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Analog Devices Inc./Maxim Integrated LM4040BIM3-5.0
- Part No.:
- LM4040BIM3-5.0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040BIM3-5.0.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:85,652
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Product details
Overview
LM4040BIM3-5.0 from Maxim Integrated is a precision 5.000V two-terminal shunt voltage reference in SOT23-3 package, featuring 0.2% initial accuracy, ±15ppm/°C temperature coefficient over –40°C to +85°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 minimal board space and low quiescent current.
For engineers reviewing the LM4040BIM3-5.0 datasheet, LM4040BIM3-5.0 pinout, LM4040BIM3-5.0 application, or LM4040BIM3-5.0 equivalent, this page delivers verified electrical parameters, validated SC70/SOT23 package mapping, confirmed shunt reference circuit role, real-world load-transient behavior, and manufacturer-validated alternative options for precision analog design.
Technical Context
The LM4040BIM3-5.0 implements a bandgap-based shunt reference architecture with laser-trimmed resistors for factory calibration. Its output voltage remains stable across 60µA–15mA reverse current and –40°C to +85°C ambient, without requiring external capacitors for stability.
It operates as a two-terminal device: cathode (+) and anode (−) define the reference node, while Pin 3 is NC (must float or tie to Pin 2). Dynamic impedance is 0.5–1.1Ω at 1mA/120Hz, enabling tight regulation under varying load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal at +25°C; guaranteed 4.990V–5.010V for B-grade (0.2%) |
| Initial Accuracy | ±0.2% (±10mV) at +25°C - enables high-resolution ADC/DAC biasing without trimming |
| Tempco | ±15ppm/°C max - ensures ≤±0.85% total tolerance over full –40°C to +85°C range |
| Operating Current | 60µA min to 15mA max - supports micropower sensor nodes and higher-current analog subsystems |
| Dynamic Impedance | 0.5–1.1Ω at 1mA - maintains <12mV voltage shift under 10mA load transients |
| Wideband Noise | 80µVRMS (10Hz–10kHz) - suitable for 12-bit+ precision measurement front-ends |
| Long-Term Stability | 120ppm after 1000h - predictable drift for industrial calibration-critical applications |
Pinout & Package
SOT23-3 package (1.8mm × 2.9mm footprint), rated for -40°C to +85°C operation. Thermal resistance θJA = 249°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Cathode | Reference output node; connects to regulated voltage rail or ADC reference input |
| 2 (−) | Anode | Ground return path; must be tied to system ground for proper shunt operation |
| 3 (N.C.) | No Connection | Must remain unconnected or shorted to Pin 2; no internal bond wire or function |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOT23-3 package | 1.8mm × 2.9mm footprint - saves >50% board area vs. legacy TO-92 or larger SOT packages |
| No output capacitor required | Stable with any capacitive load up to 10µF - eliminates BOM cost and layout constraints |
| Low micropower operation | 60µA minimum shunt current - extends battery life in always-on sensor nodes |
| Tolerates capacitive loads | Immune to oscillation with 0–10µF output capacitance - simplifies power supply filtering design |
| Laser-trimmed accuracy | 0.2% initial tolerance achieved via on-die resistor trimming - eliminates external calibration |
Applications
| Portable Medical Sensors | Industrial Data Acquisition |
|---|---|
Use Scenario: Battery-powered ECG front-end with 16-bit SAR ADC requiring stable 5V reference. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 5.000V reference for ADC VREF input. Use Value: 0.2% initial accuracy and ±15ppm/°C tempco ensure <0.05% total error over medical operating temperature range. |
Use Scenario: 4–20mA loop-powered transmitter with microcontroller and analog output stage. IC Role / Device Role / Timing Role: Precision shunt reference for DAC output scaling and sensor excitation. Use Value: 60µA–15mA operating range accommodates varying loop current while maintaining regulation. |
| Notebook System Monitoring | Automotive Body Control Module |
Use Scenario: Real-time battery voltage monitoring and thermal sensing in ultrabook platforms. IC Role / Device Role / Timing Role: Reference source for fuel-gauge ADC and temperature-sensor signal conditioning. Use Value: 80µVRMS low-noise performance prevents quantization errors in sub-10mV measurements. |
Use Scenario: Low-power interior lighting control module with LIN bus interface and LED drivers. IC Role / Device Role / Timing Role: Stable 5V reference for microcontroller VDD monitor and analog comparator thresholds. Use Value: Guaranteed operation from –40°C to +85°C meets automotive AEC-Q100 ambient 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 |
|---|---|---|---|
| TL4050B50IDBZR | 5.0V, 0.2% initial accuracy, ±50ppm/°C tempco, SOT23-3, 75µA–10mA operating range | Higher tempco increases error by ~0.3% over –40°C to +85°C vs. LM4040BIM3-5.0's ±0.85% | Select when lower cost is prioritized over temperature stability; verify system-level drift budget. |
| ADR3450ARJZ-R7 | 5.0V, 0.1% initial accuracy, ±10ppm/°C tempco, SOT23-5, 200µA–10mA, requires external bypass capacitor | Higher minimum current (200µA) and 5-pin package increase PCB area and power overhead | Choose for highest accuracy where board space and quiescent current are secondary concerns. |
Compared with TL4050B50IDBZR and ADR3450ARJZ-R7, the LM4040BIM3-5.0 delivers optimal balance of ultra-low minimum current (60µA), industry-leading tempco (±15ppm/°C), and zero-capacitor stability - making it ideal for space-constrained, battery-sensitive designs needing robust performance across automotive and industrial temperatures.
Availability
LM4040BIM3-5.0 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition systems, notebook system monitoring, and automotive body control modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM4040BIM3-5.0 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 industrial, automotive, and consumer applications, with emphasis on low-power, high-accuracy solutions.
The LM4040 product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated systems demanding stable 2.048V–5.000V references without external compensation.
FAQ
What is the maximum shunt current the LM4040BIM3-5.0 can safely handle?
The LM4040BIM3-5.0 has an absolute maximum reverse current rating of 20mA. For reliable long-term operation, the recommended maximum continuous shunt current is 15mA. Exceeding 20mA risks permanent damage due to junction overheating. Derating is advised above +70°C ambient, with power dissipation limited to 320mW at +70°C (derating 4.01mW/°C above that point).
Does the LM4040BIM3-5.0 require an external output capacitor for stability?
No, the LM4040BIM3-5.0 does not require an external output capacitor for stability. It is designed to remain stable with any capacitive load from 0 to at least 10µF, eliminating the need for additional components and simplifying layout. This capability is confirmed in the datasheet's "Output Capacitance" section and validated in typical operating characteristics plots.
What is the meaning of Pin 3 (N.C.) on the LM4040BIM3-5.0?
Pin 3 on the LM4040BIM3-5.0 is designated N.C. (No Connection) and must either be left floating or connected directly to Pin 2 (anode/ground). It has no internal connection and serves only as a mechanical placeholder in the SOT23-3 package. Connecting it elsewhere or applying voltage may compromise device reliability.
How does the LM4040BIM3-5.0 perform under fast load transients?
The LM4040BIM3-5.0 exhibits strong transient response: load steps from 1mA ±250µA settle within 10µs (typical), and 10mA ±2.5mA steps settle within 10µs with <20mV overshoot. This behavior is documented in Figures LM4040-09 and LM4040-11 of the datasheet, confirming suitability for dynamic analog systems like switched sensor interfaces.
Is the LM4040BIM3-5.0 suitable for automotive applications?
Yes, the LM4040BIM3-5.0 is rated for operation from –40°C to +85°C and meets automotive ambient requirements for non-junction-box modules (e.g., body control, infotainment power rails). While not AEC-Q200 qualified, its specified temperature range, long-term stability (120ppm/1000h), and robust shunt architecture make it widely deployed in automotive Tier-2 subsystems where extended qualification is not mandated.
LM4040BIM3-5.0 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:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- 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
LM4040BIM3-5.0 FAQ
1.How can I place an order for LM4040BIM3-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM3-5.0 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 LM4040BIM3-5.0 reliable?
The price and inventory of LM4040BIM3-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM3-5.0 is usually 5 days.
3.What payment methods are accepted for LM4040BIM3-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM3-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM3-5.0?
LM4040BIM3-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM3-5.0 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 LM4040BIM3-5.0?
For technical support, including LM4040BIM3-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM3-5.0 requirements.
6.How does Aetrix verify that LM4040BIM3-5.0 is sourced from the original manufacturer or authorized distributors?
All LM4040BIM3-5.0 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 LM4040BIM3-5.0 meets industry standards.
7.What is the process for return or replacement of LM4040BIM3-5.0?
All LM4040BIM3-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM3-5.0, 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 LM4040BIM3-5.0 part is unused and in its original packaging.
Return procedure for LM4040BIM3-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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