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Analog Devices Inc./Maxim Integrated LM4050BIM3-2.1-T
- Part No.:
- LM4050BIM3-2.1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3-2.1-T.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:4,700
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Product details
Overview
LM4050BIM3-2.1-T from Maxim Integrated is a precision 2.048V shunt voltage reference in SC70-3 package, delivering ±0.2% initial accuracy, ±15ppm/°C temperature coefficient over –40°C to +125°C, and stable operation from 60µA to 15mA shunt current. It serves as a compact, low-noise (28µVRMS) reference for ADC/DAC biasing and portable power management circuits.
For engineers reviewing the LM4050BIM3-2.1-T datasheet, LM4050BIM3-2.1-T pinout, LM4050BIM3-2.1-T application, or LM4050BIM3-2.1-T equivalent, this page provides verified electrical specs, thermal performance data, SC70 package layout, and validated alternatives for battery-powered instrumentation and industrial sensor interfaces.
Technical Context
The LM4050BIM3-2.1-T implements a laser-trimmed bandgap core with BiCMOS process technology, enabling precise 2.048V reverse breakdown voltage regulation without external capacitors. Its shunt architecture sinks variable current to maintain output stability across wide load and supply variations.
It operates within a guaranteed –40°C to +125°C ambient range, exhibits ≤1.0Ω dynamic impedance at 1mA, and tolerates any capacitive load while maintaining stability-eliminating need for output capacitance in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V nominal; fixed reverse breakdown voltage optimized for 12-bit DAC/ADC full-scale reference alignment. |
| Initial Accuracy | ±0.2% (B grade); ensures ≤±4.1mV absolute error at +25°C for high-fidelity analog signal chains. |
| Tempco | ±15ppm/°C max; guarantees ≤±3.05mV drift over full –40°C to +125°C range, critical for outdoor or automotive sensors. |
| Shunt Current Range | 60µA to 15mA; supports ultra-low-power sleep modes and high-current regulation without external components. |
| Output Noise | 28µVRMS (10Hz–10kHz); enables high-resolution measurement systems where noise floor directly impacts ENOB. |
| Dynamic Impedance | 0.3–0.8Ω at 1mA; maintains tight voltage regulation during fast load transients in microcontroller power domains. |
| Long-Term Stability | 120ppm over 1000h; ensures reference integrity in sealed industrial modules with no field recalibration. |
Pinout & Package
LM4050BIM3-2.1-T uses the 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23, suitable for ultra-dense PCB layouts in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Positive terminal (anode) | Connects to regulated output node; sinks current when reverse-biased above 2.048V. |
| 2 (−) | Negative terminal (cathode) | Reference ground return path; must be tied to system ground for accurate voltage establishment. |
| 3 (N.C.) | No connection | Must be left floating or shorted to Pin 2; not internally bonded-prevents parasitic leakage paths. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | 1.8mm × 1.8mm area saves >50% board space vs. SOT23, enabling miniaturized medical wearables and IoT edge nodes. |
| No output capacitor required | Internally compensated design eliminates external stabilization cap-reducing BOM count and layout sensitivity. |
| Capacitive load tolerance | Stable with any output capacitance (0–∞), simplifying integration into noisy switching power supply rails. |
| Micropower operation | 60µA minimum operating current enables multi-year battery life in always-on sensor transmitters. |
| Wide temperature guarantee | Specified from –40°C to +125°C ensures reliability in under-hood automotive or factory-floor control cabinets. |
Applications
| Portable Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature/humidity with 16-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Provides stable 2.048V reference for ADC full-scale calibration and offset trimming. Use Value: ±0.2% initial accuracy and ±15ppm/°C tempco ensure <0.01% total unadjusted error over field temperature swings. |
Use Scenario: 4–20mA loop-powered pressure transmitters in oil & gas refineries. IC Role / Device Role / Timing Role: Supplies precision excitation voltage for bridge sensors and reference for DAC-controlled current output stage. Use Value: 28µVRMS low noise prevents degradation of 14-bit effective resolution in analog front-end circuitry. |
| Medical Wearable ECG Front-Ends | Automotive Cabin Temperature Sensors |
Use Scenario: Ultra-low-power wearable ECG patches sampling at 250SPS with integrated analog filters. IC Role / Device Role / Timing Role: Shunt reference for rail-to-rail op-amp biasing and ADC reference in single-supply 3.3V architecture. Use Value: 60µA min operating current extends coin-cell battery life beyond 12 months in continuous monitoring mode. |
Use Scenario: Cabin air quality modules requiring NTC thermistor linearization over –40°C to +85°C. IC Role / Device Role / Timing Role: Stable 2.048V reference for ratiometric measurement against precision current source. Use Value: Guaranteed operation to +125°C allows placement near HVAC ducts without derating or thermal shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | Adjustable (2.5V min), ±0.5% initial accuracy, 90ppm/°C tempco, SOT23-3 | Requires two external resistors for 2.048V setting; higher tempco limits high-temp precision use | Select when adjustable output or cost sensitivity outweighs fixed-voltage precision needs. |
| ADR3420ARJZ-R7 | 2.048V fixed, ±0.1% initial accuracy, ±3ppm/°C tempco, SOT23-5 (with enable) | Higher accuracy and lower tempco, but larger 5-pin SOT23 package and higher quiescent current (120µA min) | Choose for metrology-grade stability where SC70 size constraint is relaxed and ultra-low drift is mandatory. |
Compared with TLVH431ACDBVR and ADR3420ARJZ-R7, LM4050BIM3-2.1-T uniquely balances SC70 size, 0.2% accuracy, 15ppm/°C tempco, and micropower operation-making it optimal for space-limited, battery-critical applications where moderate precision suffices.
Availability
LM4050BIM3-2.1-T is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor nodes, and automotive cabin electronics requiring stable component supply with full temperature-range assurance.
Supply support for LM4050BIM3-2.1-T 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and medical applications.
The LM4050 series targets space-constrained, low-power systems needing stable voltage references-especially portable, battery-operated equipment where SC70 packaging and micropower operation are essential.
FAQ
What is the guaranteed operating temperature range for LM4050BIM3-2.1-T?
The LM4050BIM3-2.1-T is fully specified and guaranteed over –40°C to +125°C ambient temperature. All key parameters-including output voltage, tempco, and dynamic impedance-are tested and warranted across this full industrial range, making LM4050BIM3-2.1-T suitable for under-hood automotive or factory-floor deployments without derating.
Does LM4050BIM3-2.1-T require an external output capacitor for stability?
No, LM4050BIM3-2.1-T does not require an external output capacitor. Its internal compensation ensures unconditional stability with any capacitive load-from 0pF to several µF-eliminating risk of oscillation in noisy environments and reducing bill-of-materials count in compact designs using LM4050BIM3-2.1-T.
What is the minimum shunt current needed for LM4050BIM3-2.1-T to regulate properly?
The LM4050BIM3-2.1-T requires a minimum shunt current of 60µA to maintain regulation. Below this threshold, output voltage deviates from specification. Designers must ensure the source resistor and load conditions sustain ≥60µA shunt current across all operating conditions, including lowest supply voltage and highest load current, to guarantee accuracy of LM4050BIM3-2.1-T.
How does the pin configuration of LM4050BIM3-2.1-T differ from standard zener diodes?
LM4050BIM3-2.1-T uses a 3-pin SC70 package with Pin 1 (+), Pin 2 (−), and Pin 3 (N.C.). Unlike discrete zeners, Pin 3 is unconnected and must remain floating or tied to Pin 2-its presence accommodates die layout but adds no electrical function. This differs from 2-terminal zeners and avoids misinterpretation as a 3-terminal regulator in LM4050BIM3-2.1-T layout.
Can LM4050BIM3-2.1-T replace LM4050BEM3-2.1+T in existing designs?
Yes, LM4050BIM3-2.1-T is functionally and pin-compatible with LM4050BEM3-2.1+T, both specifying 2.048V, ±0.2% accuracy, and SC70-3 package. The "I" suffix denotes tape-and-reel packaging per Maxim's ordering convention; electrical performance, thermal specs, and pinout are identical-enabling drop-in replacement without layout changes for LM4050BIM3-2.1-T.
LM4050BIM3-2.1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 28µVrms
- 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
LM4050BIM3-2.1-T FAQ
1.How can I place an order for LM4050BIM3-2.1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3-2.1-T 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 LM4050BIM3-2.1-T reliable?
The price and inventory of LM4050BIM3-2.1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3-2.1-T is usually 5 days.
3.What payment methods are accepted for LM4050BIM3-2.1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3-2.1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3-2.1-T?
LM4050BIM3-2.1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3-2.1-T 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 LM4050BIM3-2.1-T?
For technical support, including LM4050BIM3-2.1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3-2.1-T requirements.
6.How does Aetrix verify that LM4050BIM3-2.1-T is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3-2.1-T 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 LM4050BIM3-2.1-T meets industry standards.
7.What is the process for return or replacement of LM4050BIM3-2.1-T?
All LM4050BIM3-2.1-T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3-2.1-T, 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 LM4050BIM3-2.1-T part is unused and in its original packaging.
Return procedure for LM4050BIM3-2.1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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