REF3033AIDBZTIn StockTexas Instruments
Texas Instruments REF3033AIDBZT is a precision 3.3V series voltage reference with 0.2% initial accuracy, 100ppm/°C max temperature coefficient, and ultra-low 40µA quiescent current in a compact SOT-23 package. From $0.49 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- REF3033AIDBZT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4856(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.2% initial accuracy (2mV max error at 3.3V output) ensures tight voltage regulation for precision analog systems
- Ultra-low quiescent current of 40µA typical makes it ideal for battery-powered and low-power applications
- Wide input voltage range of 1.8V to 5.5V supports operation from single Li-ion cells to standard 5V rails
- Compact 3-pin SOT-23 package minimizes PCB footprint in space-constrained designs
- 100ppm/°C max temperature coefficient maintains output stability across industrial temperature ranges
Applications
The REF3033AIDBZT is widely used as a stable voltage reference in precision data acquisition systems, ADC/DAC biasing circuits, and portable medical instrumentation. Its low power consumption and wide input range make it an excellent choice for battery-operated devices such as handheld test equipment and IoT sensor nodes. It also serves reliably in industrial control systems and automotive electronics where accurate 3.3V references are required under varying temperature conditions.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | THREE TERMINAL VOLTAGE REFERENCE |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 1.8V |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 3.306V |
| Output Voltage-Min | 3.294V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 3.35V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temp Coef of Voltage-Max | 75ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trim/Adjustable Output | NO |
| Voltage Tolerance-Max | 0.2% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China, Malaysia, Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for REF3033AIDBZT:
Frequently Asked Questions
What is the output voltage accuracy of the REF3033AIDBZT?
The REF3033AIDBZT provides a 3.3V output with 0.2% initial accuracy, meaning the output voltage is guaranteed between 3.2934V and 3.3066V (±6.6mV). This makes it suitable for precision analog applications requiring tight voltage references.
What input voltage range does the REF3033AIDBZT support?
The REF3033AIDBZT operates with an input voltage range of 1.8V to 5.5V, with a minimum dropout of approximately 100mV above the 3.3V output. This wide range allows use with single-cell Li-ion batteries (nominal 3.7V) as well as standard 3.3V and 5V supply rails.
What is the temperature coefficient of the REF3033AIDBZT?
The REF3033AIDBZT has a maximum temperature coefficient of 100ppm/°C, meaning the output voltage drift is no more than 0.33mV per degree Celsius change. This ensures stable 3.3V reference output across the full industrial temperature range of -40°C to +125°C.
What package does the REF3033AIDBZT come in and are there pin-compatible alternatives?
The REF3033AIDBZT comes in a 3-pin SOT-23 (DBZ) package with a T&R (tape and reel) suffix for automated assembly. Pin-compatible alternatives include the REF3033AQDBZR (AEC-Q100 automotive grade) and the REF3330 series. The compact SOT-23 footprint is compatible with most standard 3-pin voltage reference layouts.
What are the typical applications for the REF3033AIDBZT?
The REF3033AIDBZT is commonly used in precision ADC/DAC voltage references, battery-powered sensor nodes, portable medical devices, and industrial measurement systems. Its 40µA typical quiescent current and 1.8V minimum input make it especially well-suited for low-power IoT applications and single-supply analog front-end circuits.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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