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LM119QML-SP: What is the minimum power supply voltage (V+ - V-) for the device

Jim Brinkhurst1
Mastermind 43950 points
Part Number: LM119QML-SP

Hello experts

Can the LM119QML-SP operate with supply voltage of lower than 5V?

My customer wants to operate it from a nominal 5V supply, so the minimum voltage could be slightly less than 5V.

What is the minimum rated supply voltage?

Thanks for your help.

Best regards,

Jim B

  • +1
    TI__Guru 50016 points

    Hi Jim,

    I have heard of the LM319 being *functional* down to 3V at room temp, but I would not count on that that across MIL temperature, and it would not meet datasheet specs (prop delay, Vos, Vcm range, output drive).

    All the specs and the supply current graph start at 5V (±2.5V).

    Also note that the input range is Vcc-3V at a 5V supply, so at 3V supply, your input range is near zero. Even at 5V, you have a 2V input range.

    Usually when designing for a "5V" supply, regulator tolerances and supply droop are taken into account and 4.5V is in the back of the designers mind (but not spec'd).

    Since the tables and graphs are specified at 5V, operation below 5V is at the customers own risk.

    For a Hi-Rel, Mil temp range device, I would not go below 4V, and watch the input range and output currents if they do.

    Of course, TI's official response is to stay within the specified supply range (5V-30V).