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Texas Instruments LM4050BIM3-5.0
- Part No.:
- LM4050BIM3-5.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3-5.0.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:574
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Product details
Overview
LM4050BIM3-5.0 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 5.0 V reverse breakdown voltage with ±10 mV (±0.2%) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 56 μA to 15 mA supply current and supports industrial (−40°C to +85°C) and extended (−40°C to +125°C) temperature ranges - ideal for high-accuracy ADC/DAC biasing and portable instrumentation.
For engineers reviewing the LM4050BIM3-5.0 datasheet, LM4050BIM3-5.0 pinout, LM4050BIM3-5.0 application, or LM4050BIM3-5.0 equivalent, key selection considerations include its no-output-capacitor-required operation, capacitive-load tolerance, 0.5 Ω dynamic impedance at 1 mA, thermal hysteresis of 1.4 mV, and compatibility with space-constrained battery-powered systems requiring long-term stability (120 ppm drift over 1000 hrs).
Technical Context
The LM4050BIM3-5.0 uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, enabling stable 5.0 V reference performance across −40°C to +125°C without external components. Its low 0.5 Ω dynamic impedance and 93 μVrms noise support high-resolution data acquisition where supply rejection and signal integrity are critical.
It functions as a two-terminal shunt regulator: cathode accepts input current and sets output voltage via reverse breakdown, while anode connects to system ground. The NC pin (Pin 3) is unconnected and must remain floating or tied to Anode - eliminating layout ambiguity and ensuring predictable load regulation (≤8 mV change from 1 mA to 15 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±10 mV (±0.2%) at 25°C - B-grade accuracy for cost-sensitive precision designs |
| Temp Coefficient | ≤50 ppm/°C max over −40°C to +125°C - ensures ≤±3.25 mV total drift across full range |
| Dynamic Impedance | 0.5 Ω at 1 mA - enables tight load regulation and minimal output perturbation under varying sink current |
| Wideband Noise | 93 μVrms (10 Hz–10 kHz) - suitable for 16-bit+ SAR ADC reference applications |
| Operating Current | 56 μA min to 15 mA max - supports ultra-low-power sensor nodes and high-current calibration circuits |
| Long-Term Stability | 120 ppm over 1000 hrs at 25°C - guarantees minimal aging-induced error in deployed systems |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, surface-mount, 3-pin configuration with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage reference node | Connects to regulated voltage rail; sinks all load + reference current; defines 5.0 V output at this node |
| Anode (Pin 2) | Ground reference terminal | Must be connected to system ground; serves as return path for cathode current and reference potential reference |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (Anode); no electrical function - prevents accidental misrouting |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with zero external capacitance - reduces BOM count and PCB area in compact layouts |
| Tolerates capacitive loads | Remains stable with any value of output capacitance - simplifies filtering for noise-sensitive analog stages |
| Fixed 5.0 V breakdown | Precision-trimmed during wafer sort - eliminates need for external resistor networks or trimming potentiometers |
| Low quiescent current | 56 μA minimum operating current - extends battery life in portable multimeters and handheld test equipment |
| Industrial & extended temp range | Specified from −40°C to +125°C - supports automotive under-hood and industrial process control deployments |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
|
Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and pressure with 16-bit ADC. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.0 V excitation and ADC reference voltage. Use Value: 93 μVrms noise and 50 ppm/°C TC ensure <0.01% measurement error across −25°C to +70°C operating range. |
Use Scenario: 4–20 mA loop-powered transmitter conditioning RTD and thermocouple signals. IC Role / Device Role / Timing Role: Precision 5.0 V reference for DAC output scaling and sensor bridge excitation. Use Value: 0.5 Ω dynamic impedance maintains reference accuracy despite 1–15 mA loop current variations. |
| Medical Instrumentation | Automotive Body Control Modules |
|
Use Scenario: Portable ECG front-end with low-noise amplifiers and high-resolution ADC. IC Role / Device Role / Timing Role: Low-noise 5.0 V reference for analog signal chain biasing and ADC reference. Use Value: 120 ppm long-term stability ensures calibration validity over 2-year device service life without field recalibration. |
Use Scenario: In-vehicle cabin sensor hub monitoring ambient light, occupancy, and air quality. IC Role / Device Role / Timing Role: Stable 5.0 V reference for microcontroller ADC and analog sensor interfaces. Use Value: Extended −40°C to +125°C rating and AEC-Q100-compatible LM4050BIM3-5.0-Q1 variant enable direct use in under-dash environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040BIM3-5.0 | Higher 100 ppm/°C max TC; 100 μVrms noise; 60 μA min current; same SOT-23 package | Lower accuracy and higher noise limit use in <12-bit systems; less suitable for precision data acquisition | Select when cost priority outweighs 50 ppm/°C TC and 93 μVrms noise requirements |
| REF5050IDBZR | Series topology; 3 ppm/°C TC; 4.8 μVrms noise; requires input capacitor; SOIC-8 package | Higher accuracy and lower noise but larger footprint and more complex layout; not drop-in compatible | Choose for metrology-grade systems where 0.003% TC and sub-5 μV noise justify added board area and design effort |
Compared with LM4040BIM3-5.0, the LM4050BIM3-5.0 delivers tighter temperature stability and lower noise in identical SOT-23 form factor; versus REF5050IDBZR, it trades absolute precision for simplicity, size, and shunt flexibility - making LM4050BIM3-5.0 optimal for embedded systems balancing accuracy, space, and ease of use.
Availability
LM4050BIM3-5.0 is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and automotive body control modules requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050BIM3-5.0 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 technologies, with decades of expertise in precision reference design.
The LM4050-N family was engineered for space-constrained, battery-operated, and high-accuracy analog systems - delivering micropower shunt references with factory-trimmed voltage, low noise, and robust thermal performance across industrial and automotive environments.
FAQ
What is the output voltage tolerance of the LM4050BIM3-5.0 at 25°C?
The LM4050BIM3-5.0 has a B-grade initial tolerance of ±10 mV (±0.2%) at 25°C, verified by production testing per TI's SNOS455G datasheet Section 6.8. This tolerance remains stable across its specified operating current range of 56 μA to 15 mA, with no additional calibration required.
Does the LM4050BIM3-5.0 require an external output capacitor?
No - the LM4050BIM3-5.0 is designed to operate stably without any output capacitor, as confirmed in the "Features" section of the datasheet. Its internal architecture ensures stability even with capacitive loads, simplifying layout and reducing component count in space-limited designs.
What is the maximum operating temperature range for the LM4050BIM3-5.0?
The LM4050BIM3-5.0 is rated for both industrial (−40°C to +85°C) and extended (−40°C to +125°C) temperature ranges, with full electrical specifications guaranteed across both. Junction temperature must not exceed 150°C, and derating applies above 85°C ambient per thermal resistance RθJA = 287°C/W.
How does the LM4050BIM3-5.0 compare to the LM4050AIM3-5.0?
The LM4050BIM3-5.0 differs from the A-grade LM4050AIM3-5.0 primarily in initial tolerance: ±10 mV (B-grade) vs. ±5 mV (A-grade) at 25°C. All other parameters - including temperature coefficient (≤50 ppm/°C), noise (93 μVrms), dynamic impedance (0.5 Ω), and operating current range - are identical per TI's datasheet.
Can the LM4050BIM3-5.0 be used in automotive applications?
Yes - the automotive-qualified variant LM4050BIM3-5.0-Q1 is AEC-Q100 Grade 1 certified (−40°C to +125°C) and manufactured on an automotive-grade flow. While the standard LM4050BIM3-5.0 shares identical electrical specs, only the -Q1 suffix guarantees automotive qualification and traceability.
LM4050BIM3-5.0 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:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- 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
LM4050BIM3-5.0 FAQ
1.How can I place an order for LM4050BIM3-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3-5.0 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 LM4050BIM3-5.0 reliable?
The price and inventory of LM4050BIM3-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3-5.0 is usually 5 days.
3.What payment methods are accepted for LM4050BIM3-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3-5.0?
LM4050BIM3-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3-5.0 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 LM4050BIM3-5.0?
For technical support, including LM4050BIM3-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3-5.0 requirements.
6.How does Aetrix verify that LM4050BIM3-5.0 is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3-5.0 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 LM4050BIM3-5.0 meets industry standards.
7.What is the process for return or replacement of LM4050BIM3-5.0?
All LM4050BIM3-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3-5.0, 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 LM4050BIM3-5.0 part is unused and in its original packaging.
Return procedure for LM4050BIM3-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050BIM3-5.0 Tags
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TL431AIDBZR
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