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Texas Instruments LM4050QCIM3-2.5/NOPB
- Part No.:
- LM4050QCIM3-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QCIM3-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,873
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Product details
Overview
LM4050QCIM3-2.5/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 2.5 V reverse breakdown voltage with ±0.1% initial tolerance (A-grade), 50 ppm/°C max temperature coefficient, and 41 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, supporting space-constrained instrumentation and portable data acquisition systems.
For engineers reviewing the LM4050QCIM3-2.5/NOPB datasheet, LM4050QCIM3-2.5/NOPB pinout, LM4050QCIM3-2.5/NOPB application, or LM4050QCIM3-2.5/NOPB equivalent, this page provides verified electrical specifications, thermal performance data, SOT-23 terminal mapping, real-world use cases in battery-powered and automotive-grade circuits, and two validated alternative parts with documented technical and application differences.
Technical Context
The LM4050QCIM3-2.5/NOPB uses bandgap-based Zener-zap trimmed shunt topology with curvature-corrected temperature drift compensation, enabling stable 2.5 V reference across industrial and extended temperature ranges. Its low dynamic impedance (0.3 Ω at 1 mA) and capacitive-load tolerance eliminate external stabilization components.
It features fuse-trimmed reverse breakdown voltage during wafer sort, achieving ±0.1% accuracy at 25°C for A-grade units. The device maintains ≤120 ppm long-term stability after 1000 hours and exhibits 0.7 mV thermal hysteresis over −40°C to 125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal reverse breakdown voltage, fixed and unadjustable |
| 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 <±11 mV drift across full range |
| Operating Current | 60 μA min to 15 mA max, supporting ultra-low-power sensor nodes and high-current precision loads |
| Noise (10 Hz–10 kHz) | 41 μVrms, suitable for 16-bit+ data acquisition without added filtering |
| Dynamic Impedance | 0.3 Ω at 1 mA, minimizing load-induced voltage variation in dynamic current conditions |
| Long-Term Stability | 120 ppm after 1000 hrs, critical for field-deployed energy metering and process control |
Pinout & Package
SOT-23 (DBZ) package, 3-pin surface-mount, body size 2.92 mm × 1.30 mm, rated for 280 mW power dissipation at 25°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connects to regulated supply rail; sinks all operating + load current; sets reference potential |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground; forms current return path and defines 0 V reference point |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or pad required; not electrically bonded |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with any capacitive load up to 100 nF, reducing BOM count and board area |
| Capacitive load tolerance | Guaranteed stability even with large bypass caps on cathode, simplifying layout for noisy environments |
| Wide operating current range | 60 μA to 15 mA enables use in both microamp-level IoT sensors and 10+ mA analog front-ends |
| AEC-Q100 Grade 1 qualified | Qualified for automotive applications with guaranteed operation from −40°C to 125°C junction |
| Fuse/Zener-zap voltage trim | Wafer-sort trimming ensures ±0.1% initial accuracy without post-package calibration |
Applications
| Portable Instrumentation | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Handheld multimeters and portable oscilloscopes requiring stable, low-drift references under varying battery voltage and temperature. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling for 16-bit SAR ADCs and precision op-amp gain stages. Use Value: 41 μVrms noise and 50 ppm/°C TC enable sub-0.01% measurement accuracy without thermal recalibration. |
Use Scenario: Remote environmental monitoring nodes powered by coin cells or Li-SOCl₂ batteries with multi-year operational life. IC Role / Device Role / Timing Role: Reference source for low-power ADCs and sensor signal conditioning, operating continuously at 60–100 μA quiescent current. Use Value: Micropower operation down to 60 μA minimizes battery drain while maintaining ±0.1% initial accuracy for calibrated sensor outputs. |
| Automotive Cabin Control | Precision Industrial Transmitters |
|
Use Scenario: HVAC and seat climate control modules in passenger vehicles requiring AEC-Q100-compliant analog sensing. IC Role / Device Role / Timing Role: Stable 2.5 V reference for thermistor-to-digital conversion and PWM-controlled actuator feedback loops. Use Value: Extended −40°C to 125°C operation and AEC-Q100 Grade 1 qualification ensure reliability across automotive thermal cycles. |
Use Scenario: 4–20 mA loop-powered pressure and flow transmitters deployed in oil/gas and chemical plants. IC Role / Device Role / Timing Role: Primary voltage reference for ratiometric sensor excitation and DAC output scaling in isolated analog signal chains. Use Value: 120 ppm long-term stability and 0.7 mV thermal hysteresis support 0.1% factory calibration validity over 5+ years in field service. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C25IDBZR | Same 2.5 V output, ±0.5% initial tolerance (C-grade), higher 100 ppm/°C TC, 75 μVrms noise | Lower accuracy and higher noise limit use in non-critical biasing; not AEC-Q100 qualified | Select when cost sensitivity outweighs precision requirements and automotive qualification is unnecessary |
| REF3025AIDBZR | Series topology, 2.5 V output, ±0.2% tolerance, 50 ppm/°C TC, but requires ≥1.2 V headroom and 1 μF output cap | Cannot replace shunt configuration directly; needs redesign of current-sink circuitry and layout | Choose only if system allows series reference architecture and additional external components are acceptable |
Compared with TL4050C25IDBZR, LM4050QCIM3-2.5/NOPB delivers 5× tighter initial tolerance and lower noise for metrology-grade designs; versus REF3025AIDBZR, it enables true shunt operation with zero headroom and no mandatory output capacitor-critical for low-voltage or high-reliability shunt-regulated topologies.
Availability
LM4050QCIM3-2.5/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered data loggers, and automotive cabin control systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050QCIM3-2.5/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 voltage references and automotive-qualified ICs.
The LM4050-N family was designed specifically for high-accuracy, low-power shunt reference applications in space-constrained and thermally demanding environments-including portable test equipment, automotive subsystems, and industrial process transmitters.
FAQ
What is the minimum operating current for LM4050QCIM3-2.5/NOPB?
The LM4050QCIM3-2.5/NOPB requires a minimum operating current of 60 μA at 25°C, increasing to 65 μA across the full −40°C to 125°C temperature range. This low quiescent current enables use in ultra-low-power applications such as coin-cell-powered sensors, where maintaining reference accuracy below 100 μA is essential. The LM4050QCIM3-2.5/NOPB remains stable and within specification down to this threshold current.
Is LM4050QCIM3-2.5/NOPB AEC-Q100 qualified?
Yes, LM4050QCIM3-2.5/NOPB is AEC-Q100 Grade 1 qualified, meaning it is certified for automotive applications with guaranteed operation from −40°C to +125°C junction temperature. This qualification covers stress testing for temperature cycling, humidity, ESD (±2000 V HBM), and long-term reliability-making LM4050QCIM3-2.5/NOPB suitable for cabin control modules, body electronics, and other non-safety-critical automotive systems.
Does LM4050QCIM3-2.5/NOPB require an output capacitor?
No, LM4050QCIM3-2.5/NOPB does not require an output capacitor for stability. Its internal design tolerates any capacitive load-including large bypass capacitors up to 100 nF-without oscillation or phase margin degradation. This eliminates a common BOM item and simplifies layout, especially in compact PCBs where space is constrained and parasitic capacitance is difficult to control.
What is the thermal hysteresis specification for LM4050QCIM3-2.5/NOPB?
The LM4050QCIM3-2.5/NOPB exhibits 0.7 mV thermal hysteresis over a −40°C to +125°C temperature cycle, defined as the voltage difference measured at 25°C after exposure to −40°C versus after exposure to +125°C. This low hysteresis supports repeatable calibration in field-deployed instruments and industrial transmitters where thermal cycling is frequent and measurement repeatability is critical.
How does LM4050QCIM3-2.5/NOPB compare to the LM4040 series?
LM4050QCIM3-2.5/NOPB offers tighter initial tolerance (±0.1% vs. ±0.5% for LM4040C), lower temperature coefficient (50 ppm/°C max vs. 100 ppm/°C), and lower noise (41 μVrms vs. 60–100 μVrms). Unlike the LM4040, the LM4050QCIM3-2.5/NOPB guarantees stability with capacitive loads and features wafer-level Zener-zap trimming for improved lot-to-lot consistency-making it preferable for high-precision, production-critical applications.
LM4050QCIM3-2.5/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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 41µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QCIM3-2.5/NOPB FAQ
1.How can I place an order for LM4050QCIM3-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QCIM3-2.5/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 LM4050QCIM3-2.5/NOPB reliable?
The price and inventory of LM4050QCIM3-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QCIM3-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QCIM3-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QCIM3-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QCIM3-2.5/NOPB?
LM4050QCIM3-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QCIM3-2.5/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 LM4050QCIM3-2.5/NOPB?
For technical support, including LM4050QCIM3-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QCIM3-2.5/NOPB requirements.
6.How does Aetrix verify that LM4050QCIM3-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QCIM3-2.5/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 LM4050QCIM3-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QCIM3-2.5/NOPB?
All LM4050QCIM3-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QCIM3-2.5/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 LM4050QCIM3-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4050QCIM3-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QCIM3-2.5/NOPB Tags
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