high voltage cmos boost white led driver.
The CAT4237 high−voltage output stage is perfect for driving six, seven or eight white LEDs in series with inherent cur.
The CAT4237 is a DC/DC step−up converter that delivers an accurate constant current ideal for driving LEDs. Operation at a constant switching frequency of 1 MHz allows the device to be used with small value external ceramic capacitors and inductor. L.
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