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

LM3940IS-3.3/NOPB

  • Stock: 31

    Availability: InStock priceValidUntil: 2026-05-26

  • SKU: 7069 | DAG696

Availability: InStock priceValidUntil: 2026-05-26

  • 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.
How long does delivery take?
Delivery time depends on your PIN code and the courier network. Tracking is shared after dispatch.
I forgot to add GST number at time of placing order, but I need GST Invoice in my firms name?
You can contact us via Contact us page and send your order details and GST number we will send you updated Invoice soft copy.
What if I need a component that is not listed on your website?
Contact us with the part number or requirement — we may be able to source it or suggest an equivalent.
Will you send the same brand/manufacturer every time?
For some passive components, brand may vary based on availability. If you need a specific brand or matching lot, mention it before ordering and we’ll advise availability.

NEW Products

Product Page : New Products

Desolder Pump Imported Half Plastic + Half Metal

Desolder Pump Half Plastic Half Metal Desolder Pump with high suction power and Teflon nozzle for ea..

Rs.90.86 (inc GST)
Rs.77.00 + GST

SKU: 3377 | DAE715
Stock: 17

220uf 35 VOLT SMD ELECTROLYTIC CAPACITOR (MAKE:HYNCDZ)

HYNCDZ 220uF 35V SMD Electrolytic Capacitor HYNCDZ 220uF 35V SMD Capacitor for filtering, low ESR, ..

Rs.7.67 (inc GST)
Rs.6.50 + GST

SKU: 7984 | DAD631
Stock: 195

HLK VRB2405YMD-5WR3 CONVERTER DC-DC ISOLATED STABLE VOLTAGE OUTPUT POWER SUPPLY MODULE

HLK VRB2405YMD-5WR3 Converter HLK VRB2405YMD-5WR3 Converter, 24V to 5V, 5W, 1A, isolated output, wi..

Rs.501.50 (inc GST)
Rs.425.00 + GST

SKU: 4045 | DAG781
Stock: 11

RFID TAGS

RFID Tags EM4001 RFID Tag for access control + 125kHz frequency + 32-bit unique ID. The RFID Tags op..

Rs.35.40 (inc GST)
Rs.30.00 + GST

SKU: 12 | DAB803
Stock: 40

Have You Seen

Product Page : Have You Seen

MEANWELL SMPS LRS-200-5

Meanwell LRS-200-5 SMPS Power Supply UnitLRS-200-5, 200W power supply with 5V output voltage, 40A cu..

Rs.2,094.50 (inc GST)
Rs.1,775.00 + GST

SKU: 3874 | DAE779
Stock: 1

MCP3425A0T SMD IC (SOT-23)

Microchip MCP3425A0T ADC SMD IC for Precise Measurements MCP3425A0T ADC SMD IC offers 16-bit resolu..

Rs.224.20 (inc GST)
Rs.190.00 + GST

SKU: 5052 | DAG846
Stock: 3

Mornsun LS05-13B05R3 AC to DC Power Supply Module

Mornsun LS05-13B05R3 5 Watt AC to DC Power SupplyLS05-13B05R3 AC-DC Converter, 5V output, 5W, wide i..

Rs.171.10 (inc GST)
Rs.145.00 + GST

SKU: 2576 | DAC975
Stock: 20

GPS GLONASS MAGNETIC ANTENNA 3MTR SMA(M) ST

GPS GLONASS Magnetic Antenna 3M SMA(M) ST High-sensitivity antenna for GPS & GLONASS with 3m ca..

Rs.380.55 (inc GST)
Rs.322.50 + GST

SKU: 9324 | DAC900
Stock: 3

Related Products

BT169D Triac

BT169D Triac

BT169D TriacBT169 is a Passivated, sensitive gate thyristors in a plastic envelope.BT169 is a&n..

Rs.4.72 (inc GST)
Rs.4.00 + GST

SKU: 379 | DAA187
Stock: 76
H2010 10mm Photoelectric Sensor

H2010 10mm Photoelectric Sensor

H2010 10mm Photoelectric Sensor H2010 Photoelectric Sensor with high sensitivity, non-contact detect..

Rs.29.50 (inc GST)
Rs.25.00 + GST

SKU: 6069 | DAG901
Stock: 800
7" Official Raspberry Pi Display with Capacitive Touchscreen

7" Official Raspberry Pi Display with Capacitive Touchscreen

Raspberry Pi 7" Capacitive Touchscreen Display 7" display with 10-finger touch support, connects via..

Rs.7,800.01 (inc GST)
Rs.6,610.18 + GST

SKU: 7499 | DAG997
Stock: 1
TDA1519B Amplifier DIP IC

TDA1519B Amplifier DIP IC

TDA1519B Amplifier DIP IC - High-Performance Audio Solution TDA1519B Amplifier DIP IC offers dual p..

Rs.120.71 (inc GST)
Rs.102.30 + GST

SKU: 9306 | DAD177
Stock: 0
HCPL A7800 Isolation Amplifier SMD IC

HCPL A7800 Isolation Amplifier SMD IC

HCPL A7800 Isolation Amplifier SMD IC HCPL A7800 Isolation Amplifier with 15 kV/μs transient immuni..

Rs.181.72 (inc GST)
Rs.154.00 + GST

SKU: 8884 | DAI228
Stock: 0