Analog Devices Inc. LT3761 LED Controllers
Analog Devices Inc. LT3761 LED Controllers are DC/DC controllers that operate as a constant-current source and constant-voltage regulator. The LT3761 features a programmable internal PWM dimming signal. The controllers are ideally suited for driving high-current LEDs.
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.
Features
- 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)
Applications
- High voltage LED strings >100V with ground referred current sense
- Grounded anode LEDs
- Accurate current limited voltage regulators
Typical Application
Datasheets
Publicado: 2017-04-24
| Actualizado: 2022-10-24