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LM22678/-Q1 42-V, 5-A SIMPLE SWITCHER® Step-Down Voltage Regulator With Easy-to-Use Package
SNVS585M
September 2008 – October 2020
LM22678
,
LM22678-Q1
PRODUCTION DATA
CONTENTS
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LM22678/-Q1 42-V, 5-A SIMPLE SWITCHER® Step-Down Voltage Regulator With Easy-to-Use Package
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
Handling Ratings: LM22678
6.3
Handling Ratings: LM22678-Q1
6.4
Recommended Operating Conditions
6.5
Thermal Information
6.6
Electrical Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Precision Enable and UVLO
7.3.2
Soft Start
7.3.3
Bootstrap Supply
7.3.4
Internal Loop Compensation
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Active Mode
7.4.3
Current Limit
7.4.4
Thermal Protection
7.4.5
Duty-Cycle Limits
8
Application and Implementation
8.1
Application Information
8.1.1
Output Voltage Divider Selection
8.1.2
Power Diode
8.2
Typical Applications
8.2.1
Typical Buck Regulator Application
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
External Components
8.2.1.2.1.1
Inductor
8.2.1.2.2
Input Capacitor
8.2.1.2.3
Output Capacitor
8.2.1.2.4
Bootstrap Capacitor
8.2.1.3
Application Curves
9
Layout
9.1
Layout Guidelines
9.2
Layout Example
9.3
Thermal Considerations
10
Device and Documentation Support
10.1
Documentation Support
10.1.1
Related Documentation
10.2
Support Resources
10.3
Receiving Notification of Documentation Updates
10.4
Electrostatic Discharge Caution
10.5
Glossary
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
NDR|7
MMSF023A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snvs585m_oa
snvs585m_pm
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