REF4132A25DBVRQ1

Overview

The REF4132A25DBVRQ1 is a low-drift, low-power series voltage reference designed for automotive applications. It provides a fixed 2.5 V output with an initial accuracy of ±0.05% and a maximum temperature coefficient of 12 ppm/°C (Grade A). The device operates within a wide ambient temperature range of -40°C to +125°C and features a low quiescent current of 100 µA maximum. It supports an output current of ±10 mA and includes an enable pin for power management. Packaged in a compact SOT-23-5 footprint, it offers excellent long-term stability and low noise performance.

Feature Summary

• Qualified for automotive environments with AEC-Q100 Grade 1 certification
• Features extremely low temperature drift and high precision accuracy
• Includes an enable pin for switching between active and shutdown modes
• Provides stable operation with minimal dropout voltage across load conditions

Applications

• ADAS front camera systems
• Automotive DC/DC converters
• HEV/EV on-board chargers
• Traction inverters

Procurement Notes

Verify the specific suffix 'A' corresponds to the 12 ppm/°C temperature coefficient grade required for your design. Confirm that the DBVR package variant matches your PCB footprint requirements. Ensure the Q1 designation aligns with your automotive qualification standards. Check the latest datasheet revision for any updates to electrical characteristics or ordering information before finalizing procurement.

Selection Notes

Select this component when a fixed 2.5 V reference with high precision and low drift is needed in space-constrained automotive designs. The low quiescent current makes it suitable for battery-powered systems. Consider the enable pin functionality if system-level power management is required. Verify that the input voltage range accommodates the minimum dropout voltage under maximum load conditions.

Part Context

This part belongs to the REF4132-Q1 family of low-drift, low-power series voltage references from Texas Instruments. It serves as a pin-to-pin replacement for legacy devices like the LM4128-Q1 and LM4132-Q1 while offering enhanced specifications. The family includes various output voltages and grades, with the REF4132A25DBVRQ1 specifically providing a 2.5 V output with Grade A drift characteristics.

Replacement Considerations

The REF4132-Q1 is documented as a pin-to-pin replacement for the LM4128-Q1 and LM4132-Q1. When substituting these older parts, verify that the new device's electrical characteristics meet the original design requirements, particularly regarding noise and stability.