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L99LD01 is a complete constant current DC-DC converter LED driver, manufactured in a BCD5S 70 V technology and assembled in a LQFP32TMpackage.
The device is designed to be used in boost, buck-boost and fly back converter topologies. An internal random dither oscillator works in low frequency modulation, allowing spreading the RF spectrum of the switching frequency, so reducing EMC emissions. The slope compensation ensures good converter loop stability whatever is the duty cycle needed by the application.
The converter is able to work either in full power mode or in low frequency dimming mode.
The device includes an internal low drop voltage regulator, that can be used to supply a microcontroller, and a reset pin, that is useful for resetting the microcontroller at the start up and every time that the regulated output voltage falls down below an established voltage threshold.