Targeted at high-power lighting applications, the LDS9001 and LDS9003 LED controllers with LED-Sense Temperature Compensation engine can independently monitor one and three LEDs, respectively. This feature allows for direct in-situ monitoring of the LED junction temperature without the need for an external temperature sensor.
Eight I2 C-programmable registers let users define the temperature derating profile as a function of the specific LED Diode used in the design. A 12-bit PWM generator with “smooth” logarithmic control supports the high-temperature LED current derating adjustments. User-programmed 8-bit codes are converted to 12-bit-resolution logarithmic steps of approximately 0.17 dB per step. The LDS9001/9003 are offered in 8-pin DFN and 16-pin TQFN packages, respectively. (Call company for pricing — samples available now.)
Leadis Technology , Sunnyvale , CA
Information 408 331-8600
http://www.leadis.com
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