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TPS552882-Q1: UVLO_HYS

Roy Chou1
Genius 16780 points
Part Number: TPS552882-Q1


Tool/software:

Hi Team,

I would like to below formula. If my R1 = R2 = 10k

VIN(UVLO_ON) = 1.23V*(1+10k/10k) = 2.46V

VIN(UVLO) = 10k*5uA = 0.05V

What is high and low threshold of UVLO?

1. 2.46V and 2.46V+0.05

or 

2. 2.46V-0.05 and 2.46V


Regards,

Roy

  • 0
    TI__Mastermind 28970 points

    Hi Roy,

    Thanks for reaching out. Due to bandwidth limit, we will reply to you in two days.

    BRs,

    Bryce

  • 0
    TI__Mastermind 28970 points

    Hi Roy,

    The Vin_UVLO_ON voltage is decided by equation (1), when device is not enabled, there is no sourcing current from EN/UVLO pin. And the Vin UVLO threshold voltage is as equation (2).

    So for your example, Vin_UVLO_ON=2.46V, Vin_UVLO_OFF=2.46V-5u*10k=2.41V.

    The Vin UVLO also needs to be considered, max 3.0V rising threshold.

    BRs,

    Bryce