Datasheet
LTC3577/LTC3577-1
2
3577fa
TABLE OF CONTENTS
Features ............................................................................................................................ 1
Applications ....................................................................................................................... 1
Typical Application ............................................................................................................... 1
Description......................................................................................................................... 1
Absolute Maximum Ratings ..................................................................................................... 3
Order Information ................................................................................................................. 3
Pin Confi guration ................................................................................................................. 3
Electrical Characteristics ........................................................................................................ 4
Typical Performance Characteristics .........................................................................................10
Pin Functions .....................................................................................................................16
Block Diagram ....................................................................................................................19
PowerPath Operation ............................................................................................................................................ 20
Low Dropout Linear Regulator Operation ............................................................................................................. 30
Step-Down Switching Regulator Operation ........................................................................................................... 31
LED Backlight/Boost Operation ............................................................................................................................. 35
I
2
C Operation ........................................................................................................................................................ 38
Pushbutton Interface Operation ............................................................................................................................ 43
Layout and Thermal Considerations ..................................................................................................................... 48
Typical Applications .............................................................................................................50
Package Description ............................................................................................................52
Related Parts .....................................................................................................................53
Revision History .................................................................................................................54