High Eiciency Integrated Driver For 6-Strings Of 30mA LEDs

The SC440A is a high-ei ciency multiple string WLED driver with an integrated boost converter. It operates over a wide input range from 4.5V to 27V with a maximum output voltage of 42V and a 2A internal power Switch It CAN drive up to 42V output voltage in 6 strings with current up to 30mA per string. The string-to-string current matching is 1% typical, 3% maximum and 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 800kHz switching frequency enables the user to optimize the external component sizes for high ei ciency. When there are fewer LEDs in each string, users CAN use a lower output voltage protection level which yields an allowable reduction in associated costs, size and voltage ratings of the output capacitor. By Semtech Corporation
SC440A 's PackagesSC440A 's pdf datasheet

SC440A Pinout, Pinouts
SC440A pinout,Pin out
This is one package pinout of SC440A,If you need more pinouts please download SC440A's pdf datasheet.

SC440A Application circuits
SC440A circuits
This is one application circuit of SC440A,If you need more circuits,please download SC440A's pdf datasheet.

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