TB9931 Description
Features ± Constant output current ± Large step-down ratio ± Unity power factor ± Low input current harmonic distortion ± Fixed frequency or fi xed off-time operation ± Internal 450V linear regulator ± Input and output current sensing ± Input current limit ± Enable, PWM and phase dimming Applications ± Offl ine LED lamps and fi xtures ± Street lamps ± Traffi c signals ± Decorative lighting General Description The...