Onsemi NCL30088C

Beschreibung

The NCL30088 is an Ac-Dc power factor corrected flyback controller targeting isolated and non−isolated buck-boost/SEPIC constant current LED drivers. The controller operates in a quasi−resonant mode to provide optimal 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, biasing and 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. This device is specifically intended for very compact, space efficient designs.

Eigenschaften

• Quasi−resonant Peak Current−mode Control Operation
• Constant Current Control with Primary Side Feedback
• Tight LED Constant Current Regulation of ±2% Typical
• Power Factor Correction
• Line Feedforward for Enhanced Regulation Accuracy
• Low Start−up Current (13 A typ.)
• Wide Vcc Range
• 300 mA / 500 mA Totem Pole Driver with 12 V Gate Clamp

• Robust Protection Features

  -OVP on VCC

  -Programmable Over Voltage / LED Open Circuit Protection

  -Cycle−by−cycle Peak Current Limit

  -Winding Short Circuit Protection

  -Secondary Diode Short Protection

  -Output Short Circuit Protection

  -Shorted Current Sense Protection

  -User Programmable NTC Based Thermal Foldback

  -Thermal Shutdown

  -Vcc Undervoltage Lockout

  -Brown−out Protection

• Pb−Free, Halide−Free Product
• Four Versions: NCL30088A, B, C and D (See Table 1)

Typische Anwendungen

• LED Bulbs
• Electronic Control Gear for LED Systems
• Integrated LED Drive Electronics
• LED Light Engines
• LED Power Supply Drivers
• LED Tubes

Weiterführende Informationen

• Datenblatt