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

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

8.1 Application Information

The LM3480 is a linear voltage regulator with 1.2-V ensured maximum dropout and 100-mA ensured minimum load current. This device has 3.3-V, 5-V, 12-V, and 15-V versions. The implementation of LM3480 is discussed in this section.

8.2 Typical Application

LM3480 typapp_snvs011.gif

8.2.1 Design Requirements

DESIGN PARAMETER EXAMPLE VALUE
Input voltage 6.5 V
Output voltage 5 V
Output current 100 mA

8.2.2 Detailed Design Procedure

8.2.2.1 External Capacitors

A minimum input and output capacitance value of 0.1 µF is required for stability and adequate transient performance. There is no specific ESR limitation, although excessively high ESR will compromise transient performance. There is no specific limitation on a maximum capacitance value on the input or the output.

8.2.2.1.1 Output Capacitor

The minimum output capacitance required to maintain stability is 0.1 µF. Larger values of output capacitance can be used to improve transient behavior.

8.2.3 Application Curves

Unless indicated otherwise, VIN = 6.5 V, VOUT = 5 V, COUT = 0.1 µF, and TA = 25°C

LM3480 10007003.png Figure 18. Line Transient Response
LM3480 10007005.png Figure 20. Load Transient Response
LM3480 10007007.png Figure 22. Load Transient Response
LM3480 10007004.png Figure 19. Line Transient Response
LM3480 10007006.png Figure 21. Load Transient Response
LM3480 10007008.png Figure 23. Load Transient Response