NCL30188 Series

Power Factor Corrected Quasi-Resonant Primary Side Current Mode Controller for LED Lighting

Catalog

Power Factor Corrected Quasi-Resonant Primary Side Current Mode Controller for LED Lighting

Part	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Current - Output / Channel	Type	Voltage - Supply (Max) [Max]	Number of Outputs	Dimming	Internal Switch(s)	Topology	Voltage - Supply (Min) [Min]	Applications
ON Semiconductor NCL30188BDR2G	8-SOIC	-40 °C	125 ¯C	8-SOIC	3.9 mm	0.154 in	Surface Mount	500 mA	AC DC Offline Switcher	25.5 V	1			Flyback SEPIC Step-Down (Buck) Step-Up (Boost)	8.8 V
ON Semiconductor NCL30188ADR2G	8-SOIC	-40 °C	125 ¯C	8-SOIC	3.9 mm	0.154 in	Surface Mount		AC DC Offline Switcher	25.5 V	1			Flyback SEPIC Step-Down (Buck) Step-Up (Boost)	8.8 V	Lighting

Catalog

Power Factor Corrected Quasi-Resonant Primary Side Current Mode Controller for LED Lighting

Key Features

• Constant Current Control with Primary Side Feedback

• Precise Current Regulation Accuracy

• Power Factor Correction with low harmonic distortion

• Line Feedforward for Enhanced Regulation Accuracy

• Wide Vcc operating range

• User Programmable Thermal Foldback

• Latched and Auto-recoverable versions

• Secondary Diode Short Protection

• VCC Undervoltage and overvoltage protection

• Open and Shorted LED Protection

Description

The NCL30188 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.