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AC-DC Offline LED Driver


Package | PIN: DGS | 10
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $0.94
10-24 $0.84
25-99 $0.78
100-249 $0.68
250-499 $0.63
500-749 $0.53
750-999 $0.43
1000+ $0.40


  • Application Voltage Range: 80 VAC to 277 VAC
  • Capable of Controlling LED Currents
    Greater than 1 A
  • Adjustable Switching Frequency
  • Low Quiescent Current
  • Adaptive Programmable Off-Time Allows for
    Constant Ripple Current
  • Thermal Shutdown
  • No Flicker at 120 Hz
  • Low-Profile 10-Pin VSSOP Package
    or 8-Lead SOIC Package
  • Patented Drive Architecture

Texas Instruments  LM3444MM/NOPB

The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs. The high-frequency capable architecture allows the use of small external passive components. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and VCC undervoltage lockout. The LM3444 is available in a low profile 10-pin VSSOP package or an 8-lead SOIC package.