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TPS92390: LED short setting

Part Number: TPS92390

Hi,

I have checked TPS92390 datasheet 7.3.9.3.2 Short LED Faults (SHORT_LED) chapter,

But still have some question about this function? It not depend on how much LED series on 1 string?

I need set any register or other external HW pin? or TPS92390 will auto detect LED have any voltage abnormal to turn off the LED output?

Thanks!

Jeff

  • Hi Jeff,

    Yes TPS92390 will auto detect the voltage on output pins and compare it with short threshold 5.4V. Once LED short happened, the short string cause the related output pin pulled high and above the threshold. The device would automatically disable the output pin and report to LED_STATUS.