Datasheet Summary
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PRELIMINARY
White LED Driver with Automatic Dimming Control
! GENERAL DESCRIPTION The NJU6051 is a white LED driver with an automatic dimming control. It contains an output driver, a PWM controller, a luminance sensor control (power supply for sensor & A/D converter), a step-up DC/DC converter, a serial interface, etc. The output driver ensures a 30mA maximum capability which allows the connection of 8 white LEDs (4 series x 2 parallels). Depending on the ambient light sensed with an external luminance sensor, the PWM controller controls PWM duty in 8 steps preselected out of 64 steps. In addition, the frequency of the DC/DC converter is high so that it...