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.
Feature
- 3000:1 True Color PWM™ Dimming for LEDs
- Wide VIN Range: 4.5V to 60V
- Rail-to-Rail Current Sense Range: 0V to 80V
- 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 and Reporting
- Adjustable Switching Frequency: 100kHz to 1MHz
- Programmable VIN UVLO with Hysteresis
- C/10 Indication for Battery Chargers
- Low Shutdown Current: <1μA
- Thermally Enhanced 16-Lead MSOP Package
Applications
- High Voltage LED Strings >100V with Ground Referred Current Sense
- Grounded Anode LEDs
- Battery and SuperCap Chargers
- Accurate Current Limited Voltage Regulators
