LM4041QCIM3-ADJ/NO Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
Texas Instruments LM4041QCIM3-ADJ/NO is a precision micropower adjustable shunt voltage reference with 1.225V nominal output, AEC-Q100 automotive qualification, ultra-low 45µA operating current, and SOT-23-3 package for automotive and industrial precision circuits.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- LM4041QCIM3-ADJ/NO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6430(MOQ 25)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- AEC-Q100 automotive-grade qualification ensuring reliable operation across -40°C to +125°C temperature range in harsh environments
- 1.225V precision shunt reference with ±0.5% initial accuracy and 50ppm/°C temperature coefficient for stable ADC biasing
- Ultra-low 45µA operating current enabling battery-powered and always-on reference circuits with minimal quiescent drain
- Adjustable output voltage using two external resistors allows custom reference levels above 1.225V up to supply rail
Applications
The LM4041QCIM3-ADJ/NO is suited for automotive battery management systems, ADAS sensor power rails, and instrumentation circuits requiring a stable voltage reference across the -40°C to +125°C automotive temperature range. Its AEC-Q100 qualification and tight 1.225V accuracy make it ideal as an ADC reference in engine control units and body electronics where long-term drift would cause measurement errors. The 3-pin SOT-23 package and micropower consumption allow placement directly at the ADC reference pin with negligible thermal or PCB area impact.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 1.251V |
| Output Voltage-Min | 1.215V |
| Output Voltage-Nom | 1.225V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 100ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trim/Adjustable Output | YES |
| Voltage Tolerance-Max | 0.5% |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM4041QCIM3-ADJ/NO:
Voltage Reference, 1 Output, 1.233V, Trim/Adjustable, BIPolar, PDSO3
Frequently Asked Questions
How does the AEC-Q100 qualification of the LM4041QCIM3-ADJ/NO affect its suitability for under-hood automotive circuits?
AEC-Q100 Grade 1 qualification requires the LM4041QCIM3-ADJ/NO to pass stress tests for -40°C to +125°C operation, high-temperature storage, and electrostatic discharge exceeding 2kV HBM. This certification ensures the device survives the temperature cycling, vibration, and contamination exposure found in engine-bay sensor modules and battery management systems for at least 15 years of vehicle service life.
What is the minimum operating current required by the LM4041QCIM3-ADJ/NO and how does it compare to competing shunt references?
The LM4041QCIM3-ADJ/NO requires a minimum operating current of 45µA with a reverse breakdown voltage of 1.225V. This is significantly lower than older TL431-family shunt references that require at least 1mA, making the LM4041 up to 20x more efficient in always-on reference circuits in automotive key-off modes where total standby current budgets are often below 1mA.
Can the LM4041QCIM3-ADJ/NO output a reference voltage other than 1.225V, and if so how is it configured?
Yes, the adjustable version generates any output from 1.225V to approximately the supply rail by connecting two resistors in a voltage-divider feedback network from the output to the adjustment pin. Using 1% thin-film resistors, designers can set common reference voltages such as 2.5V, 3.0V, or 4.096V with total error under ±1%, suitable for 12-bit and 14-bit ADC reference requirements in automotive sensor interfaces.
How does the 3-pin SOT-23 package of the LM4041QCIM3-ADJ/NO simplify placement near precision ADC inputs on automotive ECU boards?
The SOT-23-3 package measures approximately 2.9mm x 1.6mm, enabling the voltage reference to be placed within 5mm of the ADC reference pin, minimizing trace inductance and capacitive coupling that can introduce noise into 12-bit or higher ADC conversions. Automotive ECU layouts typically allocate under 10mm² for reference circuit blocks, and the 3-pin SOT-23 with two resistors fits comfortably within that budget.
What initial accuracy and temperature drift does the LM4041QCIM3-ADJ/NO offer and how does it affect system-level measurement error?
The LM4041QCIM3-ADJ/NO provides ±0.5% initial accuracy at the 1.225V nominal output, equating to a worst-case error of ±6.1mV, with a temperature coefficient of 50ppm/°C. Over the full -40°C to +125°C automotive range (165°C span), drift adds another ±10mV, yielding a total reference error below ±16mV, which contributes less than 0.4 LSB error on a 12-bit ADC referenced to 5V — acceptable for most vehicle sensor measurement chains.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.7460 | $18.65 |
| 100+ | $0.6610 | $66.10 |
| 250+ | $0.6430 | $160.75 |
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