Onsemi NCL30080

Beschreibung

The NCL30080 is a PWM current mode controller targeting isolatedflyback and non−isolated constant current topologies. The controlleroperates in a quasi−resonant mode to provide high efficiency. Thanksto a novel control method, the device is able to precisely regulate aconstant LED current from the primary side. This removes the needfor secondary side feedback circuitry, biasing and an optocoupler.

The device is highly integrated with a minimum number of externalcomponents. A wide VCC range simplifies the design process andallows a single design to support a wide LED forward voltage range. Arobust suite of safety protection is built in to simplify the design. Thisdevice is specifically intended for very compact space efficient designs.

Eigenschaften

• Quasi−resonant Peak Current−mode Control Operation
• Primary Side Sensing (no optocoupler needed)
• Wide VCC Range
• Precise LED Constant Current Regulation ±1% Typical
• Line Feed−forward for Enhanced Regulation Accuracy
• Low LED Current Ripple
• 250 mV ±2% Guaranteed Voltage Reference for Current Regulation
• ~ 0.9 Power Factor with Valley Fill Input Stage
• Low LED Current Ripple
• Source 300 mA / Sink 500 mA Totem Pole Driver with 12 V GateClamp
• Low Start−up Current (13 A typ.)
• Small Space Saving Low Profile Package
• Wide Temperature Range of −40 to +125°C
• Pb−free, Halide−free MSL1 Product
• Robust Protection Features
• Over Voltage / LED Open Circuit Protection
• Secondary Diode Short Protection
• Output Short Circuit Protection
• Shorted Current Sense Pin Fault Detection
• Latched and Auto−recoverable Versions
• Brown−out
• VCC Under Voltage Lockout
• Thermal Shutdown

Typische Anwendungen

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

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers