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Texas Instruments LM4050QBIM3-5.0/NOPB
- Part No.:
- LM4050QBIM3-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBIM3-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,731
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Product details
Overview
LM4050QBIM3-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 5.0 V reverse breakdown voltage with ±0.1% initial tolerance (A-grade), 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA over −40°C to 125°C and requires no output capacitor-enabling stable regulation in battery-powered data-acquisition systems and automotive sensor interfaces.
For engineers reviewing the LM4050QBIM3-5.0/NOPB datasheet, LM4050QBIM3-5.0/NOPB pinout, LM4050QBIM3-5.0/NOPB application, or LM4050QBIM3-5.0/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 5.0 V output stability under capacitive loads, low 74 μA minimum operating current (typical), and compatibility with high-precision 12-bit ADCs requiring 1 mV LSB resolution.
Technical Context
The LM4050QBIM3-5.0/NOPB implements a curvature-corrected bandgap shunt reference architecture with Zener-zap trim at wafer sort, achieving ±0.1% accuracy at 25°C. Its internal compensation eliminates external capacitor requirements while maintaining stability across all capacitive loads.
It functions as a two-terminal device: cathode regulates voltage against anode (ground), with dynamic impedance of 0.5 Ω at 1 mA and thermal hysteresis of 1.4 mV over −40°C to 125°C cycling-critical for metrology and automotive applications demanding long-term voltage repeatability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage-enables direct use with 5 V supply rails and 12-bit ADCs targeting 1 mV LSB. |
| Initial Tolerance | ±0.1% at 25°C (A-grade)-guarantees ≤ ±5 mV absolute error without calibration. |
| Tempco | ≤ 50 ppm/°C over −40°C to 125°C-limits drift to ±0.3125 V max across full range. |
| Operating Current | 74 μA min (typ), 15 mA max-supports ultra-low-power sensor nodes and robust industrial supplies. |
| Noise (10 Hz–10 kHz) | 93 μVrms-meets precision measurement requirements for 16-bit+ data converters. |
| Dynamic Impedance | 0.5 Ω at 1 mA-ensures minimal load-induced voltage shift in varying current conditions. |
| Thermal Hysteresis | 1.4 mV-quantifies voltage shift after −40°C/125°C thermal cycling, critical for field-reliable instrumentation. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed die attach pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated voltage node | Connects to supply rail via series resistor; voltage referenced to Anode; carries total cathode current (IQ + IL). |
| Anode (Pin 2) | Ground reference / common return | Mandatory ground connection; serves as voltage reference point for cathode; all specifications defined relative to this pin. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (Anode); avoids EMI coupling in noisy environments per TI recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Internally compensated-eliminates need for external bypass capacitor while remaining stable with any capacitive load. |
| AEC-Q100 Grade 1 qualification | Qualified for automotive applications with operation up to 125°C ambient and robust ESD performance (±2 kV HBM). |
| Low micropower operation | 74 μA typical minimum cathode current enables >10-year battery life in coin-cell–powered IoT sensors. |
| Curvature-corrected bandgap | Reduces temperature-induced nonlinearity-delivers flat ΔVR/ΔT response across full industrial and extended ranges. |
| Fixed 5.0 V option | Optimized for 5 V system rails and legacy ADC/DAC references-avoids resistor-divider errors and layout sensitivity. |
Applications
| Battery-Powered Data Loggers | Automotive Cabin Sensors |
|---|---|
Use Scenario: Continuous voltage monitoring in remote environmental sensors powered by CR2032 batteries. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.0 V excitation and ADC reference for thermistor/pressure transducer signal chains. Use Value: 74 μA minimum current draw extends battery life beyond 5 years; ±0.1% tolerance ensures <1 LSB error in 12-bit conversions without calibration. |
Use Scenario: Occupancy and air quality sensing in automotive HVAC control modules. IC Role / Device Role / Timing Role: Precision 5.0 V reference for analog front-end amplifiers and 12-bit SAR ADCs interfacing CO₂ and humidity sensors. Use Value: AEC-Q100 Grade 1 rating guarantees operation at 125°C under hood; 50 ppm/°C tempco maintains <±0.3% accuracy across cabin temperature extremes. |
| Industrial Process Transmitters | Precision Audio DAC Reference |
Use Scenario: 4–20 mA loop-powered pressure transmitters deployed in oil & gas refineries. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing accurate 5.0 V rail for signal conditioning and microcontroller peripherals. Use Value: No-output-capacitor design simplifies PCB layout in space-constrained transmitter housings; 15 mA max current supports integrated diagnostics circuitry. |
Use Scenario: High-fidelity audio DACs in studio-grade digital-to-analog converters. IC Role / Device Role / Timing Role: Low-noise 5.0 V reference source for R-2R ladder or sigma-delta DAC core voltage scaling. Use Value: 93 μVrms broadband noise directly translates to >102 dB SNR floor-meeting THD+N requirements for 24-bit audio playback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDBZR | Series reference (not shunt); 5.0 V output; ±0.05% initial accuracy; 3 μVrms noise; requires input capacitor and higher quiescent current (≈950 μA). | Requires dedicated supply rail; unsuitable for 2-terminal configurations or current-limited sources. | Select when ultra-low noise and highest initial accuracy outweigh power and topology constraints. |
| ADR4550BRZ | Series reference; 5.0 V; ±0.02% initial accuracy; 1.8 μVrms noise; 450 μA quiescent current; needs input/output capacitors. | Cannot replace LM4050QBIM3-5.0/NOPB in shunt topologies; demands ≥5.5 V input and board area for decoupling. | Choose for metrology-grade instruments where noise and long-term drift dominate over power and simplicity. |
Compared with REF5050IDBZR and ADR4550BRZ, the LM4050QBIM3-5.0/NOPB uniquely supports true 2-terminal operation with micropower consumption and zero external capacitor requirement-making it irreplaceable in space- and current-constrained shunt regulator designs.
Availability
LM4050QBIM3-5.0/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, automotive electronics, and industrial process control requiring stable component supply with guaranteed long-term availability and AEC-Q100 compliance.
Supply support for LM4050QBIM3-5.0/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 reference innovation.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, low-current applications including automotive sensors, portable instrumentation, and industrial transmitters-prioritizing accuracy, stability, and ease of use.
FAQ
What is the minimum operating current for LM4050QBIM3-5.0/NOPB?
The LM4050QBIM3-5.0/NOPB has a typical minimum operating current of 74 μA at 25°C and 80 μA across the full −40°C to 125°C range. This value ensures stable 5.0 V regulation; operation below this current may cause loss of accuracy or dropout. The LM4050QBIM3-5.0/NOPB must be biased above this threshold using an appropriate series resistor in shunt configuration.
Is LM4050QBIM3-5.0/NOPB qualified for automotive applications?
Yes, LM4050QBIM3-5.0/NOPB is LM4050-N-Q1 grade and AEC-Q100 Grade 1 qualified, rated for operation from −40°C to +125°C ambient temperature. It meets automotive reliability standards including HTOL, temperature cycling, and ESD (±2 kV HBM), making it suitable for engine control, cabin sensors, and ADAS subsystems.
Does LM4050QBIM3-5.0/NOPB require an output capacitor?
No, LM4050QBIM3-5.0/NOPB is internally compensated and does not require an output capacitor for stability-even with capacitive loads up to several microfarads. This eliminates board space and cost associated with external components while simplifying layout. A bypass capacitor may be added optionally for additional noise filtering.
What is the thermal hysteresis specification for LM4050QBIM3-5.0/NOPB?
The LM4050QBIM3-5.0/NOPB exhibits 1.4 mV thermal hysteresis-the voltage shift measured at 25°C after cycling between −40°C and +125°C. This parameter reflects mechanical stress-induced drift in the package and is critical for applications requiring repeatable measurements across temperature cycles, such as calibration equipment and field-deployed sensors.
How does LM4050QBIM3-5.0/NOPB differ from the standard LM4050AIM3-5.0?
The LM4050QBIM3-5.0/NOPB is the automotive-grade (Q1) variant with AEC-Q100 Grade 1 qualification, extended temperature range (−40°C to +125°C), and enhanced reliability testing. The LM4050AIM3-5.0 is industrial-grade (−40°C to +85°C) with identical electrical specs but lacks automotive qualification and long-term stress validation required for vehicle applications.
LM4050QBIM3-5.0/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):
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBIM3-5.0/NOPB FAQ
1.How can I place an order for LM4050QBIM3-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBIM3-5.0/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 LM4050QBIM3-5.0/NOPB reliable?
The price and inventory of LM4050QBIM3-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBIM3-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBIM3-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBIM3-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBIM3-5.0/NOPB?
LM4050QBIM3-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBIM3-5.0/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 LM4050QBIM3-5.0/NOPB?
For technical support, including LM4050QBIM3-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBIM3-5.0/NOPB requirements.
6.How does Aetrix verify that LM4050QBIM3-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBIM3-5.0/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 LM4050QBIM3-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBIM3-5.0/NOPB?
All LM4050QBIM3-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBIM3-5.0/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 LM4050QBIM3-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBIM3-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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