ADM8845EB-EVALZ Analog Devices Inc, ADM8845EB-EVALZ Datasheet - Page 2

• Manufacturer Part Number: ADM8845EB-EVALZ
• Description: BOARD EVALUATION FOR ADM8845
• Manufacturer: Analog Devices Inc

Specifications of ADM8845EB-EVALZ

• Current - Output / Channel: 20mA
• Outputs And Type: 6, Non-Isolated
• Voltage - Output: 5.5 V
• Features: Charge Pump, Dimmable
• Voltage - Input: 2.6 ~ 5.5V
• Utilized Ic / Part: ADM8845
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADM8845
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
Pin Configuration and Function Descriptions ............................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ...................................................................... 10
REVISION HISTORY
1/11—Rev. B to Rev. C
Changes to Figure 18 and Figure 19 ................................................ 8
Changes to Ordering Guide ........................................................... 18
4/10—Rev. A to Rev. B
Changes to Figure 2 ........................................................................... 5
Changes to Figure 4 ........................................................................... 6
Changes to Figure 16 to Figure 19 ................................................... 8
Changes to Brightness Control with a digital PWM
Signal Section ................................................................................... 11
Added Exposed Pad Notation to Outline Dimensions .............. 18
Changes to Ordering Guide ........................................................... 18
7/05—Rev. 0 to Rev. A
Changes to Table 3 ............................................................................. 5
Changes to Table 7 ........................................................................... 12
Updated Outline Dimensions ........................................................ 18
Changes to Ordering Guide ........................................................... 18
10/04—Revision 0: Initial Version
Thermal Characteristics .............................................................. 4
ESD Caution .................................................................................. 4
Output Current Capability ........................................................ 11
Automatic Gain Control ............................................................ 11
Current Matching ....................................................................... 11
Rev. C | Page 2 of 20
Applications ..................................................................................... 14
Outline Dimensions ....................................................................... 18
Brightness Control with a Digital PWM Signal ..................... 11
LED Brightness Control Using a PWM Signal Applied to
V
LED Brightness Control Using a DC Voltage Applied to
V
Layout Considerations and Noise ............................................ 14
White LED Shorting .................................................................. 14
Driving Fewer than Six LEDs ................................................... 14
Driving Flash LEDs .................................................................... 15
Driving Camera Light, Main, and Sub LEDs.......................... 15
Driving Four Backlight White LEDs and Flash LEDs ........... 16
Power Efficiency ......................................................................... 17
Ordering Guide .......................................................................... 18
PWM
BRIGHT
............................................................................................. 13
.......................................................................................... 13