LM3464/LM3464A LED Driver

LED driver with dynamic headroom control and thermal control interfaces from Texas Instruments

LM3464/LM3464A LED DriverTexas Instruments' LM3464/LM3464A is a 4-channel high voltage current regulator that provides a simple solution for LED lighting applications. The LM3464/LM3464A provides four individual current regulator channels and works in conjunction with external N-channel MOSFETs and sense resistors to give accurate driving current for every LED string. Additionally, the Dynamic Headroom Control (DHC) output can be interfaced to the external power supply to adjust the LED supply voltage to the lowest level that is adequate to maintain all the string currents in regulation, yielding the optimal overall efficiency.

Features
  • Wide input voltage range
    • 12 V-80V (LM3464)
    • 12 V–95V (LM3464A)
  • Dynamic headroom control ensures maximum efficiency
  • 4 output channels with individual current regulation
  • High channel to channel accuracy
  • Digital PWM/analog dimming control interface
  • Resistor programmable dimming frequency & minimum duty cycle (analog dimming mode)
  • Direct interface to thermal sensor
  • Fault detection
  • Over temperature protection
  • Thermal shutdown
  • Under voltage lockout
  • Thermal enhanced eTSSOP-28 package
Applications
  • Streetlights
  • Solid state lighting solutions

LED Driver

ImageManufacturer Part NumberDescriptionAvailable Quantity
LM3464MH/NOPB datasheet linkIC LED DRIVER CTRLR DIM 28HTSSOPLM3464MH/NOPBIC LED DRIVER CTRLR DIM 28HTSSOP816 - Immediate
LM3464MH/NOPB product page link

Evaluation Board

ImageManufacturer Part NumberDescriptionAvailable Quantity
LM3464EVAL/NOPB datasheet linkBOARD EVAL LM3464LM3464EVAL/NOPBBOARD EVAL LM34644 - Immediate
74 - Factory Stock
LM3464EVAL/NOPB product page link
Published: 2011-01-24