ADP1650 Analog Devices, ADP1650 Datasheet - Page 2

• Manufacturer Part Number: ADP1650
• Description: 1.5 A LED Flash Driver with I2C-Compatible Interface
• Manufacturer: Analog Devices

Specifications of ADP1650

• Product Description: 1.5 A LED Flash Driver with I2C-Compatible Interface
• Led #: 1
• Led Configuration: Serial
• Topology: Inductive
• Application: Flash
• I2c Support: Yes
• Max Iout (ma): 1500mA
• Brightness Control: I2C
• Peak Efficiency (%): 90%
• Switching Frequency: 3MHz
• Over Volt Protection (v): 5.5V
• Vin Min (v): 2.7V
• Vout (v): 4.575 to 5.425
• Synchronous: Yes
• Package: 12-Bump WLCSP

ADP1650
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 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
4/11—Rev. B to Rev. C
Added 10-Lead LFCSP Package........................................Universal
Changes to Features Section, General Description Section, and
Figure 2 Caption ............................................................................... 1
Changes to Table 1............................................................................ 3
Changes to Table 5............................................................................ 6
Added Figure 5; Renumbered Sequentially .................................. 7
Changes to Table 6............................................................................ 7
Changes to PCB Layout Section and Figure 45 Caption........... 28
Added Figure 46.............................................................................. 28
Updated Outline Dimensions ....................................................... 29
Changes to Ordering Guide .......................................................... 29
2/11—Rev. A to Rev. B
Changes to Features Section and General Description Section . 1
Changes to Switching Regulator, Voltage Output Mode, VOUT
Voltage Parameter and Digital Inputs/GPIO, Torch Glitch
Filtering Delay Parameter, Table 1.................................................. 3
Recommended Specifications: Input and Output Capacitance
and Inductance ............................................................................. 5
I
Thermal Data ................................................................................ 6
Thermal Resistance ...................................................................... 6
ESD Caution.................................................................................. 6
White LED Driver ...................................................................... 12
Modes of Operation ................................................................... 12
Assist Light .................................................................................. 13
Flash Mode .................................................................................. 13
Assist-to-Flash Operation ......................................................... 13
Torch Mode ................................................................................. 13
Torch-to-Flash Mode ................................................................. 14
TxMASK Operation................................................................... 14
Frequency Foldback ................................................................... 14
2
C-Compatible Interface Timing Specifications ..................... 5
Rev. C | Page 2 of 32
Safety Features................................................................................. 18
I
Applications Information .............................................................. 26
PCB Layout...................................................................................... 28
Outline Dimensions ....................................................................... 29
Changed GND to Power Ground Throughout .............................6
Changed IL to I
IBAT to I
Change to Figure 10 Caption ...........................................................8
Change to Figure 11 Caption ...........................................................9
Changed LED_MOD = 10 to LED_MOD = 11 in Figure 32 ... 14
Changes to Analog-to-Digital Converter Operation Section and
Figure 37 .......................................................................................... 15
Changes to Selecting the Output Capacitor Section.................. 26
6/10—Rev. 0 to Rev. A
Changes to Contact Information.....................................................1
5/10—Revision 0: Initial Version
2
C Register Map............................................................................. 20
Indicator LED Driver................................................................. 14
Low Battery LED Current Foldback ........................................ 14
Programmable Battery DC Current Limit.............................. 15
Analog-to-Digital Converter Operation ................................. 15
5 V Output Operation ............................................................... 16
Short-Circuit Fault ..................................................................... 18
Overvoltage Fault ....................................................................... 18
Dynamic Overvoltage Mode (DOVP) .................................... 18
Timeout Fault.............................................................................. 18
Overtemperature Fault .............................................................. 18
Indicator LED Fault ................................................................... 18
Current Limit.............................................................................. 18
Input Undervoltage .................................................................... 18
Soft Start ...................................................................................... 18
Reset Using the Enable (EN) Pin ............................................. 18
Clearing Faults ............................................................................ 18
I
External Component Selection ................................................ 26
Ordering Guide .......................................................................... 29
2
C Interface ................................................................................ 19
BAT
Throughout ..................................................................8
L
, ILED to I
LED
, LED OUT to LED_OUT, and