Onsemi NCL30073 | Demoboard NCL30073LED1GEVB

Description

The NCL30073 is a highly integrated PWM controller capable of delivering a rugged and high performance LED converter in a tiny TSOP−6 package. With a supply range up to 24 V, the controller hosts a 65 kHz switching circuitry operated in peak current mode control. When the voltage on FB pin decreases, the controller enters skip cycle while limiting the peak current. Over Power Protection (OPP) is a difficult exercise especially when no−load standby requirements drive the converter specifications. The ON proprietary integrated OPP lets you harness the maximum delivered power without affecting your standby performance simply via two external resistors. An Over Voltage Protection is also combined on the same pin but also on the VCC line. They offer an efficient protection in case of adverse open loop operation. Finally, a timer−based short−circuit protection offers the best protection scheme, letting you precisely select the protection trip point without caring of a loose coupling between the auxiliary and the power windings.

Features

• Fixed−frequency 65 kHz Current−mode Control Operation
• Internal and Adjustable Over Power Protection (OPP) Circuit
• Internal Ramp Compensation
• Internally Fixed 4 ms Soft−start
• 115 ms Timer−based Auto−recovery Short−circuit Protection
• Protection − Autorecovery
• OVP by VCC
• OIP
• OTP − Foldback
• Short Circuit
• Up to 24 V VCC Operation
• Extremely Low No−load Standby Power
• Isolated and Non−isolated Outputs
• Good Regulation – 5%
• High Power Factor > 0.9
• Single Winding Inductor
• Low Parts Count
• EPS 2.0 Compliant
• Pb−Free Devices
• +300 mA/ −500 mA Source/Sink Drive Capability

Typical applications

• Multiple Topology Support: Buck, Buck Boost, Flyback, Phase Cut Dimmer Compatible – LE or TE Types
• Dimmable Retrofit and Low Power Fixture LED Applications

More information

• Datasheet
• IC product information