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Processor Supervisor 1.25V 3 Open Drain 6-Pin SOT-23 T/R


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Overview of LM3880MFX-1AA/NOPB

The LM3880MFX-1AA/NOPB is a precision system supervisor IC with a watchdog timer designed for use in monitoring and controlling system power and operation. This IC offers a reliable solution for power management and system protection in various electronic applications.


(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • RESET: System Reset Output
  • VDD: Power Supply Input
  • MR: Manual Reset Input
  • WDI: Watchdog Input
  • GND: Ground Connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the LM3880MFX-1AA/NOPB IC for a visual representation.

Key Features

  • Precision System Supervisor: The LM3880MFX-1AA/NOPB serves as a precise system monitoring IC, ensuring reliable system operation.
  • Watchdog Timer: Includes a watchdog timer for monitoring system operation and triggering a reset if necessary, enhancing system reliability.
  • Manual Reset Input: Provides a manual reset input for external reset control, allowing flexibility in system reset functions.
  • Power Management: Offers efficient power management capabilities for controlling system power and ensuring proper functioning.
  • System Protection: Enhances system protection by monitoring various parameters and triggering necessary actions for system safety.

Note: For detailed technical specifications, please refer to the LM3880MFX-1AA/NOPB datasheet.


  • Embedded Systems: Ideal for use in embedded systems to monitor system status and ensure operation integrity.
  • Industrial Automation: Suitable for applications in industrial automation systems for power monitoring and system protection.
  • Consumer Electronics: Used in consumer electronic devices for system supervision and power management functionalities.


The LM3880MFX-1AA/NOPB acts as a precision system supervisor with a watchdog timer, providing essential monitoring and control functions for reliable system operation and protection.

Usage Guide

  • Power Supply: Connect VDD (Pin 2) to the system power supply within the specified voltage range.
  • Reset Control: Utilize the MR (Pin 3) for manual reset input or configure the WDI (Pin 4) for watchdog timer functionality.
  • System Integration: Integrate the LM3880MFX-1AA/NOPB into the system for continuous monitoring and supervision.

Frequently Asked Questions

Q: How does the watchdog timer function in the LM3880MFX-1AA/NOPB?
A: The watchdog timer monitors the system operation and requires a periodic input signal to reset its internal counter. If the signal is not received within the specified time, the watchdog triggers a system reset.

Q: Can the LM3880MFX-1AA/NOPB be used in automotive applications?
A: Yes, the LM3880MFX-1AA/NOPB is suitable for automotive applications where precise system monitoring and reset functionalities are required.


For similar functionalities, consider these alternatives to the LM3880MFX-1AA/NOPB:

  • MAX16055: Precision system supervisor IC with watchdog timer functionality from Maxim Integrated.
  • DS1870: System monitor and controller with watchdog timer feature from Maxim Integrated, offering system protection and monitoring capabilities.


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 5.5
Iq (typ) (mA) 0.025 Time delay (ms) 2, 10, 16, 30, 60, 120
Number of sequenced outputs 3 Rating Catalog
Operating temperature range (°C) -40 to 125

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