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LM5002 Wide Input Voltage Switch Mode Regulator
SNVS496F
January 2007 – May 2021
LM5002
PRODUCTION DATA
CONTENTS
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LM5002 Wide Input Voltage Switch Mode Regulator
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
High Voltage VCC Regulator
7.3.2
Oscillator
7.3.3
External Synchronization
7.3.4
Enable and Standby
7.3.5
Error Amplifier and PWM Comparator
7.3.6
Current Amplifier and Slope Compensation
7.3.7
Power MOSFET
7.4
Device Functional Modes
7.4.1
Thermal Protection
8
Application and Implementation
8.1
Application Information
8.1.1
VIN
8.1.2
SW PIN
8.1.3
EN or UVLO Voltage Divider Selection
8.1.4
Soft Start
8.2
Typical Applications
8.2.1
Non-Isolated Flyback Regulator
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Switching Frequency
8.2.1.2.2
Flyback Transformer
8.2.1.2.3
Peak MOSFET Current
8.2.1.2.4
Output Capacitance
8.2.1.2.5
Output Diode Rating
8.2.1.2.6
Power Stage Analysis
8.2.1.2.7
Loop Compensation
8.2.2
Isolated Flyback Regulator
8.2.2.1
Design Requirements
8.2.3
Boost Regulator
8.2.3.1
Design Requirements
8.2.4
24-V SEPIC Regulator
8.2.4.1
Design Requirements
8.2.5
12-V Automotive SEPIC Regulator
8.2.5.1
Design Requirements
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Receiving Notification of Documentation Updates
11.2
Support Resources
11.3
Trademarks
11.4
Electrostatic Discharge Caution
11.5
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
D|8
MSOI002K
NGT|8
MPDS406A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snvs496f_oa
snvs496f_pm
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