LM8365BALMF45/NOPB

Supervisors Overview

The LM8365BALMF45/NOPB is a MicroPwr under-voltage sensing circuit manufactured by Texas Instruments. It operates within a supply voltage range of 1 V to 6 V and features a fixed threshold voltage of 4.5 V with an accuracy of 2.5%. The device provides an active-low, open-drain output and includes power-fail detection capabilities. It supports programmable reset delay times and incorporates a battery backup switch function. The component is housed in a compact SOT-23-5 package and is rated for operation between -40°C and +85°C.

Supervisors Feature Summary

• Provides active-low open-drain output signaling for under-voltage conditions
• Includes dedicated battery backup switch functionality for continuous monitoring
• Features power-fail detection to identify input voltage anomalies
• Supports programmable reset delay timing for customized system response

Supervisors Applications

• Monitoring critical voltage rails in portable electronic devices
• Ensuring system stability in battery-powered equipment through backup switching
• Providing supervisory signals for microcontroller reset sequences
• Detecting power failures in industrial control systems

Supervisors Procurement Notes

Verify the specific suffix 'F45' against official Texas Instruments documentation to confirm the exact threshold voltage variant, as ordering codes can be sensitive to minor character differences. Ensure the NOPB designation is present to guarantee lead-free compliance and RoHS adherence. Cross-reference the SOT-23-5 package marking code with manufacturer silkscreen guides to prevent counterfeit identification errors during incoming inspection.

Supervisors Selection Notes

Select this component when a precise 4.5 V under-voltage threshold is required for single-input monitoring applications. The choice is driven by the need for low quiescent current operation within the 1 V to 6 V supply range. Consider the SOT-23-5 package for space-constrained designs requiring surface-mount installation. The inclusion of battery backup switching makes it suitable for applications where voltage monitoring must persist even during main power loss scenarios.

Supervisors Part Context

This part belongs to the LM836x family of MicroPwr voltage supervisors from Texas Instruments. These devices are designed for low-power applications requiring reliable voltage monitoring without significant standby current consumption. The family shares common architectural features such as open-drain outputs and programmable delays, differentiated primarily by their specific threshold voltage settings and package options.

Supervisors Replacement Considerations

Direct substitutes include other LM8365 variants with different threshold voltages if the 4.5 V requirement is flexible. Verify pinout compatibility and electrical characteristics before substituting with generic voltage supervisors. Ensure any replacement maintains the active-low open-drain output configuration and supports the required operating temperature range.