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LT3761 Datasheet

LT3761 Datasheet

60VIN LED Controller with Internal PWM Generator
Part No.: LT3761
Page: 32 Pages
Size: 491 KB
Manufacturer: Linear Technology
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Views: 2
Update Time: 2023-11-30 11:40:55
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LT3761 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT3761EMSE#PBF Tube 37 3761 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT3761EMSE#TRPBF Reel 2500 3761 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT3761EMSE#TRMPBF Reel 500 3761 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT3761IMSE#PBF Tube 37 3761 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT3761IMSE#TRPBF Reel 2500 3761 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT3761IMSE#TRMPBF Reel 500 3761 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT3761HMSE#PBF Tube 37 3761 1 16 -40°C ~ 150°C 16-Lead Plastic MSOP  
LT3761HMSE#TRPBF Reel 2500 3761 1 16 -40°C ~ 150°C 16-Lead Plastic MSOP  
LT3761HMSE#TRMPBF Reel 500 3761 1 16 -40°C ~ 150°C 16-Lead Plastic MSOP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT3761 Datasheet(PDF)

LT3761 Datasheet(Picture)

LT3761 Features

  • 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
  • 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
  • Open LED Status Pin (LT3761)

LT3761 Applications

  • High Voltage LED Strings >100V with Ground Referred Current Sense
  • Grounded Anode LEDs
  • Accurate Current Limited Voltage Regulators

LT3761 Description

The LT3761 is a DC/DC controller designed to operate as a constant-current source and constant-voltage regulator. It features a programmable internal PWM dimming signal. The LT3761 is ideally suited for driving high current LEDs, but also has features to make it 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. A voltage feedback pin serves as the input for several LED protection features, and also makes it possible for the converter to operate as a constant-voltage source. A frequency adjust pin allows the user to program the frequency from 100kHz to 1MHz to optimize efficiency, performance or external component size. The LT3761 senses output current at the high side or at the low side of the load. The PWM input can be configured to self-oscillate at fixed frequency with duty ratio programmable from 4% to 96%. When driven by an external signal, the PWM input provides LED dimming ratios of up to 3000:1. The CTRL input provides additional analog dimming capability.

The LT3761 senses output current at the high side or at the low side of the load. The PWM input can be configured to self-oscillate at fixed frequency with duty ratio programmable from 4% to 96%. When driven by an external signal, the PWM input provides LED dimming ratios of up to 3000:1. The CTRL input provides additional analog dimming capability.

LT3761 Datasheet Related Parts

Part Number Description
LT3755 High Side 40V, 1MHz LED Controller with True Color 3000:1 PWM Dimming
LT3755-1 High Side 40V, 1MHz LED Controller with True Color 3000:1 PWM Dimming
LT3755-2 High Side 40V, 1MHz LED Controller with True Color 3000:1 PWM Dimming
LT3756 High Side 100V, 1MHz LED Controller with True Color 3000:1 PWM Dimming
LT3756-1 High Side 100V, 1MHz LED Controller with True Color 3000:1 PWM Dimming
LT3756-2 High Side 100V, 1MHz LED Controller with True Color 3000:1 PWM Dimming
LT3796 High Side 100V, 1MHz LED Controller with True Color 3000:1 PWM Dimming, PMOS Disconnect FET Driver, Input Current Limit and Input/Output Current Reporting
LT3956 High Side 80V, 3.5A, 1MHz LED Driver with True Color 3,000:1 PWM Dimming
LT3754 60V, 1MHz Boost 16-Channel 40mA LED Driver with True Color 3000:1 PWM Dimming and 2% Current Matching
LT3518 2.3A, 2.5MHz High Current LED Driver with 3000:1 Dimming with PMOS Disconnect FET Driver
LT3478 4.5A, 2MHz High Current LED Driver with 3000:1 Dimming
LT3478-1 4.5A, 2MHz High Current LED Driver with 3000:1 Dimming
LT3791 60V, Synchronous Buck-Boost 700kHz LED Controller
LT3791-1 60V, Synchronous Buck-Boost 700kHz LED Controller
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