AL16937 Buck Dimmable LED Driver

By Diodes Incorporated 55

AL16937 Buck Dimmable LED Driver

Diodes' AL16937 is a high performance, high power factor, high efficiency, and high current precision buck dimmable LED driver for triac dimmable LED lamp applications. Its topology provides an accurate output current over wide line and load regulation. The wide switching frequency operates at boundary conduction mode (BCM) to ease EMI/EMC design and testing, to meet the latest regulatory standards.

The AL16937 LED driver integrates a 400 V/3 A MOSFET, which is suitable for 120 VAC applications. It has the built-in thermal fold-back protection trigger point to automatically reduce output current. Other protection features enhance LED lighting system's safety and reliability.

The AL16937 dimming curve is compliant with the NEMA SSL6 standard. It applies to a wide range of dimmers, including leading edge and trailing edge dimmer, to achieve deep dimming down to 1%.

The AL16937 is available in SO-7 package.

Features
  • Tight current sense tolerance: ± 3%
  • Low startup current: 100 µA typical
  • Low operation current: 210 µA (switching frequency at 4 kHz)
  • Single winding inductor
  • Wide range of dimmer compatibility
  • Integration of 400 V/3 A MOSFET
  • NEMA SSL6 dimming curve compliant
  • Internal protections
  • Under voltage lockout (UVLO)
  • Leading-edge blanking (LEB)
  • Cycle-by-cycle over current protection (OCP)
  • Output short protection (OSP)
  • Thermal foldback protection (TFP)
  • Over-temperature protection (OTP)
  • SO-7 package
Diodes Advantage Applications
  • Dedicated buck LED driver with single winding inductor:
    • Low BOM cost and small PCB size with buck topology
  • Single-stage triac dimmable solution through tON_MAX control:
    • Good dimmer compatibility for leading edge and trailing edge dimmers with wide dimming range
  • Boundary conduction mode (BCM) operation:
    • Provides higher conversion efficiency and lower EMI issues
  • Mains dimmable LED lamps
  • Offline LED power supply driver

New Products:

AL16937-30BAS7-13

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