SLVS059T June   1976  – January 2015

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics — uA78M33C
    6. 7.6  Electrical Characteristics — uA78M33I
    7. 7.7  Electrical Characteristics — uA78M05C
    8. 7.8  Electrical Characteristics — uA78M05I
    9. 7.9  Electrical Characteristics — uA78M06C
    10. 7.10 Electrical Characteristics — uA78M08C
    11. 7.11 Electrical Characteristics — uA78M09C
    12. 7.12 Electrical Characteristics — uA78M10C
    13. 7.13 Electrical Characteristics — uA78M12C
    14. 7.14 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 Fixed-Output Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • KVU|3
  • DCY|4
  • KCS|3
散热焊盘机械数据 (封装 | 引脚)
订购信息

9 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.

9.1 Application Information

The UA78Mxx devices are ideal for use as linear regulators with few external components needed for a working design. They are also useful for attenuating power supply noise.

9.2 Typical Application

ua78mxx_schem.gifFigure 2. Fixed-Output Regulator

9.2.1 Design Requirements

An 0.33-µF decoupling capacitor on the input and a 0.1-µF decoupling capacitor on the output are recommended for the UA78Mxx to behave as close to datasheet specifications as possible.

9.2.2 Detailed Design Procedure

The customer's end application will determine how the schematic for UA78Mxx is designed. For example, if there is a load connected to a negative voltage as its ground, a clamp diode may be necessary on the output. In the event of an input short circuit or another case where the output voltage can be higher than the input, a diode shunt can be connected across the device with the anode at the output and cathode at the input

9.2.3 Application Curves

ua78m05_dropout_v.gifFigure 3. V_OUTPUT vs V_INPUT for
IOUTPUT = 5 mA and 500 mA (25°C)