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OPA567: Max value of ILIM resistor?

Trevor Barcelo
Prodigy 10 points
Part Number: OPA567

Is there a limit to the value of ILIM resistor that can be used for OPA567? I'm looking to limit it to ~150 mA yielding an ~77k ILIM resistor. Any issue with that?

  • +1
    TI__Guru* 93105 points

    Hello Trevor,

    The OPA567 Current Limit function is specified for operation with a ±0.2 A to  ±2.2 A range in the Electrical Characteristics table. Therefore, the ILIM resistor needs to be set for a current limit within that current limit range and its value set according to the RSET equation:

    RSET = 9800 (1.18V/ILIMIT) Ω

    For an ILIMIT of 0.15 Amps the RSET calculates to be 77 kΩ just as you had derived. There shouldn't be any issues with that.

    Regards, Thomas

    Precision Amplifiers Applications Engineering