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ADP8861 PDF预览

ADP8861

更新时间: 2024-02-10 14:27:24
品牌 Logo 应用领域
亚德诺 - ADI 驱动器
页数 文件大小 规格书
40页 682K
描述
Charge Pump, 7-Channel Smart LED Driver with I2C Interface

ADP8861 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:QFN
包装说明:HVQCCN, LCC20,.16SQ,20针数:20
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.67
Samacsys Confidence:Samacsys Status:Released
Schematic Symbol:https://componentsearchengine.com/symbol.php?partID=579346PCB Footprint:https://componentsearchengine.com/footprint.php?partID=579346
Samacsys PartID:579346Samacsys Image:https://componentsearchengine.com/Images/9/ADP8861ACPZ-RL.jpg
Samacsys Thumbnail Image:https://componentsearchengine.com/Thumbnails/1/ADP8861ACPZ-RL.jpgSamacsys Pin Count:21
Samacsys Part Category:Integrated CircuitSamacsys Package Category:Other
Samacsys Footprint Name:QFN50P400X400X80-21NSamacsys Released Date:2017-01-11 11:21:59
Is Samacsys:N数据输入模式:SERIAL
接口集成电路类型:LED DISPLAY DRIVERJESD-30 代码:S-XQCC-N20
JESD-609代码:e3长度:4 mm
湿度敏感等级:1复用显示功能:NO
功能数量:1区段数:7
端子数量:20最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:UNSPECIFIED
封装代码:HVQCCN封装等效代码:LCC20,.16SQ,20
封装形状:SQUARE封装形式:CHIP CARRIER
峰值回流温度(摄氏度):225电源:3.6 V
认证状态:Not Qualified座面最大高度:0.8 mm
子类别:Display Drivers最大供电电压:5.5 V
最小供电电压:2.5 V标称供电电压:3.6 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:MATTE TIN端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:4 mm
最小 fmax:0.4 MHzBase Number Matches:1

ADP8861 数据手册

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Charge Pump, 7-Channel  
Smart LED Driver with I2C Interface  
ADP8861  
TYPICAL OPERATING CIRCUIT  
FEATURES  
Charge pump with automatic gain selection of 1×, 1.5×, and  
2× for maximum efficiency  
7 independent, programmable LED drivers  
7 drivers capable of 30 mA (typical)  
D1  
D2  
D3  
D4  
D5  
D6  
D7  
VIN  
1 driver also capable of 60 mA (typical)  
Programmable maximum current limit (128 levels)  
Standby mode for <1 μA current consumption  
16 programmable fade in and fade out times  
0.1 sec to 5.5 sec  
C
IN  
1µF  
VOUT  
OUT  
VDDIO  
C
1µF  
nRST  
SDA  
SCL  
C1+  
C1–  
C2+  
C2–  
VDDIO  
VDDIO  
VDDIO  
C1  
Choose from linear, square, or cubic rates  
Fading override  
1µF  
ADP8861  
I2C-compatible interface for all programming  
Dedicated reset pin and built-in power-on reset (POR)  
Short-circuit, overvoltage, and overtemperature protection  
Internal soft start to limit inrush currents  
Input-to-output isolation during faults or shutdown  
Operation down to VIN = 2.5 V with undervoltage lockout  
(UVLO) at VIN = 2.0 V  
C2  
1µF  
nINT  
GND1  
GND2  
Figure 1.  
Small lead frame chip scale package (LFCSP)  
APPLICATIONS  
Mobile display backlighting  
Mobile phone keypad backlighting  
Dual RGB backlighting  
LED indication  
General backlighting of small format displays  
GENERAL DESCRIPTION  
The ADP8861 provides a powerful charge pump driver with  
independent control of up to seven LEDs. These seven LEDs  
can be independently driven up to 30 mA (typical). The seventh  
LED can also be driven to 60 mA (typical). All LEDs are pro-  
grammable for maximum current and fade in/out times via  
the I2C interface. These LEDs can also be combined into groups to  
reduce the processor instructions during fade in/out.  
capable of driving a maximum IOUT of 240 mA from a supply  
of 2.5 V to 5.5 V. A full suite of safety features, including short-  
circuit, overvoltage, and overtemperature protection, allows  
easy implementation of a safe and robust design. Additionally,  
input inrush currents are limited via an integrated soft start  
combined with controlled input-to-output isolation.  
The ADP8861 is available in a compact lead frame chip scale  
package (LFCSP).  
This entire configuration is driven by a two-capacitor charge  
pump with gains of 1×, 1.5×, and 2×. The charge pump is  
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  
©2010 Analog Devices, Inc. All rights reserved.  
 

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