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Texas Instruments TL4050B50IDCKT
- Part No.:
- TL4050B50IDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050B50IDCKT.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,467
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Product details
Overview
TL4050B50IDCKT from Texas Instruments is a precision micropower shunt voltage reference with 5.0 V nominal output, ±0.2% initial tolerance (B grade), 50 ppm/°C max temperature coefficient, 93 μVRMS wideband noise, and stable operation from 56 μA to 15 mA cathode current - used in high-resolution ADC biasing and portable power-supply monitoring.
For engineers reviewing the TL4050B50IDCKT datasheet, TL4050B50IDCKT pinout, TL4050B50IDCKT application, or TL4050B50IDCKT equivalent, this page delivers verified specifications, SC-70 package terminal mapping, real-world use cases in data acquisition and battery-powered instrumentation, and two validated alternative parts for design flexibility.
Technical Context
The TL4050B50IDCKT operates as a two-terminal shunt reference requiring no external capacitor for stability and maintaining regulation across capacitive loads up to 10 µF. Its internal bandgap core delivers low dynamic impedance (0.5 Ω at 1 mA) and thermal hysteresis of 1.4 mV over –40°C to 125°C.
It functions within a cathode current range of 56–15,000 μA, with reverse breakdown voltage change ≤12 mV across full operating current (1–15 mA) and ≤1.4 mV below 1 mA - enabling precise biasing in low-power sensor front-ends and 12-bit DAC references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal at 100 μA cathode current; supports LSB-accurate scaling in 12-bit systems (e.g., 1 mV per step with 4.096 V variant) |
| Initial Tolerance | ±0.2% max (B grade) at 25°C; enables calibration-free designs in industrial process controls and portable test equipment |
| Temp Coefficient | ±50 ppm/°C max over –40°C to 125°C; ensures <±0.6 mV drift across full automotive temperature range |
| Noise (10 Hz–10 kHz) | 93 μVRMS; low enough to avoid degrading ENOB in 16-bit SAR ADCs when used as reference |
| Min Cathode Current | 56 μA typical (80 μA max over temp); allows operation from coin-cell sources in energy-harvesting nodes |
| Dynamic Impedance | 0.5 Ω at 1 mA, 120 Hz; provides fast transient response to load current steps in active filter bias networks |
| Operating Temp Range | –40°C to 125°C (Q-grade qualification); qualified for under-hood automotive and industrial motor drive applications |
Pinout & Package
TL4050B50IDCKT is housed in a 3-pin SC-70 (DCK) package with 0.65 mm pitch, footprint-compatible with SOT-23 but 30% smaller. Thermal resistance θJA = 252°C/W enables >100 mW dissipation at 85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Reference output node | Connected to load and current-setting resistor; sinks all cathode current (56 μA–15 mA); voltage referenced to anode |
| Anode (Pin 2) | Ground reference terminal | Return path for cathode current; must be tied to system ground or low-impedance analog ground plane |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or tied to anode per TI recommendation to avoid parasitic Schottky conduction |
Key Features
| Feature | Design Value |
|---|---|
| Zero-output-capacitor stability | Operates without external bypass capacitor - eliminates BOM cost and PCB area in space-constrained wearables |
| Wide cathode current range | 56 μA to 15 mA operation enables single-part support for both ultra-low-power sleep modes and active high-speed sampling |
| Low thermal hysteresis | 1.4 mV max after –40°C ↔ 125°C cycling - preserves accuracy in thermally cycled industrial controllers |
| ESD robustness | ±2000 V HBM rating - withstands handling in non-ESD-controlled assembly environments |
| Long-term stability | 120 ppm drift over 1000 hours - reduces recalibration frequency in medical diagnostic instruments |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: 12-bit SAR ADC (e.g., ADS7842) in portable multimeter measuring 0–5 V input range. IC Role / Device Role / Timing Role: Precision 5.0 V reference establishing full-scale voltage for ADC conversion. Use Value: Enables 1.22 mV LSB resolution without trimming; ±0.2% tolerance avoids gain calibration in production test. |
Use Scenario: Real-time monitoring of 12 V automotive battery voltage via microcontroller ADC. IC Role / Device Role / Timing Role: Stable 5.0 V shunt reference for resistive divider scaling and ADC reference. Use Value: Maintains ±6 mV absolute error over –40°C to 125°C, supporting ASIL-B functional safety diagnostics. |
| Process Control Sensors | Battery-Powered Equipment |
Use Scenario: 4–20 mA loop transmitter with integrated temperature sensor in factory automation. IC Role / Device Role / Timing Role: Reference for DAC generating precise current-set voltage in HART-compliant transmitters. Use Value: 50 ppm/°C TC and 93 μVRMS noise ensure <0.1% total error across ambient temperature swings. |
Use Scenario: Low-power gas detector using electrochemical sensor and 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Micropower 5.0 V reference for sensor bias and ADC reference during 10-second wake-up cycles. Use Value: 56 μA minimum cathode current allows operation from CR2032 coin cell for >2 years in standby mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3050AIDBZR | 5.0 V, ±0.2% initial tolerance, 50 ppm/°C TC, but 3.5 μA quiescent current vs. TL4050B50IDCKT's 56 μA min cathode current | Requires external series resistor for current setting; not inherently stable with large capacitive loads without compensation | Prefer REF3050AIDBZR only when ultra-low supply current (<10 μA) dominates over load regulation and capacitor tolerance |
| ADR3450ARJZ-R7 | 5.0 V, ±0.1% initial tolerance, 10 ppm/°C TC, but 300 μA typical supply current and requires 100 nF output capacitor | Three-terminal series reference architecture - incompatible pinout and external component requirements | Choose ADR3450ARJZ-R7 only when sub-20 ppm/°C TC is mandatory and board space permits added capacitor and layout changes |
Compared with REF3050AIDBZR and ADR3450ARJZ-R7, TL4050B50IDCKT offers true two-terminal simplicity, zero-capacitor stability, and optimal trade-off between accuracy (±0.2%), noise (93 μVRMS), and micropower operation - making it ideal for cost-sensitive, space-constrained industrial and automotive sensing nodes.
Availability
TL4050B50IDCKT is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and battery-powered equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TL4050B50IDCKT 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, with leadership in precision analog ICs and broad industrial portfolio coverage.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for high-accuracy, low-drift, micropower shunt regulation in portable instrumentation, automotive subsystems, and industrial process control.
FAQ
What is the maximum cathode current rating for TL4050B50IDCKT?
The absolute maximum cathode current for TL4050B50IDCKT is 20 mA per Absolute Maximum Ratings. However, the recommended operating condition limits continuous cathode current to 15 mA to maintain specified electrical performance and thermal reliability within the SC-70 package's 252°C/W junction-to-ambient thermal resistance. Exceeding 15 mA risks exceeding 150°C virtual junction temperature.
Does TL4050B50IDCKT require an output capacitor for stability?
No, TL4050B50IDCKT does not require an output capacitor for stability. It is explicitly designed to remain stable with all capacitive loads - including up to 10 µF - due to its inherent low dynamic impedance (0.5 Ω) and internal compensation. Adding a capacitor may reduce noise but is never necessary for regulation integrity.
What is the meaning of the 'B' and 'I' in TL4050B50IDCKT?
In TL4050B50IDCKT, 'B' denotes the initial output voltage tolerance grade (±0.2% at 25°C), and 'I' indicates the industrial temperature range qualification (–40°C to +85°C). The full part number confirms it is the 5.0 V version, SC-70 package (DCK), tape-and-reel (T), and B-grade device rated for industrial ambient conditions.
Can TL4050B50IDCKT be used in automotive under-hood applications?
TL4050B50IDCKT itself is rated for –40°C to +85°C (industrial grade), so it is not qualified for under-hood automotive use. For such applications, the Q-grade variant TL4050B50QDCKT is required - it is characterized over –40°C to +125°C and meets extended-temperature automotive reliability requirements.
How does TL4050B50IDCKT compare to TL4050A50IDCKT in terms of accuracy and cost?
TL4050B50IDCKT has ±0.2% initial tolerance and 50 ppm/°C temperature coefficient, while TL4050A50IDCKT offers tighter ±0.1% tolerance and same TC. The A-grade part typically carries a 15–25% premium and is selected only when system-level calibration is impractical - e.g., in field-deployed sensors where post-manufacture trimming is infeasible. TL4050B50IDCKT delivers optimal cost-performance balance for most industrial designs.
TL4050B50IDCKT 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):
- 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:
- SC-70-5
TL4050B50IDCKT FAQ
1.How can I place an order for TL4050B50IDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B50IDCKT 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 TL4050B50IDCKT reliable?
The price and inventory of TL4050B50IDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B50IDCKT is usually 5 days.
3.What payment methods are accepted for TL4050B50IDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B50IDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050B50IDCKT?
TL4050B50IDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B50IDCKT 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 TL4050B50IDCKT?
For technical support, including TL4050B50IDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B50IDCKT requirements.
6.How does Aetrix verify that TL4050B50IDCKT is sourced from the original manufacturer or authorized distributors?
All TL4050B50IDCKT 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 TL4050B50IDCKT meets industry standards.
7.What is the process for return or replacement of TL4050B50IDCKT?
All TL4050B50IDCKT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B50IDCKT, 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 TL4050B50IDCKT part is unused and in its original packaging.
Return procedure for TL4050B50IDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B50IDCKT Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
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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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