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  • LM4040CEX3-3.3-T

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Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages

  • Package/Case :
  • SC-70-3
  • Product Categories :
  • Voltage & Current References
  • RoHs Status:
  • Lead free/RoHS Compliant
  • Marking Code:
  • +AOA
  • In-stock:
  • 2500


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LM4040CEX3-3.3-T Product Details

The LM4040 is a precision two-terminal shunt mode, bandgap voltage reference available in fixed reverse breakdown voltages of 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. Ideal for space-critical applications, the LM4040 is offered in the subminiature 3-pin SC70 surface-mount package (1.8mm x 1.8mm), 50% smaller than comparable devices in SOT23 surface-mount packages (SOT23 versions are also available). Laser-trimmed resistors ensure precise initial accuracy. With a 100ppm/°C temperature coefficient, the device is offered in four grades of initial accuracy ranging from 0.1% to 1%. The LM4040 has a 60μA to 15mA shunt current capability with low dynamic impedance, ensuring stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents. The LM4040 does not require an external stabilizing capacitor while ensuring stability with any capacitive load. The LM4040 is guaranteed over the temperature range of -40°C to +125°C. For a 1.225V output version, refer to the LM4041 data sheet.


  • Ultra-Small 3-Pin SC70 Package
  • 0.1% (max) Initial Accuracy
  • 100ppm/°C (max) Temperature Coefficient Guaranteed over -40°C to +125°C Temperature Range
  • Wide Operating Current Range: 60μA to 15mA
  • Low 28μVRMS Output Noise (10Hz to 10kHz)
  • 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V Fixed Reverse Breakdown Voltages
  • No Output Capacitors Required
  • Tolerates Capacitive Loads
  • AEC-Q100 Qualified - Refer to Ordering Information table for /V parts


  • Automotive
  • Cell Phones
  • Industrial Process Controls
  • Notebook Computers
  • Portable Battery-Powered Equipment

LM4040CEX3-3.3-T Block Diagram
(Picture: Diagram)

Technical Parameters

  • Product
  • Voltage References
  • Topology
  • Shunt References
  • Output Voltage
  • 3.3 V
  • Initial Accuracy
  • 0.5 %
  • Average Temperature Coefficient (Typ)
  • 20 PPM / C
  • Shunt Current (Max)
  • 15 mA
  • Maximum Operating Temperature
  • + 125 C
  • Mounting Style
  • Package / Case
  • SC-70
  • Packaging
  • Reel
  • Minimum Operating Temperature
  • - 40 C
  • Reference Type
  • Precision
  • Series
  • LM4040

LM4040CEX3-3.3-T Documents

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Estimated Delivery Time: Aug 11 - Aug 16 days (choose Expedited at checkout).

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    Minimum order quantity starts from 1pcs.

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  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


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We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

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1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that LM4040CEX3-3.3-T is the original manufacturer or agent of MAXIM?
We have a professional business development department to strictly test and verify the qualifications of MAXIM original manufacturers and agents. All MAXIM suppliers must pass the qualification review before they can publish their LM4040CEX3-3.3-T devices; we pay more attention to the channels and quality of LM4040CEX3-3.3-T products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LM4040CEX3-3.3-T chips? Including MAXIM original factory information, Voltage & Current References application, LM4040CEX3-3.3-T pictures?
You can use Jotrin's intelligent search engine, or filter by Voltage References category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's LM4040CEX3-3.3-T price and stock displayed on the platform accurate?
The MAXIM's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LM4040CEX3-3.3-T, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Q: What is the process for returns or replacement of LM4040CEX3-3.3-T?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LM4040CEX33.3T we delivered, we will accept the replacement or return of the LM4040CEX3-3.3-T only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of LM4040CEX3-3.3-T.
(3)The LM4040CEX3-3.3-T is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as LM4040CEX3-3.3-T datasheet pdf, LM4040C pin diagram?
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Maxim Integrated

Maxim Integrated Products is a global range of linearity, mixed-signal integrated circuits (IC) design, R & D and manufacturing leader, has designed, developed, and manufactured analog, mixed-signal, high-frequency, and digital circuits that enable all four of these key interactions....
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