LP3470A438DBVR

Supervisors Overview

The LP3470A438DBVR 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 a precise threshold of 4.38 V, with a tolerance of 1%. The device features an open-drain output and utilizes an external capacitor to set a programmable reset delay time of 619 ms. It operates within a maximum supply voltage of 10 V and supports surface-mount installation in a SOT-23-5 package. The component is rated for extended industrial temperature ranges from -40°C to +125°C.

Supervisors Feature Summary

• Ultra-low power consumption suitable for battery-operated applications
• High precision voltage monitoring with 1% reset threshold accuracy
• Programmable reset delay controlled by external capacitance
• Active-low open-drain output configuration

Supervisors Applications

• Monitoring power supply rails in portable electronic devices
• Ensuring system stability in industrial control equipment
• Providing reset signals for microcontrollers and digital logic circuits

Supervisors Procurement Notes

Verify the specific suffix DBVR confirms the tape-and-reel packaging format and commercial grade temperature range. Confirm that the 4.38 V threshold matches the target application requirements. Check for RoHS compliance status as indicated in official documentation. Ensure the SOT-23-5 footprint aligns with the PCB design constraints before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a fixed 4.38 V threshold is required rather than a programmable voltage setting. Choose the LP3470A series over standard LP3470 variants if extended temperature operation up to 125°C is necessary. Consider the 619 ms default delay time against system startup requirements. Verify that the 10 V maximum supply voltage exceeds the highest expected operating voltage.

Supervisors Part Context

This part belongs to the LP3470A family of ultra-low-power voltage supervisors from Texas Instruments. It is functionally compatible with the standard LP3470 series but offers improved performance characteristics including wider temperature ranges and higher supply voltage tolerance. The device serves as a critical component for maintaining system integrity during power fluctuations in compact electronic designs.

Supervisors Replacement Considerations

The LP3470M5-4.38/NOPB is a related variant within the same family. Note that the M5 version typically has a lower maximum supply voltage (5.5 V) compared to the A-series (10 V). Verify compatibility regarding supply voltage limits and temperature ratings before substituting.