Product Images are shown for illustrative purposes only and may differ from actual product.

LM3940IS-3.3/NOPB

  • Stock: 31

    Availability: InStock priceValidUntil: 2026-07-28

  • SKU: 7069 | DAG696

Availability: InStock priceValidUntil: 2026-07-28

  • Rs. 148.68 (inc GST)
    Rs.126.00 + GST

    Qty :

GST Invoice: Available for all purchases; eligible for input tax credit.

Delivery: 2–8 days across India. No MOQ required.

Bulk Orders: Need a larger quantity or item not in stock? Email: dnatechindia [at] gmail.com

Import Service: We import a wide range of electronic components on request.

LM3940 Low-Dropout Voltage Regulator 3.3V

LM3940IS-3.3/NOPB, 1A low-dropout regulator with 3.3V output and 4.5V input range.

The LM3940 Low-Dropout Voltage Regulator 3.3V provides a stable 3.3 V output from a 5 V supply. It is ideal for systems that require both 5 V and 3.3 V logic levels, ensuring reliable performance with input voltages as low as 4.5 V. With a TO-220 package, it can deliver up to 1 A of load current without additional heatsinking.

Designed for efficiency, the LM3940 Low-Dropout Voltage Regulator 3.3V features excellent load regulation and only requires one external component for operation. It includes built-in protection against excessive temperature and short circuits, making it a safe choice for various applications.

Commonly used in laptop and desktop computers, as well as in post-regulation for switching supplies, the LM3940 Low-Dropout Voltage Regulator 3.3V is a reliable component for logic systems. Explore its capabilities to enhance your electronic projects.

Explore the reliability of OPAMP products at DNA. The OPAMP category offers a range of precision voltage regulators. Check other OPAMP that we have in stock.

If you need specific electronic components, reach out to us. We can help you find parts like Power Supply, HMI Display, LCD, Development boards, Microcontroller, or Diode. We also support importing if items are not available. Contact Us.

Features of LM3940 Low-Dropout Voltage Regulator 3.3V

  • Input Voltage Range: 4.5 V to 5.5 V
  • Output Voltage Specified over Temperature
  • Excellent Load Regulation
  • Specified 1-A Output Current
  • Requires only One External Component
  • Built-in Protection against Excess Temperature
  • Short-Circuit Protected

Specification of LM3940 Low-Dropout Voltage Regulator 3.3V

  • Input Voltage Range: 4.5V to 5.5V
  • Output Voltage: 3.3V (fixed)
  • Output Current: 1A
  • Package Type: TO-263
  • Mounting Style: Surface mount
  • Number of Pins: 3

Applications of LM3940 Low-Dropout Voltage Regulator 3.3V

  • Laptop and Desktop Computers
  • Post-regulation for switching supplies
  • Logic Systems

Related Links for LM3940 Low-Dropout Voltage Regulator 3.3V

Package Includes

  • 1 X LM3940IS-3.3/NOPB
Extra Information
Country of Origin China
Imported By ElectroSource Private Limited

Reviews (0)

Write a review

Note: HTML is not translated!
    Bad           Good
CAPTCHA verification code

Frequently Asked Questions

Do you provide a GST bills?
Yes we provide GST Bill by the name of DNA Solutions. You will receive a GST compliant invoice for your records. You can take GST benefit.
What is your return / replacement policy?
Returns/replacements depend on the item type and condition. If there’s an issue, contact us with photos/videos and we’ll guide you as per policy.
Do you offer same-day / next-day delivery in Nashik?
If feasible, yes. Send: item list + quantity + delivery PIN code, and we’ll confirm availability, courier option, and cost.
What payment methods do you accept?
We accept UPI, cards, netbanking, and other checkout options shown on the payment page.
How can I contact you for support, sales, or bulk orders?
Use the Contact Us page or email/phone mentioned on the website with your part number and requirement.
Can I return a component if I ordered the wrong value/package?
If the item is unused and in original packaging, we’ll check eligibility case-by-case. Some items may be non-returnable depending on category/condition.

NEW Products

Product Page : New Products

AD5761ARUZ Digital to Analog Converter(TSSOP)

AD5761ARUZ Digital to Analog Converter IC AD5761ARUZ DAC with 16-bit resolution, unipolar or bipolar..

Rs.1,379.84 (inc GST)
Rs.1,169.36 + GST

SKU: 8687 | DAH962
Stock: 1

DFRobot Gravity: GR10-30 Gesture Sensor (UART & I2C, 12 Gestures, 0~30cm)

DFRobot Gravity: GR10-30 Gesture Sensor (UART & I2C, 12 Gestures, 0~30cm)GR10-30 gesture sensor ..

Rs.2,344.90 (inc GST)
Rs.1,987.20 + GST

SKU: 10353 | DAJ185
Stock: 3

Stainless Steel No-Touch Exit Switch 3A Max. Current Contactless Access Control Door Switch Touchless Exit Button

Stainless Steel No-Touch Exit Switch - Contactless Access ControlStainless Steel No-Touch Exit Switc..

Rs.508.88 (inc GST)
Rs.431.25 + GST

SKU: 9783 | DAI562
Stock: 5

A2409S-2WR2 Mornsun DC-DC Converter

Mornsun DC-DC Converter A2409S-2WR2 2W Power Supply A2409S-2WR2 DC-DC Converter, 2W isolated power ..

Rs.424.80 (inc GST)
Rs.360.00 + GST

SKU: 3962 | DAG662
Stock: 5

Have You Seen

Product Page : Have You Seen

CH376 USB Host Interface Module

CH376 USB Host Interface ModuleCH376 is used as file manage control chip, used to MCU system read/wr..

Rs.509.76 (inc GST)
Rs.432.00 + GST

SKU: 1465 | DAA974
Stock: 19

HLK-40M24 AC to DC 40 Watts 24 Volts Module

HLK-40M24 24V 40W Power Supply Module HLK-40M24 Power Supply Module converts 90-264V AC to 24V DC w..

Rs.1,349.91 (inc GST)
Rs.1,143.99 + GST

SKU: 2647 | DAE086
Stock: 1

Arduino Leonardo

Arduino Leonardo R3 Microcontroller Board Arduino Leonardo R3 Board with ATmega32U4, 20 Digital I/O..

Rs.866.12 (inc GST)
Rs.734.00 + GST

SKU: 1344 | DAB269
Stock: 1

Sensirion SCD30 CO2 Sensor 400-10000 ppm, Temp & RH, I2C Output

Sensirion SCD30 CO2 Sensor 400-10000 ppm, I2C Output Sensirion SCD30 CO2 Sensor, 400-10000 ppm, Te..

Rs.1,961.75 (inc GST)
Rs.1,662.50 + GST

SKU: 9735 | DAI578
Stock: 10

Related Products

MCP604 Single Supply CMOS Op Amp

MCP604 Single Supply CMOS Op Amp

MCP604 Single Supply CMOS Op AmpsThe MCP604 quad operational amplifier (op amp) has a gain bandwidth..

Rs.64.90 (inc GST)
Rs.55.00 + GST

SKU: 643 | DAA051
Stock: 0
Analog pH Sensor/Meter Kit

Analog pH Sensor/Meter Kit

Analog pH Sensor/Meter KitpH stands for power of hydrogenNeed to measure water quality and other par..

Rs.3,538.82 (inc GST)
Rs.2,999.00 + GST

SKU: 1043 |
Stock: 0
AD8221 Precision Instrumentation Amplifier

AD8221 Precision Instrumentation Amplifier

AD8221ARZ Precision Instrumentation Amplifier IC AD8221ARZ Precision Amplifier IC; Gain programmabl..

Rs.578.20 (inc GST)
Rs.490.00 + GST

SKU: 3150 | DAE854
Stock: 1
LMC6484IM/NOPB CMOS Amplifier 4 Circuit Rail-to-Rail 14-SOIC SMD IC

LMC6484IM/NOPB CMOS Amplifier 4 Circuit Rail-to-Rail 14-SOIC SMD IC

LMC6484IM/NOPB CMOS Operational Amplifier LMC6484IM/NOPB Op-Amp with rail-to-rail capability, low p..

Rs.371.70 (inc GST)
Rs.315.00 + GST

SKU: 7081 | DAG627
Stock: 0
Mini USB 2.0 Type A Male To Female Adaptor

Mini USB 2.0 Type A Male To Female Adaptor

Mini USB 2.0 Type A Male To Female Adaptor Mini USB 2.0 Type A Male to Female Adapter for high-speed..

Rs.162.37 (inc GST)
Rs.137.60 + GST

SKU: 9469 | DAI337
Stock: 0
3 Pin 2.50mm SHS FEMALE TO FEMALE Connector

3 Pin 2.50mm SHS FEMALE TO FEMALE Connector

3 Pin 2.50mm SHS Female to Female Connector 3 Pin 2.50mm SHS Female to Female Connector for secure ..

Rs.19.77 (inc GST)
Rs.16.76 + GST

SKU: 9272 | DAD001
Stock: 15
XL2576 Buck Switching Regulator IC (TO-220-5) Adj

XL2576 Buck Switching Regulator IC (TO-220-5) Adj

XL2576 Buck Switching Regulator IC for DC-DC Applications XL2576 Buck Regulator IC with adjustable ..

Rs.46.14 (inc GST)
Rs.39.10 + GST

SKU: 9057 | DAF779
Stock: 50