The NCL30488 is a power factor corrected flyback controller
targeting isolated constant current LED drivers. The controller
operates in a quasi−resonant mode to provide high efficiency. Thanks
to a novel control method, the device is able to tightly regulate a
constant LED current from the primary side. This removes the need
for secondary side feedback circuitry, its biasing and for an
optocoupler.
The device is highly integrated with a minimum number of external
components. A robust suite of safety protection is built in to simplify
the design.

Features
• High Voltage Startup
• Quasi−resonant Peak Current−mode Control Operation
• Primary Side Feedback
• CC / CV Accurate Control Vin up to 320 V rms
• Tight LED Constant Current Regulation of ±2% Typical
• Digital Power Factor Correction
• Analog and Digital Dimming
• Cycle by Cycle Peak Current Limit
• Wide Operating VCC Range
• −40 to + 125°C
• Robust Protection Features
♦ Brown−Out
♦ OVP on VCC
♦ Constant Voltage / LED Open Circuit Protection
♦ Winding Short Circuit Protection
♦ Secondary Diode Short Protection
♦ Output Short Circuit Protection
♦ Thermal Shutdown
♦ Line over Voltage Protection
• This is a Pb−Free Device

Typical Applications
• Integral LED Bulbs
• LED Power Driver Supplies
• LED Light Engines