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Analog Devices Inc./Maxim Integrated LM4050BIM3-5.0
- Part No.:
- LM4050BIM3-5.0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3-5.0.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:47,000
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Product details
Overview
LM4050BIM3-5.0 from Maxim Integrated is a precision 5.000V 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 80µVRMS wideband noise (10Hz–10kHz). It serves as a stable voltage reference in battery-powered ADCs, portable instrumentation, and industrial sensor signal conditioning circuits.
For engineers reviewing the LM4050BIM3-5.0 datasheet, LM4050BIM3-5.0 pinout, LM4050BIM3-5.0 application, or LM4050BIM3-5.0 equivalent, key selection criteria include guaranteed reverse breakdown voltage tolerance (±10mV at +25°C), no-output-capacitor stability, low dynamic impedance (≤1.1Ω), and compatibility with capacitive loads across full temperature range.
Technical Context
The LM4050BIM3-5.0 uses a laser-trimmed bandgap architecture to deliver precise 5.000V reverse breakdown voltage without requiring external stabilization components. Its internal pass transistor sinks shunt current to maintain regulation across 60µA–15mA, enabling operation from high-voltage supplies via series resistor biasing.
It exhibits guaranteed thermal stability (±15ppm/°C) and low output impedance (<1.1Ω at 120Hz), ensuring minimal voltage drift under varying load and temperature conditions. The device tolerates any output capacitance and remains stable without external capacitors - a critical advantage for space-constrained, low-noise analog designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±10mV at +25°C - ensures accurate 5V reference for 12-bit+ ADCs and DACs |
| Initial Accuracy | ±0.2% - corresponds to ±10mV tolerance at 5V, suitable for precision measurement front-ends |
| Tempco | ±15ppm/°C - contributes ≤±1.5mV drift over –40°C to +125°C, enabling robust industrial operation |
| Operating Current | 60µA to 15mA - supports micropower sleep modes and high-current regulation in same device |
| Dynamic Impedance | ≤1.1Ω at 120Hz - minimizes load-induced voltage sag during transient current steps |
| Output Noise | 80µVRMS (10Hz–10kHz) - low enough for 16-bit SAR ADC reference without additional filtering |
| Long-Term Stability | 120ppm over 1000h - predictable aging behavior for calibration-critical systems |
Pinout & Package
LM4050BIM3-5.0 is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23. 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; defines reference node polarity |
| Pin 2 (−) | Cathode / Negative Terminal | Connected to regulated output node; reverse-biased to develop 5.000V across terminals |
| Pin 3 (N.C.) | No Connection | Must remain unconnected or shorted to Pin 2 - floating Pin 3 avoids parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint - enables placement in dense portable PCB layouts (e.g., wearables, handheld meters) |
| No output capacitor required | Stable with any capacitive load - eliminates BOM cost and layout risk of external COUT |
| Wide shunt current range | 60µA–15mA operation - supports both ultra-low-power sensor nodes and higher-current analog subsystems |
| Low 80µVRMS noise | 10Hz–10kHz bandwidth - preserves SNR in precision data acquisition without post-regulation filtering |
| Laser-trimmed accuracy | 0.2% initial tolerance - reduces need for system-level calibration in production test |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered environmental monitoring unit measuring temperature, humidity, and pressure with 16-bit ADC. IC Role / Device Role / Timing Role: Provides stable 5.000V reference for ADC conversion and excitation of resistive sensors. Use Value: Enables <1 LSB error over full temperature range due to ±15ppm/°C tempco and low noise. | Use Scenario: 4–20mA loop-powered transmitter with HART modulation, operating in harsh factory environments. IC Role / Device Role / Timing Role: Supplies precision reference for current-loop DAC and sensor signal conditioning amplifier. Use Value: Guarantees long-term stability (120ppm/1000h) and operation up to +125°C without derating. |
| Medical Point-of-Care Devices | Automotive Cabin Sensors |
Use Scenario: Handheld blood glucose meter with electrochemical sensor interface and LCD display. IC Role / Device Role / Timing Role: References ADC for analog front-end and powers low-noise op-amp stages. Use Value: Delivers 80µVRMS noise floor compatible with sub-100nA sensor currents and battery-life optimization. | Use Scenario: Occupancy and air quality sensor module mounted near HVAC ducts in automotive cabins. IC Role / Device Role / Timing Role: Supplies calibrated reference for CO₂, VOC, and humidity sensing ICs. Use Value: Maintains ±0.2% accuracy across –40°C to +125°C ambient, meeting AEC-Q200 stress 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; 90ppm/°C tempco; SOT23-3 | Requires two external resistors for 5V setting; higher tempco increases drift in wide-temp applications | Choose when design flexibility or cost sensitivity outweighs need for tight 5V tolerance and low drift |
| ADR3450ARJZ-R7 | 5.000V fixed; 0.1% initial accuracy; 10ppm/°C tempco; SC70-5; higher quiescent current (100µA min) | SC70-5 footprint incompatible with LM4050BIM3-5.0 layout; requires PCB redesign | Choose for highest accuracy/stability where board space allows 5-pin variant and higher supply current is acceptable |
Compared with TLVH431ACDBVR and ADR3450ARJZ-R7, LM4050BIM3-5.0 offers optimal balance of fixed 5V precision, SC70-3 footprint compatibility, and micropower operation - making it ideal for drop-in replacement in space-constrained, battery-sensitive designs requiring guaranteed 0.2% tolerance and ±15ppm/°C performance.
Availability
LM4050BIM3-5.0 is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and medical point-of-care devices requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM4050BIM3-5.0 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, medical, and communications applications.
The LM4050 series targets high-accuracy, low-power shunt references for space-constrained systems where stability, small size, and no-capacitor operation are critical design requirements.
FAQ
What is the minimum operating current for LM4050BIM3-5.0?
The LM4050BIM3-5.0 requires a minimum shunt current of 80µA to maintain regulation at +25°C, increasing slightly at temperature extremes. Below this threshold, the device exits regulation and output voltage drops nonlinearly. Designers must ensure the series resistor and supply voltage combination guarantees ≥80µA under worst-case conditions (e.g., lowest VS and highest ILOAD).
Does LM4050BIM3-5.0 require an external output capacitor?
No, LM4050BIM3-5.0 does not require an external output capacitor and remains stable with any capacitive load - including 0µF. This eliminates BOM cost, layout area, and potential instability risks associated with capacitor ESR/ESL, making it ideal for compact, low-noise analog systems where board space is constrained.
What is the maximum junction temperature rating for LM4050BIM3-5.0?
The absolute maximum junction temperature for LM4050BIM3-5.0 is +150°C. Its specified operating temperature range is –40°C to +125°C ambient. At 15mA shunt current and 5.000V output, power dissipation reaches 75mW; combined with SC70 thermal resistance, designers must verify ambient + self-heating stays ≤+150°C - especially in sealed enclosures or high-ambient environments.
How does the LM4050BIM3-5.0 pinout differ from SOT23-3 variants?
LM4050BIM3-5.0 uses the same 3-pin SC70-3 pinout as its SOT23-3 counterparts: Pin 1 = Anode (+), Pin 2 = Cathode (−), Pin 3 = NC. However, SC70's 1.8mm × 1.8mm footprint is 50% smaller than SOT23's 2.9mm × 1.6mm, requiring distinct land patterns and reflow profiles - direct PCB substitution is not possible without layout revision.
Can LM4050BIM3-5.0 be used in forward-bias mode?
Yes, LM4050BIM3-5.0 can be forward-biased up to 10mA, clamping to ~0.7V below ground (i.e., –0.7V at Pin 1 relative to Pin 2). This mode is rarely used but enables limited protection or level-shifting functions. For reliable 5.000V reference operation, the device must operate in reverse-bias (shunt) mode with Pin 2 held at higher potential than Pin 1.
LM4050BIM3-5.0 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:
- Obsolete
- 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:
- 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
LM4050BIM3-5.0 FAQ
1.How can I place an order for LM4050BIM3-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3-5.0 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 LM4050BIM3-5.0 reliable?
The price and inventory of LM4050BIM3-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3-5.0 is usually 5 days.
3.What payment methods are accepted for LM4050BIM3-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3-5.0?
LM4050BIM3-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3-5.0 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 LM4050BIM3-5.0?
For technical support, including LM4050BIM3-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3-5.0 requirements.
6.How does Aetrix verify that LM4050BIM3-5.0 is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3-5.0 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 LM4050BIM3-5.0 meets industry standards.
7.What is the process for return or replacement of LM4050BIM3-5.0?
All LM4050BIM3-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3-5.0, 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 LM4050BIM3-5.0 part is unused and in its original packaging.
Return procedure for LM4050BIM3-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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