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Analog Devices Inc./Maxim Integrated LM4050CIM3-5.0-T
- Part No.:
- LM4050CIM3-5.0-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CIM3-5.0-T.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:17,000
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Product details
Overview
LM4050CIM3-5.0-T from Maxim Integrated is a precision 5.000V shunt voltage reference in SC70-3 package, featuring ±25mV initial accuracy (0.5%), ±15ppm/°C temperature coefficient over −40°C to +125°C, 60µA–15mA operating current range, and 80µVRMS wideband noise (10Hz–10kHz). It serves as a stable voltage reference in portable battery-powered systems requiring micropower operation and space-constrained PCB layouts.
For engineers reviewing the LM4050CIM3-5.0-T datasheet, LM4050CIM3-5.0-T pinout, LM4050CIM3-5.0-T application, or LM4050CIM3-5.0-T equivalent, key selection criteria include guaranteed reverse breakdown voltage tolerance over full temperature range, no-output-capacitor stability, low dynamic impedance (≤1.1Ω), and compatibility with capacitive loads in high-precision ADC/DAC biasing and sensor excitation circuits.
Technical Context
The LM4050CIM3-5.0-T implements a laser-trimmed bandgap core with BiCMOS process technology to deliver stable 5.000V reverse breakdown voltage without external stabilization components. Its two-terminal shunt architecture sinks current through an internal pass transistor to maintain regulation across varying load and supply conditions.
It operates over a wide shunt current range (60µA to 15mA) while maintaining ≤12mV reverse voltage change across 1mA–15mA, and exhibits low output impedance (<1.1Ω at 120Hz) and inherent stability with any capacitive load - eliminating need for output capacitors in precision analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal reverse breakdown voltage, guaranteed 4.975V–5.025V at +25°C (C-grade) |
| Initial Accuracy | ±25mV (±0.5%) at +25°C - sets absolute DC error floor for calibration-critical systems |
| Tempco | ±15ppm/°C max over −40°C to +125°C - contributes ≤±7.5mV drift across full range |
| Operating Current | 60µA minimum to 15mA maximum - enables ultra-low-power sensor nodes and high-current reference buffering |
| Dynamic Impedance | ≤1.1Ω at 1mA/120Hz - ensures minimal load-induced voltage perturbation in dynamic systems |
| Wideband Noise | 80µVRMS (10Hz–10kHz) - suitable for 16-bit ADC references where noise <100µVRMS is required |
| Long-Term Stability | 120ppm after 1000h - supports designs requiring <0.012% drift over 1-year operational life |
Pinout & Package
LM4050CIM3-5.0-T is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23-3. Pin 3 is NC (no connection) and must be left floating or tied to Pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (+) | Anode / Positive Terminal | Connected to system ground or low-impedance return path; forms cathode-to-anode reverse bias path |
| Pin 2 (−) | Cathode / Negative Terminal | Reference output node; voltage is regulated relative to this terminal; connects to VREF input of ADC/DAC |
| Pin 3 (N.C.) | No Connection | Must remain unconnected or shorted to Pin 2; not internally bonded - floating improves thermal isolation |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable under all capacitive loads - eliminates BOM cost, board area, and ESR-related instability risks |
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint - enables placement adjacent to high-resolution ADCs in wearables and IoT edge sensors |
| Guaranteed tempco over full range | ±15ppm/°C from −40°C to +125°C - enables single-point calibration in industrial control modules |
| Micropower operation | 60µA minimum operating current - supports >10-year battery life in coin-cell-powered remote sensors |
| Tolerates capacitive loads | Stable with 0–1µF output capacitance - simplifies filtering for noise-sensitive SAR ADC reference inputs |
Applications
| Portable Medical Sensors | Industrial Data Acquisition |
|---|---|
Use Scenario: Battery-powered handheld blood glucose meter with 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Provides precise 5.000V reference for ADC full-scale calibration and sensor bridge excitation. Use Value: ±25mV initial accuracy and ±15ppm/°C tempco ensure <0.1% total unadjusted error across clinical operating temperatures (15°C–40°C). | Use Scenario: DIN-rail-mounted PLC analog input module measuring 4–20mA loop signals. IC Role / Device Role / Timing Role: Supplies stable 5.000V reference to 24-bit delta-sigma ADC and isolated DAC feedback path. Use Value: 80µVRMS noise and <1.1Ω dynamic impedance prevent quantization noise degradation and enable <100dB SNR performance. |
| Automotive Cabin Sensors | Wireless Sensor Node Transceivers |
Use Scenario: Occupant detection system using MEMS pressure sensors in automotive seat cushions. IC Role / Device Role / Timing Role: Bias reference for ratiometric pressure transducer and ADC front-end in AEC-Q200-compliant design. Use Value: −40°C to +125°C guaranteed operation and 120ppm long-term stability meet automotive reliability requirements without recalibration. | Use Scenario: LoRaWAN soil moisture node powered by CR2032 battery with 12-bit SAR ADC. IC Role / Device Role / Timing Role: Low-current 5.000V reference enabling <10µA sleep-mode current while maintaining ADC accuracy. Use Value: 60µA minimum operating current allows continuous reference bias during deep-sleep cycles, reducing wake-up latency and improving measurement repeatability. |
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 1.24V–18V output; 2% initial accuracy; 100ppm/°C tempco; SOT23-3 | Requires external resistor divider; higher tempco increases drift in wide-temperature deployments | Select when adjustable output or higher voltage capability (>5V) is needed; not drop-in for fixed 5.000V use |
| ADR3450ARJZ-R7 | 5.000V fixed output; 0.1% initial accuracy; 10ppm/°C tempco; SOT23-5 (with enable) | 5-pin package adds enable control but requires PCB redesign; lower noise (5.5µVRMS) and tighter spec | Choose for metrology-grade systems needing <0.1% accuracy and sub-10ppm/°C stability; not pin-compatible |
Compared with TLVH431ACDBVR and ADR3450ARJZ-R7, the LM4050CIM3-5.0-T offers optimal balance of fixed 5.000V precision, SC70-3 space efficiency, and zero-capacitor stability - making it preferred for cost- and size-constrained industrial and portable designs where 0.5% accuracy suffices.
Availability
LM4050CIM3-5.0-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition modules, automotive cabin sensors, and wireless sensor node transceivers requiring stable component supply and long-lifecycle support.
Supply support for LM4050CIM3-5.0-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 industrial, automotive, and communications applications, with emphasis on power efficiency, integration, and reliability.
The LM4050/LM4051 product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and high-temperature systems requiring stable, capacitor-free voltage references across multiple fixed output voltages.
FAQ
What is the guaranteed output voltage tolerance of LM4050CIM3-5.0-T over its full operating temperature range?
The LM4050CIM3-5.0-T guarantees a total output voltage tolerance of ±1.0% over −40°C to +125°C, derived from its ±0.5% initial accuracy plus ±50ppm/°C tempco applied across ±100°C deviation from +25°C. This yields ±50mV worst-case deviation from 5.000V, confirmed in the datasheet's Grade C specifications and Note 2 calculations.
Does LM4050CIM3-5.0-T require an external output capacitor for stability?
No, the LM4050CIM3-5.0-T does not require an external output capacitor. Its internal architecture ensures stability with any capacitive load from 0 to ≥1µF, as verified in Typical Operating Characteristics (Figure 14–15) and explicitly stated in the Features and Applications Information sections. This eliminates layout sensitivity and reduces BOM count.
What is the minimum operating current for LM4050CIM3-5.0-T, and why is it critical?
The LM4050CIM3-5.0-T requires a minimum shunt current of 60µA to maintain regulation, per Electrical Characteristics table (IRMIN = 60µA for 5.000V grade). Falling below this causes loss of voltage accuracy and increased tempco sensitivity - critical in ultra-low-power sleep modes where current budgeting must preserve ≥60µA through the reference path.
How does the SC70-3 package of LM4050CIM3-5.0-T compare in size to SOT23-3 alternatives?
The LM4050CIM3-5.0-T in SC70-3 measures 1.8mm × 1.8mm, which is 50% smaller than the standard SOT23-3 package (2.9mm × 1.6mm). This reduction enables denser routing near high-resolution ADCs and fits within tight keep-out zones in wearable and portable PCBs, as highlighted in the General Description and Package Information sections.
Can LM4050CIM3-5.0-T be used in automotive applications requiring AEC-Q200 compliance?
While the LM4050CIM3-5.0-T is specified from −40°C to +125°C and meets key electrical requirements for automotive cabin sensors, it is not officially AEC-Q200 qualified. For AEC-Q200-compliant designs, users must perform full qualification testing per their internal standards - the device's guaranteed temp range and long-term stability (120ppm/1000h) support such validation efforts.
LM4050CIM3-5.0-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Bulk
- 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:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050CIM3-5.0-T FAQ
1.How can I place an order for LM4050CIM3-5.0-T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CIM3-5.0-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 LM4050CIM3-5.0-T reliable?
The price and inventory of LM4050CIM3-5.0-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CIM3-5.0-T is usually 5 days.
3.What payment methods are accepted for LM4050CIM3-5.0-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CIM3-5.0-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CIM3-5.0-T?
LM4050CIM3-5.0-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CIM3-5.0-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 LM4050CIM3-5.0-T?
For technical support, including LM4050CIM3-5.0-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CIM3-5.0-T requirements.
6.How does Aetrix verify that LM4050CIM3-5.0-T is sourced from the original manufacturer or authorized distributors?
All LM4050CIM3-5.0-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 LM4050CIM3-5.0-T meets industry standards.
7.What is the process for return or replacement of LM4050CIM3-5.0-T?
All LM4050CIM3-5.0-T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CIM3-5.0-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 LM4050CIM3-5.0-T part is unused and in its original packaging.
Return procedure for LM4050CIM3-5.0-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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