TPS3851H25EQDRBRQ1

Supervisors Overview

The TPS3851H25EQDRBRQ1 is a high-accuracy voltage supervisor with an integrated watchdog timer, designed for automotive applications. It features a 2.5V threshold voltage and operates within a supply range of 1.6V to 6.5V. The device provides a low supply current of 10µA (typical) and offers 0.8% voltage threshold accuracy across the operating temperature range of -40°C to 125°C. It includes a manual reset input, open-drain outputs, and a factory-programmed precision reset timeout of 170ms minimum. Qualified under AEC-Q100 Grade 1, it supports common rails from 1.8V to 5.0V with undervoltage thresholds of 4% or 7% and 0.5% hysteresis.

Supervisors Feature Summary

• High-accuracy voltage monitoring with 0.8% threshold tolerance
• Integrated user-programmable watchdog timer with dedicated output
• Manual reset input capability for system control
• Open-drain output configuration for flexible interfacing

Supervisors Applications

• Surround view system ECU
• Automotive electronic control units requiring functional safety
• Systems with tight tolerance power rails

Supervisors Procurement Notes

Verify the complete part number including suffixes such as EQDRBRQ1 to ensure correct package, temperature grade, and tape/reel specifications. Confirm AEC-Q100 qualification status and functional safety documentation availability if required for your specific design implementation. Check RoHS3 compliance and moisture sensitivity level details before ordering.

Supervisors Selection Notes

Select this component when precise undervoltage detection is critical for automotive systems. The 2.5V threshold suits specific rail monitoring needs. Consider the open-drain output and manual reset feature for system integration flexibility. Ensure the 10µA supply current meets low-power requirements. Verify that the 170ms reset timeout aligns with system startup timing constraints.

Supervisors Part Context

This device belongs to the TPS3851-Q1 family of high-accuracy voltage supervisors. It combines precision monitoring with watchdog functionality in a compact 8-pin VSON package. The family is designed for automotive environments, offering robust performance across wide temperature ranges and supporting functional safety standards through available documentation.

Supervisors Replacement Considerations

TPS3851G25EQDRBRQ1 is a parameter-equivalent alternative within the same family.