REF4132B25DBVRQ1

Overview

The REF4132B25DBVRQ1 is an automotive-grade series voltage reference from Texas Instruments, designed for high precision and low power consumption. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.05% and a maximum temperature coefficient of 30 ppm/°C (B grade). 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 in active mode. It supports source and sink currents up to ±10 mA and includes an enable pin for shutdown control. Packaged in a compact SOT-23-5 footprint, it meets AEC-Q100 Grade 1 standards.

Feature Summary

• Qualified for automotive applications meeting AEC-Q100 Grade 1 standards
• Low-drift performance with B grade temperature coefficient of 30 ppm/°C
• Integrated enable pin allows switching between active and low-power shutdown modes
• Small SOT-23-5 package footprint suitable for space-constrained designs

Applications

• ADAS front camera systems
• Automotive DC/DC converters
• HEV/EV on-board chargers and wireless chargers
• Traction inverter control circuits

Procurement Notes

Verify the specific ordering suffix matches the required grade and package configuration. Confirm that the B grade temperature coefficient aligns with system drift requirements. Ensure the input supply voltage remains within the recommended operating conditions relative to the 2.5 V output. Check documentation for any recent process change notifications affecting availability or specifications.

Selection Notes

Select this component when a fixed 2.5 V reference is required for automotive environments. The B grade offers a balance of cost and performance compared to the A grade. Consider the enable pin functionality if power management during idle states is necessary. Verify compatibility with downstream ADCs or DACs regarding noise and load regulation requirements.

Part Context

This part belongs to the REF4132-Q1 family of low-drift, low-power CMOS voltage references. It serves as a pin-to-pin replacement for legacy parts like the LM4128-Q1 and LM4132-Q1. The family includes various output voltages and grades, with the DBVRQ1 suffix indicating the SOT-23-5 package and automotive qualification.

Replacement Considerations

The datasheet identifies the LM4128-Q1 and LM4132-Q1 as direct pin-to-pin replacements. Verify that the thermal characteristics and electrical parameters of the substitute part meet the original design constraints before implementation.