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LMP8603 Bidirectional

hideyuki sakai
Mastermind 6250 points
Other Parts Discussed in Thread: LMP8603

Dear, Sir.

LMP8603 has "OFFSET" pin for bidirectional current sensing.

The output is 1/2 voltage applying the "OFFSET" is referenced to mid-rail voltage.

The datasheet indicates "OFFSET" pin tied to "VS" under such usage.

 

Is it no problem that "OFFSET" tied to another voltage source closed to "VS" voltage?

It could be utilized as output voltage offset adjustment if possible.

Is this kind of usage acceptable for LMP8603?

 

Best Regards,

  • 0
    TI__Genius 16890 points

    Hi,

    Yes, you can do that.

    From the datasheet, page 19:

    When the offset pin is connected to a voltage source, the output signal will be level shifted to that voltage divided
    by two. In principle, the output signal can be shifted to any voltage between 0 and VS/2 by applying twice that
    voltage from a low impedance source to the OFFSET pin.

    Mike