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Texas Instruments LM4040QBIM3X2.5/NOPB
- Part No.:
- LM4040QBIM3X2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040QBIM3X2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,340
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Product details
Overview
LM4040QBIM3X2.5/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), 35 μVrms wideband noise (10 Hz–10 kHz), and operation across −40°C to +125°C for automotive-grade applications. It serves as a compact, capacitor-free reference in analog signal chains requiring high accuracy under varying load and temperature.
For engineers reviewing the LM4040QBIM3X2.5/NOPB datasheet, LM4040QBIM3X2.5/NOPB pinout, LM4040QBIM3X2.5/NOPB application, or LM4040QBIM3X2.5/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, low 60 μA minimum operating current, 100 ppm/°C max temperature coefficient, and compatibility with capacitive loads without external stabilization.
Technical Context
The LM4040QBIM3X2.5/NOPB implements a trimmed Zener-based shunt architecture with bandgap temperature drift curvature correction, enabling stable 2.5 V output over industrial and extended temperature ranges. Its fuse-and-Zener-zap wafer-sort trimming ensures ±0.1% accuracy at 25°C for A-grade parts like this variant.
It operates as a two-terminal device with cathode as the output node and anode grounded, requiring only a series resistor for biasing. The design tolerates capacitive loads and eliminates need for output capacitors-critical for space-constrained PCB layouts in automotive sensor modules and data acquisition front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V nominal reverse breakdown voltage, fixed and factory-trimmed for precision analog referencing |
| Initial Tolerance | ±0.1% at 25°C (A grade), enabling high-accuracy ADC/DAC biasing without calibration |
| Temp Coefficient | ≤100 ppm/°C (max), ensuring ≤±19 mV total drift over −40°C to +125°C |
| Output Noise | 35 μVrms (10 Hz–10 kHz), supporting low-noise measurement systems |
| Operating Current | 60 μA to 15 mA range, allowing ultra-low-power operation while maintaining regulation |
| Temperature Range | −40°C to +125°C (AEC-Q100 Grade 1), qualified for under-hood automotive use |
| Dynamic Impedance | 0.3–0.8 Ω at 1 mA, minimizing load-induced voltage variation |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC MO-178 compatible. Anode (pin 2) grounded; cathode (pin 1) delivers regulated 2.5 V output; pin 3 is NC (no connect) and must float or tie to anode per EMI mitigation guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Output / Shunt Current Sink | Regulated 2.5 V node; connects to series resistor and load; carries full shunt current |
| Anode (Pin 2) | Reference Ground | Internally connected to substrate ground; must be tied to system ground for proper regulation |
| NC (Pin 3) | No Connect | Unused terminal; leave floating or connect to pin 2 in high-EMI environments per TI recommendation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications requiring −40°C to +125°C operation and reliability testing |
| No output capacitor required | Stable regulation with any capacitive load, reducing BOM count and board area in compact designs |
| Low 60 μA minimum operating current | Enables battery-powered or energy-harvesting systems to maintain reference accuracy at ultra-low power |
| 100 ppm/°C max tempco | Guarantees tight voltage stability across wide ambient and junction temperature swings |
| Zener-zap trimmed accuracy | Factory-trimmed via wafer-level fuse/Zener adjustment to achieve ±0.1% initial tolerance |
Applications
| Automotive Sensor Conditioning | Industrial Data Acquisition |
|---|---|
Use Scenario: Signal conditioning for pressure, temperature, and position sensors in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for sensor bridge excitation and ADC input scaling. Use Value: Enables <±0.1% measurement accuracy over full automotive temperature range without recalibration. |
Use Scenario: High-resolution analog input modules in PLCs and process controllers interfacing with 4–20 mA transmitters. IC Role / Device Role / Timing Role: Supplies precision reference for 16-bit+ SAR ADCs and isolated analog front-ends. Use Value: Maintains system linearity and long-term stability despite thermal cycling and supply ripple. |
| Portable Medical Instrumentation | Energy Infrastructure Monitoring |
Use Scenario: Battery-powered patient monitors and portable diagnostic devices requiring low-power, high-accuracy analog sensing. IC Role / Device Role / Timing Role: Reference source for low-noise instrumentation amplifiers and medical-grade ADCs. Use Value: Delivers 35 μVrms noise performance and 60 μA min current to extend battery life while preserving clinical-grade accuracy. |
Use Scenario: Smart metering and grid-edge monitoring units measuring voltage, current, and power quality in substations. IC Role / Device Role / Timing Role: Precision voltage reference for metrology-grade energy measurement ICs and isolation amplifiers. Use Value: Supports ANSI C12.20 Class 0.2 accuracy compliance with guaranteed tempco and long-term stability. |
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 | 2.5 V, ±0.5% initial tolerance (C grade), 75 ppm/°C max tempco, 60 μA min current, SOT-23 | Lower accuracy and higher tempco; suitable for cost-sensitive non-automotive applications | Select when AEC-Q100 qualification and ±0.1% tolerance are not required |
| MAX6002EUR+T | 2.5 V, ±0.2% initial tolerance (B grade), 50 ppm/°C max tempco, 60 μA min current, SOT-23 | Higher accuracy than TL4050 but no AEC-Q100 qualification; lower noise (20 μVrms) | Prefer for industrial or medical systems needing tighter tempco and lower noise, without automotive certification |
Compared with TL4050C25IDBZR and MAX6002EUR+T, the LM4040QBIM3X2.5/NOPB uniquely combines AEC-Q100 Grade 1 qualification, ±0.1% tolerance, and proven stability in harsh automotive environments-making it the only choice where functional safety and long-term reliability under thermal stress are mandatory.
Availability
LM4040QBIM3X2.5/NOPB is available at Aetrix Electronics and suitable for automotive sensor modules, industrial data acquisition systems, and portable medical instrumentation requiring stable component supply with full traceability and lifecycle support.
Supply support for LM4040QBIM3X2.5/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 reference design and automotive-grade component validation.
The LM4040-N/Q1 product line delivers micropower shunt references optimized for space-constrained, high-reliability applications-including automotive, industrial, and medical systems-where accuracy, stability, and qualification rigor are critical.
FAQ
What is the operating temperature range for LM4040QBIM3X2.5/NOPB?
The LM4040QBIM3X2.5/NOPB is rated for −40°C to +125°C ambient temperature and is AEC-Q100 Grade 1 qualified, making it suitable for under-hood automotive applications and industrial environments with extreme thermal cycling. This range is validated per TI's automotive reliability test standards and confirmed in the device's Recommended Operating Conditions table.
Does LM4040QBIM3X2.5/NOPB require an output capacitor?
No, the LM4040QBIM3X2.5/NOPB does not require an output capacitor due to its internally compensated shunt architecture. It remains stable with any capacitive load, including ADC input capacitance or long PCB traces-eliminating a common BOM item and simplifying layout in space-constrained designs.
What is the minimum operating current for LM4040QBIM3X2.5/NOPB?
The LM4040QBIM3X2.5/NOPB requires a minimum operating current of 60 μA at 25°C to maintain regulation within specification. This value increases slightly over temperature (to 65 μA at TMIN/TMAX), enabling ultra-low-power operation in battery-backed or energy-harvesting systems while preserving 2.5 V accuracy.
How does LM4040QBIM3X2.5/NOPB achieve ±0.1% initial tolerance?
The LM4040QBIM3X2.5/NOPB achieves ±0.1% initial tolerance through wafer-level Zener-zap and fuse trimming during sort testing. This precision adjustment corrects process variations before packaging, ensuring every LM4040QBIM3X2.5/NOPB unit meets A-grade specification at 25°C without post-package calibration.
Is LM4040QBIM3X2.5/NOPB pin-compatible with other LM4040 variants in SOT-23?
Yes, all LM4040 variants in the SOT-23 (DBZ) package-including LM4040AIM3, LM4040BIM3, and LM4040QBIM3X2.5/NOPB-share identical pinout (cathode/anode/NC), mechanical footprint, and solder reflow profile. This allows direct substitution within the same voltage grade and tolerance class when redesigning for enhanced qualification or accuracy.
LM4040QBIM3X2.5/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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040QBIM3X2.5/NOPB FAQ
1.How can I place an order for LM4040QBIM3X2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040QBIM3X2.5/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 LM4040QBIM3X2.5/NOPB reliable?
The price and inventory of LM4040QBIM3X2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040QBIM3X2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040QBIM3X2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040QBIM3X2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040QBIM3X2.5/NOPB?
LM4040QBIM3X2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040QBIM3X2.5/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 LM4040QBIM3X2.5/NOPB?
For technical support, including LM4040QBIM3X2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040QBIM3X2.5/NOPB requirements.
6.How does Aetrix verify that LM4040QBIM3X2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040QBIM3X2.5/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 LM4040QBIM3X2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040QBIM3X2.5/NOPB?
All LM4040QBIM3X2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040QBIM3X2.5/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 LM4040QBIM3X2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4040QBIM3X2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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