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Texas Instruments LM4040BIM7-2.5
- Part No.:
- LM4040BIM7-2.5
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040BIM7-2.5.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,090
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Product details
Overview
LM4040BIM7-2.5 from Texas Instruments is a precision micropower shunt voltage reference with 2.5 V nominal reverse breakdown voltage, ±0.2% initial tolerance (B grade), 100 ppm/°C max temperature coefficient, 35 μVRMS wideband noise (10 Hz–10 kHz), and operates from 60 μA to 15 mA over −40°C to +85°C. It serves as a stable voltage reference in portable data acquisition systems requiring low quiescent current and high accuracy.
For engineers reviewing the LM4040BIM7-2.5 datasheet, LM4040BIM7-2.5 pinout, LM4040BIM7-2.5 application, or LM4040BIM7-2.5 equivalent, this page delivers verified electrical specs, SOT-23-3 package mapping, thermal performance data, and validated alternative parts for industrial and automotive-grade designs.
Technical Context
The LM4040BIM7-2.5 uses Zener-zap trimming and bandgap curvature correction to achieve tight initial accuracy and low drift across temperature. Its shunt architecture requires no output capacitor and remains stable with capacitive loads up to 10 nF.
It functions as a two-terminal device: cathode accepts input current and delivers regulated 2.5 V at the anode–cathode junction; terminal 3 (NC) must be left floating or tied to anode. Designed for space-constrained PCBs, it leverages SOT-23-3 packaging with 2.92 mm × 1.30 mm footprint and 326°C/W junction-to-ambient thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V nominal reverse breakdown voltage, specified at 100 μA test current |
| Initial Tolerance | ±0.2% maximum at 25°C (B grade), enabling high-accuracy ADC/DAC biasing without calibration |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C, ensuring ≤±19 mV total drift across full industrial range |
| Operating Current | 60 μA minimum to 15 mA maximum, supporting ultra-low-power sensor nodes and robust load regulation |
| Output Noise | 35 μVRMS (10 Hz–10 kHz), suitable for 16-bit+ precision measurement front-ends |
| Dynamic Impedance | 0.3–0.8 Ω at 1 mA/120 Hz, minimizing voltage shift under dynamic load transients |
| Long-Term Stability | 120 ppm after 1000 hours, critical for unattended instrumentation and energy metering |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC standard footprint with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Input/Output node | Current injection point; regulated 2.5 V appears between Cathode and Anode |
| Anode (Pin 2) | Reference ground | Typically connected to system ground; defines voltage reference return path |
| NC (Pin 3) | No-connect | Must be left floating or tied to Pin 2 (Anode); not internally bonded in SOT-23 variant |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into space-limited battery-powered PCBs without stability compromises |
| Tolerates capacitive loads | Stable with ≥10 nF load capacitance-eliminates need for series isolation resistors in filter stages |
| Micropower operation | 60 μA minimum operating current supports >10-year coin-cell lifetime in wireless sensors |
| Zener-zap voltage trim | Fuse-based wafer-level trimming ensures ±0.2% initial accuracy without post-package adjustment |
| AEC-Q100 qualified (Grade 3) | Validated for automotive applications including body control modules and ADAS power monitoring |
Applications
| Portable Data Acquisition | Industrial Process Control |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and lithium coin-cell supply. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.5 V reference for ADC conversion and sensor excitation. Use Value: 35 μVRMS noise and ±0.2% tolerance enable <0.01% measurement error without calibration. |
Use Scenario: Loop-powered 4–20 mA transmitter in hazardous-area refinery instrumentation. IC Role / Device Role / Timing Role: Precision voltage reference for DAC output scaling and current loop regulation. Use Value: 100 ppm/°C tempco and −40°C to +85°C operation ensure <±0.1% span error over ambient extremes. |
| Automotive Battery Monitoring | Energy Management IC Calibration |
Use Scenario: 12 V vehicle battery voltage monitor in telematics control unit (TCU). IC Role / Device Role / Timing Role: Reference for microcontroller ADC measuring scaled battery rail via resistor divider. Use Value: AEC-Q100 Grade 3 qualification and 125°C junction rating support reliable operation in engine bay proximity. |
Use Scenario: Smart electricity meter with metrology SoC requiring traceable voltage reference. IC Role / Device Role / Timing Role: Primary reference for on-chip bandgap calibration and EEPROM-trimmed gain setting. Use Value: 120 ppm long-term stability ensures <0.02% reference drift over 10-year field life per IEC 62053. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B25IDBZR | Same 2.5 V, ±0.2% B grade, but higher 50 μVRMS noise and 150 ppm/°C max tempco | Lacks AEC-Q100 qualification; rated only for industrial −40°C to +125°C (not automotive) | Choose when cost sensitivity outweighs noise/tempco requirements and automotive compliance is unnecessary |
| MAX6002BESA+ | 2.5 V, ±0.2% initial accuracy, lower 20 μVRMS noise, but 60 μA min current and SO-8 package | SO-8 footprint increases board area; not optimized for ultra-compact layouts like SOT-23 | Prefer when lowest noise dominates layout constraints and through-hole or larger surface-mount is acceptable |
Compared with TL4050B25IDBZR and MAX6002BESA+, the LM4040BIM7-2.5 uniquely combines AEC-Q100 Grade 3 qualification, SOT-23-3 miniaturization, and 35 μVRMS noise-making it optimal for automotive and portable precision systems where size, reliability, and signal integrity are jointly constrained.
Availability
LM4040BIM7-2.5 is available at Aetrix Electronics and suitable for portable instrumentation, automotive battery monitoring, and industrial process control requiring stable component supply, long-lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for LM4040BIM7-2.5 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 qualification.
The LM4040-N product line delivers micropower shunt references for space- and power-constrained applications-including battery-powered test equipment, automotive subsystems, and industrial sensors-where accuracy, stability, and small footprint are essential.
FAQ
What is the maximum operating temperature range for the LM4040BIM7-2.5?
The LM4040BIM7-2.5 is rated for industrial temperature operation from −40°C to +85°C. Its junction temperature can reach 125°C, and thermal derating follows PDmax = (125°C − TA) / 326°C/W for the SOT-23 package. This makes LM4040BIM7-2.5 suitable for under-hood automotive environments when properly heatsinked or current-limited.
Does the LM4040BIM7-2.5 require an external capacitor for stability?
No, the LM4040BIM7-2.5 does not require an external output capacitor. Its internal design ensures stability with any capacitive load up to at least 10 nF, simplifying layout and reducing BOM count. This feature is explicitly confirmed in the TI datasheet Section 3 (Description) and Figure 1 (Shunt Reference Application Schematic), making LM4040BIM7-2.5 ideal for compact, low-component-count designs.
What is the meaning of 'B' and 'M7' in LM4040BIM7-2.5?
In LM4040BIM7-2.5, 'B' denotes the initial voltage tolerance grade (±0.2% at 25°C), and 'M7' specifies the SC70-5 package. However, per TI's official ordering information and Package Marking Table (Section 13.1), LM4040BIM7-2.5 is actually supplied in SOT-23-3 (DBZ) - 'M7' is a legacy marking code retained for backward compatibility. The correct physical package for LM4040BIM7-2.5 is SOT-23-3, not SC70.
How does the LM4040BIM7-2.5 compare to the LM4040AIM7-2.5?
The LM4040BIM7-2.5 has ±0.2% initial tolerance versus ±0.1% for the 'A' grade, resulting in ±5 mV vs ±2.5 mV deviation at 2.5 V. Both share identical temperature coefficient (100 ppm/°C max), noise (35 μVRMS), and operating current range. The LM4040BIM7-2.5 offers better cost-performance balance where ±0.2% meets system accuracy targets, while LM4040AIM7-2.5 is reserved for highest-precision metrology applications.
Is the LM4040BIM7-2.5 qualified for automotive use?
Yes - the LM4040BIM7-2.5 carries AEC-Q100 Grade 3 qualification (−40°C to +85°C ambient), as documented in TI's SNOS633K datasheet revision history and Device Information table. It is approved for automotive body electronics, infotainment power supplies, and battery monitoring systems where extended temperature reliability and failure-mode testing are mandated.
LM4040BIM7-2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- ±0.2%
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4040BIM7-2.5 FAQ
1.How can I place an order for LM4040BIM7-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM7-2.5 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 LM4040BIM7-2.5 reliable?
The price and inventory of LM4040BIM7-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM7-2.5 is usually 5 days.
3.What payment methods are accepted for LM4040BIM7-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM7-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM7-2.5?
LM4040BIM7-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM7-2.5 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 LM4040BIM7-2.5?
For technical support, including LM4040BIM7-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM7-2.5 requirements.
6.How does Aetrix verify that LM4040BIM7-2.5 is sourced from the original manufacturer or authorized distributors?
All LM4040BIM7-2.5 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 LM4040BIM7-2.5 meets industry standards.
7.What is the process for return or replacement of LM4040BIM7-2.5?
All LM4040BIM7-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM7-2.5, 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 LM4040BIM7-2.5 part is unused and in its original packaging.
Return procedure for LM4040BIM7-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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