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Texas Instruments LM4050QBEM3-10/NOPB
- Part No.:
- LM4050QBEM3-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBEM3-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,409
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Product details
Overview
LM4050QBEM3-10/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 80μA to 15mA cathode current across −40°C to 125°C, enabling high-accuracy ADC/DAC biasing in space-constrained industrial and automotive systems.
For engineers reviewing the LM4050QBEM3-10/NOPB datasheet, LM4050QBEM3-10/NOPB pinout, LM4050QBEM3-10/NOPB application, or LM4050QBEM3-10/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, no-output-capacitor stability, capacitive-load tolerance, and guaranteed 10V output accuracy over extended temperature range - critical for battery-powered instrumentation, energy metering, and automotive sensor signal conditioning.
Technical Context
The LM4050QBEM3-10/NOPB implements a curvature-corrected bandgap architecture with Zener-zap trim at wafer sort, achieving ±0.1% initial accuracy at 25°C. Its internal compensation eliminates external stabilization capacitors while maintaining stability under all capacitive loads.
As a two-terminal shunt device, it regulates voltage between cathode and anode via controlled cathode current (80–100μA min, 15mA max), with dynamic impedance of 0.7Ω at 1mA/120Hz and thermal hysteresis of 2.8mV after −40°C/125°C cycling - confirming robustness in precision analog front-ends requiring long-term voltage stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal reverse breakdown voltage, fixed and unadjustable - enables direct LSB-matched referencing for 12-bit+ ADCs operating from ≥10V supplies. |
| Initial Tolerance | ±0.1% maximum at 25°C (A-grade) - ensures ≤±10mV absolute error without calibration in production test fixtures. |
| Temp Coefficient | ≤50ppm/°C over −40°C to 125°C - limits drift to ±0.6V over full range, supporting stable 10-bit resolution in industrial environments. |
| Operating Current | 80μA to 15mA cathode current range - supports ultra-low-power sensor nodes and high-current precision DAC buffers. |
| Output Noise | 150μVrms (10Hz–10kHz) - maintains SNR >85dB for 16-bit data acquisition when used as ADC reference. |
| Dynamic Impedance | 0.7Ω at 1mA/120Hz - minimizes load-induced voltage shift in varying-current applications like multiplexed sensor interfaces. |
| Long-Term Stability | 120ppm after 1000 hours - ensures <0.0012V drift in mission-critical 10-year deployments without recalibration. |
Pinout & Package
SOT-23 (DBZ) package, 2.92mm × 1.30mm body size, 3-pin surface-mount configuration with exposed die attach pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated voltage node | Connects to supply rail via series resistor; voltage develops across cathode-anode; must sink 80–15,000μA to maintain 10V regulation. |
| Anode (Pin 2) | Reference ground / common return | Must be tied to system ground; serves as voltage reference point; all output measurements referenced here. |
| NC (Pin 3) | No internal connection | Die attach interface contact; left floating or tied to Pin 2 per TI recommendation to suppress EMI in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Internally compensated for stability - eliminates BOM cost, board area, and reliability risk of external ceramic capacitor. |
| Tolerates capacitive loads | Stable with any value of output capacitance - simplifies filtering in ADC reference paths without phase-margin analysis. |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient temperatures (−40°C to 125°C) - supports engine control, ADAS, and infotainment subsystems. |
| Low micropower operation | 80μA minimum cathode current - enables battery life extension in portable multimeters and wireless sensor transmitters. |
| Fuse/Zener-zap voltage trim | Wafer-level trimming ensures ±0.1% initial accuracy - reduces post-manufacturing calibration steps in automated test equipment. |
Applications
| Battery-Powered Instrumentation | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld digital multimeter with 12-bit SAR ADC powered by two AA cells. IC Role / Device Role / Timing Role: 10V shunt reference providing stable VREF for ADC full-scale calibration. Use Value: Enables ±0.01% measurement accuracy over battery discharge (1.8–3.2V/cell) without recalibration due to low tempco and wide current range. |
Use Scenario: Engine coolant temperature sensor interface in powertrain control module. IC Role / Device Role / Timing Role: Precision 10V bias for ratiometric RTD bridge excitation and ADC reference. Use Value: Maintains <±0.1°C temperature resolution across −40°C to 125°C ambient, meeting AEC-Q100 Grade 1 requirements. |
| Energy Metering Reference | Industrial Process Controller ADC Bias |
Use Scenario: DIN-rail mounted kWh meter using isolated 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Primary 10V reference for metrology-grade ADC and anti-aliasing filter gain setting. Use Value: 120ppm long-term stability ensures Class 0.2 meter accuracy compliance over 10-year field deployment. |
Use Scenario: 4–20mA loop-powered PLC analog input module with 14-bit ADC. IC Role / Device Role / Timing Role: Stable 10V reference for current-to-voltage conversion and ADC scaling. Use Value: 50ppm/°C tempco prevents >0.05% span error across factory floor temperature swings (15–45°C). |
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 accuracy; 3ppm/°C max tempco; requires input voltage ≥11.5V. | Higher accuracy and lower drift, but needs higher headroom and external bypass cap; unsuitable for low-voltage or shunt-topology designs. | Select REF5010IDR only if system supply allows ≥11.5V headroom and ultra-low drift (<3ppm/°C) is mandatory. |
| ADR4510BRZ | Series reference; 10V output; ±0.02% initial accuracy; 2ppm/°C max tempco; 10μVp-p noise (0.1–10Hz); requires ≥11.2V input. | Superior noise and stability, but incompatible with shunt-based circuits and low-headroom supplies; demands strict layout for noise immunity. | Choose ADR4510BRZ for metrology-grade lab equipment where 0.02% accuracy and sub-ppm drift outweigh supply constraints. |
Compared with REF5010IDR and ADR4510BRZ, LM4050QBEM3-10/NOPB offers unique shunt topology compatibility, zero-headroom operation (VIN = VOUT), and AEC-Q100 qualification - making it the only viable choice for automotive and space-constrained industrial shunt regulator designs requiring 10V precision without external capacitors.
Availability
LM4050QBEM3-10/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor interfaces, and energy metering applications requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050QBEM3-10/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 and embedded processing technologies, with decades of expertise in precision reference design and automotive-grade component validation.
The LM4050-N product line delivers micropower shunt references optimized for space-constrained, high-accuracy applications including portable test equipment, automotive sensors, and industrial process control - emphasizing AEC-Q100 compliance, low-noise performance, and capacitor-free stability.
FAQ
What is the minimum cathode current required for LM4050QBEM3-10/NOPB to maintain regulation?
The LM4050QBEM3-10/NOPB requires a minimum cathode current of 80μA at 25°C and 100μA across the full −40°C to 125°C range to ensure stable 10V regulation. This value is confirmed in Section 5.10 of the TI datasheet for the 10V option and reflects the highest minimum current among all LM4050-N variants due to its higher breakdown voltage.
Is LM4050QBEM3-10/NOPB qualified for automotive applications?
Yes, LM4050QBEM3-10/NOPB is the Q1 variant of the LM4050-N family and is explicitly AEC-Q100 Grade 1 qualified, rated for operation from −40°C to 125°C ambient temperature. Its qualification covers stress testing for temperature cycling, humidity, and mechanical shock - making it suitable for engine bay, transmission, and ADAS subsystems.
Does LM4050QBEM3-10/NOPB require an external output capacitor?
No, LM4050QBEM3-10/NOPB is internally compensated and does not require an external output capacitor for stability. The datasheet confirms stable operation with any capacitive load, including direct connection to ADC reference inputs or op-amp feedback networks - eliminating capacitor-related BOM cost and layout sensitivity.
What is the thermal hysteresis specification for LM4050QBEM3-10/NOPB?
The thermal hysteresis of LM4050QBEM3-10/NOPB is 2.8mV, defined as the voltage shift measured at 25°C after cycling between −40°C and 125°C. This parameter is specified in Section 5.10 of the TI datasheet and reflects mechanical stress-induced drift in the SOT-23 package - critical for applications requiring repeatable calibration after thermal exposure.
How does the wideband noise of LM4050QBEM3-10/NOPB impact ADC performance?
With 150μVrms wideband noise (10Hz–10kHz), LM4050QBEM3-10/NOPB contributes ≤0.15LSB noise to a 10V full-scale 16-bit ADC (LSB = 152.6μV), preserving effective resolution. This noise level is verified in Section 5.10 and remains stable across operating current - ensuring consistent SNR in precision data acquisition systems.
LM4050QBEM3-10/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:
- Obsolete
- 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:
- 110 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBEM3-10/NOPB FAQ
1.How can I place an order for LM4050QBEM3-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBEM3-10/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 LM4050QBEM3-10/NOPB reliable?
The price and inventory of LM4050QBEM3-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBEM3-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBEM3-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBEM3-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBEM3-10/NOPB?
LM4050QBEM3-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBEM3-10/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 LM4050QBEM3-10/NOPB?
For technical support, including LM4050QBEM3-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBEM3-10/NOPB requirements.
6.How does Aetrix verify that LM4050QBEM3-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBEM3-10/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 LM4050QBEM3-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBEM3-10/NOPB?
All LM4050QBEM3-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBEM3-10/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 LM4050QBEM3-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBEM3-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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