RM9XG sot23-5 component

Do you have a good macro photo of it?

More information about the application - what particular board it is used on, would possibly help.

- Gough

Hello,

felipeab79 said:

part number of this component installed on pcb board

You'll need to provide photographs or model and product details so that people know what you're referring to.

hello, this is one picture good resolution. RM9sE

and this is another component, same pcb board, but 

and this one is the faulty component that I need to replace it. unfortunately I dont have more information about this component. RM9XG

Thanks for your message. I included some pics.

Wild guessing here:

You don't show enough in the picture - context is all in this kind of search.

But I'll guess its made by ROHM (just a hunch from the R)

If so their codes on SOT23-5 (which they call SSOP5) start with three characters of lot number and then 2 of actual part code.

So we look up XG on https://smd.yooneed.one/code5847.html

and find:

But if it's not a ROHM part then this will be wrong - which is why you need to have some idea of what the part does.

smd.youneed doesn't list any RM9 parts but does list a whole load of RM parts.

You need to check the data sheets for them to make sure that you read the marking correctly, then think if the part might be what you've found and then check the connections and values other parts close by.

How do you know the part is faulty ?

MK

HI, thanks , I appreciate your comments. I checked pcb board and found that connections for 

this component.

 between 1 and 3 there is a bridge that is connected to the power supply (9 volts) and terminal 2 is connected to gnd. I found a short circuit to the power supply, so I checked several components and as soon as I removed this element, power supply and pcb board started.

Tomorrow I will have a better look to the pcb to get an idea where are terminal 5 and 4 are connected.

The RM9sE looks like a adjustable linear regulator with standard pinout:

1: input with an input cap to GND

2: GND

3: enable, active high

4: FB, feedback with a resistor divider from output voltage - FB - GND

5: Output with output cap.

As the trace for the output voltage is not very thick it might be a reference voltage, or an analog voltage feed only a few components. If you find other component pins connected to the same net as pin5, they might have better markings for identification that you get at least an idea of the voltage range of the output voltage. 

The 2nd, RM9xG could be the same/similar component, just a different layout for input, output caps and feedback resistors. 

And there might be a solder bridge between pin 1 and 2 on the RM9sE, if it is not only a shadow or reflection in the image. 

I am impressed....thanks a lot for your accurate analysis. terminal 5 sources with power to a group of components. I will check a good controller to define what could be the output voltage.