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LP5900 - Overcurrent Protection

Dice-K
Mastermind 6330 points
Other Parts Discussed in Thread: LP5900

Hello,
I have a question about LP5900.

Does LP5900 have a function of Overcurrent Protection?

Regards,
Dice-K

  • 0
    TI__Mastermind 22610 points

    Yes.

    Please refer to 'Isc' (Short-circuit current limit) in Section 6.5 (the Electrical Characteristics table), and 'Figure 9. Short-Circuit Current' in Section 6.7 (the Typical Characteristics charts), in the LP5900 datasheet.

  • 0 in reply to Donald Jones
    Mastermind 6330 points
    Hello Donald,
    Thank you for your reply.

    Does the output voltage output it normally when an electric current becomes 300mA, and a current limit acted?

    Best regards,
    Dice-K
  • 0 in reply to Dice-K
    TI__Mastermind 22610 points
    The LP5900 output voltage is ensured for an output current up to 150mA, no higher.
    Above 150mA the output voltage will likely be out of the ensured tolerance.
    When the output current limiting is active due to low load resistance the output voltage will drop to : Vout= Isc x Rload.
    Note that operating at the current limit will cause Thermal Shutdown protection circuitry to turn on.