LM2903FVJ-E2

Overview

The LM2903FVJ-E2 is a dual-channel ground sense analog comparator manufactured by ROHM Semiconductor. It operates within a supply voltage range of 3 V to 36 V and features an open collector output type with a response time of 1 µs. The device draws a typical operating current of 600 µA per channel and provides an output current capability of 16 mA. Key electrical parameters include an input offset voltage (Vos) of 4.5 mV maximum, an input bias current (Ib) of 250 nA, and a power dissipation rating of 680 mW. It is housed in an 8-pin TSSOP-B package and supports an extended operating temperature range from -40 °C to +125 °C.

Feature Summary

• Ground sense operation allows input signals to extend down to the negative supply rail (VSS).
• Wide operating supply voltage range supports single or split power supply configurations.
• Open collector output structure facilitates flexible interfacing with various logic families.

Applications

• General purpose voltage monitoring circuits
• Over-voltage protection systems
• Threshold detection applications

Procurement Notes

Verify the specific suffix 'E2' against the manufacturer's latest documentation to confirm compliance with current environmental standards and pinout definitions. Ensure the TSSOP-B-8 package dimensions match the target PCB footprint requirements. Confirm that the open-collector output configuration aligns with the pull-up resistor requirements of the downstream circuitry. Validate the operating temperature range suitability for the intended deployment environment.

Selection Notes

Select this component when ground-referenced input signals are required without level shifting. The low quiescent current makes it suitable for battery-powered applications where power efficiency is critical. The wide supply voltage range accommodates systems ranging from 3 V to 36 V. Consider the 1 µs response time for speed-sensitive designs. The open-collector output requires external pull-up components to define the high logic level.

Part Context

This part belongs to the LM2903 series of dual comparators from ROHM Semiconductor. It shares functional similarities with other industry-standard dual comparators but is distinguished by its specific ground-sense input capability and ROHM's packaging technology. The series is designed for general-purpose comparison tasks requiring reliable performance across a wide temperature and voltage range.

Replacement Considerations

Cross-reference with LM2903 variants from other manufacturers if sourcing constraints exist. Verify pin compatibility and electrical parameter equivalence before substitution. Note that while functionally similar, differences in input bias current or offset voltage may impact precision applications.