SLUSC05D July   2014  – May 2016 UCC28880

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
    6. 6.6 Switching Characteristics
    7. 6.7 Typical CharacteristicsTypical Characteristics graphs 1 through 7.
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Startup Operation
      2. 7.4.2 Feedback and Voltage Control Loop
      3. 7.4.3 PWM Controller
      4. 7.4.4 Current Limit
      5. 7.4.5 Inductor Current Runaway Protection
      6. 7.4.6 Thermal Shutdown Over-Temperature Protection section to Thermal Shutdown section.
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 12-V, 100-mA Low-Side Buck Converter
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Custom Design with WEBENCH Tools
          2. 8.2.1.2.2 Input Stage (RF, D2, D3, C1, C2, L2)
          3. 8.2.1.2.3 Regulator Capacitor (CVDD)
          4. 8.2.1.2.4 Freewheeling Diode (D1)Freewheeling Diode (D1) section.
          5. 8.2.1.2.5 Output Capacitor (CL)
          6. 8.2.1.2.6 Load Resistor (RL)
          7. 8.2.1.2.7 Inductor (L1)
          8. 8.2.1.2.8 Feedback Path (Q1, RFB1, RFB2)
        3. 8.2.1.3 Application Curves
      2. 8.2.2 12-V, 100-mA, High-Side Buck Converter
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Introduction
          2. 8.2.2.2.2 Feedback Path (CFB, RFB1 and RFB2) and Load Resistor (RL)
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Additional UCC28880 Application Topologies
        1. 8.2.3.1 Low-Side Buck and LED Driver - Direct Feedback (Level Shifted)
        2. 8.2.3.2 12-V, 100-mA High-Side Buck Converter
        3. 8.2.3.3 Non-Isolated, Low-Side Buck-Boost Converter
        4. 8.2.3.4 Non-Isolated, High-Side Buck-Boost Converter
        5. 8.2.3.5 Non-Isolated Flyback Converter
        6. 8.2.3.6 Isolated Flyback Converter
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines Layout Guidelines section.
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Custom Design with WEBENCH Tools
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

4 Revision History

Changes from C Revision (January 2016) to D Revision

  • Changed HVIN off state current's MAX value from 12 µA to 36 µA. Go
  • Changed Equation 2 .Go

Changes from B Revision (September 2015) to C Revision

Changes from A Revision (October 2014) to B Revision

  • Added Thermal Shutdown feature.Go
  • Changed Applications features. Go
  • Changed Power vs Input Voltage image.Go
  • Changed TJ specification and added note 4, 5 and 6. Go
  • Added IVDD ratings. Go
  • Added HVIN pin exclusion. Go
  • Added VDD clamp voltage specification. Go
  • Changed Maximum switch on/off time specification. Go
  • Added inductor current run away protection time threshold specification. Go
  • Added RTHJA vs Copper Area image. Go
  • Changed Feature Description section. Go
  • Changed PWM Controller section. Go
  • Added Current Limit details.Go
  • Changed Figure 15Go
  • Changed Equation 1Go
  • Changed Over-Temperature Protection section to Thermal Shutdown section.Go
  • Changed Universal Input, 12-V, 100-mA Output Low-Side Buck image.Go
  • Changed Equation 2.Go
  • Changed Go
  • Changed Freewheeling Diode (D1) section. Go
  • Changed Equation 5.Go
  • Changed Equation 7..Go
  • Changed Equation 9.Go
  • Changed Equation 10.Go
  • Changed Equation 12.Go
  • Changed Equation 14.Go
  • Changed Equation 17.Go
  • Changed Low-Side Buck-Boost Converter image. Go
  • Changed Layout Guidelines section.Go

Changes from * Revision (August, 2014) to A Revision

  • Added Pin Configuration and Functions section, ESD table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. Go
  • Changed Simplified Schematic drawing.Go
  • Changed Typical Characteristics graphs 1 through 7. Go
  • Changed Equation 2Go