SNVS121E
May 1996 – May 2019
LM2586
PRODUCTION DATA.
1
Features
2
Typical Applications
3
Description
Device Images
Block Diagram
4
Revision History
5
Pin Configurations
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Ratings
6.4
Thermal Information
6.5
Electrical Characteristics: 3.3 V
6.6
Electrical Characteristics: 5 V
6.7
Electrical Characteristics: 12 V
6.8
Electrical Characteristics: Adjustable
6.9
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Flyback Regulator Operation
7.3.2
Step-Up (Boost) Regulator Operation
7.3.3
Programming Output Voltage (Selecting R1 And R2)
7.3.4
Shutdown Control
7.3.5
Frequency Adjustment
7.3.6
Frequency Synchronization
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Typical Flyback Regulator Applications
8.2.1.1
Design Requirements
8.2.1.1.1
Transformer Selection (T)
8.2.1.1.2
Transformer Footprints
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Custom Design With WEBENCH® Tools
8.2.1.2.2
Flyback Regulator Input Capacitors
8.2.1.2.3
Switch Voltage Limits
8.2.1.2.4
Output Voltage Limitations
8.2.1.2.5
Noisy Input Line Condition
8.2.1.2.6
Stability
8.2.2
Typical Boost Regulator Applications
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.3
System Examples
8.3.1
Test Circuits
9
Layout
9.1
Layout Guidelines
9.2
Layout Example
10
Heat Sink/Thermal Considerations
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.1.2
Development Support
11.1.2.1
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
Package Options
Mechanical Data (Package|Pins)
KTW|7
MPSF015
NDZ|7
MMSF005
Thermal pad, mechanical data (Package|Pins)
KTW|7
PPTD278
Orderable Information
snvs121e_oa
snvs121e_pm
8.3
System Examples