LM810M3-4.38/NOPB

Supervisors Overview

The LM810M3-4.38/NOPB is a voltage supervisor integrated circuit manufactured by Texas Instruments, designed for supply monitoring applications. It operates within a supply voltage range up to 5.5 V and features an active-high, push-pull reset output. The device provides a fixed threshold voltage of 4.38 V with a minimum reset delay time of 140 ms. It is housed in a surface-mount SOT-23-3 package and supports an operating temperature range from -40°C to +105°C.

Supervisors Feature Summary

• Active-high push-pull reset output for direct logic interfacing
• Fixed 4.38 V threshold voltage for precise supply monitoring
• Extended industrial temperature rating suitable for harsh environments

Supervisors Applications

• Microprocessor system power supply supervision
• Battery-powered equipment voltage monitoring
• Industrial control board reset generation

Supervisors Procurement Notes

Verify the specific suffix configuration against the manufacturer's current datasheet to ensure compatibility with design requirements. Confirm that the active-high output polarity aligns with the target system logic levels. Check for any recent product lifecycle notices or recommended alternative part numbers before finalizing procurement plans.

Supervisors Selection Notes

Select this component when an active-high reset signal is required rather than the more common active-low variant. Ensure the 4.38 V threshold matches the specific brown-out protection level needed for the monitored rail. Consider the SOT-23-3 footprint constraints during PCB layout planning.

Supervisors Part Context

This part belongs to the LM810 series of supervisory circuits, which are engineered for reliable voltage monitoring in portable and industrial electronics. The NOPB suffix indicates compliance with RoHS standards and absence of lead-based materials, aligning with modern environmental manufacturing regulations.

Supervisors Replacement Considerations

Public documentation identifies LM810M3-4.63/NOPB as an alternate option within the same family, differing primarily in threshold voltage. Verify functional equivalence regarding output type and package before substitution.