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ADP1655ACBZ-R7 PDF预览

ADP1655ACBZ-R7

更新时间： 2024-02-09 11:03:43
品牌 Logo 应用领域
亚德诺 - ADI 显示驱动器驱动程序和接口接口集成电路闪光灯
页数 文件大小 规格书
24页 664K
描述
Dual LED Flash Driver with I2C-Compatible Interface

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ADP1655ACBZ-R7 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：BGA
包装说明：VFBGA, BGA12,3X4,20针数：12
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.72
Is Samacsys：N数据输入模式：SERIAL
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PBGA-B12
JESD-609代码：e1长度：2 mm
复用显示功能：NO功能数量：1
区段数：2端子数量：12
最高工作温度：125 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：VFBGA
封装等效代码：BGA12,3X4,20封装形状：RECTANGULAR
封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH峰值回流温度（摄氏度）：260
电源：3.6 V认证状态：Not Qualified
座面最大高度：0.66 mm子类别：Display Drivers
最大供电电压：5.5 V最小供电电压：2.7 V
标称供电电压：3.6 V表面贴装：YES
温度等级：AUTOMOTIVE端子面层：TIN SILVER COPPER
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：40
宽度：1.5 mm最小 fmax：0.4 MHz
Base Number Matches：1

ADP1655ACBZ-R7 数据手册

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Dual LED Flash Driver with  
I2C-Compatible Interface  
ADP1655  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
INPUT VOLTAGE = 2.5V TO 5.5V  
Ultracompact solution  
10µF  
Small 2 mm × 1.5 mm 12-ball WLCSP package  
Tiny, low profile 2.2 μH power inductor  
LED current source for local LED grounding and low EMI  
Synchronous 2 MHz PWM boost convertor, no external diode  
High efficiency: 88% peak  
Reduces high levels of input battery current during flash  
Limits battery current drain in torch mode  
I2C programmable  
2.2µH  
STROBE VIN  
TORCH  
SW  
VOUT  
10µF  
ADP1655  
SCL/EN1  
SDA/EN2  
LED_OUT  
TX_MASK  
Currents up to 400 mA in flash mode for two LEDs  
Currents up to 500 mA in flash mode for one LED with  
5% accuracy  
Currents up to 160 mA in torch mode with 10% accuracy  
Peak inductor current limit  
I2C/EN SGND PGND  
Figure 1.  
Flash timer  
Control  
I2C-compatible control registers  
External STROBE pin  
Li-ION +  
C1  
L1  
Li-ION +  
PGND  
External direct TORCH pin  
TX_MASK input to prevent high input battery current levels  
Safety  
3mm  
INDUCTOR  
Thermal overload protection  
Flash timeout  
DIGITAL  
C2  
INPUT/  
OUTPUT  
Inductor fault detection  
Output overvoltage  
LED  
ANODE  
Short circuit protection  
6.5mm  
Soft start reduces inrush input current  
Figure 2. PCB Layout  
APPLICATIONS  
Camera-enabled cellular phones and smart phones  
Digital still cameras, camcorders, and PDAs  
GENERAL DESCRIPTION  
The ADP1655 is a very compact, highly efficient, dual white  
LED flash driver for high resolution camera phones, which  
improves picture and video quality in low light environments.  
The device integrates a 2 MHz synchronous inductive boost  
convertor, an I2C-compatible interface and a 500 mA current  
source. The high switching frequency enables the use of a tiny,  
low profile 2.2 μH power inductor, and the current source  
permits LED cathode grounding for thermally enhanced,  
low EMI and compact layouts.  
minimize battery current draw during flash events. In addition,  
a Tx-mask input permits the flash LED current to reduce quickly  
and, therefore, the battery current reduces quickly, during a  
GSM power amplifier current burst.  
The I2C-compatible interface enables the programmability  
of timers, currents, and status bit readback for operation  
monitoring and safety control.  
The ADP1655 comes in a compact 12-ball 0.5 mm pitch  
WLCSP package and is specified over the full −40°C to  
+125°C junction temperature range.  
The efficiency is high over the entire battery voltage range to  
maximize the input power to LED power conversion and  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2009 Analog Devices, Inc. All rights reserved.  
 
 
 
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