NCV7694MW0R2G

Overview

The NCV7694MW0R2G is an automotive-grade safety controller designed to drive infrared LED strings for image sensor illumination. It regulates constant current output via an external MOSFET and a feedback resistor, setting the current based on a 300 mV internal reference. The device incorporates hardware interlocks to prevent retinal damage by limiting maximum exposure time (TON) and flash frequency using external resistors. It detects open loads, short circuits to ground or VS, under-voltage, and over-temperature conditions, reporting faults via an open-drain DIAG pin.

Feature Summary

• ASIL-A compliant safety design with ISO26262 compliance for eye protection
• Constant current LED string drive with external MOSFET control
• Hardware-based limits for maximum exposure time and flash frequency
• Diagnostic detection for Open Load, Short to GND, and Short to VS
• 10-pin DFN package with wettable flank for enhanced optical inspection

Applications

• In-cabin monitoring sensors
• Infrared illumination for automotive cameras
• Machine vision systems
• Surveillance systems

Procurement Notes

Verify the specific ordering suffix MW0R2G corresponds to the 2500-unit tape and reel packaging configuration. Confirm that the 10-DFNW (3x3) package with exposed pad matches the thermal and mechanical requirements of the target PCB layout. Ensure AEC-Q100 qualification status meets the specific automotive grade requirements of the end application.

Selection Notes

Select external resistors RETL and RFRL to define the maximum exposure time and frame rate limits according to safety standards. Choose an external N-MOSFET capable of handling the required LED current and gate drive voltage from the GATE pin. Ensure the feedback resistor R1 sets the desired LED current based on the 300 mV FB reference voltage.

Part Context

This component belongs to the NCV7694 series of safety controllers specifically engineered for infrared LED drivers in automotive environments. It serves as a companion device to image sensors, ensuring safe operation by strictly controlling LED power delivery and providing comprehensive fault diagnostics to protect both the system and end users.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Any replacement must be verified against ASIL-A safety integrity levels, pin compatibility, and electrical characteristics such as the 300 mV feedback reference and operating voltage range.