ADP8860 Analog Devices, ADP8860 Datasheet - Page 2

• Manufacturer Part Number: ADP8860
• Description: Charge Pump, 7-Channel Smart LED Driver with I2C Interface
• Manufacturer: Analog Devices

Specifications of ADP8860

• Vin Range: 2.4V to 5.5V
• Vout (v): 4.3 to 5.5
• Synchronous: No
• Package: 20-Lead WLCSP
• Led Configuration: Parallel
• Topology: Capacitive
• I2c Support: Yes
• Max Iout (ma): 60mA
• Brightness Control: I2C
• Peak Efficiency (%): 89%
• Switching Frequency: 1MHz

ADP8860
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Typical Operating Circuit ................................................................ 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 6
Pin Configurations and Function Descriptions ........................... 7
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 12
REVISION HISTORY
5/09—Revision 0: Initial Version
I
Maximum Temperature Ranges ................................................. 6
Thermal Resistance ...................................................................... 6
ESD Caution .................................................................................. 6
Power Stage.................................................................................. 13
Operating Modes ........................................................................ 14
Backlight Operating Levels ....................................................... 16
Backlight Maximum and Dim Settings ................................... 17
Automated Fade In and Fade Out ............................................ 17
2
C Timing Diagram ..................................................................... 5
Rev. 0 | Page 2 of 52
Applications Information .............................................................. 24
I
Outline Dimensions ....................................................................... 49
2
C Programming and Digital Control ........................................ 26
Backlight Turn On/Turn Off/Dim ........................................... 17
Automatic Dim and Turn Off Timers ..................................... 18
Fade Override ............................................................................. 19
Ambient Light Sensing .............................................................. 19
Automatic Backlight Adjustment ............................................. 20
Independent Sink Control ........................................................ 20
Short-Circuit Protection Mode ................................................ 21
Overvoltage Protection .............................................................. 21
Thermal Shutdown/Overtemperature Protection ................. 21
Interrupts ..................................................................................... 23
Layout Guidelines....................................................................... 24
Example Circuits ........................................................................ 25
Backlight Register Descriptions ............................................... 30
Independent Sink Register Descriptions ................................. 37
Comparator Register Descriptions .......................................... 45
Ordering Guide .......................................................................... 50