LM5180
SNVSB06D – JULY 2018 – REVISED MAY 2020
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Typical Characteristics .............................................. 7
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 16
9 Application and Implementation ........................ 17
9.1 Application Information............................................ 17
9.2 Typical Applications ................................................ 17
10 Power Supply Recommendations ..................... 35
11 Layout................................................................... 36
11.1 Layout Guidelines ................................................. 36
11.2 Layout Examples................................................... 37
12 Device and Documentation Support ................. 38
12.1 Device Support...................................................... 38
12.2 Documentation Support ........................................ 39
12.3 Receiving Notification of Documentation Updates 39
12.4 Support Resources ............................................... 39
12.5 Trademarks ........................................................... 39
12.6 Electrostatic Discharge Caution ............................ 40
12.7 Glossary ................................................................ 40
13 Mechanical, Packaging, and Orderable
Information ........................................................... 40
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (April 2019) to Revision D
Page
• Added EMI bullet in Features ................................................................................................................................................. 1
• Added magnetic components in Table 3 ............................................................................................................................. 18
• Added expressions for UVLO turn-on/off voltage thresholds in Typical Applications .......................................................... 21
• Updated Layout Examples .................................................................................................................................................. 37
• Added PSR flyback converter family in Device and Documentation Support ...................................................................... 38
• Updated Documentation Support ......................................................................................................................................... 39
Changes from Revision B (February 2019) to Revision C
Page
• Changed EC table specs for current limit............................................................................................................................... 5
• Added note about failsafe current limit ................................................................................................................................. 15
Changes from Revision A (August 2018) to Revision B
Page
• Changed Vin-max to 65 V ...................................................................................................................................................... 1
• Added CISPR 25 class 5 EMI plots...................................................................................................................................... 23
Changes from Original (July 2018) to Revision A
Page
• Updated Features list; added an Application ......................................................................................................................... 3
• Deleted soft-start capacitor in Figure 23, Figure 38, and Figure 51 .................................................................................... 17
• Updated transformer part number in Table 2 ...................................................................................................................... 18
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