NSIC2020BT3G

Current Regulation/Management Overview

The NSIC2020BT3G is a linear constant current regulator utilizing self-biased transistor (SBT) technology, designed for economical LED current regulation. It operates with a maximum anode-cathode voltage of 120V and dissipates up to 3W of power. The device regulates current at 20mA with a tolerance of ±15%. It features a negative temperature coefficient to prevent thermal runaway and achieves 45% of regulated current at just 0.5V anode-cathode voltage. The component supports both high-side and low-side configurations without external components.

Current Regulation/Management Feature Summary

• Self-biased transistor technology enables precise current regulation across wide voltage ranges.
• Negative temperature coefficient inherently protects LEDs from thermal runaway under extreme conditions.
• Robust 3W power package accommodates higher power applications and provides design flexibility.
• Capable of immediate turn-on with rapid response characteristics at low operating voltages.

Current Regulation/Management Applications

• Automotive side mirror markers
• Instrument panel backlighting
• High-mounted stop lamp (CHMSL)
• Commercial signage

Current Regulation/Management Procurement Notes

Verify the specific suffix against official documentation, as variations such as JBT3G may indicate automotive-grade AEC-Q101 certification or different packaging formats. Confirm that the standard BT3G suffix aligns with commercial grade requirements if automotive qualification is not needed. Ensure compatibility with SMB-2 surface mount packages during sourcing.

Current Regulation/Management Selection Notes

Select this component when a simple, cost-effective solution for LED current regulation is required without complex control circuitry. It is suitable for AC offline applications due to its 120V rating. Consider the 20mA output current and 3W power dissipation limits to ensure adequate thermal management in the final enclosure design.

Current Regulation/Management Part Context

This device belongs to the NSIC2020J series of constant current regulators from onsemi. It shares functional similarities with Constant Current Diodes (CCDs) but offers enhanced performance through SBT technology. The series includes variants like NSIC2030JBT3G and NSIC2050JBT3G for different current requirements.

Current Regulation/Management Replacement Considerations

NSIC2030JBT3G: Offers 30mA regulation instead of 20mA. NSIC2050JBT3G: Offers 50mA regulation. NSV-prefix versions provide AEC-Q101 automotive qualification.