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LM5023 AC-DC Quasi-Resonant Current Mode PWM Controller
SNVS961E
APRIL 2013 – January 2016
LM5023
PRODUCTION DATA.
CONTENTS
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LM5023 AC-DC Quasi-Resonant Current Mode PWM Controller
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Detailed Pin Description
7.3.1.1
QR Pin
7.3.1.2
VSD Pin
7.3.1.3
SS Pin
7.3.1.4
COMP Pin
7.3.1.5
CS Pin
7.3.1.6
GND Pin
7.3.1.7
OUT Pin
7.3.1.8
VCC Pin
7.3.2
Start-Up
7.3.3
Quasi-Resonant Operation
7.3.4
Quasi-Resonant Operating Frequency
7.3.5
PWM Comparator
7.3.6
Soft-Start
7.3.7
Gate Driver
7.3.7.1
Skip-Cycle Operation
7.3.8
Current Limit and Current Sense
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design with WEBENCH Tools
8.2.2.2
Line Current-Limit Feedforward
8.2.2.2.1
Overvoltage Protection
8.2.2.3
Valley Switching
8.2.2.4
Hiccup Mode
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Custom Design with WEBENCH Tools
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DGK|8
MPDS028E
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snvs961e_oa
snvs961e_pm
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