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LM2673S-3.3 The Texas Instruments LM2673S-3.3 is a 3A SIMPLE SWITCHER® buck converter. It operates with an input voltage range of 8V to 40V and provides a fixed 3.3V output.
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LM2673S-3.3

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LM2673S-3.3 is a 3A SIMPLE SWITCHER® buck converter. It operates with an input voltage range of 8V to 40V and provides a fixed 3.3V output.
✓ Total Stock: 45 pcs
$ Price Range: $0.16

LM2673S-3.3 Available from 1 distributor

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LM2673S-3.3 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Duty Cycle
Efficiency
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Current
Output Type
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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LM2673S-3.3 Description

Short technical summary and product information.

The Texas Instruments LM2673S-3.3 is a 3A step-down (buck) voltage regulator featuring a voltage-mode control and a fixed 260kHz internal oscillator. It is designed for simple and easy implementation using off-the-shelf external components.

 

This device offers a wide input voltage range from 8V to 40V, supporting adjustable output voltages from 1.23V to 37V, with a fixed 3.3V version available. Key electrical specifications include a maximum output current of 3A, a typical quiescent current of 4.2mA, and a maximum duty cycle of 91%. The regulator boasts high efficiency, up to 94%, and features like soft-start capability and resistor-programmable peak current limit over a range of 2A to 5A.

 

The LM2673S-3.3 is available in a TO-263-8, D²Pak (7 Leads + Tab), TO-263CA package, suitable for surface mount applications. It operates within a junction temperature range of -40°C to 125°C. The component includes features such as enable and overcurrent protection.

 

This buck converter is designed for various power management applications where a simple, efficient, and reliable step-down voltage conversion is required. Its adjustable current limit and wide input voltage range make it versatile for different design needs.

LM2673S-3.3 Quick Information

Product Type: DC DC Switching Regulator
Series: SIMPLE SWITCHER
Canonical Name: LM2673S-3.3 SIMPLE SWITCHER® 3-A Step-Down Voltage Regulator
Subcategory: Buck Converter

LM2673S-3.3 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LM2673S-3.3 Estimated Pricing

Qty Low High
1+ $0.16 $0.16

Estimated market price range - modelled values for guidance only, not live distributor offers.

LM2673S-3.3 Features

  • 3A SIMPLE SWITCHER® buck converter.
  • Wide 8V to 40V input voltage range.
  • Adjustable or fixed 3.3V output.
  • Up to 94% efficiency.
  • Surface mount TO-263 package.

LM2673S-3.3 Applications

  • Used in industrial power supply designs
  • Suited for battery-powered systems
  • Suitable for distributed power regulation
  • Common in telecommunications equipment
  • Applied in automotive electronics

LM2673S-3.3 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LM2673S-3.3?

8V to 40V

What package is the LM2673S-3.3 available in?

TO-263-8, D²Pak (7 Leads + Tab), TO-263CA; surface mount

What is the operating temperature range?

-40°C to 125°C junction temperature

What is the maximum output current?

3A

What is the switching frequency?

260kHz

What is the output voltage range?

1.23V to 37V

What is the efficiency?

Up to 94%

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