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TPS92661-Q1: Power Down Sequence

Ryuji
Guru 20090 points
Part Number: TPS92661-Q1

Hello,

If the TPS92661-Q1 power is turned off and the LED driver is still enabled, are there any problem?
Is there a possibility that the LEDx pin of TPS92661-Q1 becomes undefined and the LED will light momentarily?
If there is a possibility, please let me know how to care. (Except for sequence change)

Best Regards,
Ryuji

  • 0
    TI__Mastermind 25500 points

    Hello Ryuji-san,

    If the power is turned off the charge pump will be off and all of the switches will be in an undetermined state. There is no way to control that and it could cause blinking of some of the LEDs. TI recommends that the current source is always disabled before shutting off the power to the matrix manager.

    Regards,

    Clint