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Analog Devices Inc./Maxim Integrated LM4050CEM3-5.0+T
- Part No.:
- LM4050CEM3-5.0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3-5.0+T.pdf
- Description:
- IC VREF SHUNT 5V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
LM4050CEM3-5.0+T from Analog Devices is a precision 5.000V, ±0.5% initial accuracy, 50ppm/°C max temperature coefficient shunt voltage reference in SC70-3 package. It operates from 60µA to 15mA shunt current, delivers 80µVRMS wideband noise (10Hz–10kHz), and is rated for -40°C to +125°C. It serves as a stable reference in high-accuracy ADC/DAC biasing and battery-powered sensor signal chains.
For engineers reviewing the LM4050CEM3-5.0+T datasheet, LM4050CEM3-5.0+T pinout, LM4050CEM3-5.0+T application, or LM4050CEM3-5.0+T equivalent, key selection criteria include guaranteed 5.000V reverse breakdown tolerance (±25mV at +25°C), no-output-capacitor stability, ultra-small 1.8mm × 1.8mm footprint, and AEC-Q100 qualification for automotive use cases.
Technical Context
The LM4050CEM3-5.0+T implements a laser-trimmed bandgap core with two-terminal shunt topology, functioning as a precision zener-like element requiring only external series resistance for regulation. Its dynamic impedance is ≤1.1Ω at 1mA, enabling stable output under varying load currents from 60µA to 15mA.
It guarantees ±0.5% initial accuracy and ≤50ppm/°C tempco over -40°C to +125°C, with long-term stability of 120ppm after 1000 hours. The device tolerates any capacitive load and requires no external stabilization capacitor - a key differentiator from older shunt references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal reverse breakdown voltage, ±25mV tolerance at +25°C (Grade C) |
| Initial Accuracy | ±0.5% (±25mV) at +25°C - enables direct use in 12-bit systems without calibration |
| Tempco | ≤50ppm/°C over -40°C to +125°C - ensures <±6mV drift across full industrial range |
| Shunt Current Range | 60µA to 15mA - supports micropower sensing and higher-current DAC reference buffering |
| Wideband Noise | 80µVRMS (10Hz–10kHz) - suitable for 16-bit SAR ADC reference without added filtering |
| Dynamic Impedance | ≤1.1Ω at 1mA - minimizes output voltage shift under load transients |
| Long-Term Stability | 120ppm after 1000h - predictable aging behavior for mission-critical instrumentation |
Pinout & Package
LM4050CEM3-5.0+T uses the 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23. Pin 3 is NC (no connection) and must be left unconnected or tied to Pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (+) | Positive terminal (anode) | Connected to system ground or low-impedance return path; defines reference potential |
| Pin 2 (–) | Negative terminal (cathode) | Connected to regulated output node; sinks shunt current to maintain 5.000V |
| Pin 3 (N.C.) | No connection | Must remain floating or shorted to Pin 2; not internally bonded - avoids parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint - saves >50% board area vs. SOT23, ideal for space-constrained wearables and modules |
| No output capacitor required | Internally compensated for stability with any capacitive load - eliminates BOM cost and layout sensitivity |
| AEC-Q100 qualified | Qualified for automotive applications per /V versions - supports infotainment, ADAS sensor power rails |
| Low 80µVRMS noise | Enables high-resolution data acquisition without external filtering - reduces design complexity and component count |
| 60µA minimum operating current | Supports ultra-low-power operation in battery-backed RTCs and wake-up circuits |
Applications
| Portable Medical Sensors | Automotive Cabin Sensors |
|---|---|
Use Scenario: Reference for 16-bit analog front-end in handheld ECG monitor powered by coin cell. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.000V bias to instrumentation amplifier and ADC driver. Use Value: ±0.5% initial accuracy and 50ppm/°C tempco ensure <±1 LSB error over temperature, extending usable battery life via 60µA min current. | Use Scenario: Reference for pressure and humidity sensors in automotive HVAC control module. IC Role / Device Role / Timing Role: Precision 5.000V shunt reference supplying excitation and ADC reference for ratiometric sensor readout. Use Value: AEC-Q100 qualification and -40°C to +125°C operation guarantee reliability in under-hood environments without derating. |
| Industrial Data Loggers | Smart Energy Meters |
Use Scenario: Reference for isolated sigma-delta ADC measuring grid voltage/current in DIN-rail mounted logger. IC Role / Device Role / Timing Role: Stable 5.000V shunt reference enabling accurate 24-bit measurement across wide temperature swings. Use Value: 120ppm long-term stability and low 80µVRMS noise reduce calibration frequency and improve metrology-grade accuracy. | Use Scenario: Reference for polyphase energy meter SoC performing real-time RMS and harmonic analysis. IC Role / Device Role / Timing Role: Primary 5.000V reference for ADC and internal LDOs in multi-channel metering IC. Use Value: No-output-capacitor operation simplifies layout near noisy switching supplies; SC70 size fits dense meter PCBs. |
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-terminal shunt; 0.5% initial accuracy; 90ppm/°C tempco; SOT23-3 | Requires external resistors for 5V setting; higher tempco limits high-temp accuracy | Choose when adjustable output or higher voltage capability is needed; not drop-in for fixed 5V |
| MAX6008AEUR+T | Fixed 5.000V shunt; 0.2% initial accuracy; 50ppm/°C tempco; SC70-3; 65µA–10mA range | Tighter initial accuracy but narrower current range; lower noise (50µVRMS) | Prefer for higher-precision applications where 0.2% accuracy justifies cost premium; same footprint |
Compared with TLVH431ACDBVR, LM4050CEM3-5.0+T offers true fixed 5.000V operation and superior thermal stability; compared with MAX6008AEUR+T, it trades 0.2% accuracy for wider 60µA–15mA operating range and broader automotive qualification scope.
Availability
LM4050CEM3-5.0+T is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin sensors, industrial data loggers, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4050CEM3-5.0+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LM4050/LM4051 family was designed specifically for space-constrained, high-accuracy voltage reference needs in battery-powered and automotive systems - emphasizing micropower operation, ultra-small packaging, and guaranteed tempco performance.
FAQ
What is the guaranteed reverse breakdown voltage tolerance for LM4050CEM3-5.0+T at +25°C?
The LM4050CEM3-5.0+T has a guaranteed reverse breakdown voltage of 5.000V ±25mV (±0.5%) at +25°C, as specified in the Grade C electrical characteristics table. This tolerance expands to ±50mV over the full -40°C to +125°C temperature range due to its 50ppm/°C max tempco.
Does LM4050CEM3-5.0+T require an external output capacitor for stability?
No, LM4050CEM3-5.0+T does not require an external output capacitor. Its internal compensation ensures stability with any capacitive load, including zero capacitance. This eliminates layout sensitivity and reduces BOM count - a key advantage over many legacy shunt references.
What is the minimum shunt current required for proper regulation of LM4050CEM3-5.0+T?
The LM4050CEM3-5.0+T requires a minimum shunt current of 60µA to maintain regulation across its full temperature range (-40°C to +125°C). Below this threshold, output voltage accuracy degrades significantly; design must ensure ISHUNT ≥ 60µA under worst-case conditions.
Is LM4050CEM3-5.0+T qualified for automotive applications?
LM4050CEM3-5.0+T itself is not explicitly AEC-Q100 qualified per the datasheet; however, the /V suffix variants (e.g., LM4050CEM3-5.0/V+T) are AEC-Q100 qualified. For automotive use, select the /V version - LM4050CEM3-5.0+T remains suitable for industrial and commercial applications with identical electrical specs.
What package type and dimensions does LM4050CEM3-5.0+T use?
LM4050CEM3-5.0+T uses the SC70-3 surface-mount package with outline number 21-0075, measuring 1.8mm × 1.8mm × 0.9mm. Its land pattern (90-0208) supports reflow soldering, and thermal resistance is θJA = 340.4°C/W on a four-layer board.
LM4050CEM3-5.0+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- 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:
- SOT-23-3
LM4050CEM3-5.0+T FAQ
1.How can I place an order for LM4050CEM3-5.0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3-5.0+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 LM4050CEM3-5.0+T reliable?
The price and inventory of LM4050CEM3-5.0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CEM3-5.0+T is usually 5 days.
3.What payment methods are accepted for LM4050CEM3-5.0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3-5.0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3-5.0+T?
LM4050CEM3-5.0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3-5.0+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 LM4050CEM3-5.0+T?
For technical support, including LM4050CEM3-5.0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3-5.0+T requirements.
6.How does Aetrix verify that LM4050CEM3-5.0+T is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3-5.0+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 LM4050CEM3-5.0+T meets industry standards.
7.What is the process for return or replacement of LM4050CEM3-5.0+T?
All LM4050CEM3-5.0+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3-5.0+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 LM4050CEM3-5.0+T part is unused and in its original packaging.
Return procedure for LM4050CEM3-5.0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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