NCL30082B2DR2G

Overview

The NCL30082B2DR2G is a dimmable quasi-resonant primary side current mode controller designed for LED lighting applications. It operates in flyback topology with an output current of 500 mA and a fixed switching frequency of 65 kHz. The device supports adjustable output voltage and accepts an input supply voltage of 8.8 V. It features thermal foldback protection and is housed in an SOIC-8 package, operating within a temperature range of -40°C to +125°C.

Feature Summary

• Enables precise primary-side LED current regulation without secondary feedback circuits or optocouplers.
• Supports both analog and digital dimming inputs for flexible control integration.
• Integrates thermal foldback protection to manage junction temperature under varying load conditions.

Applications

• Isolated AC-DC offline switch-mode power supplies for LED drivers
• Flyback converter topologies requiring primary-side sensing
• Non-isolated buck-boost constant current LED driver designs

Procurement Notes

Verify the specific suffix B2 against official onsemi documentation to confirm pinout compatibility and internal circuit variations relative to other NCL30082 variants. Ensure the component meets RoHS compliance requirements for your target market. Confirm moisture sensitivity level handling procedures during assembly to prevent package damage.

Selection Notes

Select this controller for designs prioritizing high efficiency through quasi-resonant operation and reduced component count via primary-side regulation. Consider the 65 kHz fixed frequency when designing magnetics for EMI constraints. Evaluate the need for external dimming interface circuitry based on the chosen analog or digital control method.

Part Context

This component belongs to the NCL30082 series of LED lighting driver ICs from onsemi. The series focuses on simplifying design by eliminating secondary feedback loops while maintaining accurate current regulation. It serves as a core control element in modern energy-efficient LED ballasts and drivers.

Replacement Considerations

NCL30082DDR2G is listed as a parameter-equivalent alternative. Verify functional equivalence and pin compatibility before substitution.