Data Sheet

LTM4719

analog.com

Rev. 0

2 of 53

TABLE OF CONTENTS

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

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

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

Typical ApplicaTion ...................................................................................................................................................................................1

Revision History .........................................................................................................................................................................................4

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

Timing Diagram...................................................................................................................................................................................13

Absolute Maximum Ratings ....................................................................................................................................................................14

Thermal Resistance.............................................................................................................................................................................15

Electrostatic Discharge (ESD).............................................................................................................................................................15

ESD Ratings..........................................................................................................................................................................................15

ESD Caution.........................................................................................................................................................................................15

Pin Configuration and Function Descriptions .......................................................................................................................................16

Pin Configuration ................................................................................................................................................................................16

Pin Functions.......................................................................................................................................................................................17

Pin Configuration Description............................................................................................................................................................21

Typical Performance Characteristics .....................................................................................................................................................22

Theory of Operation ................................................................................................................................................................................24

Block Diagram .....................................................................................................................................................................................24

PowerPath Operation .........................................................................................................................................................................25

Buck Converter Operation..................................................................................................................................................................26

VIN1, VIN2 UVLO Thresholds...............................................................................................................................................................27

Switching Frequency ......................................................................................................................................................................27

External Synchronization Clock Frequency ..................................................................................................................................27

Bus Voltage......................................................................................................................................................................................28

Bus Capacitor..................................................................................................................................................................................28

Feedforward Capacitor ..................................................................................................................................................................28

Feedforward Resistor..........................................................................................................................................................................29

Open-Drain Outputs .......................................................................................................................................................................29

Logic Inputs.....................................................................................................................................................................................29

Important Usage Notes ..................................................................................................................................................................29

Linear Regulator Operation................................................................................................................................................................29

Output Voltage................................................................................................................................................................................30

Battery Health Monitor .......................................................................................................................................................................30