AN2811 3.5 W，非隔离的离线恒流LED驱动器的基础上VIPER17

AN2811 3.5 W，非隔离的离线恒流LED驱动器的基础上VIPER17

AN2811
Application note
3.5 W non-isolated offline constant-current LED driver
based on VIPER17

Introduction
High brightness LEDs are becoming a prominent source of lighting. Compared to
conventional incandescent bulbs, high brightness LEDs (light emitting diodes) have
advantages in higher light efficacy, much longer life and faster reaction time in a smaller
profile. Since LEDs cannot sustain high voltage stress directly from an AC source, providing
a reliable constant-current source to drive LEDs