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ANALOG DEVICES INC. LT3966 Quad Boost LED Driver | New Product Brief

April 30, 2021 by Mouser Electronics

This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.

ANALOG DEVICES INC. LT3966 Quad Boost LED Driver

Analog Devices’ LT3966 is a flexible quad channel boost LED driver for use in applications such as backlighting and heads up displays. The LT3966 provides 4 independent LED drivers, each consisting of a 60V current mode boost converter with a 1.6A DMOS switch and high side gate driver as well as independent shutdown and standby control. The high side driver can provide fault protection as well as PWM dimming, with an internal 13-bit PWM generator that can be programmed via I2C. The LT3966 has a built-in 11-input, 8-bit ADC to monitor each channel’s output voltage and current, plus the input voltage and two external inputs. The drivers can operate from a 3V to 60V supply, with an internal 3V regulator and 5V tolerant I/O pins.  They’re housed in a 6mm x 6mm thermally enhanced QFN package.

  • Four independent LED driver channels
    • 1.6A, 60V current mode boost converter
    • 300kHz to 4MHz switching frequency
  • High-side gate driver and current sensing
    • Enables PWM dimming and fault control
  • 8192:1 True Color PWM™ Dimming
    • Programmable via I2C
  • 11-channel, 8-bit ADC
    • Monitors ILEDx, VFBx, VIN, and two external inputs
  • Input Voltage: 3V to 60V
    • Integrated 3V LDO drives internal circuitry
    • 5V tolerant I/O pins
  • Package: 6mm x 6mm QFN-40

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