2U3837E18QDBVRG4Q1

Overview

The Texas Instruments 2U3837E18QDBVRG4Q1 is an automotive-grade voltage supervisory circuit designed for single-channel monitoring. It operates within a supply voltage range up to 6 V and features a fixed threshold voltage of 1.71 V. The device provides an active low, push-pull output with a manual reset capability and a reset delay time of 200 ms. Packaged in a compact SOT-23-5 format, it supports surface-mount installation. The component is rated for operation across extended temperature ranges suitable for automotive applications.

Feature Summary

• Automotive qualified supervision circuit for reliable system monitoring
• Single input channel with fixed threshold detection
• Manual reset functionality with defined delay timing

Applications

• Automotive electronic control unit power monitoring
• Battery backup system supervision
• Microcontroller reset generation in vehicle networks

Procurement Notes

Verify the obsolete status and lifecycle stage before integration. Confirm that the specific suffix Q1 denotes AEC-Q100 qualification. Ensure the SOT-23-5 package matches the PCB footprint. Validate that the 1.71 V threshold aligns with the target rail voltage. Check for available replacement options due to end-of-life status.

Selection Notes

Select this component when a fixed 1.71 V threshold is required for automotive voltage supervision. The push-pull output simplifies interface design compared to open-drain alternatives. Verify compatibility with the system's manual reset logic. Consider the 200 ms delay against startup requirements. Evaluate alternative parts if current availability is critical.

Part Context

This part belongs to the TPS38xx series of voltage supervisors from Texas Instruments. The 'Q1' suffix indicates automotive qualification under AEC-Q100 standards. It serves as a dedicated power-on reset generator for microcontrollers and digital systems requiring stable voltage monitoring in harsh environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The component is listed as obsolete. Engineers should consult official Texas Instruments resources for current equivalent recommendations or next-generation replacements.