
SLVSAI6
– JUNE 2011
Contents
1
INTRODUCTION
.................................................................................................................. 5 1.1
Features
......................................................................................................................
51.2
Description
...................................................................................................................
51.3
Pin Descriptions
.............................................................................................................
61.4
Package Pin Assignments
.................................................................................................
72
POWER MANAGEMENT CORE
.............................................................................................. 8 2.1
Recommended Operating Conditions
....................................................................................
82.2
Absolute Maximum Ratings
................................................................................................
82.3
Thermal Information
........................................................................................................
92.4
Quiescent Current
...........................................................................................................
92.5
Electrical Characteristics
...................................................................................................
92.6
System Operation
.........................................................................................................
132.6.1
System Power Up
..............................................................................................
132.6.2
System Operation Using Push Button Switch
..............................................................
142.6.3
System Operation Using Slider Switch
......................................................................
152.7
Linear Charger Operation
................................................................................................
162.7.1
Battery and TS Detection
......................................................................................
162.7.2
Battery Charging
................................................................................................
162.7.2.1
Pre-charge
..........................................................................................
172.7.2.2
Charge Termination
................................................................................
172.7.2.3
Recharge
............................................................................................
172.7.2.4
Charge Timers
......................................................................................
172.7.3
Charger Status (nCHG_STAT Pin)
...........................................................................
182.8
LDO Operation
.............................................................................................................
182.8.1
LDO Internal Current Limit
....................................................................................
182.9
Boost Converter Operation
...............................................................................................
192.9.1
Boost Thermal Shutdown
......................................................................................
192.9.2
Boost Load Disconnect
........................................................................................
202.10
Full H-Bridge Analog Switches
..........................................................................................
202.10.1
H-Bridge Switch Control
.......................................................................................
202.11
Power Management Core Control
.......................................................................................
222.11.1
SLEEP / Power Control Pin Function
........................................................................
222.11.2
COMP Pin Functionality
.......................................................................................
222.11.3
SW_SEL Pin Functionality
....................................................................................
232.11.4
SWITCH Pin
.....................................................................................................
232.11.5
Slider Switch Behavior
.........................................................................................
232.11.6
Push-Button Switch Behavior
.................................................................................
243
APPLICATION INFORMATION
............................................................................................. 26 3.1
Applications Schematic
...................................................................................................
263.2
Reducing System Quiescent Current (IQ) .............................................................................. 26 3.3
Boost Converter Application Information
...............................................................................
273.3.1
Setting Boost Output Voltage
.................................................................................
273.3.2
Boost Inductor Selection
.......................................................................................
283.3.3
Boost Capacitor Selection
.....................................................................................
283.4
Bypassing Default Push-Button SWITCH Functionality
..............................................................
282
Contents
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2011, Texas Instruments Incorporated