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Texas Instruments TL4050B50IDBZR
- Part No.:
- TL4050B50IDBZR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050B50IDBZR.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,336
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Product details
Overview
TL4050B50IDBZR from Texas Instruments is a precision micropower shunt voltage reference with 5.0V nominal output, ±0.2% initial tolerance (B grade), 50ppm/°C max temperature coefficient, 93μVRMS wideband noise, and stable operation from 56μA to 15mA cathode current - used in high-accuracy ADC/DAC biasing and portable power-supply monitoring.
For engineers reviewing the TL4050B50IDBZR datasheet, TL4050B50IDBZR pinout, TL4050B50IDBZR application, or TL4050B50IDBZR equivalent, this page delivers verified electrical specs, SOT-23-3 terminal roles, industrial-temperature (–40°C to 85°C) performance data, and direct alternatives for precision analog design validation.
Technical Context
The TL4050B50IDBZR operates as a two-terminal shunt reference requiring no external capacitor for stability and supporting all capacitive loads. Its internal bandgap core delivers fixed 5.0V reverse breakdown voltage with low dynamic impedance (0.5Ω at 1mA) and thermal hysteresis of 1.4mV over –40°C to 125°C cycling.
Designed for use in series with an external current-setting resistor, it maintains regulation across cathode currents from 56μA (min) to 15mA while exhibiting only 0.2–1.0mV output shift across 1mA–15mA operating range and ±50ppm/°C drift over full temperature span.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V nominal at 100μA cathode current; enables precise 12-bit ADC LSB alignment in 5V systems. |
| Initial Tolerance | ±0.2% max (B grade); ensures ≤10mV absolute error at 25°C without calibration. |
| Temp Coefficient | ±50ppm/°C max; contributes ≤0.4mV drift over 0°C–70°C ambient range. |
| Noise (10Hz–10kHz) | 93μVRMS typical; limits added uncertainty to <0.02% FS in 5V reference applications. |
| Cathode Current Range | 56μA to 15mA; supports ultra-low-power sensor nodes and high-current DAC buffers. |
| Dynamic Impedance | 0.5Ω at 1mA/120Hz; minimizes load-induced output sag during transient current steps. |
| Operating Temp | –40°C to +85°C (industrial grade); qualified for embedded control and instrumentation environments. |
Pinout & Package
SOT-23-3 package (DBZ) with 1.4mm × 2.9mm footprint, 1.1mm height, and gull-wing leads. Thermal resistance θJA = 206°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Reference output node | Connected to load and current-setting resistor; sinks total cathode current (IZ + IL). |
| Anode (Pin 2) | Ground reference terminal | Common return path; must be tied to system ground or low-impedance analog ground plane. |
| NC / Floating (Pin 3) | No-connect (SOT-23) | Internally unconnected; must remain floating or tied to Pin 2 per TI recommendation to avoid parasitic Schottky conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates stably with any capacitive load (0–∞), eliminating need for output bypass capacitor in space-constrained designs. |
| Micropower operation | Minimum cathode current of 56μA enables battery-life extension in always-on monitoring circuits. |
| Low-noise reference | 93μVRMS integrated noise over 10Hz–10kHz supports 16-bit effective resolution in precision data acquisition. |
| Wide current range | Regulates accurately from 56μA to 15mA, simplifying design across low-power sensors and high-drive analog stages. |
| Thermal hysteresis | 1.4mV max after –40°C/125°C cycling ensures repeatable 5.0V output in thermally cycled industrial deployments. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: Providing reference voltage for 12-bit SAR ADCs in portable test equipment. IC Role / Device Role / Timing Role: Shunt reference supplying stable 5.0V to ADC VREF input with minimal loading error. Use Value: Enables 1mV LSB resolution (5V/4096) without trimming, leveraging ±0.2% tolerance and low 93μVRMS noise. | Use Scenario: Monitoring 5V rail integrity in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Precision shunt element in resistive-divider feedback loop for supervisor ICs or microcontroller ADC inputs. Use Value: Delivers stable 5.0V reference across –40°C to 85°C, ensuring consistent trip-point accuracy under thermal stress. |
| Instrumentation & Test Equipment | Battery-Powered Equipment |
Use Scenario: Calibrating multimeter front-end gain stages during factory production test. IC Role / Device Role / Timing Role: Primary voltage standard for automated test fixture reference paths. Use Value: ±0.2% initial tolerance and 50ppm/°C TC allow single-point calibration over full operating temperature range. | Use Scenario: Biasing op-amps and sensors in handheld gas detectors with 10-year battery life target. IC Role / Device Role / Timing Role: Low-quiescent shunt reference establishing analog signal chain offset and scaling. Use Value: 56μA minimum cathode current enables >10-year operation on coin-cell batteries when paired with sleep-mode microcontrollers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050A50IDBZR | ±0.1% initial tolerance (tighter), same 5.0V output, identical SOT-23-3 package and temp range. | Required where absolute accuracy <5mV is mandatory (e.g., metrology-grade calibration sources). | Select when higher initial accuracy justifies cost premium; no PCB changes needed. |
| REF3050AIDBZR | 5.0V series reference, 50ppm/°C TC, 42μVRMS noise, 50μA quiescent, SOT-23-3 package. | Used where low-dropout series topology is preferred over shunt configuration (e.g., single-supply systems with limited headroom). | Choose for lower noise and series architecture; requires different biasing network and load connection. |
Compared with TL4050A50IDBZR, TL4050B50IDBZR trades 0.1% absolute accuracy for lower cost while retaining identical thermal stability and noise; versus REF3050AIDBZR, it offers shunt topology compatibility with existing current-source designs but higher noise and no enable pin.
Availability
TL4050B50IDBZR is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and portable instrumentation requiring stable component supply with guaranteed long-term sourcing.
Supply support for TL4050B50IDBZR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for high-accuracy, low-power shunt regulation in space-constrained and thermally demanding applications.
FAQ
What is the minimum cathode current required for TL4050B50IDBZR to maintain regulation?
The TL4050B50IDBZR requires a minimum cathode current of 56μA at 25°C and up to 80μA across its full –40°C to 85°C operating range to ensure stable 5.0V output regulation. This value is specified in the TL4050x50I Electrical Characteristics table and defines the lower bound of the usable current window (56μA–15mA) for reliable operation of TL4050B50IDBZR in shunt regulator configurations.
Does TL4050B50IDBZR require an output capacitor for stability?
No, TL4050B50IDBZR does not require an output capacitor for stability. As a two-terminal shunt reference, it is explicitly designed to remain stable with all capacitive loads - including zero capacitance - eliminating the need for external bypass components. This feature simplifies layout and reduces bill-of-materials count in compact TL4050B50IDBZR implementations.
What is the thermal hysteresis specification for TL4050B50IDBZR?
The thermal hysteresis of TL4050B50IDBZR is 1.4mV maximum, defined as the difference between its 25°C output voltage measured after cycling to –40°C versus after cycling to 125°C. This parameter is critical for applications subject to repeated thermal cycling, such as outdoor industrial sensors, where TL4050B50IDBZR must deliver repeatable 5.0V reference performance across environmental extremes.
How does the noise performance of TL4050B50IDBZR compare to the 2.5V and 4.096V variants?
TL4050B50IDBZR exhibits 93μVRMS wideband noise (10Hz–10kHz), matching the TL4050B41x variants but higher than the 2.5V TL4050B25x family (41μVRMS). This difference arises from inherent noise scaling with output voltage in bandgap-based shunt references, making TL4050B50IDBZR suitable for 12-bit systems but less optimal than TL4050B25IDBZR for ultra-low-noise 16-bit applications.
Can TL4050B50IDBZR be used in automotive applications requiring AEC-Q200 qualification?
No, TL4050B50IDBZR is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q200 qualified. For automotive applications, TI offers the Q-grade variant TL4050B50QDBZR, which extends operation to 125°C ambient and undergoes additional stress testing. TL4050B50IDBZR should only be deployed in non-safety-critical industrial or commercial systems where TL4050B50IDBZR's industrial-grade qualification is sufficient.
TL4050B50IDBZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050B50IDBZR FAQ
1.How can I place an order for TL4050B50IDBZR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B50IDBZR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TL4050B50IDBZR reliable?
The price and inventory of TL4050B50IDBZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B50IDBZR is usually 5 days.
3.What payment methods are accepted for TL4050B50IDBZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B50IDBZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050B50IDBZR?
TL4050B50IDBZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B50IDBZR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TL4050B50IDBZR?
For technical support, including TL4050B50IDBZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B50IDBZR requirements.
6.How does Aetrix verify that TL4050B50IDBZR is sourced from the original manufacturer or authorized distributors?
All TL4050B50IDBZR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TL4050B50IDBZR meets industry standards.
7.What is the process for return or replacement of TL4050B50IDBZR?
All TL4050B50IDBZR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B50IDBZR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TL4050B50IDBZR part is unused and in its original packaging.
Return procedure for TL4050B50IDBZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B50IDBZR Tags
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TL431AIDBZR
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