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Texas Instruments LM4050QCIM3X10/NOPB
- Part No.:
- LM4050QCIM3X10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QCIM3X10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,179
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Product details
Overview
LM4050QCIM3X10/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 10.0 V reverse breakdown voltage with ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 80 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal chains in portable instrumentation.
For engineers reviewing the LM4050QCIM3X10/NOPB datasheet, LM4050QCIM3X10/NOPB pinout, LM4050QCIM3X10/NOPB application, or LM4050QCIM3X10/NOPB equivalent, key selection criteria include its 10 V fixed output, industrial/extended temperature range (−40°C to +125°C), low dynamic impedance (0.7 Ω), no-output-capacitor requirement, and AEC-Q100 Grade 1 qualification for automotive use.
Technical Context
The LM4050QCIM3X10/NOPB is a two-terminal shunt reference that regulates voltage by sinking adjustable current through its cathode while maintaining a precise 10.0 V reverse breakdown across anode-to-cathode. Its bandgap-derived Zener-zap trimmed structure provides curvature-corrected temperature drift and stable performance over 60 μA–15 mA operating current.
It features fuse-based wafer-sort trimming for ±0.1% initial accuracy at 25°C, thermal hysteresis of 2.8 mV after −40°C/125°C cycling, and robust ESD immunity (±2000 V HBM). Unlike series references, it requires an external current-setting resistor but eliminates need for output capacitance and tolerates unlimited capacitive loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±0.1% at 25°C (A-grade), enabling high-accuracy ADC/DAC biasing without calibration |
| Temp Coefficient | ≤50 ppm/°C over −40°C to +125°C, ensuring ≤±6.5 mV drift across full range |
| Min Operating Current | 100 μA (typical), allowing ultra-low-power operation in battery-backed systems |
| Dynamic Impedance | 0.7 Ω at 1 mA, minimizing load-induced voltage variation in precision feedback loops |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz), critical for low-noise sensor front-ends and metrology |
| Long-Term Stability | 120 ppm (1000 hrs), supporting reliable performance in unattended monitoring equipment |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Current input / voltage regulation node | Connected to supply rail via current-setting resistor; sinks all load + reference current |
| Anode (Pin 2) | Reference ground / common return | Must be tied to system ground; defines 0 V reference point for 10 V output |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or solder required |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables space-constrained designs (e.g., wearables) without stability compromises |
| Tolerates capacitive loads | Supports direct connection to ADC input caps or long PCB traces without oscillation |
| AEC-Q100 Grade 1 qualified | Validated for automotive under-hood applications (−40°C to +125°C ambient) |
| Low 100 μA minimum current | Extends battery life in portable test gear and remote sensors beyond 10 years |
| Fuse-trimmed ±0.1% accuracy | Reduces system-level calibration overhead in production test and metrology equipment |
Applications
| Portable Data Loggers | Automotive Battery Monitoring |
|---|---|
Use Scenario: Continuous voltage logging in solar-powered environmental sensors with 10-year deployment life. IC Role / Device Role / Timing Role: Shunt reference providing stable 10 V reference for 16-bit SAR ADC sampling battery and sensor rails. Use Value: 100 μA min current enables >10-year runtime on coin cell; ±0.1% tolerance eliminates field recalibration. |
Use Scenario: Real-time 12 V battery state-of-health monitoring in ADAS ECUs with extended temperature operation. IC Role / Device Role / Timing Role: Precision 10 V reference for isolated voltage sensing circuit feeding microcontroller ADC. Use Value: AEC-Q100 Grade 1 rating ensures reliability at +125°C ambient; 50 ppm/°C TC maintains <±10 mV error over full range. |
| Industrial Process Transmitters | Calibration Equipment |
Use Scenario: 4–20 mA loop-powered pressure transmitter requiring traceable voltage reference for DAC output scaling. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing exact 10 V scale for 16-bit current-output DAC. Use Value: 120 ppm long-term stability meets ISO 5167 calibration validity requirements; SOT-23 footprint minimizes PCB area. |
Use Scenario: Benchtop multimeter reference module needing metrology-grade stability and low noise. IC Role / Device Role / Timing Role: Primary voltage standard in self-calibrating DMM front-end, referenced against internal 10 V standard. Use Value: 150 μVrms noise enables sub-μV resolution; thermal hysteresis <2.8 mV ensures repeatability after thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5010IDR | 10 V series reference; 3.3 V to 18 V supply; 3 ppm/°C TC; requires output cap | Needs external supply rail; higher accuracy but larger solution size and cost | Choose for ultra-low-drift systems where board space and supply availability permit series architecture |
| ADR4510BRZ | 10 V series reference; 3.6 V to 18 V supply; 3 ppm/°C TC; 1.2 μVp-p noise | Higher precision and lower noise, but demands dedicated supply and decoupling | Prefer when metrology-grade performance justifies added complexity and BOM cost |
Compared with REF5010IDR and ADR4510BRZ, the LM4050QCIM3X10/NOPB offers lowest system-level component count and smallest footprint for 10 V reference needs, trading absolute drift performance for simplicity, ultra-low quiescent current, and inherent capacitive-load immunity-ideal for cost- and space-sensitive embedded designs.
Availability
LM4050QCIM3X10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive battery monitoring, industrial process transmitters, and calibration equipment requiring stable component supply with guaranteed long-term sourcing.
Supply support for LM4050QCIM3X10/NOPB 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and automotive-grade qualification.
The LM4050-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and automotive applications-prioritizing low operating current, no-capacitor stability, and AEC-Q100 compliance without sacrificing accuracy.
FAQ
What is the minimum operating current for LM4050QCIM3X10/NOPB?
The LM4050QCIM3X10/NOPB requires a minimum operating current of 100 μA (typical) to maintain regulation within specification. This value is confirmed in Section 6.10 of the TI datasheet (SNOS455G) for the 10-V option under recommended conditions. At currents below this threshold, the output voltage may deviate beyond the ±0.1% initial tolerance. The LM4050QCIM3X10/NOPB remains functional down to ~80 μA but with degraded accuracy.
Does LM4050QCIM3X10/NOPB require an output capacitor?
No, the LM4050QCIM3X10/NOPB does not require an output capacitor for stability. Its internal design eliminates the need for external compensation, and it tolerates unlimited capacitive loading-unlike most shunt references. This feature is explicitly stated in the "Features" section of the datasheet and verified in the "Functional Block Diagram" and "Application Information" sections. The LM4050QCIM3X10/NOPB remains stable even when directly driving large ADC input capacitors or long PCB traces.
Is LM4050QCIM3X10/NOPB qualified for automotive applications?
Yes, the LM4050QCIM3X10/NOPB is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient), as confirmed in the "Features" and "Device Information" sections of the TI datasheet. It is manufactured on an automotive-grade flow and tested to meet stress, reliability, and lifetime requirements for under-hood and cabin ECUs. The LM4050QCIM3X10/NOPB shares this qualification with the LM4050-N-Q1 family, and the "Q" in the part number denotes automotive qualification.
What is the thermal hysteresis specification for LM4050QCIM3X10/NOPB?
The thermal hysteresis of the LM4050QCIM3X10/NOPB is 2.8 mV, defined as the voltage difference measured at 25°C after cycling from −40°C and from +125°C. This value is specified in Section 6.10 ("Electrical Characteristics: 10-V Option") of the SNOS455G datasheet. It reflects the device's ability to retain voltage consistency after thermal stress, critical for applications requiring repeatable measurements across temperature cycles. The LM4050QCIM3X10/NOPB exhibits lower hysteresis than lower-voltage variants due to its higher breakdown voltage architecture.
How does LM4050QCIM3X10/NOPB compare to the LM4040 series?
The LM4050QCIM3X10/NOPB offers tighter initial tolerance (±0.1% vs. ±0.5% for LM4040B), lower temperature coefficient (50 ppm/°C max vs. 100 ppm/°C), and improved long-term stability (120 ppm vs. 200 ppm). It also features enhanced ESD ratings (±2000 V HBM) and AEC-Q100 qualification-unavailable in standard LM4040 versions. While both are shunt references, the LM4050QCIM3X10/NOPB is optimized for higher-precision, automotive, and extended-temperature applications where the LM4040 series would fall short in accuracy or qualification scope.
LM4050QCIM3X10/NOPB 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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 103 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QCIM3X10/NOPB FAQ
1.How can I place an order for LM4050QCIM3X10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QCIM3X10/NOPB 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 LM4050QCIM3X10/NOPB reliable?
The price and inventory of LM4050QCIM3X10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QCIM3X10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QCIM3X10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QCIM3X10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QCIM3X10/NOPB?
LM4050QCIM3X10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QCIM3X10/NOPB 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 LM4050QCIM3X10/NOPB?
For technical support, including LM4050QCIM3X10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QCIM3X10/NOPB requirements.
6.How does Aetrix verify that LM4050QCIM3X10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QCIM3X10/NOPB 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 LM4050QCIM3X10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QCIM3X10/NOPB?
All LM4050QCIM3X10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QCIM3X10/NOPB, 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 LM4050QCIM3X10/NOPB part is unused and in its original packaging.
Return procedure for LM4050QCIM3X10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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