LP3470IM5-2.93

Supervisors Overview

The LP3470IM5-2.93/NOPB 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 an active-low, open-drain output type. The device monitors a single input with a precise threshold voltage of 2.93 V. It provides a fixed reset delay time of 2 ms and maintains accuracy within 1%. The component is housed in a SOT-23-5 package, suitable for surface mount installation, and supports operation across a temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides active-low reset signal generation when monitored supply voltage drops below the specified threshold
• Features high precision voltage monitoring with 1% reset threshold accuracy
• Includes programmable reset delay functionality utilizing external capacitors
• Designed for ultra-low-power applications with minimal quiescent current consumption

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Battery-operated systems needing reliable voltage supervision
• Embedded controllers requiring stable power-on reset sequences
• Consumer electronics with strict space constraints

Supervisors Procurement Notes

Verify the specific suffix designation to ensure correct threshold voltage matching, as variations exist within the LP3470 family. Confirm RoHS compliance status and check for obsolescence notices, as certain variants may be marked as Not Recommended for New Designs. Ensure the ordering part number includes the NOPB suffix if lead-free composition is required for your manufacturing process.

Supervisors Selection Notes

Select this component when a compact solution for single-supply voltage monitoring is required. The SOT-23-5 package offers a small footprint ideal for space-constrained designs. Consider the fixed 2 ms delay and 1% accuracy for applications where precise timing and threshold detection are critical. Evaluate the maximum operating voltage of 5.5 V against your system's supply rails to ensure compatibility.

Supervisors Part Context

This part belongs to the LP3470 series of supervisory circuits from Texas Instruments. The series is characterized by low power consumption and precise voltage monitoring capabilities. Variants within the family differ primarily in their reset threshold voltages and packaging options, allowing designers to tailor the supervision parameters to specific application requirements while maintaining consistent functional behavior.

Supervisors Replacement Considerations

The LP3470A series serves as a pin-compatible alternative offering extended temperature ranges and higher voltage ratings. Verify that the replacement variant matches the required threshold voltage and output configuration. Check datasheets for differences in reset delay characteristics and supply current specifications before substitution.