LM810M3-2.63/NOPB

Supervisors Overview

The LM810M3-2.63/NOPB is a voltage supervisory circuit manufactured by Texas Instruments, designed for monitoring single power supply rails. It operates within a maximum supply voltage of 5.5 V and features an active-low, push-pull reset output. The device provides a fixed threshold voltage of 2.63 V with a reset delay time of 240 ms. It functions reliably across an extended temperature range from -40 °C to +105 °C and is housed in a compact SOT-23-3 surface-mount package.

Supervisors Feature Summary

• Provides automatic system reset when monitored voltage drops below the specified threshold
• Features an active-low, push-pull output driver for direct interface with digital logic
• Operates without requiring external components such as resistors or capacitors
• Includes internal reset timing circuitry to ensure stable power-up sequencing

Supervisors Applications

• Microprocessor and microcontroller power supply supervision
• Battery-powered equipment voltage monitoring
• Portable electronic devices requiring low standby current
• Industrial control systems operating in harsh environments

Supervisors Procurement Notes

Verify that the specific suffix matches the required output polarity and threshold voltage. Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering part number corresponds exactly to the active-low configuration and SOT-23-3 package type to avoid functional mismatches during integration.

Supervisors Selection Notes

Select this component when a fixed low-voltage threshold is required for single-supply monitoring. Consider the active-low output requirement against the target controller's reset input logic. Evaluate the 240 ms delay duration against the system's power-up stability requirements. Verify that the SOT-23-3 package fits the available PCB footprint constraints.

Supervisors Part Context

This device belongs to the LM810 series of voltage supervisors from Texas Instruments. The series offers various fixed threshold options and output polarities to accommodate different system architectures. The LM810 family is characterized by low quiescent current and high accuracy, making it suitable for battery-operated applications where power efficiency is critical.

Supervisors Replacement Considerations

Check for LM810M3-2.63 variants without the NOPB suffix if lead-free compliance is not mandatory. Verify compatibility with other LM810 series parts offering identical thresholds but different output polarities.