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OPA567: Max value of ILIM resistor?

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?

  • 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 k just as you had derived. There shouldn't be any issues with that.

    Regards, Thomas

    Precision Amplifiers Applications Engineering