BA2903YF-LBH2

Overview

The BA2903YF-LBH2 is a dual-channel ground-sense analog comparator manufactured by ROHM Semiconductor. It operates on a single supply voltage ranging from 2V to 36V or dual supplies of ±1V to ±18V. The device features an open-collector output type and supports standard comparator pin assignments. Key electrical characteristics include a typical response time of 1.3µs, a maximum input offset voltage of 5mV, and a typical input bias current of 50nA. It provides a typical output current of 16mA per channel with a supply current of approximately 0.6mA. The component is qualified under AEC-Q100 standards for automotive applications and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Ground sensing capability allowing common-mode input voltage range to include ground level
• Wide operating supply voltage range supporting both single and dual power sources
• Internal electrostatic protection circuit with high human body model tolerance
• Automotive grade qualification ensuring reliability in harsh environments

Applications

• Engine control units in automotive systems
• Electric power steering mechanisms
• Antilock brake systems (ABS)
• General purpose voltage comparison circuits requiring ground reference

Procurement Notes

Verify the specific suffix LBH2 against official ROHM documentation to confirm package details and tape-and-reel specifications. Confirm the NRND status implications for long-term supply continuity. Ensure compatibility with existing PCB footprints and reflow soldering profiles specified in the datasheet. Cross-reference the AEC-Q100 grade requirements with system-level functional safety standards before integration.

Selection Notes

Select this component when ground-referenced signal detection is required within a wide voltage window. The low input bias current makes it suitable for high-impedance sensor interfaces. Verify that the open-collector output configuration aligns with the downstream logic levels and pull-up resistor requirements. Consider the thermal performance within the SOP-8 package for the intended ambient conditions.

Part Context

This part belongs to the BA2903 series of ground-sense comparators designed for automotive electronics. It shares architectural similarities with other members like the BA2901 and BA2904 but differs in channel count and specific electrical parameters. The series is engineered to meet stringent automotive reliability standards while maintaining low power consumption.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.