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Texas Instruments TL4050B25IDCKT
- Part No.:
- TL4050B25IDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050B25IDCKT.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,814
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Product details
Overview
TL4050B25IDCKT from Texas Instruments is a precision 2.5V shunt voltage reference in SC-70-3 package, rated for industrial temperature range (–40°C to 85°C), with ±0.2% initial tolerance, 50ppm/°C max temperature coefficient, 41μVRMS typical noise, and stable operation from 60μA to 15mA cathode current - used in high-resolution ADC biasing and portable power-supply monitoring.
For engineers reviewing the TL4050B25IDCKT datasheet, TL4050B25IDCKT pinout, TL4050B25IDCKT application, or TL4050B25IDCKT equivalent, key selection criteria include output accuracy over temperature, low-noise performance in battery-powered instrumentation, cathode current headroom for load regulation, and compatibility with capacitive loads without external compensation.
Technical Context
The TL4050B25IDCKT operates as a two-terminal shunt reference, requiring only an external series resistor to set cathode current. Its bandgap-based core delivers stable 2.5V reverse breakdown voltage with low dynamic impedance (0.3Ω at 1mA) and minimal thermal hysteresis (0.7mV).
It functions across a wide cathode current range (60μA–15mA) while maintaining tight output stability - enabled by low temperature coefficient (±50ppm/°C), low long-term drift (120ppm/1000h), and immunity to capacitive loading effects without output capacitor requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal; maintains ±0.2% accuracy at 25°C and full –40°C to 85°C range. |
| Initial Tolerance | ±0.2% max (B grade); enables 12-bit system accuracy without trimming in data acquisition. |
| Temp Coefficient | ±50ppm/°C max; contributes ≤0.125mV drift over 85°C span, critical for precision sensor interfaces. |
| Output Noise | 41μVRMS (10Hz–10kHz); supports low-noise 16-bit ADC references without added filtering. |
| Cathode Current | 60μA min to 15mA max; allows ultra-low-power operation and robust load regulation in variable-current designs. |
| Dynamic Impedance | 0.3Ω at 1mA; ensures <1mV output shift under 300μA load transients, improving PSRR in supply monitors. |
| Thermal Hysteresis | 0.7mV; limits repeatability error after thermal cycling, essential for calibration-critical test equipment. |
Pinout & Package
TL4050B25IDCKT uses the SC-70-3 (DCK) package: 1.25mm × 2.1mm footprint, 0.65mm pitch, 0.9mm height - optimized for space-constrained portable and automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system GND; serves as return path for cathode current and load current. |
| Cathode (Pin 2) | Output voltage node | Provides regulated 2.5V; requires external series resistor to limit current per application load. |
| No Connect (Pin 3) | Unused terminal | Internally floating; must remain unconnected per TI SOT-23/SC-70 pinout guidance to avoid parasitic conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive-load stability | No output capacitor required; remains stable with any value of capacitive load, simplifying layout in noisy environments. |
| Low micropower operation | 60μA typical minimum cathode current enables use in energy-harvesting and coin-cell applications. |
| Extended temperature support | Specified from –40°C to +85°C; validated for automotive cabin and industrial control ambient conditions. |
| Low thermal hysteresis | 0.7mV max deviation after –40°C ↔ 125°C cycling; preserves calibration integrity in field-deployed instruments. |
| ESD robustness | ±2000V HBM rating; withstands standard handling without special ESD precautions during assembly. |
Applications
| Data Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: Biasing the reference input of a 16-bit SAR ADC in a portable environmental sensor node. IC Role / Device Role / Timing Role: Provides stable 2.5V reference voltage for analog-to-digital conversion accuracy. Use Value: Enables ±0.2% full-scale accuracy over temperature without calibration, reducing firmware overhead. | Use Scenario: Monitoring 3.3V rail voltage in an automotive body-control module using a microcontroller ADC. IC Role / Device Role / Timing Role: Supplies precise reference for ratiometric measurement against internal ADC reference. Use Value: Delivers 41μVRMS noise floor, ensuring <0.01% measurement resolution under engine-bay EMI. |
| Process Control Transmitters | Battery-Powered Equipment |
Use Scenario: Calibrating 4–20mA loop-powered transmitter output stage in industrial field devices. IC Role / Device Role / Timing Role: Sets precision current-sense reference for DAC-controlled output amplification. Use Value: ±50ppm/°C tempco ensures <0.05% span error over –40°C to +70°C operating range. | Use Scenario: Providing reference voltage for fuel-gauge IC in a lithium-polymer wearable device. IC Role / Device Role / Timing Role: Stable 2.5V source for coulomb-counter ADC with ultra-low quiescent current budget. Use Value: 60μA min cathode current allows operation down to 2.7V supply with >10-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3025AIDBZR | 2.5V, ±0.2% initial accuracy, 50ppm/°C, but higher 50μA min operating current and 55μVRMS noise. | Requires tighter layout for noise-sensitive 18-bit systems; less suitable for sub-100μA current budgets. | Prefer TL4050B25IDCKT when board space is constrained (SC-70 vs SOT-23) and noise below 45μVRMS is mandatory. |
| LM4040C25IDCKR | 2.5V, ±0.5% initial accuracy, 100ppm/°C, 20μA min current, 35μVRMS noise - C-grade, lower cost. | Acceptable for 12-bit systems where calibration compensates for initial error and drift. | Choose TL4050B25IDCKT when B-grade accuracy and 50ppm/°C stability are required without post-manufacture trimming. |
Compared with REF3025AIDBZR and LM4040C25IDCKR, TL4050B25IDCKT offers superior noise performance and identical accuracy/tempco in a smaller SC-70 package, making it optimal for high-density, low-noise, and battery-constrained designs where 0.2% absolute reference stability is non-negotiable.
Availability
TL4050B25IDCKT is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and battery-powered equipment requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for TL4050B25IDCKT 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 specializing in analog and embedded processing technologies, with leadership in precision analog ICs and broad industrial portfolio coverage.
The TL4050 series belongs to TI's precision shunt voltage reference product line, engineered for high-accuracy, low-power, and capacitive-load-tolerant operation in portable instrumentation, process control, and automotive subsystems.
FAQ
What is the operating temperature range for TL4050B25IDCKT?
The TL4050B25IDCKT is specified for industrial temperature operation from –40°C to +85°C. This range is validated per TI's characterization data for the "I" suffix variant, supporting reliable performance in factory automation, automotive cabin electronics, and outdoor industrial sensors without derating.
Does TL4050B25IDCKT require an output capacitor?
No, TL4050B25IDCKT does not require an output capacitor for stability. Its design is inherently stable with all capacitive loads, including large bulk capacitance on the cathode node - eliminating need for external bypass components and simplifying PCB layout in EMI-prone environments.
What is the minimum cathode current needed for TL4050B25IDCKT to regulate properly?
The TL4050B25IDCKT requires a minimum cathode current of 60μA (typical) and 65μA (max over temperature) to maintain regulation within specification. Below this threshold, output voltage deviates beyond ±0.2% tolerance, impacting accuracy in ultra-low-power applications.
How does TL4050B25IDCKT compare to TL4050A25IDCKT in accuracy?
TL4050B25IDCKT has ±0.2% initial tolerance versus ±0.1% for TL4050A25IDCKT. Both share identical 50ppm/°C max temperature coefficient and 41μVRMS noise, but TL4050B25IDCKT offers lower cost for applications where 0.2% accuracy meets system-level error budgets.
Can TL4050B25IDCKT be used in place of TL4050B25IDBZT?
Yes, TL4050B25IDCKT and TL4050B25IDBZT share identical electrical specifications and B-grade accuracy, differing only in package: SC-70-3 (DCK) vs SOT-23-3 (DBZ). Pinout is compatible (Anode–Cathode–NC), but footprint and thermal resistance differ - DCK has higher θJA (252°C/W), requiring attention to power dissipation in high-current layouts.
TL4050B25IDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 41µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TL4050B25IDCKT FAQ
1.How can I place an order for TL4050B25IDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B25IDCKT 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 TL4050B25IDCKT reliable?
The price and inventory of TL4050B25IDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B25IDCKT is usually 5 days.
3.What payment methods are accepted for TL4050B25IDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B25IDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050B25IDCKT?
TL4050B25IDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B25IDCKT 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 TL4050B25IDCKT?
For technical support, including TL4050B25IDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B25IDCKT requirements.
6.How does Aetrix verify that TL4050B25IDCKT is sourced from the original manufacturer or authorized distributors?
All TL4050B25IDCKT 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 TL4050B25IDCKT meets industry standards.
7.What is the process for return or replacement of TL4050B25IDCKT?
All TL4050B25IDCKT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B25IDCKT, 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 TL4050B25IDCKT part is unused and in its original packaging.
Return procedure for TL4050B25IDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B25IDCKT Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
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