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LTC3552EDHC-1 PDF预览

LTC3552EDHC-1

更新时间： 2024-09-24 05:43:55
品牌 Logo 应用领域
凌特 - Linear 转换器电池
页数 文件大小 规格书
20页 286K
描述
Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter

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中文翻译

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LTC3552EDHC-1 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON,
针数：16Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.36其他特性：ALSO CONTAINS A LINEAR LI-ION BATTERY CHARGER
模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER控制模式：CURRENT-MODE
最大输入电压：5.5 V最小输入电压：2.5 V
标称输入电压：3.6 VJESD-30 代码：R-PDSO-N16
JESD-609代码：e0长度：5 mm
湿度敏感等级：1功能数量：2
端子数量：16最高工作温度：85 °C
最低工作温度：最大输出电流：1.6 A
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：235认证状态：Not Qualified
座面最大高度：0.8 mm表面贴装：YES
切换器配置：BUCK最大切换频率：2700 kHz
技术：CMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：NO LEAD
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：20宽度：3 mm

LTC3552EDHC-1 数据手册

 浏览型号LTC3552EDHC-1的Datasheet PDF文件第2页浏览型号LTC3552EDHC-1的Datasheet PDF文件第3页浏览型号LTC3552EDHC-1的Datasheet PDF文件第4页浏览型号LTC3552EDHC-1的Datasheet PDF文件第5页浏览型号LTC3552EDHC-1的Datasheet PDF文件第6页浏览型号LTC3552EDHC-1的Datasheet PDF文件第7页 
LTC3552-1  
Standalone Linear Li-Ion  
Battery Charger and Dual  
Synchronous Buck Converter  
U
DESCRIPTIO  
FEATURES  
TheLTC®3552-1isacompleteconstant-current/constant-  
voltage linear charger and dual fixed output DC/DC con-  
verter for single cell lithium-ion batteries. Its DFN package  
and low external component count make the LTC3552-1  
ideally suited for portable applications. Furthermore,  
the LTC3552-1 is designed to work within USB power  
specifications.  
■
Programmable Charge Current Up to 950mA  
■
Complete Linear Charger and Dual DC/DC  
Regulator  
■
Dual Fixed Outputs:  
1.8V at 800mA  
1.575V at 400mA  
■
No MOSFET, Sense Resistor or Blocking Diode  
Required  
No external sense resistor or external blocking diode are  
required due to the internal MOSFET architecture. The  
charge voltage is fixed at 4.2V and the charge current is  
programmed with a resistor. The charge cycle terminates  
when the charge current drops below the programmed  
termination threshold after the final float voltage is  
reached. When the input supply (wall adapter or USB  
supply) is removed, the LTC3552-1 enters a low current  
state dropping the battery drain current to less than 2µA.  
Thermal regulation maximizes charge rate without risk  
of overheating.  
■
Thermal Regulation Maximizes Charge Rate  
Without Risk of Overheating*  
Charges Directly from a USB Port  
■
■
Programmable Charge Current Termination  
■
Preset 4.2V Charge Voltage with 1ꢀ Accuracy  
■
Charge Current Monitor Output for Gas Gauging*  
■
Automatic Recharge  
■
Charge Status Output  
■
“Power Present” Output  
■
Soft-Start Limits Inrush Current  
■
Low Quiescent Current Buck Converter (40µA)  
■
The synchronous step-down switching regulators  
generate fixed output voltages of 1.8V and 1.575V.  
The switching frequency is set at 2.25MHz, allowing the  
use of small surface mount inductors and capacitors.  
Current Mode Operation, Constant Frequency (2.25MHz)  
■
Low Profile (5mm × 3mm × 0.75mm) DFN Package  
U
APPLICATIO S  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Protected by U.S. Patents including 6522118, 6700364, 5481178, 6580258, 6304066,  
6127815, 6498466, 6611131.  
■
Cellular Telephones, PDAs, MP3 Players  
Bluetooth Applications  
■
U
TYPICAL APPLICATIO  
Efficiency Curve/  
Power Loss of Regulators  
Single Cell Li-Ion Battery Charger with  
C/5 Termination and Dual DC/DC Converter  
100  
95  
90  
85  
80  
75  
70  
65  
60  
1000  
100  
10  
V
= 1.575V  
OUT2  
V
V
IN  
IN  
RUN1  
RUN2  
BAT  
V
= 1.8V  
OUT1  
4.5V TO  
6.5V  
ITERM  
PROG  
1µF  
800mA  
4.2V  
+
1-CELL  
Li-Ion  
619Ω 1.24k  
4.7µH  
10µF  
CHRG  
PWR  
CHANNEL 1  
BATTERY  
V
CC  
LTC3552-1  
EN  
2.2µH  
V
V
OUT1  
OUT2  
CHANNEL 2  
1.575V/  
400mA  
SW2  
SW1  
OUT1  
1.8V/  
1
800mA  
V
V
OUT2  
FB2  
C
C
C
C
OUT2  
10µF  
OUT1  
V
= 3.6V  
FF2  
330pF  
FF1  
330pF  
IN  
Burst Mode OPERATION  
10µF  
V
V
FB1  
0.1  
1000  
CER  
CER  
GND  
1
10  
100  
LOAD CURRENT (mA)  
35521 TA01  
35521 TAO1b  
35521fa  
1
1234567...20

中文翻译

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