LP3470A400DBVR

Supervisors Overview

The LP3470A400DBVR is an ultra-low-power active-low reset integrated circuit manufactured by Texas Instruments. It monitors a single voltage input and provides a reset signal when the supply voltage drops below the specified threshold of 4.00 V. The device features a fixed reset delay time of 619 ms and operates with a maximum supply voltage of 10 V. It delivers high accuracy with a 1% reset threshold tolerance and maintains a quiescent current of 350 nA. The component supports operation over an extended temperature range from -40°C to +125°C and is housed in a compact SOT-23-5 surface-mount package.

Supervisors Feature Summary

• Ultra-low power consumption with 350 nA quiescent current for battery-operated applications
• High precision voltage monitoring with 1% reset threshold accuracy
• Programmable reset delay via external capacitor or fixed internal timing options
• Active-low open-drain output compatible with various logic families

Supervisors Applications

• Portable electronic devices requiring extended battery life
• Microcontroller system supervision and brown-out protection
• Embedded systems operating in harsh thermal environments
• Battery-powered instrumentation and sensor nodes

Supervisors Procurement Notes

Verify the specific threshold voltage and package variant against the official Texas Instruments datasheet before procurement. Confirm that the 4.00 V threshold aligns with the target system's power rail requirements. Ensure the SOT-23-5 footprint matches the design layout. Check for any recent lifecycle notices or recommended new designations (RND) to ensure long-term availability.

Supervisors Selection Notes

Select this component when precise voltage supervision is required with minimal static power draw. The 1% accuracy ensures reliable triggering near critical voltage limits. The wide operating temperature range makes it suitable for industrial applications. Compare the fixed 619 ms delay against system startup requirements; if shorter delays are needed, consider variants with different delay characteristics within the LP3470 family.

Supervisors Part Context

The LP3470A series represents an evolution of the original LP3470, offering improved accuracy and lower power consumption. This specific part number denotes the A-grade version with a 4.00 V threshold in a DBVR (SOT-23-5) package. It is designed to replace older generations while maintaining pin compatibility with legacy designs, ensuring seamless integration into existing power management architectures.

Supervisors Replacement Considerations

Direct substitutes include other LP3470A variants with different threshold voltages if the 4.00 V level is adjustable in the system design. Cross-reference with LP3470M5 series parts for similar functionality, noting potential differences in operating temperature ranges and maximum supply voltages. Verify pinout compatibility before substitution.