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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - LinearLM3940ISX-3.3
Texas Instruments
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See specifications for product details.

LM3940ISX-3.3 - Texas Instruments

Manufacturer Part Number
LM3940ISX-3.3
Manufacturer
Texas Instruments
Allelco Part Number
32D-LM3940ISX-3.3
ECAD Model
Parts Description
IC REG LIN 3.3V 1A DDPAK/TO263-3
Detailed Description
Package
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Data sheet
LM3940ISX-3.3.pdf
RoHs Status
ROHS3 Compliant
In stock: 28976

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Quantity

Specifications

LM3940ISX-3.3 Tech Specifications
Texas Instruments - LM3940ISX-3.3 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - LM3940ISX-3.3

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage Dropout (Max) 0.2V @ 100mA  
Voltage - Output (Min/Fixed) 3.3V  
Voltage - Output (Max) -  
Voltage - Input (Max) 7.5V  
Supplier Device Package DDPAK/TO-263-3  
Series -  
Protection Features Over Temperature, Short Circuit  
Package / Case TO-263-4, D²Pak (3 Leads + Tab), TO-263AA  
Package Tape & Reel (TR)  
Product Attribute Attribute Value  
PSRR -  
Output Type Fixed  
Output Configuration Positive  
Operating Temperature -40°C ~ 125°C  
Number of Regulators 1  
Mounting Type Surface Mount  
Current - Output 1A  
Control Features -  
Base Product Number LM3940  

Parts Introduction

Manufacturer Part Number

LM3940ISX-3.3

Manufacturer

Texas Instruments

Introduction

The LM3940ISX-3.3 is a low dropout regulator designed for converting higher voltage to lower voltage with minimal power loss.

Product Features and Performance

Fixed output voltage of 3.3V

Maximum input voltage of 7.5V

Low dropout voltage of 0.2V at 100mA load

Output current capability of 1A

Over Temperature and Short Circuit Protection

Suitable for surface mount technology with TO-263 package

Product Advantages

High efficiency due to low dropout voltage

Robust thermal and circuit protection enhances reliability

Compact TO-263 package ideal for space-constrained applications

Key Technical Parameters

Input Voltage (Max): 7.5V

Output Voltage (Min/Fixed): 3.3V

Voltage Dropout (Max): 0.2V @ 100mA

Current - Output: 1A

Quality and Safety Features

Over Temperature Protection

Short Circuit Protection

Operating Temperature Range: -40°C to 125°C

Compatibility

Compatible with various applications requiring a fixed 3.3V with up to 1A output

Application Areas

Consumer Electronics

Telecommunication Circuits

Portable Devices

Product Lifecycle

Status: Last Time Buy

Indicates nearing discontinuation with consideration for alternatives or upgrades necessary

Several Key Reasons to Choose This Product

High reliability with integrated protection features

Efficient power conversion suitable for portable devices

Supports a broad operating temperature range suitable for extreme conditions

Last Time Buy status offers a chance for bulk purchase before discontinuation

Ideal for applications where space and efficiency are critical

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments LM3940ISX-3.3

Product Attribute LM3940ISX-3.3 LM3940IT-3.3 LM3940IMPX-3.3 LM3940IS-3.3
Part Number LM3940ISX-3.3 LM3940IT-3.3 LM3940IMPX-3.3 LM3940IS-3.3
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Number of Regulators 1 1 1 1
Operating Temperature -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C
Current - Output 1A 1A 1A 1A
Base Product Number LM3940 LM3940 LM3940 LM3940
Output Type Fixed Fixed Fixed Fixed
Package / Case TO-263-4, D²Pak (3 Leads + Tab), TO-263AA TO-220-3 TO-261-4, TO-261AA TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Package Tape & Reel (TR) Tube Tape & Reel (TR) Tube
Voltage - Output (Min/Fixed) 3.3V 3.3V 3.3V 3.3V
Control Features - - - -
Output Configuration Positive Positive Positive Positive
PSRR - - - -
Voltage Dropout (Max) 0.2V @ 100mA 0.2V @ 100mA 0.2V @ 100mA 0.2V @ 100mA
Voltage - Output (Max) - - - -
Supplier Device Package DDPAK/TO-263-3 TO-220-3 SOT-223-4 DDPAK/TO-263-3
Protection Features Over Temperature, Short Circuit Over Temperature, Short Circuit Over Temperature, Short Circuit Over Temperature, Short Circuit
Voltage - Input (Max) 7.5V 7.5V 7.5V 7.5V
Mounting Type Surface Mount Through Hole Surface Mount Surface Mount
Series - - - -

LM3940ISX-3.3 Datasheet PDF

Download LM3940ISX-3.3 pdf datasheets and Texas Instruments documentation for LM3940ISX-3.3 - Texas Instruments.

PCN Assembly/Origin
2.73KHz.pdf

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.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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Texas Instruments

LM3940ISX-3.3

Texas Instruments
32D-LM3940ISX-3.3

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