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ADP3808 PDF预览

ADP3808

更新时间： 2024-02-10 00:29:53
品牌 Logo 应用领域
亚德诺 - ADI 电池开关
页数 文件大小 规格书
16页 339K
描述
High Efficiency Switch Mode Li-Ion Battery Charger

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ADP3808 技术参数

生命周期：Obsolete零件包装代码：QFN
包装说明：HVQCCN,针数：24
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.68
Is Samacsys：N模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER
控制技术：PULSE WIDTH MODULATION最大输入电压：22 V
最小输入电压：10 V标称输入电压：20 V
JESD-30 代码：S-XQCC-N24JESD-609代码：e3
长度：4 mm功能数量：1
端子数量：24最高工作温度：100 °C
最低工作温度：封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE认证状态：Not Qualified
座面最大高度：1 mm表面贴装：YES
切换器配置：SINGLE最大切换频率：1000 kHz
温度等级：OTHER端子面层：TIN
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD宽度：4 mm
Base Number Matches：1

ADP3808 数据手册

 浏览型号ADP3808的Datasheet PDF文件第2页浏览型号ADP3808的Datasheet PDF文件第3页浏览型号ADP3808的Datasheet PDF文件第4页浏览型号ADP3808的Datasheet PDF文件第5页浏览型号ADP3808的Datasheet PDF文件第6页浏览型号ADP3808的Datasheet PDF文件第7页 
High Efficiency Switch Mode  
Li-Ion Battery Charger  
ADP3808  
FEATURES  
GENERAL DESCRIPTION  
Selectable 3-cell or 4-cell operation  
Adjustable 4.0 V to 4.5 V per cell  
High end-of-charge voltage accuracy  
0.4ꢀ ꢁ 25°C  
0.6ꢀ ꢁ 5°C to 55°C  
0.8ꢀ ꢁ 0°C to 100°C  
Programmable charge current, including trickle charge  
Bootstrapped synchronous drive for external N-channel  
MOSFETs  
The ADP3808 is a complete Li-Ion battery charging controller  
for 3- or 4-cell battery packs. The device combines accurate  
final battery charge voltage control with constant current  
control to simplify the implementation of constant-current,  
constant-voltage (CCCV) chargers.  
The final battery charge voltage is programmable between 4.0 V  
to 4.5 V per cell, allowing the charging of various cell types. The  
charge current is programmable over a wide range from trickle  
charging to full charging. The system current sense amplifier  
includes an ac adapter detection output to signal that the  
adapter is connected. The bootstrapped synchronous driver  
controls two N-channel MOSFET transistors for high efficiency  
charging at a low system cost.  
Programmable oscillator frequency  
APPLICATIONS  
Portable computers  
Portable equipment  
The ADP3808 is specified over the extended commercial  
temperature range of 0°C to 100°C and is available in a 24-lead  
LFCSP package.  
FUNCTIONAL BLOCK DIAGRAM  
VCC  
22  
LOW-SIDE  
DRIVE  
REGULATOR  
UVLO  
AND BIAS  
8
EN  
DRVREG  
BST  
19  
20  
21  
EN  
IN  
DRVH  
SW  
REFERENCE  
OSCILLATOR  
DRVREG  
10  
AGND  
CONTROL  
LOGIC  
18 DRVREG  
17  
DRVLSD  
DRVL  
5
RT  
CELLSEL  
BAT  
16  
PGND  
12  
11  
3-/4-  
CELL  
VTH  
CSP  
CSM  
15  
14  
6
REFIN  
BATTERY  
VOLTAGE  
ADJUST  
g
m
7
9
BATADJ  
COMP  
g
m
CHARGE  
CURRENT  
SETPOINT  
23  
24  
SYSM  
SYSP  
13  
4
CSADJ  
CMP  
1V  
EXTPWR  
CMP  
SYS+  
CMP  
18.25V  
1
2
3
ISYS LIMSET  
LIMIT  
Figure 1.  
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  
©2007 Analog Devices, Inc. All rights reserved.  
 
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