Preliminary SN3910 Universal High Brightness LED Driver General Description The SN3910 is an open loop, current mode, control LED driver IC.
The SN3910 operates constant off-time mode.
It allows efficient operation of High Brightness (HB) LEDs from voltage sources ranging from 8VDC up to 450VDC or 110VAC/220VAC.
The SN3910 includes a PWM dimming input that can accept an external control signal with a duty ratio of 0 - 100% and a frequency of up to a few kilohertz.
It also includes a 0 - 250mV linear dimming input which can be used both for linear dimming and temperature compensation of the LED current.
The SN3910 is ideally suited for buck LED drivers.
Since the SN3910 operates in open lo...

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