SNVS011H June   1999  – September 2015 LM3480

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics: LM3480-3.3, LM3480-5
    6. 6.6 Electrical Characteristics: LM3480-12, LM3480-15
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 3.3-V, 5-V, 12-V, and 15-V Versions Available
      2. 7.3.2 1.2-V Ensured Maximum Dropout
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operation with VIN = 5 V
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 External Capacitors
          1. 8.2.2.1.1 Output Capacitor
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Community Resources
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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7 Detailed Description

7.1 Overview

The LM3480 is an integrated linear voltage regulator with inputs that can be as high as 30 V. It ensures a maximum dropout of 1.2 V at the full load of 100 mA. The LM3480 has different output options including 3.3-V, 5-V, 12-V, and 15-V outputs, making LM3480 the tiny alternative to industry standard LM78Lxx series and similar devices.

7.2 Functional Block Diagram

LM3480 FBD_LM3480.gif

7.3 Feature Description

7.3.1 3.3-V, 5-V, 12-V, and 15-V Versions Available

The 3.3-V, 5-V, 12-V, and 15-V versions of LM3480 series are intended as tiny alternatives to industry standard LM78Lxx series and similar devices.

7.3.2 1.2-V Ensured Maximum Dropout

The 1.2-V quasi-low dropout of the LM3480 series devices make them a nice fit in many application where the 2-V to 2.5-V dropout of LM78Lxx series devices precludes their use.

7.4 Device Functional Modes

7.4.1 Operation with VIN = 5 V

The 3.3-V member of LM3480 can operate with an input of 5 V ±5%, its tiny SOT-23 package and quasi-low dropout makes it suitable for providing a very tiny, 3.3-V, 100-mA bias supply from 5-V power supply.