TL4051CQDBZRG4 Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
Texas Instruments TL4051CQDBZRG4 is a precision micropower two-terminal shunt voltage reference with an adjustable output from 1.225V to 10V in a 3-pin SOT-23 package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- TL4051CQDBZRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Precision shunt voltage reference with output adjustable from 1.225V to 10V using two external resistors
- Micropower two-terminal design drawing minimal quiescent current, ideal for battery-powered and low-power sensing circuits
- Compact SOT-23 3-pin package enabling space-efficient placement on dense analog PCBs
Applications
The TL4051CQDBZRG4 is used as a precision voltage reference in portable instruments, battery monitors, and ADC reference circuits where low power consumption is critical. Its adjustable two-terminal architecture sets accurate thresholds for comparators and voltage supervisors in medical and industrial handheld equipment. The SOT-23 package and wide adjustment range from 1.225V to 10V simplify design across 1.8V, 3.3V, and 5V system rails.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | OUTPUT VOLTAGE ADJUSTABLE FROM 1.225V TO 10V |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 1.218V |
| Output Voltage-Min | 1.206V |
| Output Voltage-Nom | 1.212V |
| 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 |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 50ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trim/Adjustable Output | YES |
| Voltage Tolerance-Max | 0.5% |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output voltage range does the TL4051CQDBZRG4 support, and how is the output adjusted?
The TL4051CQDBZRG4 provides an adjustable output from 1.225V to 10V set by two external resistors connected to the reference and cathode pins. The internal bandgap reference is 1.206V to 1.218V nominal, ensuring less than 1% error across the adjustment range, making it suitable for precision ADC and DAC reference networks.
For a battery-powered sensor node operating from a 3.3V rail, how does the TL4051CQDBZRG4 compare to a fixed 1.2V reference?
The TL4051CQDBZRG4 draws micropower quiescent current and its two-terminal shunt topology requires no separate supply pin, reducing component count in 3.3V battery systems. Unlike a fixed 1.2V reference, the adjustable output from 1.225V to 10V allows a single part to serve multiple voltage thresholds across a product family without redesigning the PCB.
In which precision measurement applications is the SOT-23 package of TL4051CQDBZRG4 particularly advantageous?
The 3-pin SOT-23 package of the TL4051CQDBZRG4 fits on wearable medical monitors, compact data loggers, and portable calibrators where PCB area is under 1 cm². Its small footprint places the precision 1.206V to 1.218V internal reference close to ADC inputs, reducing board-level noise and impedance in 12-bit and 16-bit conversion circuits.
Related Guides
How to Choose a 3528 SMD Indicator LED for Blue Status Lighting: Selection Guide
A practical 3528 SMD indicator LED selection guide using 150141BS73100 and related Wurth 150141 variants for blue status lighting.
Jul 5, 2026
BAS70KFILM Design Guide for Low-Leakage Signal Clamping and RF Detector Inputs
Practical BAS70KFILM design guidance for signal clamps, RF detector inputs, leakage control, capacitance, layout, and sourcing alternatives.
Jul 5, 2026
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
Why Buy from FindMyChip
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.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”