LP3470IM5X-4.00

Supervisors Overview

The LP3470IM5X-4.00 is a voltage supervisory circuit manufactured by Texas Instruments, designed for monitoring power supply integrity in electronic systems. It operates within a maximum supply voltage of 5.5 V and features a precise reset threshold of 4.00 V with 1% accuracy. The device provides an active-low, open-drain output and includes a programmable reset delay time of 2 ms, adjustable via an external capacitor. It is housed in a compact SOT-23-5 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides accurate voltage supervision with a fixed 1% reset threshold tolerance.
• Features an active-low open-drain output for direct interface with digital logic.
• Allows user-defined reset delay timing through an external capacitor connection.

Supervisors Applications

• Microprocessor and microcontroller power-on reset circuits
• Battery-powered system voltage monitoring
• Portable electronic device power management

Supervisors Procurement Notes

Verify the exact suffix and tape-and-reel packaging designation when ordering, as distribution channels may list variations such as LP3470M5X-4.00/NOPB. Confirm RoHS compliance status and check for obsolescence notices, as this component family has been marked as Not Recommended for New Designs (NRND) in some listings. Ensure the selected distributor sources from authorized channels to guarantee authenticity and traceability.

Supervisors Selection Notes

Select this component when a low-cost, single-channel supervisor with a fixed 4.00 V threshold is required. It is suitable for applications where manual reset functionality or watchdog timers are unnecessary. Compare against the LP3470A series if ultra-low quiescent current or extended temperature ranges beyond 85°C are critical requirements for the specific design.

Supervisors Part Context

This part belongs to the LP3470 family of tiny power-on reset circuits from Texas Instruments. It serves as a foundational voltage monitor solution, offering pin-to-pin compatibility with other variants in the series that feature different threshold voltages. The device is engineered for space-constrained designs requiring reliable power sequencing without complex configuration.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers include LP3470M5X-4.00/NOPB and TPS389001DSER. Verify electrical parameter equivalence before substitution.