LP3470IM5-4.00

Supervisors Overview

The LP3470IM5-4.00 is a voltage supervisory circuit manufactured by Texas Instruments, designed as a tiny power-on reset IC. It operates within a supply voltage range up to 5.5 V and features a fixed threshold voltage 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. It is housed in a SOT-23-5 surface-mount package and supports operation across a temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed 1% reset threshold accuracy
• Features an active-low open-drain output for direct interface with digital logic
• Includes a programmable reset delay controlled by an external capacitor
• Designed for ultra-low-power applications with minimal quiescent current

Supervisors Applications

• Microprocessor system reset circuits
• Battery-powered portable devices requiring low standby current
• Embedded systems power supervision
• Industrial control board voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix and tolerance against the official datasheet to ensure the correct threshold voltage. Confirm the operating temperature grade matches the design requirements. Check the lifecycle status as older variants may be marked as not recommended for new designs. Ensure the SOT-23-5 package footprint aligns with the PCB layout specifications before procurement.

Supervisors Selection Notes

Select this component when a fixed 4.00 V threshold is required for single-input voltage supervision. Consider the 2 ms typical reset delay and the need for an external capacitor for timing adjustment. Evaluate the SOT-23-5 package size constraints against available board space. Compare performance metrics with the LP3470A series if higher input voltage ranges or different temperature grades are necessary for the application.

Supervisors Part Context

This part belongs to the LP3470 family of voltage supervisors from Texas Instruments. The family offers various fixed threshold voltages and packaging options to suit different power management needs. The LP3470 series is characterized by its compact size and low power consumption, making it suitable for space-constrained and battery-operated electronics. It serves as a fundamental component for ensuring system stability during power-up and power-down sequences.

Supervisors Replacement Considerations

The LP3470M5-4.00/NOPB is a documented equivalent variant within the same product line. Verify pin compatibility and electrical specifications before substitution. Other parts in the LP3470A series may offer extended temperature ranges but require verification of threshold voltage matching.