O2 Micro International Ltd OZ9992A

Beschreibung

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.

Eigenschaften

• 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

Typische Anwendungen

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

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers