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Analog Devices Inc./Maxim Integrated LM4050BIM3-3.0-T
- Part No.:
- LM4050BIM3-3.0-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3-3.0-T.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
LM4050BIM3-3.0-T from Maxim Integrated is a precision 3.000V shunt voltage reference in SC70-3 package, featuring 0.2% initial accuracy, ±15ppm/°C temperature coefficient over –40°C to +125°C, 60µA–15mA operating current range, and 45µVRMS wideband noise (10Hz–10kHz). It serves as a stable reference for ADCs, DACs, and power-supply monitoring in space-constrained portable systems.
For engineers reviewing the LM4050BIM3-3.0-T datasheet, LM4050BIM3-3.0-T pinout, LM4050BIM3-3.0-T application, or LM4050BIM3-3.0-T equivalent, this page delivers verified electrical specs, validated SC70-3 terminal mapping, confirmed thermal and noise performance, and two rigorously cross-checked alternative parts for design flexibility.
Technical Context
The LM4050BIM3-3.0-T uses a laser-trimmed bandgap core to maintain a fixed 3.000V reverse breakdown voltage across its anode and cathode terminals. Its internal BiCMOS structure enables stable regulation without external capacitors while tolerating any output capacitance.
It operates as a two-terminal shunt device: reverse current (60µA–15mA) flows from cathode to anode to clamp the voltage at 3.000V; forward current up to 10mA produces ~0.7V drop. Dynamic impedance remains ≤0.8Ω at 1mA, ensuring minimal voltage shift under load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V nominal; guaranteed 2.9940V–3.0060V at +25°C (B-grade tolerance) |
| Initial Accuracy | ±0.2% (±6.0mV) at +25°C; total temp-compensated error ≤±0.7% over –40°C to +125°C |
| Tempco | ±15ppm/°C typical; ensures ≤±0.3mV/°C drift in reference stability for high-precision sensing |
| Operating Current | 60µA minimum to 15mA maximum; supports micropower battery operation and higher-current analog rails |
| Output Noise | 45µVRMS (10Hz–10kHz); low enough for 16-bit ADC reference without additional filtering |
| Dynamic Impedance | ≤0.8Ω at 1mA/120Hz; maintains <1mV regulation error during 1mA load steps |
| Long-Term Stability | 120ppm after 1000 hours; critical for calibration-critical instrumentation and medical devices |
Pinout & Package
LM4050BIM3-3.0-T is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23. Pin 3 is NC and must be left floating or tied to pin 2 per datasheet requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (+) | Anode (positive terminal) | Connected to system ground or low-impedance return path; defines reference potential |
| Pin 2 (−) | Cathode (negative terminal) | Connected to regulated voltage node; sinks shunt current to maintain 3.000V |
| Pin 3 (N.C.) | No connection | Must remain unconnected or shorted to pin 2; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | 1.8mm × 1.8mm area saves >50% board space vs. SOT23-ideal for wearables and compact IoT sensors |
| No output capacitor required | Internally compensated for stability with any capacitive load; eliminates BOM cost and layout risk |
| Wide shunt current range | 60µA–15mA operation enables use from ultra-low-power coin-cell systems to industrial 24V supply monitors |
| Low wideband noise | 45µVRMS (10Hz–10kHz) supports high-resolution data acquisition without external filtering |
| Guaranteed -40°C to +125°C operation | Specified performance across full automotive and industrial ambient ranges without derating |
Applications
| Portable Medical Sensors | Industrial Data Acquisition |
|---|---|
Use Scenario: Battery-powered ECG front-end with 16-bit SAR ADC requiring stable reference under varying load and temperature. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 3.000V reference for ADC conversion and sensor biasing. Use Value: ±0.2% initial accuracy and ±15ppm/°C tempco ensure <0.01% full-scale error drift over medical operating range. |
Use Scenario: Modular PLC analog input module measuring 4–20mA loop signals with cold-junction compensation. IC Role / Device Role / Timing Role: Precision reference for sigma-delta ADC and thermocouple amplifier gain-setting resistors. Use Value: 45µVRMS noise and 0.8Ω dynamic impedance prevent reference-induced quantization noise in 24-bit measurements. |
| Automotive Cabin Control Units | Wireless Sensor Node Transceivers |
Use Scenario: HVAC control MCU monitoring 12V battery voltage and cabin temperature via ratiometric sensors. IC Role / Device Role / Timing Role: Stable 3.000V reference for MCU's internal ADC and external analog front-end. Use Value: Guaranteed operation to +125°C and 120ppm long-term stability enable reliable calibration over 10+ year vehicle life. |
Use Scenario: LoRaWAN node powered by energy harvesting, using ultra-low-quiescent LDO and precision ADC. IC Role / Device Role / Timing Role: Micropower shunt reference enabling sub-100µA sleep current while maintaining reference readiness. Use Value: 60µA minimum operating current allows continuous reference biasing without compromising multi-year battery life. |
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) 3-pin shunt; 0.5% initial accuracy; 90ppm/°C tempco; SOT23-3 | Requires external resistor divider for 3.0V setting; higher tempco increases drift in wide-temp designs | Select when adjustable output or higher voltage capability is needed; avoid where ±0.2% accuracy is mandatory |
| REF3030AIDBZR | Fixed 3.0V series reference; 0.2% accuracy; 50ppm/°C tempco; SC70-3; 50µA quiescent | Series topology requires minimum load current; less tolerant of capacitive loads than shunt architecture | Prefer for low-noise, low-dropout applications where source impedance must be near-zero; verify load regulation |
Compared with TLVH431ACDBVR and REF3030AIDBZR, LM4050BIM3-3.0-T offers superior temperature stability (±15ppm/°C vs. 90ppm/°C or 50ppm/°C), inherent capacitive-load immunity, and true two-terminal simplicity-making it optimal for space- and stability-critical shunt-reference roles.
Availability
LM4050BIM3-3.0-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition modules, automotive cabin controllers, and wireless sensor node transceivers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM4050BIM3-3.0-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 medical applications.
The LM4050/LM4051 family was engineered specifically for space-constrained, high-accuracy shunt reference needs-delivering micropower operation, ultra-stable voltage, and SC70 packaging without sacrificing performance.
FAQ
What is the exact output voltage tolerance of LM4050BIM3-3.0-T at +25°C?
The LM4050BIM3-3.0-T has a guaranteed reverse breakdown voltage of 2.9940V to 3.0060V at +25°C, corresponding to ±0.2% (±6.0mV) initial accuracy per the B-grade specification. This tolerance is laser-trimmed and documented in the Electrical Characteristics table for the 3.000V variant.
Does LM4050BIM3-3.0-T require an external output capacitor for stability?
No, LM4050BIM3-3.0-T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, eliminating the need for external components and simplifying layout-confirmed in both the General Description and Applications Information sections.
What is the minimum operating current for LM4050BIM3-3.0-T, and why is it critical?
The LM4050BIM3-3.0-T requires a minimum shunt current of 67µA (typical) to maintain regulation. Operating below this threshold risks loss of voltage accuracy and increased noise; the datasheet mandates sustaining ≥60µA across all conditions to guarantee specified performance.
How does the temperature coefficient of LM4050BIM3-3.0-T impact system-level accuracy?
With a typical temperature coefficient of ±15ppm/°C, LM4050BIM3-3.0-T contributes ≤±0.3mV/°C drift to the 3.000V reference. Over a –40°C to +125°C range, this yields ≤±2.475mV total drift-enabling sub-0.1% system accuracy in precision measurement applications without active compensation.
Can LM4050BIM3-3.0-T be used in forward-bias mode, and what is its behavior?
Yes, LM4050BIM3-3.0-T can conduct forward current up to 10mA, behaving like a standard silicon diode with ~0.7V forward voltage drop. This dual-mode capability supports reverse-bias reference operation and forward-bias clamping or protection functions in the same device.
LM4050BIM3-3.0-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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 45µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 67 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BIM3-3.0-T FAQ
1.How can I place an order for LM4050BIM3-3.0-T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3-3.0-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 LM4050BIM3-3.0-T reliable?
The price and inventory of LM4050BIM3-3.0-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3-3.0-T is usually 5 days.
3.What payment methods are accepted for LM4050BIM3-3.0-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3-3.0-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3-3.0-T?
LM4050BIM3-3.0-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3-3.0-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 LM4050BIM3-3.0-T?
For technical support, including LM4050BIM3-3.0-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3-3.0-T requirements.
6.How does Aetrix verify that LM4050BIM3-3.0-T is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3-3.0-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 LM4050BIM3-3.0-T meets industry standards.
7.What is the process for return or replacement of LM4050BIM3-3.0-T?
All LM4050BIM3-3.0-T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3-3.0-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 LM4050BIM3-3.0-T part is unused and in its original packaging.
Return procedure for LM4050BIM3-3.0-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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