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LM3880 - power up sequence in case of Vin=12V

Other Parts Discussed in Thread: LM3880

Hi all

Would you mind if we ask sequence?
Our customer would like to make power up sequence in case of Vin=12V.
There is no Power Sequencer which is avilable for Vin=12V.
LM3880 is not avilable for Vin=12V.(MAX Vin=5.5V)

Without using LDO and DCDC for buck down voltage, if you have some advice, could you let us know?

Kind regards,

Hirotaka Matsumoto

  • Hi team

    We are sorry to rush you, however could you give us the reply?

    Kind regards,

    Hirotaka Matsumoto

  • HI Hirotake,

    Unfortunately TI doesn't have any analog sequencer to support Vcc more than 6.5V (UCC devices included). They have to step down the voltage using a DC-DC step down or an LDO. Power up and down sequencing is used to control down stream electronics. Normally lot less than 12V rails are used for EN and PGOOD signals. You have to propose a PMIC solution if they don't want to step down the voltage.

    Hope this helps.  

  • Hirotaka Matsumoto,

    If you can provide additional information about the application or system, we might be able to help you find another solution. Do you have any schematic or other useful information?


    Hope we can help,

    Michael