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

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

2

Contents

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© 2011, Texas Instruments Incorporated