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LM10504: Is there any way to control turn on time?

Toshihiro Watanabe
Genius 10235 points
Part Number: LM10504

Hello,

We want to control LM10504 output turn on time in some reasons. Is there any options to control ramp up time?

Best regards,

Toshihiro Watanabe

  • 0
    TI__Genius 10885 points
    Watanabe-san,

    The LM10504 has fixed enable delay times of 2ms and cannot be changed. The soft-start ramp time is a function of the output voltage, output capacitance, and load current. From 7.3.4:
    "For Bucks1, 2, and 3 the soft start is implemented by increasing the switch current limit in steps that are gradually set higher. The start-up time depends on the output capacitor size, load current, and output voltage. Typical start-up time with the recommended output capacitor of 10 μF is 0.2 to 1ms."

    Best Regards,
    Rick S.