About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)PMIC - Voltage ReferenceLM4040A50IDCKR
LM4040A50IDCKR Image
LM4040A50IDCKR Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

LM4040A50IDCKR - Texas Instruments

Manufacturer Part Number
LM4040A50IDCKR
Manufacturer
Texas Instruments
Allelco Part Number
32D-LM4040A50IDCKR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
36,110 pcs available, New & Original
Parts Description
IC VREF SHUNT 0.1% SC70-5
Package
SC-70-5
Data sheet
LM4040A50IDCKR.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 36110
  • Unit Price: $1.407
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $1.407 $1.41
200+ $0.545 $109.00
500+ $0.526 $263.00
1000+ $0.517 $517.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

LM4040A50IDCKR Tech Specifications
Texas Instruments - LM4040A50IDCKR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - LM4040A50IDCKR

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Output (Min/Fixed) 5V
Voltage - Input -
Tolerance ±0.1%
Temperature Coefficient 100ppm/°C
Supplier Device Package SC-70-5
Series -
Reference Type Shunt
Package / Case 5-TSSOP, SC-70-5, SOT-353
Package Tape & Reel (TR)
Product Attribute Attribute Value
Output Type Fixed
Operating Temperature -40°C ~ 85°C (TA)
Noise - 10Hz to 10kHz 80µVrms
Noise - 0.1Hz to 10Hz -
Mounting Type Surface Mount
Current - Supply -
Current - Output 15 mA
Current - Cathode 95 µA
Base Product Number LM4040

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

LM4040A50IDCKR Image
LM4040A50IDCKR (1)

Manufacturer Part Number

LM4040A50IDCKR

Manufacturer

Texas Instruments

Introduction

Precision micropower shunt voltage reference

Product Features and Performance

5V fixed output voltage

Tolerance of ±0.1%

Low temperature coefficient of 100ppm/°C

Supports up to 15 mA output current

Low dynamic impedance

Product Advantages

Stable and precise voltage reference

Highly accurate over temperature variations

Small form factor suitable for high-density applications

Low output noise ideal for sensitive electronics

Key Technical Parameters

Voltage - Output (Min/Fixed): 5V

Current - Output: 15 mA

Tolerance: ±0.1%

Temperature Coefficient: 100ppm/°C

Noise - 10Hz to 10kHz: 80µVrms

Current - Cathode: 95 µA

Operating Temperature: -40°C to 85°C

Quality and Safety Features

Robust construction ensures reliability

Compliance with industry safety standards

Compatibility

Compatible with multiple surface mount technologies

Mounting Type: Surface Mount

Package / Case: 5-TSSOP, SC-70-5, SOT-353

Supplier Device Package: SC-70-5

Application Areas

Precision power supplies

Data acquisition systems

Portable and battery-powered equipment

Instrumentation and test equipment

Product Lifecycle

Active product status

Not indicated as near discontinuation

Several Key Reasons to Choose This Product

High precision voltage for critical applications

Consistent performance across a wide temperature range

Low noise output for high-fidelity applications

Suitable for automated surface mount production processes

Reputable manufacturer known for quality and reliability

Supports a variety of industrial and commercial applications

Frequently Asked Questions(FAQ)

What are the key electrical characteristics of the LM4040A50IDCKR that make it suitable for precision voltage reference applications in industrial control systems?
The LM4040A50IDCKR provides a fixed 5V output with exceptional accuracy of ±0.1%, which is critical for maintaining measurement integrity in analog signal chains. With a temperature coefficient of 100ppm/°C, it delivers stable performance across its -40°C to 85°C operating range, making it appropriate for environments where thermal variations could otherwise compromise system calibration. The device consumes only 95 µA cathode current, enabling low-power operation while still supporting up to 15 mA load capability when needed. Its 80µVrms noise specification over the 10Hz to 10kHz band ensures clean reference signals even in noisy industrial settings.
How does the LM4040A50IDCKR compare to other shunt references like the LM385 series when selecting components for battery-powered measurement equipment?
Unlike the LM385 family which typically offers higher cathode currents but lower precision (often ±1% or greater), the LM4040A50IDCKR achieves superior stability with tighter tolerance (±0.1%) and better temperature drift characteristics. While both serve similar functions, the LM4040's lower supply current (95 µA vs. often >500 µA in comparable LM385 devices) makes it more efficient for battery-operated applications requiring extended runtime. However, the LM4040 may require more careful PCB layout due to its smaller SC-70-5 package compared to through-hole alternatives from the LM385 line.
Can the LM4040A50IDCKR be used directly to power microcontrollers or sensors without additional regulation?
No, the LM4040A50IDCKR should not serve as a primary power source for active circuits. Although it can deliver up to 15 mA, this current represents available headroom above the minimum required to maintain regulation (95 µA). Using it to power devices would risk exceeding its maximum output current and potentially causing instability. Instead, it functions best as a precision reference input for analog-to-digital converters or error amplifiers where accurate voltage comparison matters more than power delivery.
What layout considerations are necessary when implementing the LM4040A50IDCKR in high-precision data acquisition systems?
Due to its 100ppm/°C temperature coefficient and tight ±0.1% tolerance, the LM4040A50IDCKR demands careful thermal management and routing practices. Place it away from heat-generating components and ensure adequate copper pour on both sides of the SC-70-5 package to minimize self-heating effects. Keep traces short and direct between the device terminals and decoupling capacitors—ideally using 4-mil traces or wider—to reduce resistance-induced voltage drops. Ground plane proximity helps stabilize the reference against electromagnetic interference.
Is the LM4040A50IDCKR suitable for automotive applications requiring AEC-Q100 qualification?
The LM4040A50IDCKR itself is not guaranteed for automotive use unless specifically qualified under AEC-Q100 Grade 1 or 2. Its commercial-grade rating (-40°C to 85°C) falls short of typical automotive requirements (-40°C to +125°C). For automotive designs, engineers should select TI’s automotive-qualified versions such as the LM4040A50TEX/NOPB or verify availability of Q100 variants within the LM4040 family through official channels.
How does the LM4040A50IDCKR handle transient conditions compared to zener-based references?
The LM4040A50IDCKR exhibits superior transient response relative to conventional zener diodes due to its integrated design and controlled dynamic impedance. When subjected to sudden load changes, it maintains output stability better than discrete zeners, which often suffer from overshoot and ringing due to parasitic inductance and capacitance effects. This makes it preferable in switching regulator feedback loops or systems experiencing rapid load transitions, provided the total current remains within the 95 µA to 15 mA window.
What external components are required to properly operate the LM4040A50IDCKR in a typical shunt configuration?
In a standard shunt setup, only bypass capacitors are typically needed. A small ceramic capacitor (e.g., 0.1 µF) placed close to the cathode pin helps suppress high-frequency noise and improve transient performance. No input or output capacitors are mandatory, though adding a larger bulk capacitor (such as 10 µF tantalum or ceramic) near the device can enhance stability under certain inductive load scenarios. The device regulates automatically based on the cathode current, so no additional circuitry is required beyond ensuring the supply voltage exceeds 5V by at least the dropout requirement.
Why might an engineer choose the SC-70-5 package of the LM4040A50IDCKR over larger SOT-23 alternatives in space-constrained designs?
The SC-70-5 (SOT-353) package measures approximately 2.1 mm x 1.3 mm, offering significant board real estate savings compared to SOT-23 footprints. Despite its small size, it maintains reliable solder joints thanks to its five-pin configuration and robust lead frame. Engineers opting for this package prioritize miniaturization without sacrificing precision, especially in portable instrumentation or compact sensor nodes where every millimeter counts. However, they must account for potential challenges in manual soldering or automated assembly due to the fine pitch and minimal standoff height.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments LM4040A50IDCKR

Product Attribute LM4040A50IDCKRG4 LM4040A41IDCKR LM4040A50IDBZR LM4040A82IDCKR
Part Number LM4040A50IDCKRG4 LM4040A41IDCKR LM4040A50IDBZR LM4040A82IDCKR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Current - Cathode - - - -
Temperature Coefficient - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current - Supply - - - -
Voltage - Input - - - -
Noise - 0.1Hz to 10Hz - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Current - Output - - - -
Tolerance - - - -
Reference Type - External, Internal External External, Internal
Mounting Type - Surface Mount Through Hole Surface Mount
Noise - 10Hz to 10kHz - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Output (Min/Fixed) - - - -
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42

LM4040A50IDCKR Datasheet PDF

Download LM4040A50IDCKR pdf datasheets and Texas Instruments documentation for LM4040A50IDCKR - Texas Instruments.

PCN Packaging
Multiple Devices 29/Sep/2015.pdf Retraction 15/Mar/2016.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
LM4040A50IDCKR Image

LM4040A50IDCKR

Texas Instruments
32D-LM4040A50IDCKR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB