SC441: High Efficiency Integrated Driver For 4-Strings Of 150mA LEDs | Semtech

The SC441 is a high-eiciency multiple string WLED driver with an integrated boost converter. It operates over a wide input range from 4.5V to 21V with a maximum out- put 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. The string-to-string current match- ing is 2% typical, 3% maximum. The overall ei ciency is greater than 90% due to the low Current Sense voltage and a low-impedance internal power Switch The wide PWM dimming range boasts a ratio of 500: 1. The SC441 also features comprehensive open and short- circuit LED protection functions. It disables the corre- sponding strings with LED open or LED short conditions while maintaining normal operation of other, unaf ected LED strings. This feature allows LCD panels to remain view- able even under LED failure, wire disconnect, or short-cir- cuit conditions. The internal thermal shutdown protects the IC from overheating at abnormal conditions. By Semtech Corporation
SC441 's PackagesSC441 's pdf datasheet
SC441TETRT




SC441 Pinout will be updated soon..., now you can download the pdf datasheet to check the pinouts !
SC441 Application circuits
SC441 circuits
This is one application circuit of SC441,If you need more circuits,please download SC441's pdf datasheet.


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