LP3470IM5X-4.38

Supervisors Overview

The LP3470IM5X-4.38 is a voltage supervisory circuit manufactured by Texas Instruments, designed to monitor power supply integrity in electronic systems. It operates within a maximum supply voltage of 5.5 V and features an active-low open-drain output that asserts when the monitored input drops below the 4.38 V threshold. The device provides a fixed reset delay time of 2 ms and maintains high accuracy with a 1% reset threshold tolerance. It is housed in a compact SOT-23-5 surface-mount package and supports operation across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides precise voltage supervision with a 1% threshold accuracy for reliable system monitoring.
• Features an active-low open-drain output configuration compatible with standard digital logic interfaces.
• Includes a programmable reset delay mechanism utilizing external capacitors to manage startup sequences.

Supervisors Applications

• Monitoring microprocessor and microcontroller power rails during startup and normal operation.
• Ensuring system stability in embedded control units by detecting under-voltage conditions.
• Protecting data integrity in battery-powered devices through voltage level supervision.

Supervisors Procurement Notes

Verify the specific suffix 'X' indicates reel packaging configuration as per manufacturer standards. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the selected variant matches the required thermal performance and electrical specifications for the target application environment.

Supervisors Selection Notes

Select this component when a fixed 4.38 V threshold and 2 ms delay are required for single-channel voltage monitoring. Consider the SOT-23-5 package constraints for board space limitations. Verify that the open-drain output capability aligns with the pull-up requirements of the connected reset input circuitry.

Supervisors Part Context

This part belongs to the LP3470 family of tiny power-on reset circuits from Texas Instruments. The series is characterized by low quiescent current and small footprint options, making it suitable for portable and space-constrained applications. The LP3470IM5X-4.38 specifically denotes the industrial temperature grade and reel-packaged version of the standard LP3470M5-4.38 device.

Supervisors Replacement Considerations

Direct pin-compatible substitutes include other LP3470 variants with different threshold voltages or delay characteristics. For functional equivalents with similar specifications, consider the TPS389001DSER from Texas Instruments, which offers comparable supervision capabilities in a similar form factor.