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IC manufacturers O2 Micro International Ltd

IC manufacturers (84)

O2 Micro International Ltd OZ9992A

Intelligent Lighting Family Product Guide


TopologyPower Factor Correction
Input voltage85-265 V
Output 126 V / 0.25 A


OZ9992/92A are controllers for offline AC/DC flyback converter applicationsthat use quasi-resonant power conversion technology. One application using OZ9992/92A drives high power LEDs using compensated peak current mode control to regulate the average LED current.

OZ9992/92A require very low start-up current, which maximizes the efficiency of the converter. Each IC provides a proprietary Free Dimming technology using a non-dimming ON/OFF wall switch.


  • Quasi-resonant AC/DC converter controller for high brightness LEDs
  • Three-step analog dimming control using wall switch
  • Low start-up and operating current, maximizing conversion efficiency
  • Peak current mode control simplifies circuit design
  • Under-voltage lockout with hysteresis
  • Minimum off-time control for light-load operation, maximizing efficiency
  • Constant output power for universal AC input
  • Provides complete protection functions:

    -Maximum gate drive output at 18.0V

    -Over-voltage for IC bias voltage-Cycle-by-cycle current limit

    -LED short circuit; output over-voltage; and internal thermal

Typical applications

  • Power Adapter/Battery Charger
  • TV/Monitor Power Supplie
  • General Lighting


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Power Inductor
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Order Code Data­sheet Downloads Product series Samples