Analog Devices Inc. LT3761 LED控制器
Linear Technology/Analog Devices LT3761 LED Controllers are DC/DC controllers that operate as a constant-current source and constant-voltage regulator. The LT3761 feature a programmable internal PWM dimming signal. The controllers are ideally suited for driving high current LEDs. The LT3761 are also suitable for charging batteries and supercapacitors. The fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages.
The Analog Devices LT3761 is also suitable for charging batteries and supercapacitors. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages.
特點
- 3000:1 True Color PWM™ dimming for LEDs
- 4.5V to 60V VIN range
- 0V to 80V rail-to-rail current sense range
- Programmable PWM dimming signal generator
- Constant current (±3%) and constant-voltage (±2%) regulation
- Analog dimming
- Drives LEDs in Boost, SEPIC, Inverting, Buck Mode, Buck-Boost Mode, or Flyback Configuration
- Output short-circuit protected boost
- Open LED protection
- 100kHz to 1MHz adjustable switching frequency
- Programmable VIN UVLO with hysteresis
- C/10 indication for battery chargers
- <1μA shutdown current
- Thermally enhanced 16-lead MSOP package
- Open LED status pin (LT3761)
- Frequency synchronization (LT3761-1)
應用
- High voltage LED strings >100V with ground referred current sense
- Grounded anode LEDs
- Accurate current limited voltage regulators
Typical Application
Datasheets
發佈日期: 2017-04-24
| 更新日期: 2022-10-24