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.


  • 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)


  • High voltage LED strings >100V with ground referred current sense
  • Grounded anode LEDs
  • Accurate current limited voltage regulators

Typical Application

Application Circuit Diagram - Analog Devices Inc. LT3761 LED Controllers
Publicado: 2017-04-24 | Actualizado: 2022-10-24