LM810M3X-4.63

Supervisors Overview

The LM810M3X-4.63 is a voltage supervisory circuit manufactured by Texas Instruments, designed for monitoring single power supply rails. It operates within a supply voltage range of 2.8 V to 5.5 V and features a fixed threshold voltage of 4.63 V. The device provides an active-high, push-pull reset output with a typical reset delay time of 840 ms. It is housed in a compact SOT-23-3 package and supports surface-mount installation. The component functions across an extended temperature range from -40°C to +105°C, drawing a low operating supply current of 18 µA.

Supervisors Feature Summary

• Provides hardware reset signals via an active-high, push-pull output interface
• Monitors a single input voltage against a fixed 4.63 V threshold
• Includes internal reset delay timer to ensure stable power-up sequencing

Supervisors Applications

• Microprocessor system power supply monitoring
• Battery-powered equipment voltage supervision
• Portable electronic device power management

Supervisors Procurement Notes

Verify the exact suffix configuration when sourcing replacements, as variations may affect electrical characteristics or packaging. Confirm RoHS compliance status and lead times through authorized distributors. Ensure the selected variant matches the required threshold voltage and output type specifications for the target application design.

Supervisors Selection Notes

Select this component for applications requiring a simple, low-power supervisor for a single rail near the 5 V logic level. The push-pull output eliminates the need for external pull-up resistors, simplifying board layout. Consider the 840 ms delay duration to ensure it aligns with the microcontroller's startup requirements without causing unnecessary boot delays.

Supervisors Part Context

This part belongs to the LM810 series of voltage supervisors from Texas Instruments. It serves as a dedicated hardware monitor for ensuring reliable system operation by detecting under-voltage conditions. The series is commonly integrated into embedded systems where power integrity is critical for maintaining data stability and preventing erratic processor behavior during brown-out events.

Supervisors Replacement Considerations

The LM810M3-4.63/NOPB is documented as an alternate version. Verify pin compatibility and electrical parameter equivalence before substitution.