TPS3840PH40DBVR

Supervisors Overview

The TPS3840PH40DBVR is a nanopower high-input voltage supervisor manufactured by Texas Instruments. It operates within a supply voltage range of 1.5 V to 10 V and features a fixed threshold voltage of 4.0 V. The device provides an active high, push-pull output with manual reset capability and a reset delay time of 619 ms. It consumes only 300 nA of operating current and offers 1% accuracy. Packaged in a SOT-23-5 format, it supports surface mount installation and functions reliably across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Ultra-low static current consumption for extended battery life
• High input voltage tolerance up to 10 V
• Manual reset functionality for system control
• Precision voltage monitoring with 1% accuracy

Supervisors Applications

• Portable electronic devices requiring low power supervision
• Battery-powered systems needing voltage monitoring
• Industrial equipment operating in extreme temperatures
• Consumer electronics with high-voltage input rails

Supervisors Procurement Notes

Verify the specific suffix 'H' indicates the active high output configuration when ordering. Confirm the 'P' prefix aligns with the required package type and tape-and-reel specifications. Ensure the 4.0 V threshold matches the target circuit's voltage requirements. Check RoHS compliance status if restricted materials are prohibited in your assembly process. Validate the SOT-23-5 footprint against your PCB design guidelines before finalizing procurement.

Supervisors Selection Notes

Select this component when a high-input voltage supervisor with active high output is required. The 4.0 V threshold suits applications where the main rail must be monitored at this specific level. Consider the 619 ms delay for systems tolerant of longer reset times. The nanopower characteristic makes it suitable for always-on circuits. Verify that manual reset is preferred over automatic restart for your safety logic.

Supervisors Part Context

This part belongs to the TPS3840 series of voltage supervisors from Texas Instruments. The series offers various threshold voltages and output configurations to suit different monitoring needs. The TPS3840 family is designed for applications requiring reliable power management with minimal quiescent current. It serves as a critical component for ensuring system stability during power transitions.

Supervisors Replacement Considerations

Check for other TPS3840 variants with matching 4.0 V thresholds but different output polarities if active low is acceptable. Verify pin compatibility with alternative SOT-23-5 supervisors from other manufacturers if supply constraints exist. Ensure replacement parts maintain the same 10 V maximum input rating and temperature range.