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Texas Instruments LM4041CIM3-ADJ/NOPB
- Part No.:
- LM4041CIM3-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041CIM3-ADJ/NOPB.pdf
- Description:
- IC VREF SHUNT ADJ 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:16,304
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Product details
Overview
LM4041CIM3-ADJ/NOPB from Texas Instruments is a precision adjustable shunt voltage reference in SOT-23 package, delivering 1.233 V nominal reference voltage with ±0.5% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 20 μVRMS wideband noise (10 Hz–10 kHz). It operates from 60 μA to 12 mA over −40°C to +125°C, enabling high-accuracy feedback in low-power analog signal chains.
For engineers reviewing the LM4041CIM3-ADJ/NOPB datasheet, LM4041CIM3-ADJ/NOPB pinout, LM4041CIM3-ADJ/NOPB application, or LM4041CIM3-ADJ/NOPB equivalent, key selection criteria include its adjustable output (1.24 V to 10 V), no-output-capacitor requirement, capacitive-load stability, automotive-grade qualification (AEC-Q100 Grade 1), and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4041CIM3-ADJ/NOPB uses a bandgap-based shunt architecture with curvature-corrected temperature drift compensation, achieving stable reverse breakdown voltage across industrial and extended temperature ranges. Its feedback (FB) pin enables external resistor-divider programming of output voltage while maintaining low dynamic impedance (0.3 Ω typical at 1 mA).
It features fuse/Zener-zap wafer-level trimming for ±0.5% initial accuracy (C grade), supports operation down to 60 μA minimum current, and tolerates capacitive loads without oscillation-eliminating need for external stabilization capacitors in most designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V nominal at 100 μA, programmable up to 10 V via external resistors |
| Initial Tolerance | ±0.5% at 25°C (C grade), enabling high-accuracy ADC/DAC biasing without calibration |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C, ensuring <±1.24 mV drift across full range |
| Noise (10 Hz–10 kHz) | 20 μVRMS, suitable for precision instrumentation and low-noise sensor interfaces |
| Operating Current | 60 μA to 12 mA, supporting ultra-low-power battery systems and high-current regulation |
| Dynamic Impedance | 0.3 Ω typical at 1 mA, minimizing load-induced voltage variation in feedback loops |
| Thermal Hysteresis | 0.08%, limiting repeatability error after thermal cycling in automotive environments |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm), surface-mount, with anode grounded, cathode as shunt/output node, and FB pin for adjustable configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Ground reference terminal | Must be connected to system ground; floating or misconnection disables regulation |
| Cathode (Pin 2) | Shunt current sink / output node | Carries total shunt current; connects to feedback divider top and load return path |
| FB (Pin 1) | Feedback input | High-impedance (≤100 nA) input that sets output voltage via external resistor divider (VOUT = VREF × (1 + R1/R2)) |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output range | 1.24 V to 10 V via two-resistor divider, enabling flexible system-level voltage scaling |
| No output capacitor required | Stable with any capacitive load, reducing BOM count and layout area in compact designs |
| AEC-Q100 Grade 1 qualified | Rated for −40°C to +125°C ambient, validated for automotive powertrain and body electronics |
| Low quiescent current | 60 μA minimum operating current, extending battery life in portable metering devices |
| Low dynamic impedance | 0.3 Ω typical at 1 mA, improving load regulation and transient response in closed-loop systems |
Applications
| Battery-Powered Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Precision voltage reference for 16-bit SAR ADCs in handheld multimeters and portable gas sensors. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.5 V or 5 V reference to ADC VREF pin via resistor divider. Use Value: Enables ±0.5 LSB accuracy over temperature without calibration, leveraging 100 ppm/°C TC and 20 μVRMS noise. | Use Scenario: Reference source for isolated analog front-ends in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Adjustable shunt reference generating 4.096 V for 12-bit DACs driving 4–20 mA transmitters. Use Value: Programmable output eliminates need for multiple fixed references; SOT-23 footprint saves space on dense isolation barriers. |
| Automotive Electronics | Energy Management/Metering |
Use Scenario: Voltage reference for battery monitoring ICs in 12 V vehicle subsystems (e.g., ADAS camera power rails). IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 shunt reference supplying regulated 3.3 V to microcontroller ADC and comparator inputs. Use Value: Guaranteed operation from −40°C to +125°C ambient ensures reliability in under-hood environments. | Use Scenario: Reference for polyphase energy meter ICs measuring kWh consumption in smart meters. IC Role / Device Role / Timing Role: Low-drift (100 ppm/°C), low-noise (20 μVRMS) shunt reference feeding metrology ADCs. Use Value: Meets IEC 62053-21 Class 0.2 accuracy requirements over full temperature range without active compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | Fixed 2.495 V reference; higher 2.5 mA min current; 22 Ω typical ZOUT; no adjustable version | Requires external op-amp for adjustable outputs; unsuitable for sub-1 mA ultra-low-power designs | Choose when fixed 2.5 V output suffices and higher current capability is acceptable |
| MAX6008AEUR+T | Fixed 1.25 V output; 30 ppm/°C TC; 15 μVRMS noise; SC70-3 package; 1.2 μA max supply current | Lacks adjustability; optimized for ultra-low-power sensor biasing, not feedback loop control | Prefer for always-on sensor nodes where lowest possible current dominates over flexibility |
Compared with TL431CDBZR and MAX6008AEUR+T, LM4041CIM3-ADJ/NOPB uniquely combines adjustable output (1.24–10 V), ultra-low 60 μA minimum current, and AEC-Q100 Grade 1 qualification-making it optimal for automotive and portable precision systems requiring both flexibility and robustness.
Availability
LM4041CIM3-ADJ/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and automotive electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4041CIM3-ADJ/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision analog ICs.
The LM4041-N series was designed for high-accuracy, low-power shunt reference applications in space-constrained, thermally demanding environments-including automotive, industrial, and portable instrumentation.
FAQ
What is the maximum output voltage supported by LM4041CIM3-ADJ/NOPB?
The LM4041CIM3-ADJ/NOPB supports an adjustable output voltage range from 1.24 V to 10 V, set by an external resistor divider connected to the FB pin. This upper limit is specified in the datasheet's Recommended Operating Conditions and confirmed in Section 5.8 for the C-grade SOT-23 variant. Operation beyond 10 V risks violating absolute maximum ratings and invalidating AEC-Q100 qualification.
Does LM4041CIM3-ADJ/NOPB require an external output capacitor?
No, LM4041CIM3-ADJ/NOPB does not require an external output capacitor. Its internal design provides inherent stability with any capacitive load, as explicitly stated in the Features section and verified in the Detailed Description. This eliminates BOM cost and layout complexity-especially valuable in ultra-compact PCBs where space is constrained.
What is the minimum operating current for LM4041CIM3-ADJ/NOPB at 25°C?
The minimum operating current for LM4041CIM3-ADJ/NOPB at 25°C is 60 μA, as specified in Section 5.8 (Electrical Characteristics for ADJ version, C grade). This value is confirmed for both SOT-23 and SC70 packages and enables reliable regulation in ultra-low-power applications such as battery-backed real-time clocks and wireless sensor nodes.
Is LM4041CIM3-ADJ/NOPB qualified for automotive use?
Yes, LM4041CIM3-ADJ/NOPB is AEC-Q100 qualified as Grade 1 (−40°C to +125°C ambient), per the device information table and Features section. This qualification applies specifically to the SOT-23 package variant and covers thermal cycling, humidity, and ESD robustness-making LM4041CIM3-ADJ/NOPB suitable for engine control units, ADAS modules, and other under-hood automotive systems.
How does the feedback (FB) pin function in LM4041CIM3-ADJ/NOPB?
The FB pin in LM4041CIM3-ADJ/NOPB is a high-impedance (≤100 nA typical) input that senses the divided output voltage. When connected to a resistor divider between cathode and ground, it forces the cathode voltage to maintain VREF × (1 + R1/R2). This enables precise, externally programmable output voltages from 1.24 V to 10 V without internal trimming or additional active components.
LM4041CIM3-ADJ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- Voltage - Output (Max):
- 10 V
- Current - Output:
- 12 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041CIM3-ADJ/NOPB FAQ
1.How can I place an order for LM4041CIM3-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CIM3-ADJ/NOPB 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 LM4041CIM3-ADJ/NOPB reliable?
The price and inventory of LM4041CIM3-ADJ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CIM3-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041CIM3-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041CIM3-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041CIM3-ADJ/NOPB?
LM4041CIM3-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CIM3-ADJ/NOPB 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 LM4041CIM3-ADJ/NOPB?
For technical support, including LM4041CIM3-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CIM3-ADJ/NOPB requirements.
6.How does Aetrix verify that LM4041CIM3-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041CIM3-ADJ/NOPB 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 LM4041CIM3-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041CIM3-ADJ/NOPB?
All LM4041CIM3-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CIM3-ADJ/NOPB, 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 LM4041CIM3-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM4041CIM3-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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