SNVS961E APRIL   2013  – January 2016 LM5023

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 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 Detailed Pin Description
        1. 7.3.1.1 QR Pin
        2. 7.3.1.2 VSD Pin
        3. 7.3.1.3 SS Pin
        4. 7.3.1.4 COMP Pin
        5. 7.3.1.5 CS Pin
        6. 7.3.1.6 GND Pin
        7. 7.3.1.7 OUT Pin
        8. 7.3.1.8 VCC Pin
      2. 7.3.2 Start-Up
      3. 7.3.3 Quasi-Resonant Operation
      4. 7.3.4 Quasi-Resonant Operating Frequency
      5. 7.3.5 PWM Comparator
      6. 7.3.6 Soft-Start
      7. 7.3.7 Gate Driver
        1. 7.3.7.1 Skip-Cycle Operation
      8. 7.3.8 Current Limit and Current Sense
    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 Custom Design with WEBENCH Tools
        2. 8.2.2.2 Line Current-Limit Feedforward
          1. 8.2.2.2.1 Overvoltage Protection
        3. 8.2.2.3 Valley Switching
        4. 8.2.2.4 Hiccup Mode
      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 Custom Design with WEBENCH Tools
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

9 Power Supply Recommendations

The LM5023 device is intended for AC-to-DC adapters and power supplies with input voltage range of 85 VAC(rms) to 265 VAC(rms) using the flyback topology. It can also be used in other applications and convertor topologies with different input voltages. Be sure that all voltages and currents are within the recommended operating conditions and absolute maximum ratings of the device.