Datasheet

ADP8861 Data Sheet
Rev. B | Page 2 of 40
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Typical Operating Circuit ................................................................ 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
I
2
C Timing Diagram .................................................................... 4
Absolute Maximum Ratings ............................................................ 5
Maximum Temperature Ranges ................................................. 5
Thermal Resistance ...................................................................... 5
ESD Caution .................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 7
Theory of Operation ...................................................................... 11
Power Stage.................................................................................. 12
Operating Modes ........................................................................ 13
Backlight Operating Levels ....................................................... 14
Backlight Maximum and Dim Settings ................................... 14
Automated Fade In and Fade Out ............................................ 14
Backlight Turn On/Turn Off/Dim ........................................... 15
Automatic Dim and Turn Off Timers ..................................... 15
Fade Override ............................................................................. 16
Independent Sink Control ........................................................ 16
Short-Circuit Protection Mode ................................................ 16
Overvoltage Protection .............................................................. 17
Thermal Shutdown/Overtemperature Protection ................. 17
Interrupts ..................................................................................... 17
Applications Information .............................................................. 19
Determining the Transition Point of the Charge Pump ....... 19
Layout Guidelines....................................................................... 19
Example Circuits ........................................................................ 20
I
2
C Programming and Digital Control ........................................ 21
Backlight Register Descriptions ............................................... 26
Independent Sink Register Descriptions ................................. 31
Outline Dimensions ....................................................................... 39
Ordering Guide .......................................................................... 40
REVISION HISTORY
4/12—Rev. A to Rev. B
Changes to Table 1 ............................................................................ 4
Updated Outline Dimensions ....................................................... 40
Changes to Ordering Guide .......................................................... 40
6/10—Rev. 0 to Rev. A
Changes to Features Section and General Description Section . 1
Changes to Thermal Resistance Section and Table 3 ................... 5
Added Figure 4; Renumbered Sequentially .................................. 6
Changes to Table 4 ............................................................................ 6
Changes to Layout Guidelines Section ........................................ 19
Updated Outline Dimensions ....................................................... 39
Changes to Ordering Guide .......................................................... 40
4/10—Revision 0: Initial Version