NSI45015WT1G

Current Regulation/Management Overview

The NSI45015WT1G is a single-channel LED lighting driver IC from onsemi, designed for constant current regulation. It operates with a maximum supply voltage of 45 V and delivers an output current of 15 mA, with high-level and low-level currents specified at 18 mA and 12 mA respectively. The device supports both Boost and Buck topologies and functions at a working frequency of 1 MHz. It features adjustable output voltage and is housed in an SOD-123 package suitable for surface mount installation. The component operates within a temperature range of -55 °C to +150 °C, with a power dissipation rating of 208 mW.

Current Regulation/Management Feature Summary

• Provides stable constant current regulation using self-biased transistor technology.
• Features negative temperature coefficient to prevent thermal runaway in LED applications.
• Capable of withstanding voltage surges common in automotive and industrial environments.

Current Regulation/Management Applications

• LED indicator circuits
• Automotive lighting systems
• Industrial signage illumination

Current Regulation/Management Procurement Notes

Verify the specific suffix 'T1G' against the manufacturer's datasheet to confirm RoHS compliance and packaging details. Ensure the ordering part number matches the exact electrical specifications required for the target circuit design. Cross-reference the component marking code with official documentation to authenticate the source and avoid counterfeit components during procurement.

Current Regulation/Management Selection Notes

Select this component when a compact, single-channel solution is needed for low-current LED regulation. The SOD-123 package offers space efficiency for dense PCB layouts. Consider the 45 V voltage rating and 15 mA current capability to ensure compatibility with the load requirements. Verify that the operating temperature range meets the environmental conditions of the final application.

Current Regulation/Management Part Context

This device belongs to the NSI45015W series of linear constant current regulators. It is engineered specifically for driving LEDs where precise current control is critical for performance and longevity. The series utilizes advanced semiconductor processes to achieve reliable operation across wide voltage ranges while maintaining a small physical footprint.

Current Regulation/Management Replacement Considerations

NSV45015WT1G is a documented substitute variant within the same product family.