REF3433TIDBVR

Overview

The REF3433TIDBVR is a precision series voltage reference from Texas Instruments, delivering a fixed output of 3.3 V. It features an initial accuracy of 0.05% and a low temperature coefficient of 6 PPM/°C. The device operates within an input voltage range of 3.8 V to 12 V and draws a supply current of 95 µA. It supports a maximum shunt current of 10 mA and functions reliably across a temperature range of -40°C to +125°C. Packaged in a compact SOT-23-6 surface-mount case, it includes a shutdown capability for power management.

Feature Summary

• Provides high-precision voltage regulation with 0.05% initial accuracy and 6 PPM/°C temperature stability.
• Features low-power consumption with a supply current of 95 µA and integrated shutdown functionality.
• Delivers stable performance across wide industrial temperature ranges (-40°C to +125°C).
• Supports up to 10 mA load current in a small SOT-23-6 footprint.

Applications

• High-resolution analog-to-digital converter (ADC) reference sources
• Precision data acquisition systems
• Industrial process control instrumentation
• Medical equipment requiring stable voltage references

Procurement Notes

Verify the complete part number including suffixes such as 'T' or 'ID' against official Texas Instruments documentation to ensure correct package, temperature grade, and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements for your specific manufacturing process before ordering.

Selection Notes

Select this component when a fixed 3.3 V reference with sub-0.1% accuracy is required. Compare against the REF3233 series if lower cost is prioritized over higher precision. Ensure the input voltage remains above 3.8 V for proper regulation. Consider the SOT-23-6 thermal characteristics for high ambient temperature environments.

Part Context

This part belongs to the REF34xx family of precision voltage references designed for demanding applications. It shares architectural similarities with automotive-grade variants like the REF3430QDBVRQ1 but lacks AEC-Q100 qualification. The device complements other TI PMIC solutions by providing a stable reference node for signal chain components.

Replacement Considerations

The REF3433IDBVR is a non-temp grade equivalent offering identical electrical specifications without the industrial temperature rating suffix. Verify pinout compatibility and thermal performance differences when substituting between standard and extended temperature variants.