NSL21610-Q1HMSR

Overview

The NSL21610-Q1HMSR is an automotive-grade, single-channel linear constant current LED driver with a maximum output current capability of 450 mA. It features a wide supply voltage range from 5 V to 40 V, enabling direct connection to automotive battery systems. The device incorporates a unique thermal balancing design that utilizes an automatic power balancing loop between the output channel and an external shunt resistor, effectively managing thermal dissipation limits for high-current applications. It supports PWM dimming and includes comprehensive diagnostic functions such as LED open-load detection with auto-recovery and short-to-ground detection with auto-recovery.

Feature Summary

• Thermal balancing design enables high current output by diverting power through an external shunt resistor
• Comprehensive diagnostic capabilities including LED open-load and short-to-ground detection with auto-recovery
• Flexible fault bus configuration options for system-level error handling

Applications

• Automotive exterior rear lighting: position lights, fog lights, stop lights, and taillights
• Automotive miscellaneous exterior lighting: center high-mounted stop lamps, daytime running lamps, turn indicators, door handles, and blind spot detection indicators
• Automotive interior lighting: reading lamps and overhead consoles
• General-purpose LED driver applications

Procurement Notes

Verify component authenticity against NOVOSENSE official documentation before integration. Confirm AEC-Q100 Grade 1 qualification status for the specific operating temperature range of -40°C to +125°C. Ensure the selected package variant matches the required PCB footprint and thermal performance specifications for the target application environment.

Selection Notes

Select this component for applications requiring high current drive in thermally constrained environments due to its external thermal balancing architecture. Consider the flexible FAULT bus connectivity when designing system-level safety logic. Verify compatibility with the intended PWM dimming frequency and ensure adequate heat sinking for the external shunt resistor to maintain system reliability under continuous operation.

Part Context

The NSL21610-Q1HMSR belongs to the NSL2161x-Q1 series of automotive linear LED drivers developed by NOVOSENSE. This series is designed to address thermal dissipation challenges inherent in linear constant current drivers, allowing for higher current capabilities than traditional solutions without compromising device reliability or requiring complex active cooling mechanisms.

Replacement Considerations

NSL21611-Q1HMSR is a confirmed substitute within the same product family, sharing identical functional characteristics and pinout compatibility.