REF3233AIDBVR Equivalent & Substitute Parts

Part Overview

The REF3233AIDBVR is a series voltage reference IC manufactured by Texas Instruments, designed to provide a fixed 3.3V output with ±0.2% tolerance in a SOT-23-6 surface mount package. This component is classified as a Power Management (PMIC) device and is currently marked as Not For New Designs. Due to its legacy status and limited input voltage range (3.35V to 5.5V), identifying equivalent and substitute parts is essential for ongoing production support and design optimization.

Substiute Parts

REF3233AIDBVR

Texas InstrumentsIn Stock: 3482REF3233AIDBVR Datasheet

Current PartRFQ

REF3433IDBVR

Texas InstrumentsIn Stock: 19422REF3433IDBVR Datasheet

MFR RecommendedRFQ

REF3233AIDBVT

Texas InstrumentsIn Stock: 2074REF3233AIDBVT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the REF3233AIDBVR are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Fixed output voltage of 3.3V
• Output current capability of 10 mA minimum
• SOT-23-6 surface mount package
• Operating temperature range of -40°C to 125°C
• RoHS3 compliance and REACH unaffected status

Substitution Categories:

Parametric Equivalent: REF3233AIDBVT maintains identical electrical specifications to the main part (±0.2% tolerance, 20 ppm/°C temperature coefficient, 3.35V to 5.5V input range). The difference is packaging format (Cut Tape & Digi-Reel versus bulk), making it a direct functional equivalent suitable for identical circuit applications.

Enhanced Performance Substitute: REF3433IDBVR provides superior performance characteristics while maintaining the same 3.3V output, 10 mA current, SOT-23-6 package, and operating temperature range. This part offers improved tolerance (±0.05% versus ±0.2%), lower temperature coefficient (6 ppm/°C versus 20 ppm/°C), reduced noise specifications, and an expanded input voltage range (3.8V to 12V). The REF3433IDBVR is classified as Active product status, making it suitable for new designs and ongoing production.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement in Existing Designs: REF3233AIDBVT is the appropriate choice when maintaining identical electrical performance is required. This part is a parametric equivalent with the same tolerance, temperature coefficient, and input voltage specifications as the REF3233AIDBVR. The only distinction is packaging format (Cut Tape & Digi-Reel), which does not affect circuit functionality.

For New Designs and Production Optimization: REF3433IDBVR is the recommended substitute for new applications and ongoing production support. This part carries Active product status, ensuring long-term availability and manufacturer support. The REF3433IDBVR delivers measurable performance improvements including tighter tolerance (±0.05%), lower temperature coefficient (6 ppm/°C), significantly reduced noise characteristics, lower supply current consumption (95 µA versus 135 µA), and an expanded input voltage range (3.8V to 12V). These enhancements provide greater design flexibility and improved circuit stability without requiring PCB modifications, as the SOT-23-6 package footprint remains identical.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across applications.

Frequently Asked Questions (FAQ)

Q: Can REF3233AIDBVT be used as a direct replacement for REF3233AIDBVR? A: Yes. REF3233AIDBVT is a parametric equivalent with identical electrical specifications. The difference is packaging format (Cut Tape & Digi-Reel versus bulk inventory). No circuit modifications are required.

Q: What are the advantages of switching to REF3433IDBVR? A: REF3433IDBVR offers improved tolerance (±0.05% versus ±0.2%), lower temperature coefficient (6 ppm/°C versus 20 ppm/°C), reduced noise output, lower supply current (95 µA versus 135 µA), and an expanded input voltage range (3.8V to 12V versus 3.35V to 5.5V). The part maintains the same SOT-23-6 package and 3.3V output, requiring no PCB changes.

Q: Is REF3433IDBVR compatible with existing PCB designs for REF3233AIDBVR? A: Yes. Both parts use the SOT-23-6 package with identical pinout and footprint. No PCB modifications are necessary for substitution.

Q: Why is REF3233AIDBVR marked as Not For New Designs? A: This designation indicates the part is in legacy status. Texas Instruments recommends REF3433IDBVR for new designs due to its Active product status and superior performance characteristics.

Q: What is the input voltage requirement difference between these parts? A: REF3233AIDBVR and REF3233AIDBVT require 3.35V to 5.5V input. REF3433IDBVR accepts a wider range of 3.8V to 12V, providing greater flexibility in power supply design.

Q: Are all three parts RoHS3 compliant? A: Yes. REF3233AIDBVR, REF3233AIDBVT, and REF3433IDBVR are all ROHS3 compliant and REACH unaffected.

Q: Which part should be selected for noise-sensitive applications? A: REF3433IDBVR is the optimal choice for noise-sensitive circuits, offering significantly lower noise specifications (5 µVp-p at 0.1Hz to 10Hz and 24 µVrms at 10Hz to 10kHz) compared to the REF3233 series (43 µVp-p and 63 µVrms respectively).