[On-Bright Electronics]

DESCRIPTIONS
OB6563 is an active transition-mode (TM) power factor correction (PFC) controller for AC-DC switching mode power supply applications.
OB6563 features an internal start-up timer for stand-alone applications, a one quadrant multiplier with THD optimizer for near unity power factor, zero current detector (ZCD) to ensure TM operation, a current sensing comparator with built-in leading-edge blanking, and a totem pole output ideally suited for driving a power MOSFET.

FEATURES
• Transition Mode (TM) Operation
• One quadrant multiplier with THD optimizer
• Low Dynamic OVP Sensing Current Setting
• Low Start-up Current and Operating Current
• Cycle-by-Cycle Current Limiting
• Internal RC Filter
• Trimmed 1.5% Internal Bandgap Reference
• Under Voltage Lockout with Hysteresis
• Dynamic and Static Output Over-Voltage Protection (OVP)
• Internal Start-up Timer for Stand-alone Applications
• Disable Function
• Totem Pole Output with High State Clamping
• System Open Loop Protection
• Proprietary Audio Noise Free Operation
• 9.5V to 28V wide range of VCC voltage

APPLICATIONS
• Electronic Ballast
• AC-DC SMPS