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ADP5501
TABLE OF CONTENTS
Features .............................................................................................. 1 ?
Applications ....................................................................................... 1 ?
Typical Operating Circuit ................................................................ 1 ?
General Description ......................................................................... 1 ?
Revision History ............................................................................... 2 ?
Specifications..................................................................................... 3 ?
Absolute Maximum Ratings............................................................ 5 ?
Thermal Resistance ...................................................................... 5 ?
ESD Caution .................................................................................. 5 ?
Pin Configuration and Function Descriptions ............................. 6 ?
Typical Performance Characteristics ............................................. 7 ?
Theory of Operation ........................................................................ 9 ?
Backlight Drive Control .............................................................. 9 ?
Backlight Operating Levels ....................................................... 10 ?
Backlight Maximum and Dim Settings ................................... 10 ?
Backlight Turn-On/Turn-Off/Dim .......................................... 10 ?
Automatic Dim and Turn-Off Timers ..................................... 11 ?
Fade Override ............................................................................. 13 ?
Advanced Fading (Square) ........................................................ 13 ?
Advanced Fading (Cubic 1 and Cubic 2) ................................ 13 ?
Ambient Light Sensing .............................................................. 14 ?
Automatic Backlight Adjustment ............................................. 14 ?
LED Current Sinks ..................................................................... 15 ?
Interrupt Output (INT) ............................................................. 17 ?
Reset Input (RST) ....................................................................... 17 ?
Communicaton Interface .............................................................. 18 ?
Register Map ................................................................................... 19 ?
Detailed Register Descriptions ..................................................... 20 ?
Applications Information .............................................................. 26 ?
Converter Topology ................................................................... 26 ?
PCB Layout ................................................................................. 27 ?
Example Circuit .......................................................................... 27 ?
Outline Dimensions ....................................................................... 28 ?
Ordering Guide .......................................................................... 28 ?
Linear Backlight Fade-In and Fade-Out.................................. 11 ?
REVISION HISTORY
10/08—Revision 0: Initial Version
Rev. 0 | Page 2 of 28
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