LP3470A275DBVR

Supervisors Overview

The LP3470A275DBVR is an ultra-low-power active-low reset integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range up to 10 V and features a fixed reset threshold of 2.75 V with 1% accuracy. The device provides an open-drain output and includes a programmable reset delay time of 619 ms, adjustable via an external capacitor. It draws a typical quiescent current of 350 nA and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SOT-23-5 format, it supports surface-mount installation without manual reset or watchdog timer capabilities.

Supervisors Feature Summary

• Ultra-low power consumption with nanometer-scale static current for battery-operated systems
• High precision voltage monitoring with 1% reset threshold accuracy
• Programmable reset delay timing controlled by external capacitance
• Active-low open-drain output configuration for flexible logic interfacing

Supervisors Applications

• Portable electronic devices requiring extended battery life
• Microcontroller system supervision and brown-out protection
• Industrial control circuits operating in extreme temperatures
• Embedded systems needing reliable power-on reset sequences

Supervisors Procurement Notes

Verify the specific suffix DBVR corresponds to the SOT-23-5 package and tape-and-reel shipping configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the 2.75 V threshold and 619 ms nominal delay characteristics. Validate that the 10 V maximum supply rating aligns with target circuit requirements. Check for any obsolescence notices or lifecycle changes directly from Texas Instruments.

Supervisors Selection Notes

Select this component when precise voltage supervision is required alongside minimal standby current draw. The fixed 2.75 V threshold suits applications monitoring 3.3 V or similar rail voltages. The programmable delay allows customization of reset assertion timing relative to power ramp-up. Consider the SOT-23-5 footprint constraints and thermal performance within the -40°C to +125°C operational envelope. Evaluate if the absence of a watchdog timer meets system safety requirements.

Supervisors Part Context

This part belongs to the LP3470A family of voltage supervisors designed for low-power applications. It serves as a successor or variant to earlier LP3470 models, offering improved accuracy and lower quiescent current. The device integrates essential power management functions into a small form factor, eliminating the need for discrete comparator circuits. It complements other Texas Instruments PMIC solutions by providing dedicated reset functionality.

Supervisors Replacement Considerations

Direct substitutes include other LP3470A series variants with different threshold voltages, such as LP3470A308DBVR or LP3470A463DBVR, provided the reset level matches application needs. Pin-compatible alternatives may exist within the broader LP3470 family, but verify electrical parameters carefully. No direct cross-manufacturer equivalents are confirmed in public documentation.