Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - power management - special purpose 39 µA QFN 32 (4x4)

TPS65735

SLVSAI6–JUNE 2011

www.ti.com

Contents

1 INTRODUCTION .................................................................................................................. 5

1.1 Features ...................................................................................................................... 5

1.2 Description ................................................................................................................... 5

1.3 Pin Descriptions ............................................................................................................. 6

1.4 Package Pin Assignments ................................................................................................. 7

2 POWER MANAGEMENT CORE .............................................................................................. 8

2.1 Recommended Operating Conditions .................................................................................... 8

2.2 Absolute Maximum Ratings ................................................................................................ 8

2.3 Thermal Information ........................................................................................................ 9

2.4 Quiescent Current ........................................................................................................... 9

2.5 Electrical Characteristics ................................................................................................... 9

2.6 System Operation ......................................................................................................... 13

2.6.1 System Power Up .............................................................................................. 13

2.6.2 System Operation Using Push Button Switch .............................................................. 14

2.6.3 System Operation Using Slider Switch ...................................................................... 15

2.7 Linear Charger Operation ................................................................................................ 16

2.7.1 Battery and TS Detection ...................................................................................... 16

2.7.2 Battery Charging ................................................................................................ 16

2.7.2.1 Pre-charge .......................................................................................... 17

2.7.2.2 Charge Termination ................................................................................ 17

2.7.2.3 Recharge ............................................................................................ 17

2.7.2.4 Charge Timers ...................................................................................... 17

2.7.3 Charger Status (nCHG_STAT Pin) ........................................................................... 18

2.8 LDO Operation ............................................................................................................. 18

2.8.1 LDO Internal Current Limit .................................................................................... 18

2.9 Boost Converter Operation ............................................................................................... 19

2.9.1 Boost Thermal Shutdown ...................................................................................... 19

2.9.2 Boost Load Disconnect ........................................................................................ 20

2.10 Full H-Bridge Analog Switches .......................................................................................... 20

2.10.1 H-Bridge Switch Control ....................................................................................... 20

2.11 Power Management Core Control ....................................................................................... 22

2.11.1 SLEEP / Power Control Pin Function ........................................................................ 22

2.11.2 COMP Pin Functionality ....................................................................................... 22

2.11.3 SW_SEL Pin Functionality .................................................................................... 23

2.11.4 SWITCH Pin ..................................................................................................... 23

2.11.5 Slider Switch Behavior ......................................................................................... 23

2.11.6 Push-Button Switch Behavior ................................................................................. 24

3 APPLICATION INFORMATION ............................................................................................. 26

3.1 Applications Schematic ................................................................................................... 26

3.2 Reducing System Quiescent Current (I

) .............................................................................. 26

3.3 Boost Converter Application Information ............................................................................... 27

3.3.1 Setting Boost Output Voltage ................................................................................. 27

3.3.2 Boost Inductor Selection ....................................................................................... 28

3.3.3 Boost Capacitor Selection ..................................................................................... 28

3.4 Bypassing Default Push-Button SWITCH Functionality .............................................................. 28