LTC3577-3 Datasheet, PDF (2/52 Pages) Linear Technology – Highly Integrated Portable Product PMIC

LTC3577-3/LTC3577-4
TABLE OF CONTENTS
FEATURES....................................................................................................................................................................1
APPLICATIONS ............................................................................................................................................................1
TYPICAL APPLICATION................................................................................................................................................1
DESCRIPTION ..............................................................................................................................................................1
ABSOLUTE MAXIMUM RATINGS .................................................................................................................................3
ORDER INFORMATION ................................................................................................................................................3
PIN CONFIGURATION ..................................................................................................................................................3
ELECTRICAL CHARACTERISTICS ................................................................................................................................4
TYPICAL PERFORMANCE CHARACTERISTICS ..........................................................................................................10
PIN FUNCTIONS.........................................................................................................................................................16
BLOCK DIAGRAM ......................................................................................................................................................19
OPERATION ...............................................................................................................................................................20
PowerPath OPERATION .........................................................................................................................................20
LOW DROPOUT LINEAR REGULATOR OPERATION...............................................................................................29
STEP-DOWN SWITCHING REGULATOR OPERATION ............................................................................................30
LED BACKLIGHT/BOOST OPERATION ...................................................................................................................34
I²C OPERATION .....................................................................................................................................................37
PUSHBUTTON INTERFACE OPERATION ................................................................................................................43
LAYOUT AND THERMAL CONSIDERATIONS .........................................................................................................47
TYPICAL APPLICATION..............................................................................................................................................49
PACKAGE DESCRIPTION............................................................................................................................................51
RELATED PARTS........................................................................................................................................................52
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