REF4132B30DBVRQ1

Overview

The REF4132B30DBVRQ1 is an automotive-grade series voltage reference from Texas Instruments, qualified to AEC-Q100 standards. It provides a fixed 3V output with ±0.05% initial accuracy and a maximum temperature coefficient of 30 ppm/°C (B grade). The device operates within a -40°C to +125°C range, drawing a maximum quiescent current of 100 μA in active mode and 5 μA in shutdown. It supports ±10 mA load current, features low 1/f noise of 15 µVp-p/V, and utilizes a compact SOT-23-5 package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 specifications for high reliability.
• Integrated enable pin allows switching between active operation and ultra-low power shutdown modes.
• Low dropout design enables stable regulation with minimal supply voltage overhead.
• High precision performance ensures signal integrity for high-resolution data converters.

Applications

• ADAS front camera systems
• Traction inverter control circuits
• Automotive DC/DC converter feedback loops

Procurement Notes

Verify the specific suffix 'Q1' confirms automotive qualification status. Ensure the 'B' designation matches the required 30 ppm/°C drift specification rather than the lower drift A grade. Confirm the DBVR suffix corresponds to the SOT-23-5 tape-and-reel packaging format required for automated assembly processes.

Selection Notes

Select this component when system requirements demand strict adherence to automotive reliability standards alongside precise voltage referencing. The B grade offers a balance of cost and performance suitable for applications where 30 ppm/°C drift is acceptable. Consider the enable feature if power management during idle states is critical for battery-operated subsystems.

Part Context

This part belongs to the REF4132-Q1 family of low-drift, low-power CMOS voltage references. It serves as a direct pin-to-pin replacement for legacy parts like the LM4128-Q1 and LM4132-Q1 while offering enhanced electrical characteristics. The family includes various output voltages and temperature coefficients to suit diverse automotive electronic control unit needs.

Replacement Considerations

REF4132B30DBVR

FAQ

How does the enable pin affect power consumption?

Pulling the enable pin low places the device in shutdown mode, reducing quiescent current to a typical value of 2.5 µA, compared to 100 µA maximum in active mode.

What is the difference between A and B grades?

The A grade specifies a maximum temperature coefficient of 12 ppm/°C, whereas the B grade specified in this part number allows up to 30 ppm/°C over the operating temperature range.