30-60 WATTS SINGLE ODESCRIPTION
   The PT6978X is a single-stage buck controller that achieves high power factor and accurate current for LED lighting applications. Integrated 500V (or 650V) MOSFET to decrease physical volume.

FEATURES
• Integrated 500V (650V) MOSFET.
• High PF≥0.9 with single stage conversion.
• Real-current control technique achieves accurate
   constant LED current.
• Quasi-Resonant switching mode to achieve low
   switching losses.
• ± 3% output current accuracy.
• Excellent line regulation and load regulation.
• Low start-up current: 15μA typical.
• Reliable short LED and open LED protection.
• System auto-restart function.
• VCC over voltage protection.
• VCC under voltage protection (UVLO).
• Cycle by cycle current limiting.
• Over temperature protection (OTP).
• SOP8 package.
• DIP8 package.

APPLICATIONS
• LED Bulb Lamp
• LED Tube
• Others Led Lighting