REF4132A33DBVRQ1

Overview

The REF4132A33DBVRQ1 is an automotive-grade series voltage reference from Texas Instruments, featuring a fixed 3.3 V output with ±0.05% initial accuracy and a maximum temperature coefficient of 12 ppm/°C. It operates within a supply range of 3.35 V to 5.5 V, delivering up to ±10 mA load current while consuming a maximum quiescent current of 100 μA. The device exhibits low-frequency noise of 15 µVp-p (0.1 Hz to 10 Hz) and long-term stability of 30 ppm per 1000 hours. Packaged in a compact SOT-23-5 footprint, it is qualified under AEC-Q100 for operation across a -40°C to +125°C ambient temperature range.

Feature Summary

• Provides high-precision voltage regulation with minimal drift over wide temperature variations
• Features an enable pin that allows switching between active mode and ultra-low power shutdown
• Delivers stable performance with low output noise suitable for sensitive analog circuits
• Offers robust protection against short circuits and electrostatic discharge events

Applications

• Automotive ADAS front camera systems
• Traction inverter control circuits
• On-board chargers for HEV/EV applications
• High-resolution data acquisition systems

Procurement Notes

Verify the specific suffix 'A' indicates the 12 ppm/°C grade and '33' denotes the 3.3 V output during procurement. Confirm the 'Q1' suffix aligns with AEC-Q100 automotive qualification requirements. Ensure the DBVR package designation matches the required SOT-23-5 form factor for your PCB layout constraints.

Selection Notes

Select this component when a fixed 3.3 V precision reference is required for automotive environments. It serves as a direct pin-to-pin replacement for LM4128-Q1 and LM4132-Q1 devices. Consider its low quiescent current for battery-powered designs and its small footprint for space-constrained automotive modules.

Part Context

This part belongs to the REF4132-Q1 family of low-drift, low-power CMOS voltage references. The family includes various output voltages such as 2.5 V, 3 V, 4.096 V, and 5 V. All variants share the same SOT-23-5 package and core specifications, differing primarily in their fixed output voltage and temperature coefficient grades.

Replacement Considerations

The REF4132-Q1 is designed as a pin-compatible upgrade for the LM4128-Q1 and LM4132-Q1 series. Verify that the legacy parts meet the same AEC-Q100 Grade 1 temperature requirements before substitution.