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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsLM2678T-3.3
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LM2678T-3.3 - Texas Instruments

Manufacturer Part Number
LM2678T-3.3
Manufacturer
Texas Instruments
Allelco Part Number
32D-LM2678T-3.3
ECAD Model
Parts Description
IC REG BUCK 3.3V 5A TO220-7
Detailed Description
Package
TO-220-7 Formed Leads
Data sheet
LM2678T-3.3.pdf
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In stock: 8510

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Specifications

LM2678T-3.3 Tech Specifications
Texas Instruments - LM2678T-3.3 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - LM2678T-3.3

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Output (Min/Fixed) 3.3V  
Voltage - Output (Max) -  
Voltage - Input (Min) 8V  
Voltage - Input (Max) 40V  
Topology Buck  
Synchronous Rectifier No  
Supplier Device Package TO-220-7  
Series SIMPLE SWITCHER®  
Package / Case TO-220-7 Formed Leads  
Product Attribute Attribute Value  
Package Tube  
Output Type Fixed  
Output Configuration Positive  
Operating Temperature -40°C ~ 125°C (TJ)  
Number of Outputs 1  
Mounting Type Through Hole  
Function Step-Down  
Frequency - Switching 260kHz  
Current - Output 5A  
Base Product Number LM2678  

Parts Introduction

Manufacturer Part Number

LM2678T-3.3

Manufacturer

Texas Instruments

Introduction

LM2678T-3.3 is a 5A step-down voltage regulator integrated circuit

Product Features and Performance

Step-Down (Buck) Regulator

Output Type Fixed at 3.3V

Single Output Channel

260kHz Switching Frequency

Through Hole Mounting Type

TO-220-7 Formed Leads Package

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

Product Advantages

High Efficiency Power Conversion

Reliable Performance in Wide Temperature Range

Simple Design with Minimal External Components

Robust Construction in TO-220 Package

Key Technical Parameters

Input Voltage Range 8V to 40V

Output Voltage Fixed at 3.3V

5A Output Current Capability

Non-Synchronous Rectifier

Frequency Switching at 260kHz

Quality and Safety Features

Built-In Thermal Shutdown

Overcurrent Protection

Short Circuit Protection

Compatibility

Compatible with various input sources within voltage range

Suitable for use in a wide range of electronic devices

Application Areas

High-Efficiency Power Supplies

Computer Peripherals

Networking Systems

Industrial Controls

Product Lifecycle

Obsolete - Check for replacement parts or newer alternatives

Limited Availability - Replacement or Upgrade Advised

Several Key Reasons to Choose This Product

Proven SIMPLE SWITCHER® Performance

Wide Input Voltage Range Accommodates Various Power Sources

High Output Current for a Variety of Applications

Simple and Economical Solution with Few External Components Needed

Industry-Standard TO-220 Package for Easy Integration

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments LM2678T-3.3

Product Attribute LM2678T-3.3 LM2679S-3.3 LM2679S-12 LM2678T-12
Part Number LM2678T-3.3 LM2679S-3.3 LM2679S-12 LM2678T-12
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Series SIMPLE SWITCHER® SIMPLE SWITCHER® SIMPLE SWITCHER® SIMPLE SWITCHER®
Supplier Device Package TO-220-7 DDPAK/TO-263-7 DDPAK/TO-263-7 TO-220-7
Package / Case TO-220-7 Formed Leads TO-263-8, D²Pak (7 Leads + Tab), TO-263CA TO-263-8, D²Pak (7 Leads + Tab), TO-263CA TO-220-7 Formed Leads
Voltage - Output (Min/Fixed) 3.3V 3.3V 12V 12V
Output Type Fixed Fixed Fixed Fixed
Mounting Type Through Hole Surface Mount Surface Mount Through Hole
Current - Output 5A 5A 5A 5A
Package Tube Tube Tube Tube
Frequency - Switching 260kHz 260kHz 260kHz 260kHz
Voltage - Input (Min) 8V 8V 8V 15V
Voltage - Output (Max) - - - -
Function Step-Down Step-Down Step-Down Step-Down
Output Configuration Positive Positive Positive Positive
Number of Outputs 1 1 1 1
Topology Buck Buck Buck Buck
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Base Product Number LM2678 LM2679 LM2679 LM2678
Synchronous Rectifier No No No No
Voltage - Input (Max) 40V 40V 40V 40V

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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.

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Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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LM2678T-3.3 Image

LM2678T-3.3

Texas Instruments
32D-LM2678T-3.3

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