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LM2991 ADJ pin input range

Taichi Noda
Expert 1350 points
Other Parts Discussed in Thread: LM2991

Hi,All

How much is range of input voltage about LM2991?

I checked LM2991 datasheet,but nothing about it.

I think that input voltage range is -3V to 24V,correct?

Best Regards.

  • 0
    TI__Mastermind 22610 points

    LM2991 Negative Low Dropout Adjustable Regulator

    Depends on what the output voltage is programmed to.

    Normal definintion for the LM2991 Operating Input Voltage would be :

          (Vout − 1V)  to  (−26V)

    The full operating voltage range may not be available if the load current is elevated, or package thermal resistance is elevated. Unfortunately, the datasheet does not go into thermal disspation in any detail, only the brief 'Note 4' under the Absolute Maximum ratings table.

  • 0 in reply to Donald Jones
    Expert 1350 points

    Hi,Mr. Jones

    Thanks you for quick reply!!

    If there is another opportunity,please offer your support again.

    Best regards!!