The highly efficient STMicroelectronics L99LD01 constant current LED driver is used in applications such as automotive daytime running lights and LED headlights.
The L99LD01 is manufactured in BCD5S 70V technology and assembled in an LQFP32 package. It is designed for boost, buck-boost and flyback converter topologies. The internal random jitter oscillator can perform low-frequency modulation to extend the RF spectrum of the switching frequency and reduce EMC emissions. Regardless of the duty cycle required by the application, slope compensation ensures good converter loop stability. The converter can work in full power mode or low frequency dimming mode.
The device includes an internal low-dropout regulator (which can be used to power the microcontroller) and a reset pin that can be used to The microcontroller performs a reset. .
