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LED BACKLIGHTING

Photonics Spectra
Nov 2007
Semtech Corp.Request Info
 
The SC4509 step-up converter for white LED backlighting from Semtech Corp. can drive up to five LEDs. With an integrated Schottky diode that operates with greater than 80% efficiency in a 2 × 2 × 0.8-mm package, the converter runs with low, 200-mV feedback and accepts input ranging from 2.7 to 10 V, while enabling 1.2-MHz PWM switching frequency and PWM dimming up to 10 kHz.


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