JAJSMY4 September   2021 UCC14240-Q1

ADVANCE INFORMATION  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  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 Power Ratings
    6. 6.6 Insulation Specifications
    7. 6.7 Electrical Characteristics
    8. 6.8 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 Power Stage Operation
      2. 7.3.2 Digital I/O ENA and /PG
      3. 7.3.3 Power-Up and Power-Down Sequencing
    4. 7.4 Device Functional Modes
  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 RLIM Resistor Selection
        2. 8.2.2.2 Capacitor Selection
    3. 8.3 System Examples
  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 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 サポート・リソース
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 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）
  • DWN|36
サーマルパッド・メカニカル・データ
発注情報

7.3.2 Digital I/O ENA and /PG

The ENA input pin and /PG output pin on the primary-side use 5-V TTL and 3.3-V LVTTL level logic thresholds.

The active-high enable input (ENA) pin is used to turn-on the isolated DC/DC converter of the module. Either 3.3-V or 5-V logic rails can be used. Maintain the ENA pin voltage below 5.5 V.

The active-low powergood (/PG) pin is an open-drain output that indicates (low) when the module has no fault and the output voltages are within ±10% of the output voltage regulation setpoints. Connect a pull-up resistor (> 1 kΏ) from /PG pin to either a 5-V or 3.3-V logic rail. Maintain the /PG pin voltage below 5.5 V.