STMicroelectronics HVLED002 High-Performance LED Controller
STMicroelectronics HVLED002 High-Performance Current Mode LED Controllers provide the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes to implement LED drivers. Internally implemented circuits include a trimmed oscillator for the precise duty cycle control, undervoltage lockout, a precision reference trimmed for accuracy at the error amplifier input, a PWM comparator which also provides current-limit control, and a totem-pole output stage designed to the source or sink high peak current. The output stage, suitable for driving N-channel MOSFETs, is low in the off state.
Features
- Trimmed oscillator for precise frequency control
- Oscillator frequency guaranteed at 250kHz
- Current mode operation to 500kHz
- Latching PWM for cycle-by-cycle current limiting
- Internally trimmed reference with undervoltage lockout
- High current totem pole output
- Undervoltage lockout with hysteresis
- Low start-up and operating current
Development Tools
STMicroelectronics EVLMG4L-IBCKFL Evaluation Board
Designed to be connected to a high voltage input DC source to drive one high voltage.
STMicroelectronics STEVAL-LLL008V1 LED Driver Reference Design
LED driver circuit based on the HVLED001B LED Controller, HVLED002 Flyback, and SPSGRFC RF Module.
STMicroelectronics EVLMG4-500WIBCK Evaluation Board
Dimmable LED driver circuit reference design based on the MASTERGAN4, HVLED002, and VIPER06.
Block Diagram
Đã phát hành: 2016-03-29
| Đã cập nhật: 2025-04-03