LM2903BTQDGKRQ1

Overview

The LM2903BTQDGKRQ1 is an automotive-grade dual differential comparator from the LM2903B-Q1 family, manufactured by Texas Instruments. It operates on a single or dual supply voltage ranging from 2V to 36V and features an open-drain output compatible with TTL, MOS, and CMOS logic. The device is qualified under AEC-Q100 Grade 1 standards for operation within an ambient temperature range of -40°C to +125°C. Key electrical characteristics include a typical quiescent current of 600µA, a maximum input offset voltage of ±4mV across the full temperature range, and a typical propagation delay of 300ns. It provides improved electrostatic discharge protection with 2kV HBM capability.

Feature Summary

• Qualified for automotive applications meeting AEC-Q100 Grade 1 specifications
• Features low input bias current and low input offset voltage for precision comparison
• Includes dedicated ESD protection on all pins for enhanced reliability
• Open-drain output allows flexible logic level shifting and AND functionality

Applications

• Hybrid electric vehicle (HEV) and electric vehicle (EV) power train systems
• Automotive infotainment and instrument cluster circuits
• Body control module signal processing
• Industrial equipment monitoring
• Appliance control logic

Procurement Notes

Verify that the component matches the specific LM2903BTQDGKRQ1 designation, ensuring it corresponds to the 'B' version with VSSOP-8 packaging. Confirm the presence of the Q1 suffix indicating AEC-Q100 Grade 1 qualification (-40°C to +125°C). Check for authenticity through authorized distribution channels to ensure compliance with automotive quality standards and functional safety documentation availability.

Selection Notes

Select this component when designing cost-sensitive automotive systems requiring drop-in replacement for standard comparators but with improved performance metrics. It is suitable for applications demanding lower supply current, reduced propagation delay, and higher ESD tolerance compared to previous generations. Ensure the design accommodates the open-drain output requirement by providing appropriate pull-up resistors.

Part Context

This device belongs to the LM2903-Q1 family of dual comparators designed for robust performance in harsh environments. The 'B' variant represents a next-generation update offering superior electrical characteristics over the standard LM2903-Q1, including tighter offset voltage specifications and enhanced static discharge resilience while maintaining pin compatibility.

Replacement Considerations

LM2903QDRQ1