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LP5900: LP5900TLX-3.3 Issue

Vincent Lin
Prodigy 240 points
Part Number: LP5900

Dear Sir:

LP5900TLX-3.3

VIN: 5V

EN: Low

VOUT: 1V

VOUT Absolute Maximum Rating : VIN(max)+0.3 =6+0.3=6.3V

When the voltage of VOUT is 1V. < VOUT(Max) = 6.3V

It doesn’t cause the damage LP5900TLX-3.3(U702)

Is it correct?

Please check to reply it asap.

Thanks

B,R

Vincent

 

 

  • 0
    TI__Genius 12511 points

    Hi Vincent,

    If you are externally providing 1V on VOUT with the device disabled, it should not harm the device as the pass device is still forward biased with 5V on the input.

    However if VIN is not applied first and the 1V is applied on VOUT, then the device will be damaged as abs max is violated, so sequencing is a concern.

    Regards,

    John

  • 0 in reply to John Schneider
    Prodigy 240 points

    Dear Sir:

    LP5900TLX-3.3

    VIN: 5V

    EN: Low (the device disabled)

    VOUT: 1V

    When VIN is applied first on the input, and then 1V is applied on VOUT.

    VOUT Absolute Maximum Rating : VIN(max)+0.3 =6+0.3=6.3V

    The voltage of VOUT is 1V. < VOUT(Max) = 6.3V

    The device will not be damaged as abs max isn’t violated.

    Is it correct?

    Please check to reply it asap.

    Thanks a lot.

    B,R

    Vincent

     

     

     

     

  • 0 in reply to Vincent Lin
    TI__Genius 12511 points

    Hi Vincent,

    Correct, If applying Vin first, then the 1V VOUT, the device should not be damaged under a disabled state.

    Regards,

    John