BD9397EFV Просмотр технического описания (PDF) - ROHM Semiconductor

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BD9397EFV

White LED Driver for large LCD panel

ROHM Semiconductor 

BD9397EFV

Datasheet

●3.7.4 About LED SHORT detection

LED SHORT detection don’t work by individual ch. The followings are needed for detection.

・Detection channel is PWM=H and LED terminal voltage is over LED SHORT detection threshold voltage.

・Except for detection ch, any 1ch is PWM=H and LED terminal voltage is under 3V.

・The above-mentioned 2 states continue over 4clk of DCDC oscillation frequency.

Detection sequence is the followings.(omit 4clk mask)

Figure 30.

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TSZ22111・15・001

22/27

TSZ02201-0F1F0C100330-1-2

9.Jan.2014 Rev.001

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