Data Sheet

LTM8060F

analog.com

Rev. A

3 of 44

TABLE OF CONTENTS

Features......................................................................................................................................................................................................1

Applications ...............................................................................................................................................................................................1

General Description...................................................................................................................................................................................1

Typical Application....................................................................................................................................................................................2

Specifications.............................................................................................................................................................................................5

Absolute Maximum Ratings ......................................................................................................................................................................7

Thermal Resistance ...................................................................................................................................................................................8

Electrostatic Discharge (ESD)...............................................................................................................................................................8

ESD Ratings............................................................................................................................................................................................8

ESD Caution...........................................................................................................................................................................................8

Pin Configurations and Function Descriptions........................................................................................................................................9

Pin Descriptions ....................................................................................................................................................................................9

Typical Performance Characteristics .....................................................................................................................................................13

Theory of Operation ................................................................................................................................................................................21

LTM8060F Overview ............................................................................................................................................................................21

Applications Information ........................................................................................................................................................................23

Set Output Voltage..............................................................................................................................................................................23

Capacitor Selection Considerations ..................................................................................................................................................23

Frequency Selection ...........................................................................................................................................................................24

Operating Frequency Trade-Offs .......................................................................................................................................................24

BIASn Pin Considerations ...................................................................................................................................................................25

Maximum Load....................................................................................................................................................................................25

Power Derating....................................................................................................................................................................................26

Load Sharing .......................................................................................................................................................................................29

Burst Mode Operation.........................................................................................................................................................................29

Minimum Input Voltage ......................................................................................................................................................................29

Output Voltage Tracking and Soft Start ............................................................................................................................................29

Prebiased Output................................................................................................................................................................................30

Frequency Foldback............................................................................................................................................................................30

Synchronization ..................................................................................................................................................................................30

Shorted Input Protection....................................................................................................................................................................30

PCB Layout ..........................................................................................................................................................................................31

Hot-Plugging Safely ............................................................................................................................................................................32

Thermal Considerations .....................................................................................................................................................................32