Data Sheet

LT3077

analog.com

Rev. 0

2 of 38

TABLE OF CONTENTS

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

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

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

Simplified Application Diagram................................................................................................................................................................1

Specifications.............................................................................................................................................................................................4

Absolute Maximum Ratings ......................................................................................................................................................................9

Thermal Resistance.............................................................................................................................................................................10

Electrostatic Discharge (ESD).............................................................................................................................................................10

ESD Ratings..........................................................................................................................................................................................10

ESD Caution.........................................................................................................................................................................................10

Pin Configurations and Function Descriptions......................................................................................................................................11

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

Functional Diagram .................................................................................................................................................................................24

Applications Information ........................................................................................................................................................................24

Output Voltage ....................................................................................................................................................................................24

REF – Voltage Reference .....................................................................................................................................................................26

Overdriving the REF Pin ......................................................................................................................................................................26

Enable Function – Turning ON and OFF.............................................................................................................................................27

BIAS Undervoltage Lockout................................................................................................................................................................28

Power Good .........................................................................................................................................................................................28

Stability and Output Capacitance......................................................................................................................................................28

Stability and Input Capacitance.........................................................................................................................................................29

BIAS/BIASF Pin Requirements............................................................................................................................................................30

Load Regulation ..................................................................................................................................................................................30

PCB Layout Considerations................................................................................................................................................................30

Protection Features ............................................................................................................................................................................30

Externally Programmable Current Limit ...........................................................................................................................................30

Thermal Considerations .....................................................................................................................................................................31

Calculating Junction Temperature....................................................................................................................................................31

Paralleling Devices for Higher Output Current..................................................................................................................................31

Output Noise .......................................................................................................................................................................................32

Filtering High Frequency Spikes.........................................................................................................................................................32

Fast Start-Up........................................................................................................................................................................................32

Typical Application Circuits ....................................................................................................................................................................33

A N A L O G D E V I C E S

C O N F I D E N T I A L