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Datasheet Linear Technology LT3761-1

ManufacturerLinear Technology
SeriesLT3761-1

60VIN LED Controller with Internal PWM Generator

Datasheets

  • Download » Datasheet PDF, 593 Kb, File uploaded: Oct 2, 2017
    LT3761: 60VIN LED Controller with Internal PWM Generator Data Sheet
    Docket ↓
    LT3761/LT3761-1
    60VIN LED Controller with
    Internal PWM Generator
    Features n n n n n n n n n n n n Description 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: 100V with Ground
    Referred Current Sense
    n Grounded Anode LEDs
    n Accurate Current Limited Voltage Regulators
    n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
    True Color PWM is a trademark of Analog Devices, Inc. All other trademarks are the property of ...

Prices

Packaging

Parametrics

LT3761EMSE-1#PBFLT3761EMSE-1#TRPBFLT3761IMSE-1#PBFLT3761IMSE-1#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC1772ADC1772ADC1772ADC1772A
Design ToolsLTspice FileLTspice FileLTspice FileLTspice File
Dimming3000:1 PWM3000:1 PWM3000:1 PWM3000:1 PWM
Export Controlnononono
FeaturesResistor Set Switching Frequency, Rail-to-Rail Current Sense, Open LED ProtectionResistor Set Switching Frequency, Rail-to-Rail Current Sense, Open LED ProtectionResistor Set Switching Frequency, Rail-to-Rail Current Sense, Open LED ProtectionResistor Set Switching Frequency, Rail-to-Rail Current Sense, Open LED Protection
Frequency, kHz1000100010001000
Ishutdown, µA0.10.10.10.1
Isupply, mA1.81.81.81.8
Max Number of LEDs25+25+25+25+
Monolithicnononono
Number of Outputs1111
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Output Current, A10101010
Switch Current, A25252525
Synchronousnononono
TopologyBuck, Boost, Buck-Boost, Sepic, LED DriverBuck, Boost, Buck-Boost, Sepic, LED DriverBuck, Boost, Buck-Boost, Sepic, LED DriverBuck, Boost, Buck-Boost, Sepic, LED Driver
Vin Max, V60606060
Vin Min, V4.54.54.54.5
Vout Max, V100100100100

Eco Plan

Other Options

LT3761 LT3761

Articles

  • Download » Articles - LT Journal PDF, 2.3 Mb, File published: Oct 18, 2012
    Accurate PWM LED Dimming without External Signal Generators, Clocks or µControllers
    Docket ↓
    Accurate PWM LED Dimming without External Signal
    Generators, Clocks or ВµControllers
    Keith Szolusha LEDs can be dimmed in two ways: analog and pulse-width modulation (PWM) dimming.
    Analog dimming changes LED light output by simply adjusting the DC current in the string,
    while PWM dimming acheives the same effect by varying the duty cycle of a constant
    current in the string to effectively change the average current in the string. Despite its
    attractive simplicity, analog dimming is inappropriate for many applications because it
    loses dimming accuracy by about 25%+ at only 10:1 brightness levels, and it skews the
    color of the LEDs. In contrast, PWM dimming can produce 3000:1 and higher dimming
    ratios (at 100Hz) without any significant loss of accuracy, and no change in LED color.
    The LT3761 combines the simplicity of
    analog dimming with the accuracy of
    PWM dimming by generating its own
    PWM signal. High dimming ratios are
    possible by adjusting a simple DC signal
    at its dimming input—no additional
    PWM-generating microcontrollers, oscillators or signal generators are required.
    The LT3761’s internal PWM signal
    can produce 25:1 dimming, while it
    can still deliver up to 3000:1 dimming with an external PWM signal.
    HIGH POWER LED DRIVER The LT3761 is a high power LED driver
    similar to the LT3755-2 and LT3756-2
    family. It is a 4.5V-to-60V input to ...

Moldel Line

Series: LT3761-1 (4)

Manufacturer's Classification

  • Power Management > Battery Management > Battery Charger IC > Switching Battery Chargers
  • Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers | Step-Down (Buck) LED Drivers | Buck-Boost LED Drivers | Multitopology LED Driver
  • Power Management > Supercapacitor Chargers
  • Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) LED Drivers

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