks Lotas

[zen]

Re: Buck regulator chip ID help required.

Can you kindly suggest an equivalent,as I can't seem to find a reliable supplier for original.

[lotas]

Re: Buck regulator chip ID help required.

Here you need to know the pinout of your DC-DC (pin1-x, pin2-x, ....) and select an analogue from this pinout.

[lotas]

Re: Buck regulator chip ID help required.

You know what fixed voltage should be at the output, it is usually selected using a divider of two resistors.

[zen]

Re: Buck regulator chip ID help required.

Thanks, will investigate.

[Davi.p]

Re: Buck regulator chip ID help required.

if you have no datasheet, the resistor calculation is impossible..

[zen]

Re: Buck regulator chip ID help required.

It's ok guys, managed to find supplier for original part from China of coarse.

Will update when it arrives.

[zen]

Re: Buck regulator chip ID help required.

Well, that was a waste of time.

Regulator arrive from China, fitted but output being pulled down by main micro.

This one is destined for the great scrapyard in the ground.