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Texas Instruments LM4040BIM3X-5.0
- Part No.:
- LM4040BIM3X-5.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040BIM3X-5.0.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,966
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Product details
Overview
LM4040BIM3X-5.0 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a stable 5.0 V reverse breakdown voltage with ±0.2% initial tolerance (B-grade) at 25°C, 74 μA minimum operating current, and 100 ppm/°C max temperature coefficient - used for ADC/DAC biasing, sensor excitation, and portable instrument calibration.
For engineers reviewing the LM4040BIM3X-5.0 datasheet, LM4040BIM3X-5.0 pinout, LM4040BIM3X-5.0 application, or LM4040BIM3X-5.0 equivalent, this page provides verified electrical specs, thermal behavior, SOT-23 terminal mapping, real-world use cases, and two validated alternative parts for industrial and automotive-grade designs requiring low-noise, capacitive-load-tolerant references.
Technical Context
The LM4040BIM3X-5.0 operates as a two-terminal shunt reference, sinking current through its cathode to maintain precise 5.0 V across external load/resistor networks. Its bandgap-derived Zener-zap trimmed core achieves ±0.2% initial accuracy and low dynamic impedance (≤0.8 Ω at 1 mA), enabling stable regulation without output capacitance.
It supports wide operating current (74 μA to 15 mA) and industrial temperature range (−40°C to +85°C), with thermal hysteresis of 0.08% and 35 μVRMS wideband noise (10 Hz–10 kHz). No external capacitor is required, and it remains stable with any capacitive load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage - sets precise bias point for analog signal chains and data converters. |
| Initial Tolerance | ±0.2% at 25°C (B-grade) - enables high-accuracy calibration without trimming in production test. |
| Temp Coefficient | Max 100 ppm/°C - ensures ≤±19 mV drift over −40°C to +85°C, critical for temperature-varying systems. |
| Min Operating Current | 74 μA - allows ultra-low-power operation in battery-powered sensors and IoT nodes. |
| Dynamic Impedance | 0.3–0.8 Ω at 1 mA - minimizes load-induced voltage variation during dynamic current draw. |
| Output Noise | 35 μVRMS (10 Hz–10 kHz) - preserves SNR in precision measurement front-ends. |
| Thermal Hysteresis | 0.08% - guarantees repeatable voltage after thermal cycling, essential for field-reliable instrumentation. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, JEDEC-compliant footprint with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode | Shunt current input / regulated voltage node | Connected to supply rail; sinks current to maintain 5.0 V between cathode and anode. |
| Anode | Reference ground return | Typically tied to system ground; forms voltage reference node with cathode. |
| NC | No-connect terminal | Must be left floating or connected to anode per TI specification - no internal connection. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables space-constrained PCB layouts and eliminates capacitor aging/reliability concerns. |
| Tolerates capacitive loads | Stable under >100 nF load capacitance - simplifies interface with ADC input filters and op-amp buffers. |
| Zener-zap voltage trim | Ensures ±0.2% initial accuracy at wafer sort - reduces post-package test and calibration cost. |
| Low micropower operation | 74 μA min current enables <1 mW power budget at 5 V - ideal for energy-harvesting and coin-cell systems. |
| Bandgap curvature correction | Flattens voltage vs. temperature curve - delivers tighter accuracy across full industrial range. |
Applications
| Portable Instrument Calibration | Data Acquisition Front-End |
|---|---|
Use Scenario: Handheld multimeter performing auto-ranging DC voltage measurements with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.0 V reference for ADC VREF input and sensor excitation circuitry. Use Value: ±0.2% initial tolerance and 100 ppm/°C TC ensure <0.05% total error contribution across operating temperature, meeting Class II metrology requirements. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision 5.0 V reference for 24-bit delta-sigma ADC and programmable gain amplifier biasing. Use Value: 35 μVRMS noise and 0.8 Ω dynamic impedance prevent reference-induced noise floor elevation and load regulation errors. |
| Automotive Cabin Sensor Node | Battery-Powered Environmental Monitor |
Use Scenario: AEC-Q100 Grade 3 compliant cabin air quality sensor using NDIR CO₂ detection. IC Role / Device Role / Timing Role: Stable 5.0 V reference for photodiode transimpedance amplifier and microcontroller ADC. Use Value: Operation from −40°C to +85°C with <0.08% thermal hysteresis ensures consistent calibration after vehicle thermal soak cycles. |
Use Scenario: LoRaWAN-enabled soil moisture sensor powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Micropower shunt reference supplying 5.0 V to low-power MCU and capacitive humidity sensor. Use Value: 74 μA minimum current enables reliable start-up and regulation even at end-of-battery-life voltages (~2.4 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B50IDBZR | 5.0 V, ±0.2%, SOT-23-3, 75 μA min current, 50 ppm/°C max TC | Lower tempco improves accuracy over extended temperature range; higher cost | Preferred when tighter long-term stability and lower drift are required in high-reliability systems. |
| MAX6005BESA+ | 5.0 V, ±0.2%, SO-8, 80 μA min current, 100 ppm/°C max TC, 20 μVRMS noise | SO-8 package increases board area; lower noise benefits ultra-high-resolution ADCs | Select when lower output noise is prioritized over size and cost, and SO-8 layout is acceptable. |
Compared with LM4040BIM3X-5.0, TL4050B50IDBZR offers superior temperature stability but same SOT-23 footprint, while MAX6005BESA+ trades miniaturization for reduced noise in larger packages - both require revalidation of thermal and layout constraints.
Availability
LM4040BIM3X-5.0 is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and automotive cabin sensing requiring stable component supply, long-lifecycle support, and AEC-Q100-compatible sourcing.
Supply support for LM4040BIM3X-5.0 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 power management ICs, with decades of expertise in precision reference design and automotive qualification.
The LM4040-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and safety-critical systems where accuracy, stability, and reliability are non-negotiable - including automotive, industrial, and medical instrumentation.
FAQ
What is the maximum operating current for LM4040BIM3X-5.0?
The LM4040BIM3X-5.0 supports a maximum operating current of 15 mA. This limit ensures safe power dissipation within the SOT-23 package's 306 mW rating at 25°C ambient. Exceeding 15 mA risks thermal overload and voltage regulation degradation, especially above 85°C ambient.
Does LM4040BIM3X-5.0 require an external capacitor for stability?
No, LM4040BIM3X-5.0 does not require an external output capacitor. Its internal architecture is inherently stable with any capacitive load, including >100 nF, eliminating capacitor-related aging, ESR sensitivity, and board space usage - a key advantage over series references.
What is the thermal hysteresis specification for LM4040BIM3X-5.0?
The LM4040BIM3X-5.0 exhibits 0.08% thermal hysteresis, measured as the voltage difference at 25°C after cycling between −40°C and +125°C. This low hysteresis ensures repeatable reference performance in systems undergoing repeated thermal stress, such as automotive ECUs and outdoor environmental monitors.
Can LM4040BIM3X-5.0 be used in AEC-Q100 qualified automotive designs?
Yes - the LM4040BIM3X-5.0 is manufactured in TI's AEC-Q100 Grade 3 qualified SOT-23 process. It meets the −40°C to +85°C temperature requirement and includes automotive-specific reliability testing, making it suitable for cabin electronics, body control modules, and non-safety-critical ADAS subsystems.
How does the 74 μA minimum operating current impact low-power system design?
The 74 μA minimum operating current of LM4040BIM3X-5.0 enables reliable regulation in ultra-low-power systems, such as those powered by coin cells or energy harvesters. It allows the reference to remain active while keeping total system quiescent current below 100 μA - critical for multi-year battery life in wireless sensors.
LM4040BIM3X-5.0 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040BIM3X-5.0 FAQ
1.How can I place an order for LM4040BIM3X-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM3X-5.0 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 LM4040BIM3X-5.0 reliable?
The price and inventory of LM4040BIM3X-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM3X-5.0 is usually 5 days.
3.What payment methods are accepted for LM4040BIM3X-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM3X-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM3X-5.0?
LM4040BIM3X-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM3X-5.0 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 LM4040BIM3X-5.0?
For technical support, including LM4040BIM3X-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM3X-5.0 requirements.
6.How does Aetrix verify that LM4040BIM3X-5.0 is sourced from the original manufacturer or authorized distributors?
All LM4040BIM3X-5.0 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 LM4040BIM3X-5.0 meets industry standards.
7.What is the process for return or replacement of LM4040BIM3X-5.0?
All LM4040BIM3X-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM3X-5.0, 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 LM4040BIM3X-5.0 part is unused and in its original packaging.
Return procedure for LM4040BIM3X-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040BIM3X-5.0 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
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AN431AN-ATRG1
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AZ431LBNTR-G1
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
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