LN5921 bias equivalent, constant-current white led bias.
* Ultra Low 200mV Dropout at 20mA
* 0.6% High Accuracy Current Matching
* 20mA Full Scale Current
* 32 Level Linear Current Brightness Control
* PWM B.
For dimming control, an enable input pin is controlled by processor GPIO output pulses for 32 level linear current. Usi.
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