REF4132B50DBVRQ1

Overview

The REF4132B50DBVRQ1 is an automotive-grade series voltage reference from Texas Instruments, part of the REF4132-Q1 family. It provides a fixed 5 V output with ±0.05% initial accuracy and a maximum temperature coefficient of 30 ppm/°C (B grade). The device operates within a supply range of VREF + VDO to 5.5 V, delivering up to ±10 mA load current while consuming a maximum quiescent current of 100 μA. It features low output noise of 15 µVp-p (0.1 Hz to 10 Hz) and excellent long-term stability of 30 ppm/1000 hrs. Packaged in a compact SOT-23-5 footprint, it supports an operating temperature range of −40°C to +125°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in harsh environments
• Low power consumption with active mode current under 100 μA and shutdown mode below 5 μA
• High precision performance characterized by ±0.05% initial accuracy and low temperature drift
• Integrated enable pin allows for flexible power management and system control

Applications

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

Procurement Notes

Verify that the specific B grade designation matches the required 30 ppm/°C temperature coefficient specification for your design. Confirm the DBVR suffix corresponds to the SOT-23-5 package variant. Ensure the Q1 suffix indicates the intended automotive application grade. Cross-reference the datasheet revision history for any updates to electrical characteristics or recommended operating conditions before finalizing procurement.

Selection Notes

Select this component when a fixed 5 V reference is required with strict limits on temperature-induced drift. The B grade offers a balance between cost and precision compared to the A grade. Consider the ±10 mA output capability for driving moderate loads directly. Evaluate the low dropout voltage requirements against your available supply rail headroom. The small SOT-23-5 package is suitable for space-constrained PCB layouts.

Part Context

This device belongs to the REF4132-Q1 family of low-drift, low-power CMOS voltage references. It serves as a high-precision alternative to legacy parts like the LM4128-Q1 and LM4132-Q1, offering enhanced specifications in a smaller footprint. The family includes various output voltage options and grades to suit different automotive signal integrity needs.

Replacement Considerations

The REF4132-Q1 is designed as a pin-to-pin replacement for the LM4128-Q1 and LM4132-Q1. Verify compatibility regarding thermal resistance and layout guidelines when transitioning from these legacy components.