LM3723IM5-3.08/NOPB

Supervisors Overview

The LM3723IM5-3.08/NOPB is a single-channel processor supervisor manufactured by Texas Instruments, designed to monitor power supply voltages and generate reset signals for microprocessors and digital systems. It operates within an input voltage range of 1.62V to 5.5V with a fixed threshold of 3.08V. The device features a push-pull/totem pole output that is active low, ensuring reliable system initialization. It includes a programmable timeout period starting at a minimum of 100ms to prevent premature resets during power-up transients. The component is housed in a compact SOT-23-5 package and supports operation across an industrial temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed 3.08V threshold for stable system supervision
• Features an active-low push-pull output driver for direct interface with processor reset pins
• Includes a programmable timeout circuit to ensure adequate power stabilization before release

Supervisors Applications

• Microprocessor and microcontroller power supply monitoring
• Digital logic circuit reset generation
• Battery-powered equipment voltage supervision

Supervisors Procurement Notes

Verify the specific suffix '3.08' confirms the 3.08V threshold voltage, as this variant differs from other thresholds in the LM3723 family. Confirm the 'IM5' designation indicates the industrial temperature grade (-40°C to +125°C) and SOT-23-5 packaging. Ensure the 'NOPB' suffix denotes lead-free and RoHS compliance. Cross-reference the manufacturer's latest datasheet to confirm current production status and any pinout revisions for the SC-74A/SOT-753 package.

Supervisors Selection Notes

Select this component when a fixed 3.08V monitoring point is required for 3.3V or similar logic systems. The push-pull output offers stronger drive capability compared to open-drain variants, suitable for driving multiple loads or long traces. The industrial temperature range makes it suitable for automotive or outdoor applications where extreme thermal conditions are expected. Compare against LM3722 (open-drain) or LM3724 (active high) if output polarity or type requirements differ.

Supervisors Part Context

The LM3723 belongs to Texas Instruments' LM372x series of simple supervisors, which also includes the LM3722 and LM3724. These devices share similar internal architectures but differ in output configuration and polarity. The LM3723 specifically provides an active-low, push-pull output, distinguishing it from the open-drain LM3722 and the active-high LM3724. This series is part of TI's broader portfolio of power management ICs focused on system protection and reliability.

Supervisors FAQ

What is the difference between LM3723 and LM3722?

The LM3723 features an active-low push-pull output, while the LM3722 has an active-low open-drain output. Both share the same threshold options and timeout functionality.

Is the reset output active high or low?

The reset output for the LM3723 is active low, meaning it pulls the output line low when a fault condition is detected or during the initial power-up timeout period.