LM2903EYFJ-CE2

Overview

The LM2903EYFJ-CE2 is a dual ground sense comparator from ROHM Semiconductor’s EMARMOUR series, designed for automotive applications. It operates on a single or dual power supply with a voltage range of 3V to 36V. The device features an open collector output capable of sourcing 16mA per channel. Key electrical parameters include a typical response time of 1.3µs, a maximum input offset voltage of 5mV, and a typical circuit current of 0.6mA. It is qualified under AEC-Q100 Grade 1 standards and supports an operating temperature range from -40°C to +150°C.

Feature Summary

• Features high EMI immunity performance verified by ISO 11452-2 testing, suppressing output voltage fluctuations within ±300mV across noise frequencies.
• Supports ground sense input operation, allowing the input voltage to operate from almost GND level up to VCC-1.5V.
• Integrated into the EMARMOUR series, utilizing specific circuit design and layout technologies to reduce external noise filtering requirements.

Applications

• Engine control units in automotive systems
• Electric Power Steering (EPS) systems
• Anti-lock Braking Systems (ABS)

Procurement Notes

Verify the specific suffix CE2 against the official ROHM datasheet to confirm package type and tape/reel specifications. Ensure the order matches the AEC-Q100 Grade 1 qualification status required for your target automotive application. Confirm that the SOP-J8 package dimensions align with your PCB footprint constraints before finalizing procurement.

Selection Notes

Select this component when high electromagnetic interference resistance is critical for system reliability. It serves as a direct upgrade for standard comparators in noisy environments like engine compartments. Consider the 150°C maximum junction temperature if operating in high-heat zones. The low supply current makes it suitable for battery-powered or efficiency-sensitive automotive circuits.

Part Context

This part belongs to the LM2903 family of dual ground sense comparators. The EMARMOUR designation indicates enhanced noise tolerance compared to standard variants. It shares pin compatibility with other LM2903 series devices but offers superior EMI performance. The SOP-J8 package provides a compact solution for dense automotive PCB layouts while maintaining thermal stability.

Replacement Considerations

Direct substitutes include LM2903EYFVM-C (MSOP8 package) and LM2903EYFJ-C (standard version). Verify functional safety support requirements if replacing in existing designs. Ensure the replacement maintains the same AEC-Q100 grade and operating temperature range for automotive compliance.