NSI50150ADT4G

Current Regulation/Management Overview

The NSI50150ADT4G is an adjustable constant current regulator and LED driver from onsemi, utilizing self-biased transistor technology. It provides a regulated current range of 150 mA to 350 mA with a typical value of 150 mA at 7.5 V. The device supports a maximum voltage of 50 V and dissipates up to 4.2 W in its DPAK-3 package. It features a negative temperature coefficient for thermal protection and operates within a temperature range of -55 °C to +150 °C.

Current Regulation/Management Feature Summary

• Utilizes self-biased transistor technology for stable current regulation across wide voltage ranges.
• Features a negative temperature coefficient that reduces current as temperature rises to prevent thermal runaway.
• Offers adjustable current settings via the R_adj pin or allows floating for fixed operation.
• Provides immediate turn-on response with regulation starting at low anode-cathode voltages.

Current Regulation/Management Applications

• LED lighting applications requiring simple and durable current regulation
• Automotive lighting systems meeting AEC-Q101 standards
• High-power LED designs needing thermal protection against heat runaway

Current Regulation/Management Procurement Notes

Verify component authenticity by checking manufacturer markings and datasheet specifications. Ensure the DPAK-3 package matches design requirements. Confirm compliance with RoHS and UL94-V0 standards for intended use. Validate electrical parameters against application needs before integration.

Current Regulation/Management Selection Notes

Select this component when a simple, cost-effective solution for LED current regulation is required. Consider the adjustable current range and thermal protection features for designs sensitive to temperature variations. Ensure the power dissipation capabilities align with the PCB layout and thermal management strategy.

Current Regulation/Management Part Context

This part belongs to the NSI50 series of constant current regulators designed for LED applications. It complements other models like the NSI50350ADT4G, which offers higher current ratings. The series focuses on providing reliable, self-regulating solutions for various LED driving scenarios without complex control circuitry.

Current Regulation/Management Replacement Considerations

The NSI50350ADT4G serves as a related alternative within the same product family, offering a different current rating. Verify compatibility regarding package dimensions and electrical characteristics when considering substitutes.