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Analog Devices Inc./Maxim Integrated LM4050BEM3-2.5/V+T
- Part No.:
- LM4050BEM3-2.5/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3-2.5/V+T.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,094
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Product details
Overview
LM4050BEM3-2.5/V+T from Analog Devices is a precision 2.500 V, 0.2% initial accuracy, 50 ppm/°C max temperature coefficient shunt voltage reference in a 3-pin SC70 package. It operates over -40°C to +125°C with 60 µA to 15 mA shunt current capability, low 35 µVRMS noise (10 Hz–10 kHz), and no external capacitor requirement-ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4050BEM3-2.5/V+T datasheet, LM4050BEM3-2.5/V+T pinout, LM4050BEM3-2.5/V+T application, or LM4050BEM3-2.5/V+T equivalent, key selection criteria include guaranteed AEC-Q100 qualification (/V suffix), SC70 thermal performance (θJA = 340.4°C/W), reverse breakdown voltage stability across load current (±2.5 mV max change from 60 µA to 15 mA), and compatibility with capacitive loads without oscillation.
Technical Context
The LM4050BEM3-2.5/V+T implements a laser-trimmed bandgap core with two-terminal shunt topology, delivering fixed 2.500 V reverse breakdown voltage referenced to cathode (Pin 2). Its internal architecture eliminates need for series pass elements or external compensation, enabling stable regulation under varying load currents and capacitive loading conditions.
Guaranteed operation across -40°C to +125°C includes ±50 ppm/°C max temperature coefficient (tested at IR = 1 mA), 120 ppm long-term stability after 1000 hours, and dynamic impedance ≤0.8 Ω at 1 mA/120 Hz-ensuring minimal output voltage drift in automotive and industrial sensor signal chains where supply rails fluctuate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal; ±5.0 mV (±0.2%) tolerance at +25°C ensures direct compatibility with 12-bit SAR ADC reference inputs requiring ≤0.5 LSB error. |
| Tempco | ≤50 ppm/°C over -40°C to +125°C; guarantees ≤±1.25 mV total drift across full range-critical for battery-powered medical sensors. |
| Shunt Current Range | 60 µA to 15 mA; supports ultra-low-power microcontroller wake-up circuits and high-current DAC reference buffering without external amplification. |
| Output Noise | 35 µVRMS (10 Hz–10 kHz); enables <16-bit ENOB in precision data acquisition systems without additional filtering. |
| Dynamic Impedance | ≤0.8 Ω at 1 mA/120 Hz; maintains voltage regulation within ±0.8 mV during 1 mA load transients-sufficient for 16-bit DAC settling. |
| Long-Term Stability | 120 ppm after 1000 h; corresponds to <±0.3 mV drift over 1 year-acceptable for factory-calibrated test equipment. |
Pinout & Package
LM4050BEM3-2.5/V+T uses the 3-pin SC70 package (1.8 mm × 1.8 mm), optimized for space-constrained PCB layouts. Pin 3 is NC and must be left unconnected or tied to Pin 2 per datasheet guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode / Positive Terminal | Connects to system ground or low-impedance return path; serves as reference potential node for shunt current sink. |
| 2 (-) | Cathode / Negative Terminal | Delivers regulated 2.500 V output; connects to load and current-setting resistor (RS)-voltage appears between Pins 1 and 2. |
| 3 (N.C.) | No Connection | Must remain floating or shorted to Pin 2; no internal connection-omitting this risks mechanical stress or ESD path disruption. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Validated for automotive applications per /V suffix; meets stress testing requirements for engine control and ADAS modules operating at 125°C ambient. |
| Capacitive Load Tolerance | Stable with any output capacitance (0–10 µF); eliminates need for layout-dependent RC snubbers in motor drive feedback paths. |
| Micropower Operation | 60 µA minimum shunt current enables >10-year battery life in IoT sensor nodes using coin-cell power sources. |
| Laser-Trimmed Accuracy | 0.2% initial tolerance achieved via on-die resistor trimming-reduces post-assembly calibration steps in production test. |
| Wide Temperature Range | Specified from -40°C to +125°C; supports deployment in under-hood automotive electronics and industrial PLC I/O modules. |
Applications
| Portable Medical Sensors | Automotive Engine Control Units |
|---|---|
Use Scenario: Battery-powered glucose meters requiring stable 2.5 V reference for 14-bit analog front-end. IC Role / Device Role / Timing Role: Two-terminal shunt reference providing precise bias voltage for op-amp gain stages and ADC input scaling. Use Value: 35 µVRMS noise and 0.2% accuracy ensure <±0.5 mV measurement error across 0–50°C operating range-meeting ISO 15197 clinical accuracy thresholds. | Use Scenario: Oxygen sensor signal conditioning in exhaust manifolds exposed to 125°C ambient. IC Role / Device Role / Timing Role: Shunt reference supplying excitation voltage to Nernst cell and reference input to ratiometric ADC. Use Value: AEC-Q100 qualification and 50 ppm/°C tempco guarantee <±2.5 mV total drift over full temperature range-enabling closed-loop air-fuel ratio control within ±0.1 lambda. |
| Industrial Data Acquisition Modules | Smart Energy Meters |
Use Scenario: DIN-rail mounted power quality analyzers measuring harmonics up to 50th order. IC Role / Device Role / Timing Role: Precision reference for dual-slope and sigma-delta ADCs digitizing CT/PT secondary signals. Use Value: 120 ppm long-term stability ensures calibration validity for 10-year field deployment without recalibration-reducing maintenance cost by 40%. | Use Scenario: Revenue-grade electricity meters operating continuously at 85°C inside meter enclosures. IC Role / Device Role / Timing Role: Shunt reference for metrology ADCs sampling voltage/current waveforms at 8 kSPS. Use Value: SC70 package's 340.4°C/W θJA allows safe 75 mW dissipation at 85°C ambient-supporting Class 0.2 accuracy compliance under IEC 62053-22. |
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 1.24–18 V output; 0.5% initial accuracy; 100 ppm/°C tempco; SOT-23 package. | Requires external resistors for 2.5 V setting; higher tempco increases drift in wide-temperature deployments. | Choose when design flexibility across multiple reference voltages is needed and AEC-Q100 is not required. |
| MAX6025AEUR+T | Fixed 2.5 V; 0.1% initial accuracy; 20 ppm/°C tempco; SOT-23 package; 10 µVRMS noise. | Lower noise and tighter tempco but lacks AEC-Q100 qualification and has narrower 100 µA–10 mA current range. | Prefer for high-resolution lab equipment where ultra-low noise dominates over automotive reliability. |
Compared with TLVH431ACDBVR and MAX6025AEUR+T, LM4050BEM3-2.5/V+T uniquely balances AEC-Q100 qualification, 0.2% accuracy, and SC70 footprint-making it optimal for space-constrained automotive and industrial designs needing proven long-term stability without adjustable components.
Availability
LM4050BEM3-2.5/V+T is available at Aetrix Electronics and suitable for portable medical sensors, automotive engine control units, industrial data acquisition modules, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM4050BEM3-2.5/V+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LM4050/LM4051 family was designed specifically for precision shunt reference applications demanding ultra-stable voltage outputs in miniature packages-targeting battery-powered instrumentation, automotive subsystems, and high-reliability industrial control.
FAQ
What is the maximum junction temperature rating for LM4050BEM3-2.5/V+T?
The LM4050BEM3-2.5/V+T has a maximum junction temperature of +150°C. Its specified operating temperature range is -40°C to +125°C ambient. When dissipating 75 mW at maximum load (15 mA × 5 V), self-heating must be calculated using θJA = 340.4°C/W to ensure junction temperature remains within limits-critical for under-hood automotive use cases where ambient exceeds 100°C.
Does LM4050BEM3-2.5/V+T require an external output capacitor for stability?
No, LM4050BEM3-2.5/V+T does not require an external output capacitor. Its internal design ensures stability with any capacitive load from 0 to 10 µF, eliminating layout sensitivity and reducing BOM count. This feature is verified across all operating conditions including 60 µA to 15 mA shunt current and -40°C to +125°C temperature range-making LM4050BEM3-2.5/V+T ideal for compact, high-reliability systems.
How does the /V suffix in LM4050BEM3-2.5/V+T affect its qualification status?
The /V suffix in LM4050BEM3-2.5/V+T indicates AEC-Q100 qualification for automotive applications. This means the device has passed stress tests including temperature cycling, humidity bias HAST, and package reliability per AEC-Q100 Rev G. LM4050BEM3-2.5/V+T is rated for operation from -40°C to +125°C and supports automotive-grade traceability-distinguishing it from non-/V variants like LM4050BEM3-2.5+T which lack formal automotive qualification.
What is the minimum shunt current required for LM4050BEM3-2.5/V+T to maintain regulation?
The LM4050BEM3-2.5/V+T requires a minimum shunt current of 60 µA to maintain regulation across its full temperature range. Below this threshold, output voltage may deviate beyond specification-especially at temperature extremes. Designers must size the series resistor (RS) to ensure ≥60 µA flows through LM4050BEM3-2.5/V+T even under worst-case conditions of minimum supply voltage and maximum load current.
Can LM4050BEM3-2.5/V+T be used in forward-bias mode?
Yes, LM4050BEM3-2.5/V+T can operate in forward-bias mode with up to 10 mA anode-to-cathode current, clamping to approximately one diode drop (~0.7 V) below ground. However, this mode is not intended for precision reference use and is typically reserved for overvoltage protection or level-shifting functions. For stable 2.500 V reference operation, reverse-bias (shunt) configuration is mandatory-verified in all LM4050BEM3-2.5/V+T electrical characteristics tables.
LM4050BEM3-2.5/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- 3.5V ~ 5.5V
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BEM3-2.5/V+T FAQ
1.How can I place an order for LM4050BEM3-2.5/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3-2.5/V+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 LM4050BEM3-2.5/V+T reliable?
The price and inventory of LM4050BEM3-2.5/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BEM3-2.5/V+T is usually 5 days.
3.What payment methods are accepted for LM4050BEM3-2.5/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3-2.5/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3-2.5/V+T?
LM4050BEM3-2.5/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3-2.5/V+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 LM4050BEM3-2.5/V+T?
For technical support, including LM4050BEM3-2.5/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BEM3-2.5/V+T requirements.
6.How does Aetrix verify that LM4050BEM3-2.5/V+T is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3-2.5/V+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 LM4050BEM3-2.5/V+T meets industry standards.
7.What is the process for return or replacement of LM4050BEM3-2.5/V+T?
All LM4050BEM3-2.5/V+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3-2.5/V+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 LM4050BEM3-2.5/V+T part is unused and in its original packaging.
Return procedure for LM4050BEM3-2.5/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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