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TPS92390: ISET pin

Jeff YANG
Genius 5865 points
Part Number: TPS92390

Hi,

My customer wants used an external bias voltage to control ISET voltage to achieve dimming,

Is it possible on TPS92390 design?

Because their some old product is analog dimming not PWM dimming, they want use one chip to meet 2 dimming method.

Or any other analog dimming circuit suggestion? thanks!

Jeff

  • 0
    TI__Genius 12915 points

    Hi Jeff,

    ISET voltage is regulated by internal LDO and measure the current flow through this pin for output current setting. How does this structure work to configure the current through ISET pin? 

    So that customer do not have a digital interface to change the internal LED_CURRENT register value?