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Texas Instruments LM4050QBIM3-10/NOPB
- Part No.:
- LM4050QBIM3-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBIM3-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,985
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Product details
Overview
LM4050QBIM3-10/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 10V reverse breakdown voltage with ±0.1% initial tolerance (A-grade), 50ppm/°C max temperature coefficient, and 150μVrms wideband noise (10Hz–10kHz). It operates from 60μA to 15mA cathode current across −40°C to 125°C and requires no output capacitor-enabling stable regulation in battery-powered instrumentation and automotive sensor signal conditioning.
For engineers reviewing the LM4050QBIM3-10/NOPB datasheet, LM4050QBIM3-10/NOPB pinout, LM4050QBIM3-10/NOPB application, or LM4050QBIM3-10/NOPB equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in precision ADC referencing and automotive power monitoring, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The LM4050QBIM3-10/NOPB implements a curvature-corrected bandgap reference architecture with Zener-zap trim at wafer sort, achieving ±0.1% accuracy at 25°C and maintaining stability over full industrial and extended temperature ranges. Its internal compensation eliminates external capacitor dependency while tolerating arbitrary capacitive loads.
As a shunt regulator, it sinks cathode current (IR) between 60μA and 15mA to maintain 10V across cathode–anode terminals; minimum operating current is 100μA (typical) at 25°C, rising to 110μA over −40°C to 125°C. Dynamic impedance is 0.7Ω at 1mA/120Hz, supporting low-noise, high-PSRR analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal reverse breakdown voltage-enables direct 12-bit DAC/ADC referencing with 2.44mV LSB at 10V full scale. |
| Initial Tolerance | ±0.1% at 25°C (A-grade)-guarantees ≤±10mV absolute error before thermal drift or aging. |
| Temp Coefficient | ≤50ppm/°C over −40°C to 125°C-limits worst-case drift to ±0.65V across full range, critical for metering calibration. |
| Wideband Noise | 150μVrms (10Hz–10kHz)-supports <16-bit ENOB in precision data acquisition without external filtering. |
| Operating Current | 100μA to 15mA cathode current range-allows ultra-low-power operation in coin-cell systems and robust sourcing in industrial PLCs. |
| Dynamic Impedance | 0.7Ω at 1mA/120Hz-ensures minimal load-regulation error (<7mV per 10mA load step) in dynamic current-sink applications. |
| Long-Term Stability | 120ppm after 1000 hours-translates to <±1.2mV drift over 6 months, suitable for unattended energy metering deployments. |
Pinout & Package
SOT-23 (DBZ) package: 2.92mm × 1.30mm body size, 3-pin surface-mount, JEDEC MO-178 compatible. Pin 3 is NC (no internal connection) and must be left floating or tied to pin 2 per TI layout guidance for EMI-sensitive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage regulation node | Accepts input current (60μA–15mA); voltage develops across cathode–anode; connects to supply rail via series resistor RS. |
| Anode (Pin 2) | Reference ground / common return | Must be connected to system ground; serves as voltage reference point; ties to NC pin (3) in noisy environments. |
| NC (Pin 3) | No internal connection | Die attach interface contact-floating by default; tie to pin 2 only if EMI or HF switching noise exceeds 200MHz near transformers or SMPS. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Internally compensated for stability-eliminates BOM cost, board space, and reliability risk of external ceramic caps in portable designs. |
| Tolerates capacitive loads | Stable with any value or type of load capacitance-enables direct buffering into ADC sample-and-hold inputs without phase-margin analysis. |
| AEC-Q100 Grade 1 qualified | Qualified for automotive ambient temperatures up to +125°C-validates use in engine control modules, ADAS power supplies, and battery management sensors. |
| Fuse/Zener-zap voltage trim | Wafer-sort trimming ensures ±0.1% initial accuracy-reduces post-manufacturing calibration steps in test equipment and medical devices. |
| Low micropower operation | 100μA minimum cathode current-extends battery life beyond 10 years in wireless sensor nodes powered by CR2032 cells. |
Applications
| Battery-Powered Instrumentation | Automotive Power Monitoring |
|---|---|
Use Scenario: Portable multimeter measuring 0–10V DC signals with 12-bit resolution. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 10V reference for SAR ADC conversion. Use Value: ±0.1% initial tolerance and 50ppm/°C TC ensure ≤±0.01V measurement error across −10°C to +50°C handheld operation. |
Use Scenario: 12V battery voltage monitoring in ADAS domain controller with diagnostic reporting. IC Role / Device Role / Timing Role: Precision 10V reference for MCU's internal 12-bit ADC sampling battery rail via resistive divider. Use Value: AEC-Q100 Grade 1 qualification and 125°C operation guarantee accuracy during under-hood thermal cycling. |
| Precision Energy Metering | Industrial Process Control Loop |
Use Scenario: Revenue-grade electricity meter measuring 0–10V scaled current transformer outputs. IC Role / Device Role / Timing Role: Primary voltage reference for metrology ADC in Class 0.2 compliant metering IC. Use Value: 120ppm long-term stability and 150μVrms noise meet IEC 62053-21 harmonic distortion and repeatability requirements. |
Use Scenario: 4–20mA transmitter output stage calibrating loop current against 10V reference. IC Role / Device Role / Timing Role: Stable shunt reference for DAC output scaling and current-sense amplifier offset correction. Use Value: 0.7Ω dynamic impedance minimizes current-loop gain error when driving op-amp feedback networks. |
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 | Series reference (not shunt); 10V output; ±0.05% initial tolerance; 3ppm/°C TC; requires 1.2mA quiescent current. | Requires external pass transistor for high-current loads; unsuitable for low-IQ battery apps; better TC for lab-grade instruments. | Select REF5010IDR only when ultra-low TC (<5ppm/°C) and higher drive capability (>10mA) outweigh micropower needs. |
| ADR4510BRZ | Series reference; 10V output; ±0.02% initial tolerance; 2ppm/°C TC; 950μA quiescent current; SOIC-8 package. | Larger footprint and higher IQ preclude use in wearables or remote sensors; superior noise (1.2μVrms) benefits audio ADCs. | Choose ADR4510BRZ for benchtop test equipment where noise floor and TC dominate over size and power constraints. |
Compared with REF5010IDR and ADR4510BRZ, LM4050QBIM3-10/NOPB uniquely combines SOT-23 size, 100μA minimum operating current, and AEC-Q100 qualification-making it the only viable 10V shunt reference for space-constrained automotive and battery-operated precision systems.
Availability
LM4050QBIM3-10/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive power monitoring, precision energy metering, and industrial process control requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050QBIM3-10/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, embedded processing, and connectivity technologies, with over 50 years of precision analog design heritage.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, low-power, and automotive-grade applications-designed to replace discrete Zener+op-amp solutions with single-chip accuracy, stability, and qualification.
FAQ
What is the minimum cathode current required for regulation in LM4050QBIM3-10/NOPB?
The LM4050QBIM3-10/NOPB requires a minimum cathode current of 100μA (typical) at 25°C to maintain regulation, increasing to 110μA across the full −40°C to 125°C operating range. This value is specified in Section 5.10 of the TI datasheet and reflects the device's 10V version higher threshold versus lower-voltage variants like the 2.5V option (60μA min).
Is LM4050QBIM3-10/NOPB qualified for automotive applications?
Yes, LM4050QBIM3-10/NOPB is the Q1 variant-AEC-Q100 Grade 1 qualified for ambient temperatures up to +125°C and manufactured on an automotive-grade flow. This certification covers thermal cycling, humidity testing, and ESD robustness per JESD22 standards, making it suitable for engine control units and battery management systems.
Does LM4050QBIM3-10/NOPB require an external capacitor for stability?
No, LM4050QBIM3-10/NOPB is internally compensated and does not require an external output capacitor for stability. It remains stable with any capacitive load-including direct connection to ADC input capacitors-though a bypass capacitor may be added for additional high-frequency noise suppression if needed.
What is the thermal hysteresis specification for LM4050QBIM3-10/NOPB?
The thermal hysteresis of LM4050QBIM3-10/NOPB is 2.8mV maximum, defined as the voltage shift measured at 25°C after cycling between −40°C and +125°C. This parameter reflects mechanical stress-induced drift in the SOT-23 package and is critical for applications requiring repeatable calibration after thermal excursions.
How does the dynamic impedance of LM4050QBIM3-10/NOPB affect load regulation?
LM4050QBIM3-10/NOPB has a reverse dynamic impedance of 0.7Ω at 1mA/120Hz. In a shunt configuration, this translates to ≤7mV output change per 10mA variation in cathode current-directly limiting load regulation error in variable-current applications such as programmable current sources or multi-channel ADC references.
LM4050QBIM3-10/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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- 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
LM4050QBIM3-10/NOPB FAQ
1.How can I place an order for LM4050QBIM3-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBIM3-10/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 LM4050QBIM3-10/NOPB reliable?
The price and inventory of LM4050QBIM3-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBIM3-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBIM3-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBIM3-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBIM3-10/NOPB?
LM4050QBIM3-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBIM3-10/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 LM4050QBIM3-10/NOPB?
For technical support, including LM4050QBIM3-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBIM3-10/NOPB requirements.
6.How does Aetrix verify that LM4050QBIM3-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBIM3-10/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 LM4050QBIM3-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBIM3-10/NOPB?
All LM4050QBIM3-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBIM3-10/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 LM4050QBIM3-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBIM3-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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