TPS3809J25DBVT

Supervisors Overview

The TPS3809J25DBVT is a voltage supervisory circuit manufactured by Texas Instruments, designed for monitoring single power supply rails. It operates within a supply voltage range of 2 V to 6 V and features a fixed threshold voltage of 2.25 V. The device provides an active low, push-pull output with a reset delay time of 200 ms. It is housed in a compact SOT-23-3 package suitable for surface mount applications. The component functions reliably across an industrial temperature range from -40°C to +85°C, consuming a quiescent current of 20 uA.

Supervisors Feature Summary

• Provides reliable system reset generation through a fixed 2.25 V under-voltage threshold detection mechanism.
• Features an active low, push-pull output stage capable of driving downstream logic interfaces directly.
• Incorporates a fixed 200 ms reset delay timer to ensure stable power-up sequencing before asserting the reset signal.

Supervisors Applications

• Monitoring microcontroller power supplies during startup and shutdown sequences
• Supervising battery-powered devices requiring low quiescent current operation
• Protecting embedded systems against brown-out conditions in portable electronics

Supervisors Procurement Notes

Verify the suffix DBVT indicates the tape-and-reel packaging variant distinct from the DBVR cut-tape version. Confirm the J-grade accuracy specification aligns with design requirements. Ensure the SOT-23-3 footprint matches the PCB layout. Cross-reference the datasheet revision date to confirm parameter consistency. Validate RoHS compliance status for the specific manufacturing batch.

Supervisors Selection Notes

Select this part when a fixed 2.25 V threshold is required for standard logic level monitoring. The push-pull output offers stronger drive capability compared to open-drain alternatives. Consider the 20 uA quiescent current for battery life optimization. The SOT-23-3 package minimizes board space usage. Verify that the 200 ms delay meets the system's power-up timing constraints without external components.

Supervisors Part Context

This component belongs to the TPS3809 family of simple voltage supervisors from Texas Instruments. It shares functional similarities with the TLV809 series but differs in specific electrical characteristics and accuracy grades. The device complements other PMIC solutions by providing dedicated reset signaling without complex configuration needs.

Supervisors Replacement Considerations

TPS3809J25DBVR serves as the cut-tape equivalent with identical electrical performance. TLV809J25DBZT offers similar functionality with potentially different accuracy specifications. Verify pinout compatibility and output stage type before substitution.