How to test this !!

Discussion in 'General Electronics Chat' started by spark8217, Aug 21, 2012.

  1. spark8217

    Thread Starter Member

    Aug 29, 2011
    64
    2
    Hi
    guys
    Never tested one of these 5Q1265RF Power switches by fairchild could anybody please give instructions on how to test? i would presume the test would be as a transistor for pins 1,2,3 but what about pin 4 and 5 , i have attached the data sheet and the pins are labelled as follows
    1-Drain
    2-gnd
    3- vcc
    4-feedback
    5-sync

    my own presumption would be i would have to build a simple circuit to test pins 4 & 5 or am i completely wrong ?
    cheers for any help

    spark 8217
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,009
    3,233
    Depending upon what you want to test if for, I believe for a total test you would need to build a complete test circuit that includes all the components needed for a typical operating circuit. This app note may help with that.
     
  3. spark8217

    Thread Starter Member

    Aug 29, 2011
    64
    2
    thanks for the reply ,yeah i thought so my self ! my problem is i removed it out of a surround sound and it was one of the parts that had signs of failure so need to check it , can you do basic checks on this component with regards to drain , ground ,vcc
    similar to a transistor , fet etc ? thanks for the help never tested one of these before .
     
  4. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
    Look at the schematic of the IC in the datasheet, and you will see that you do not have access to the gate of the MOSFET.:(
     
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