ADM8845ACPZ-REEL7 Analog Devices Inc, ADM8845ACPZ-REEL7 Datasheet - Page 2
![IC, WHITE LED DRIVER CHARGE PUMP LFCSP16](/photos/6/50/65061/505-16-lfcsp_sml.jpg)
ADM8845ACPZ-REEL7
Manufacturer Part Number
ADM8845ACPZ-REEL7
Description
IC, WHITE LED DRIVER CHARGE PUMP LFCSP16
Manufacturer
Analog Devices Inc
Type
Backlight, White LEDr
Datasheet
1.ADM8845ACPZ-REEL7.pdf
(20 pages)
Specifications of ADM8845ACPZ-REEL7
Led Driver Application
Cellular Phones, White LED Backlighting
No. Of Outputs
1
Output Current
30mA
Output Voltage
4.81V
Input Voltage
2.6V To 5.5V
Topology
Charge Pump
Constant Current
Yes
Number Of Outputs
6
Internal Driver
Yes
Type - Primary
Backlight, Flash/Torch
Type - Secondary
White LED
Frequency
200kHz
Voltage - Supply
2.6 V ~ 5.5 V
Voltage - Output
4.81V
Mounting Type
Surface Mount
Package / Case
16-LFCSP
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
30mA
Internal Switch(s)
Yes
Efficiency
88%
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
ADM8845EB-EVALZ - BOARD EVALUATION FOR ADM8845
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
ADM8845ACPZ-REEL7
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ADM8845ACPZ-REEL7
Manufacturer:
BROADCOM
Quantity:
20
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