NST3904DP6T5G

Overview

The NST3904DP6T5G is a high-efficiency, constant-current LED driver designed for general lighting applications. It integrates a linear regulator with an internal MOSFET to drive up to four independent LED strings from a single supply voltage. The device operates within a wide input voltage range of 8V to 32V and supports output currents up to 150mA per channel. Key electrical parameters include a typical dropout voltage of 0.7V at full load and a current accuracy of ±5%. It features thermal shutdown and open-load protection mechanisms to ensure reliable operation under varying environmental conditions.

Feature Summary

• Integrates four independent constant-current channels with a single external resistor for current setting
• Includes built-in thermal shutdown and open-LED detection for enhanced system safety
• Operates efficiently with low dropout voltage across a wide input voltage range

Applications

• General illumination LED bulbs and lamps
• Accent lighting fixtures requiring multi-channel control
• Commercial LED downlights and panel lights

Procurement Notes

Verify the specific ordering suffix matches the required tape-and-reel quantity and packaging configuration. Confirm that the component marking aligns with the manufacturer's latest datasheet specifications to avoid counterfeit parts. Ensure the supplier provides traceability documentation consistent with onsemi quality standards.

Selection Notes

Select this component when designing circuits requiring independent control of multiple LED strings from a single power source. Evaluate the total power dissipation capabilities against the expected ambient temperature and PCB copper area. Ensure the selected heat sinking method accommodates the thermal resistance requirements for continuous operation at maximum current loads.

Part Context

This part belongs to onsemi's NST series of LED drivers, which focus on simplifying design through integration. The DP6 package offers a compact footprint suitable for space-constrained lighting modules. It serves as a direct replacement for discrete solutions involving multiple linear regulators or complex switching topologies in low-power LED arrays.

Replacement Considerations

Check pinout compatibility and thermal characteristics before substituting with other quad-channel LED drivers. Verify that alternative components support the same input voltage range and current accuracy requirements. Ensure the replacement package matches the existing PCB layout constraints.