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Texas Instruments LM4050QBEM3X10/NOPB
- Part No.:
- LM4050QBEM3X10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBEM3X10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,690
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Product details
Overview
LM4050QBEM3X10/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), 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 80 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 signal conditioning.
For engineers reviewing the LM4050QBEM3X10/NOPB datasheet, LM4050QBEM3X10/NOPB pinout, LM4050QBEM3X10/NOPB application, or LM4050QBEM3X10/NOPB equivalent, key selection criteria include its 10V fixed output, AEC-Q100 Grade 1 qualification, low 100 μA minimum operating current at 10V, thermal hysteresis of 2.8 mV, and compatibility with capacitive loads without external compensation.
Technical Context
The LM4050QBEM3X10/NOPB implements a curvature-corrected bandgap reference architecture with Zener-zap trim for ±0.1% accuracy at 25°C. Its internal compensation eliminates need for external stabilization capacitance while maintaining stability across load capacitance variations.
As a two-terminal shunt device, it regulates by sinking current through the cathode–anode path; operation requires an external series resistor (RS) to set total cathode current between 100 μA (min) and 15 mA (max), with dynamic impedance as low as 0.7 Ω at 1 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage - enables direct use with 10 V–12 bit ADCs for 2.44 mV/LSB resolution. |
| Initial Tolerance | ±0.1% at 25°C (A-grade) - ensures ≤ ±10 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤ 50 ppm/°C over −40°C to 125°C - contributes ≤ ±52 mV drift across full range (10 V × 50 ppm × 105°C). |
| Min Operating Current | 100 μA typical at 25°C - sets minimum RS value when supply is near VOUT, e.g., 10.1 V → RS ≤ 1 kΩ. |
| Noise (10 Hz–10 kHz) | 150 μVrms - limits contribution to 16-bit ADC ENOB degradation in precision measurement front-ends. |
| Dynamic Impedance | 0.7 Ω at 1 mA - maintains < 1 mV output shift under 1 mA load transients, critical for stable DAC reference rails. |
| Thermal Hysteresis | 2.8 mV (−40°C ↔ 125°C cycling) - defines repeatability error after environmental temperature excursions. |
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 / voltage regulation node | Connects to unregulated supply via RS; voltage develops across cathode–anode; must sink ≥100 μA to maintain 10 V regulation. |
| Anode (Pin 2) | Reference ground / common return | Must be tied to system ground; serves as 0 V reference point for regulated 10 V output referenced to this pin. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (anode); connecting to anode reduces EMI susceptibility in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 10 V output | Eliminates external feedback resistors-reduces BOM count and layout area in space-constrained modules like automotive ECUs. |
| No output capacitor required | Internally compensated design ensures stability with any capacitive load up to 10 μF, simplifying power rail decoupling. |
| AEC-Q100 Grade 1 qualified | Validated for automotive applications operating from −40°C to 125°C ambient, including engine control and ADAS sensors. |
| Low 100 μA min operating current | Enables ultra-low-power operation in wake-on-event circuits and energy-harvesting systems where supply current is tightly budgeted. |
| Tolerates capacitive loads | Maintains phase margin >45° with ≥1 nF to 10 μF output capacitance-supports direct coupling to ADC sample-and-hold inputs. |
Applications
| Battery-Powered Data Loggers | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Portable environmental monitoring unit logging temperature, humidity, and pressure using 12-bit SAR ADCs powered by coin-cell batteries. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 10 V reference rail for ADC conversion, directly replacing bulkier three-terminal references. Use Value: 100 μA minimum current enables >5-year battery life; 150 μVrms noise ensures ≤0.15 LSB error in 12-bit measurements. |
Use Scenario: Engine coolant temperature sensor interface in Tier-1 powertrain module requiring ASIL-B compliance. IC Role / Device Role / Timing Role: Precision 10 V reference for ratiometric RTD-to-digital conversion, operating continuously at 125°C ambient. Use Value: AEC-Q100 Grade 1 rating and 50 ppm/°C tempco guarantee ≤±52 mV drift over full automotive temperature range. |
| Industrial Process Controller Analog Inputs | Precision Audio Level Calibration |
Use Scenario: 4–20 mA loop-powered PLC analog input card measuring flow and pressure transmitters. IC Role / Device Role / Timing Role: Stable 10 V reference for 16-bit delta-sigma ADC reference, sharing ground with isolated 4–20 mA receiver. Use Value: 0.7 Ω dynamic impedance prevents reference droop during fast ADC sampling bursts; thermal hysteresis ≤2.8 mV ensures repeatable calibration. |
Use Scenario: Studio-grade audio analyzer requiring traceable DC offset and gain calibration against NIST-traceable standards. IC Role / Device Role / Timing Role: Primary 10 V reference source for automated self-calibration sequence in multichannel audio test equipment. Use Value: ±0.1% initial tolerance and 120 ppm long-term stability (1000 hrs) support annual recalibration intervals without field adjustment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C10IDBZR | ±0.5% initial tolerance (C-grade), 100 ppm/°C max tempco, same SOT-23 package and 10 V output. | Lower accuracy and higher drift limit use in non-critical industrial controls, not automotive or metrology. | Select when cost sensitivity outweighs precision requirements and AEC-Q100 is unnecessary. |
| ADR3410ARJZ-R7 | Series (not shunt) topology, 10 V output, ±0.1% tolerance, 10 ppm/°C max tempco, but requires 150 μA supply current and external bypass cap. | Higher accuracy and lower drift, but incompatible pinout and circuit topology-requires redesign of bias network. | Choose only if upgrading to series reference architecture is feasible and ultra-low drift (<10 ppm/°C) is mandatory. |
Compared with TL4050C10IDBZR, LM4050QBEM3X10/NOPB delivers 5× tighter initial tolerance and half the tempco for same footprint; versus ADR3410ARJZ-R7, it avoids supply current overhead and external capacitor dependency but trades off ultimate drift performance for shunt simplicity and automotive qualification.
Availability
LM4050QBEM3X10/NOPB is available at Aetrix Electronics and suitable for automotive sensor interfaces, portable instrumentation, industrial process controllers, and precision calibration equipment requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050QBEM3X10/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 high-reliability components for industrial, automotive, and communications markets.
The LM4050-N product line delivers precision shunt references optimized for space-constrained, low-power, and automotive-grade applications-designed to replace discrete Zener + op-amp solutions with single-chip stability and AEC-Q100 compliance.
FAQ
What is the minimum operating current for LM4050QBEM3X10/NOPB?
The LM4050QBEM3X10/NOPB has a typical minimum operating current of 100 μA at 25°C, rising to 110 μA across the full −40°C to 125°C extended temperature range. This defines the lowest cathode current needed to maintain regulation at 10 V; below this, output voltage collapses. The LM4050QBEM3X10/NOPB datasheet specifies this value under "IRMIN" in Section 5.10.
Is LM4050QBEM3X10/NOPB qualified for automotive applications?
Yes, LM4050QBEM3X10/NOPB is AEC-Q100 Grade 1 qualified, rated for operation from −40°C to +125°C ambient temperature, and manufactured on an automotive-grade process flow. This makes it suitable for engine control, transmission, and ADAS subsystems where reliability under thermal stress is critical. The LM4050QBEM3X10/NOPB part number explicitly denotes the automotive Q1 variant.
Does LM4050QBEM3X10/NOPB require an external output capacitor?
No, LM4050QBEM3X10/NOPB is internally compensated and does not require an external output capacitor for stability-even with capacitive loads up to 10 μF. This eliminates board space and BOM cost associated with external ceramics. However, a bypass capacitor may still be added for additional high-frequency noise filtering without affecting stability. The LM4050QBEM3X10/NOPB design inherently tolerates capacitive loading.
What is the thermal hysteresis specification for LM4050QBEM3X10/NOPB?
The LM4050QBEM3X10/NOPB exhibits 2.8 mV thermal hysteresis, 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 package and die interface-not electrical drift-and impacts repeatability in systems undergoing repeated thermal cycles. The LM4050QBEM3X10/NOPB datasheet reports this in Table 5.10 under "VHYST".
How does LM4050QBEM3X10/NOPB differ from the industrial-grade LM4050AIM3X10/NOPB?
LM4050QBEM3X10/NOPB is the automotive-qualified (Q1) version with extended temperature range (−40°C to +125°C) and AEC-Q100 Grade 1 certification, whereas LM4050AIM3X10/NOPB is industrial-grade (−40°C to +85°C) with identical electrical specs (±0.1%, 10 V, SOT-23). Both share the same pinout and functionality, but LM4050QBEM3X10/NOPB undergoes additional automotive screening and traceability. The LM4050QBEM3X10/NOPB is not a drop-in replacement unless the application demands automotive qualification.
LM4050QBEM3X10/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
LM4050QBEM3X10/NOPB FAQ
1.How can I place an order for LM4050QBEM3X10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBEM3X10/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 LM4050QBEM3X10/NOPB reliable?
The price and inventory of LM4050QBEM3X10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBEM3X10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBEM3X10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBEM3X10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBEM3X10/NOPB?
LM4050QBEM3X10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBEM3X10/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 LM4050QBEM3X10/NOPB?
For technical support, including LM4050QBEM3X10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBEM3X10/NOPB requirements.
6.How does Aetrix verify that LM4050QBEM3X10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBEM3X10/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 LM4050QBEM3X10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBEM3X10/NOPB?
All LM4050QBEM3X10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBEM3X10/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 LM4050QBEM3X10/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBEM3X10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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