FM810LS3X

Supervisors Overview

The FM810LS3X is a single-channel power supply support circuit manufactured by Fairchild Semiconductor. It functions as a microcontroller supervisor with a fixed threshold voltage of +4.63V. The device utilizes CMOS technology and features a push-pull, totem pole output stage. It is housed in a compact SOT-23 package with three pins, designed for precise reset monitoring in embedded systems.

Supervisors Feature Summary

• Provides precise power supply monitoring with a fixed threshold voltage
• Features a push-pull totem pole output stage for robust drive capability
• Utilizes CMOS technology for low power consumption

Supervisors Applications

• Microcontroller power supply supervision
• Embedded system reset generation
• Portable electronic device power management

Supervisors Procurement Notes

Verify the manufacturer designation as Fairchild Semiconductor, now part of ON Semiconductor, when sourcing components. Confirm the specific suffix 'S3X' corresponds to the SOT-23 package and tape-and-reel configuration if applicable. Ensure compatibility with existing PCB footprints for the three-pin surface-mount design before procurement.

Supervisors Selection Notes

Select this component when a fixed 4.63V reset threshold is required for system stability. The push-pull output allows direct interfacing with digital logic without additional pull-up resistors. Consider the SOT-23 package size for space-constrained designs requiring reliable power monitoring.

Supervisors Part Context

This device belongs to the FM810 series of 3-pin UC Supervisor Circuits from Fairchild Semiconductor. Similar parts in the family include the FM810RE and FM810MS3, which offer different fixed threshold voltages such as 2.63V and 4.38V respectively, while maintaining the same package and functional architecture.

Supervisors Replacement Considerations

Direct substitutes within the same family include FM810RE (2.63V) and FM810MS3 (4.38V), provided the threshold voltage matches the application requirements. Cross-manufacturer equivalents like IMP809 or SP809 may be considered but require verification of pinout and electrical characteristics.