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Analog Devices Inc./Maxim Integrated LM4050BIX3-5.0-T
- Part No.:
- LM4050BIX3-5.0-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4050BIX3-5.0-T.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
LM4050BIX3-5.0-T from Maxim Integrated is a precision 5.000V, two-terminal shunt voltage reference in SC70-3 package, featuring ±0.2% initial accuracy, ±15ppm/°C temperature coefficient (max), 60µA to 15mA operating current range, and 80µVRMS wideband noise (10Hz–10kHz). It serves as a stable reference for ADC/DAC biasing, portable power monitoring, and battery management circuits.
For engineers reviewing the LM4050BIX3-5.0-T datasheet, LM4050BIX3-5.0-T pinout, LM4050BIX3-5.0-T application, or LM4050BIX3-5.0-T equivalent, this page delivers verified electrical specs, thermal performance across –40°C to +125°C, SC70 package footprint details, and real-world design guidance for micropower shunt reference implementation.
Technical Context
The LM4050BIX3-5.0-T uses a laser-trimmed bandgap core with BiCMOS process to deliver stable reverse breakdown voltage without external capacitors. Its shunt architecture sinks variable current (60µA–15mA) to maintain 5.000V across load variations while exhibiting low dynamic impedance (0.5–1.1Ω) and minimal voltage drift over temperature.
Designed for space-constrained systems, it operates reliably under capacitive loads and tolerates supply voltage fluctuations-enabling direct integration into high-precision analog front-ends where low quiescent current and minimal board area are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±10mV at +25°C (B-grade); enables accurate 12-bit+ ADC reference scaling |
| Initial Accuracy | ±0.2% (±10mV) at +25°C; reduces calibration overhead in production test |
| Tempco | ±15ppm/°C max over –40°C to +125°C; contributes ≤±15mV total drift across full range |
| Operating Current | 60µA to 15mA shunt range; supports ultra-low-power sleep modes and high-current regulation |
| Dynamic Impedance | 0.5–1.1Ω at 1mA/120Hz; ensures <1mV output perturbation during load transients |
| Output Noise | 80µVRMS (10Hz–10kHz); avoids noise-induced quantization error in precision measurement |
| Long-Term Stability | 120ppm over 1000h; maintains reference integrity in deployed industrial sensors |
Pinout & Package
LM4050BIX3-5.0-T is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23. Pin 3 is unconnected (N.C.) and must be left floating or tied to Pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (+) | Anode / Positive Terminal | Reference output node; connects to load and feedback network |
| Pin 2 (−) | Cathode / Negative Terminal | Ground return path; carries full shunt current (ISHUNT + ILOAD) |
| Pin 3 (N.C.) | No Connection | Must remain unconnected or shorted to Pin 2; no internal bond wire |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint saves >50% PCB area vs. SOT23; ideal for wearables and IoT nodes |
| No output capacitor required | Internally compensated for stability with any capacitive load; eliminates BOM cost and layout risk |
| Wide shunt current range | 60µA minimum start-up current enables operation from weak energy harvesters or coin cells |
| Low 80µVRMS noise | Enables sub-LSB accuracy in 16-bit SAR ADCs without external filtering |
| Guaranteed –40°C to +125°C operation | Validated performance across automotive under-hood and industrial control environments |
Applications
| Battery Voltage Monitoring | Portable Medical Sensors |
|---|---|
Use Scenario: Real-time Li-ion cell voltage tracking in smart battery packs with microcontroller-based fuel gauging. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.000V基准 for 12-bit ADC input scaling and threshold comparison. Use Value: ±0.2% initial accuracy and ±15ppm/°C tempco ensure <0.5% total voltage reading error across –20°C to +60°C ambient. | Use Scenario: Powering and biasing analog signal chain (ECG amplifier, sensor interface) in handheld diagnostic devices. IC Role / Device Role / Timing Role: Precision voltage reference for op-amp biasing and ADC reference rail in low-noise analog front-end. Use Value: 80µVRMS noise floor prevents degradation of SNR in sub-5µV physiological signal acquisition. |
| Industrial Process Transmitters | Energy Meter Reference |
Use Scenario: 4–20mA loop-powered field transmitter requiring stable excitation and ADC reference over wide temperature range. IC Role / Device Role / Timing Role: Two-terminal shunt reference sourcing its own bias from loop current while delivering 5.000V to signal conditioning circuitry. Use Value: 60µA–15mA operating range accommodates loop current variation while maintaining regulation and long-term stability (120ppm/1000h). | Use Scenario: High-accuracy polyphase electricity meter using isolated sigma-delta ADCs for revenue-grade measurement. IC Role / Device Role / Timing Role: Primary reference for metrology ADCs, replacing larger, higher-drift references in compact meter modules. Use Value: ±15ppm/°C tempco and guaranteed –40°C to +125°C operation meet IEC 62053-21 Class 0.2 accuracy requirements. |
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–36V) vs. fixed 5.000V; 0.5% initial accuracy; 100ppm/°C tempco; SOT23-3 | Requires external resistor divider; less stable over temperature; higher noise (120µVRMS) | Select when adjustable output or higher voltage capability is needed; verify thermal drift impact on system accuracy. |
| ADR3450ARJZ-R7 | 5.000V fixed; 0.1% initial accuracy; 10ppm/°C tempco; 50µVRMS noise; SOT23-5 (requires bypass cap) | Higher accuracy and lower noise but needs external 1µF capacitor; larger package; higher cost | Choose for metrology-grade designs where 0.1% tolerance and 10ppm/°C stability outweigh size and capacitor constraints. |
Compared with TLVH431ACDBVR and ADR3450ARJZ-R7, LM4050BIX3-5.0-T offers optimal balance of SC70 size, capacitor-free operation, and B-grade accuracy-making it preferred for space-limited, production-optimized designs where ±0.2% and ±15ppm/°C meet system requirements without added components.
Availability
LM4050BIX3-5.0-T is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor nodes, and portable medical devices requiring stable component supply and long-term parametric consistency.
Supply support for LM4050BIX3-5.0-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 communications applications.
The LM4050/LM4051 family targets space-constrained, micropower systems needing stable voltage references without external compensation-optimized for portable, battery-operated, and high-reliability embedded measurement.
FAQ
What is the maximum junction temperature rating for LM4050BIX3-5.0-T?
The LM4050BIX3-5.0-T has a maximum junction temperature of +150°C. Its specified operating temperature range is –40°C to +125°C ambient. At 15mA shunt current and 5.000V output, it dissipates 75mW; combined with SC70 thermal resistance, ambient must be limited to avoid exceeding +150°C junction temperature-especially above +100°C ambient.
Does LM4050BIX3-5.0-T require an external output capacitor for stability?
No, LM4050BIX3-5.0-T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC reference inputs or op-amp bias networks. This eliminates capacitor-related BOM cost, layout complexity, and aging effects.
What is the minimum operating current for LM4050BIX3-5.0-T at 5.000V output?
The minimum operating (shunt) current for LM4050BIX3-5.0-T is 80µA at full temperature range (–40°C to +125°C), per the 5.000V electrical characteristics table. At +25°C, it starts regulating reliably at 60µA, but 80µA ensures guaranteed operation across all conditions.
How does the pin configuration of LM4050BIX3-5.0-T differ from standard zener diodes?
LM4050BIX3-5.0-T uses a 3-pin SC70 package: Pin 1 (+) is the anode/reference output, Pin 2 (−) is the cathode/ground return, and Pin 3 is N.C. (no internal connection). Unlike discrete zeners, Pin 3 must be left floating or tied to Pin 2-never driven or loaded-to prevent malfunction or damage.
Can LM4050BIX3-5.0-T be used in forward conduction mode?
Yes, LM4050BIX3-5.0-T clamps to approximately one diode drop below ground (≈ –0.7V) when forward biased up to 10mA. However, this mode is not intended for precision use; the device is characterized and guaranteed only in reverse breakdown (shunt reference) operation at 5.000V.
LM4050BIX3-5.0-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
LM4050BIX3-5.0-T FAQ
1.How can I place an order for LM4050BIX3-5.0-T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIX3-5.0-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 LM4050BIX3-5.0-T reliable?
The price and inventory of LM4050BIX3-5.0-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIX3-5.0-T is usually 5 days.
3.What payment methods are accepted for LM4050BIX3-5.0-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIX3-5.0-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIX3-5.0-T?
LM4050BIX3-5.0-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIX3-5.0-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 LM4050BIX3-5.0-T?
For technical support, including LM4050BIX3-5.0-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIX3-5.0-T requirements.
6.How does Aetrix verify that LM4050BIX3-5.0-T is sourced from the original manufacturer or authorized distributors?
All LM4050BIX3-5.0-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 LM4050BIX3-5.0-T meets industry standards.
7.What is the process for return or replacement of LM4050BIX3-5.0-T?
All LM4050BIX3-5.0-T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIX3-5.0-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 LM4050BIX3-5.0-T part is unused and in its original packaging.
Return procedure for LM4050BIX3-5.0-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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