SC441 Datasheet (Semtech Corporation) - High Effi ciency Integrated Driver

SC441, High Effi ciency Integrated Driver

The SC441 is a high-efficiency multiple string WLED driver with an integrated boost converter.

It operates over a wide input range from 4.5V to 21V with a maximum output voltage of 36V and a 2.5A internal power switch.

It can drive up to forty WLEDs in 4 strings with current up to 150mA per string.

SC441 Features

* Wide input voltage range from 4.5V to 21V

* 36V maximum output voltage

* Drives up to 40 WLEDs in 4 strings

* Programmable LED current for up to 150mA per string

* +/- 2% string-to-string current matching

* Up to 90% efficiency

* Wide 0.2% to 100% PWM