LM2903BIPWR

Overview

The LM2903BIPWR is a dual differential voltage comparator from Texas Instruments, designed for single-supply operation over a wide voltage range. It features an extended temperature range of -40°C to +125°C and supports supply voltages up to 36V. The device includes two independent comparators with open-collector outputs compatible with TTL, MOS, and CMOS logic. Key electrical characteristics include a maximum input offset voltage of ±4mV, typical quiescent current of 600µA at 5V, and a propagation delay of 1µs. It offers improved ESD protection rated at 2kV (HBM) and low input bias current.

Feature Summary

• Enhanced B-version specifications including lower offset voltage and reduced supply current compared to standard versions
• Extended operating temperature range suitable for automotive and industrial environments
• Open-collector outputs allow flexible logic interfacing and wired-AND configurations
• High input ruggedness with dedicated ESD clamps providing 2kV HBM protection

Applications

• Vacuum robot systems
• Single phase UPS units
• Server PSU monitoring
• Cordless power tools
• Motor drives

Procurement Notes

Verify the specific package marking and date code upon receipt to ensure authenticity. Confirm that the component matches the LM2903BIPWR designation and originates from authorized distribution channels. Check for physical damage or moisture sensitivity indicators before soldering. Ensure storage conditions comply with JSTD-020 standards if the part has exceeded floor life.

Selection Notes

Select this component when an extended temperature range up to 125°C is required, distinguishing it from commercial variants like the LM393. Choose the LM2903BIPWR for applications needing higher supply voltage tolerance up to 38V absolute maximum and lower quiescent current than legacy LM2903 devices. The TSSOP-8 package is ideal for space-constrained surface-mount designs requiring drop-in replacement capabilities.

Part Context

This device belongs to the next-generation LMx93B family, serving as an enhanced successor to the industry-standard LM2903. It provides improved electrical performance while maintaining pin compatibility with older A and V grades. The LM2903B series addresses modern demands for lower power consumption and higher precision in voltage comparison tasks across diverse electronic systems.

Replacement Considerations

The LM2903BIPWR is documented as a drop-in replacement for LM293, LM393, and LM2903 devices in both A and V grades. Verify that the existing design can accommodate the slightly different electrical parameters, particularly the lower quiescent current and offset voltage specifications.