The RT9373A is a high efficiency and cost effective chargepump white LED driver. It supports up to 3 white LEDswith regulated constant current for uniform intensity. TheRT9373A maintains the highest efficiency by utilizing ax1/x1.5/x2 charge pump and low dropout currentregulators.User can easily configure each LED current from 1.25mAto 20mA by a pulse dimming control. The dimming of whiteLEDs current can be achieved by applying a pulse signalto the EN pin. There are totally 16 steps of current couldbe set by users.RT9373A is available in a WQFN3x3-16L package.
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