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LTC3554EUD-2#PBF PDF预览

LTC3554EUD-2#PBF

更新时间： 2024-02-10 01:57:23
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
36页 515K
描述
LTC3554/LTC3554-1/ LTC3554-2/LTC3554-3 - Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators; Package: QFN; Pins: 20; Temperature Range: -40°C to 85°C

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LTC3554EUD-2#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN,
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.55模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：2.7 V
标称输入电压：3.8 VJESD-30 代码：S-PQCC-N20
JESD-609代码：e3长度：3 mm
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.6 A标称输出电压：4.2 V
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：NOT SPECIFIED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：2590 kHz
技术：CMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.4 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3 mm
Base Number Matches：1

LTC3554EUD-2#PBF 数据手册

 浏览型号LTC3554EUD-2#PBF的Datasheet PDF文件第2页浏览型号LTC3554EUD-2#PBF的Datasheet PDF文件第3页浏览型号LTC3554EUD-2#PBF的Datasheet PDF文件第4页浏览型号LTC3554EUD-2#PBF的Datasheet PDF文件第5页浏览型号LTC3554EUD-2#PBF的Datasheet PDF文件第6页浏览型号LTC3554EUD-2#PBF的Datasheet PDF文件第7页 
LTC3554/LTC3554-1/  
LTC3554-2/LTC3554-3  
Micropower USB Power  
Manager with Li-Ion Charger  
and Two Step-Down Regulators  
DescripTion  
FeaTures  
The LTC®3554 family* are micropower, highly integrated  
powermanagementandbatterychargerICsforsingle-cell  
Li-Ion/Polymer battery applications. They include a  
PowerPath™ manager with automatic load prioritization,  
a battery charger, an ideal diode and numerous internal  
protectionfeatures.DesignedspecificallyforUSBapplica-  
tions, the LTC3554 power managers automatically limit  
input current to a maximum of either 100mA or 500mA.  
Battery charge current is automatically reduced such that  
the sum of the load current and the charge current does  
not exceed the selected input current limit.  
n
10μA Standby Mode Quiescent Current (All Outputs On)  
n
Seamless Transition Between Input Power Sources:  
Li-Ion/Polymer Battery and USB  
240mΩ Internal Ideal Diode  
n
n
Dual High Efficiency Step-Down Switching Regulators  
(200mA I ) with Adjustable Output Voltages  
OUT  
n
n
Pushbutton On/Off Control with System Reset  
Reset Time: 5 sec (LTC3554/LTC3554-1),  
14 sec (LTC3554-2/LTC3554-3)  
n
n
n
n
Full Featured Li-Ion/Polymer Battery Charger  
Programmable Charge Current with Thermal Limiting  
Instant-On Operation with Discharged Battery  
Battery Float Voltage: 4.2V (LTC3554/LTC3554-2/  
LTC3554-3), 4.1V (LTC3554-1)  
The LTC3554 also includes two synchronous step-down  
switching regulators as well as a pushbutton controller.  
With all supplies enabled in standby mode, the quiescent  
current drawn from the battery is only 10μA. The LTC3554  
family are available in a 3mm × 3mm × 0.75mm 20-lead  
QFN package.  
n
3mm × 3mm × 0.75mm 20-Lead QFN Package  
applicaTions  
n
USB-Based Handheld Products  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks  
and PowerPath, Hot Swap and Bat-Track are trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners. Protected by U.S. Patents,  
including 6522118, 6700364, 5481178, 6304066, 6570372, 6580258, 7511390.  
n
Portable Li-Ion/Polymer Based Electronic Devices  
n
Fitness Computers  
Low Power Medical Devices  
*See table on page 2 for available options.  
n
Typical applicaTion  
4.35V TO 5.5V  
SYSTEM  
LOAD  
V
V
OUT  
BUS  
USB INPUT  
10µF  
10µF  
100k  
Battery Drain Current  
vs Temperature  
NTC  
CHRG  
LTC3554  
PROG  
BAT  
14  
100k  
T
+
Li-Ion  
V
= 3.8V  
BAT  
1.87k  
BATTERY  
STBY = 3.8V  
12  
10  
8
REGULATORS LOAD = 0mA  
BOTH REGULATORS  
ENABLED  
HPWR  
SUSP  
BVIN  
2.2µF  
4.7µH  
ONE REGULATOR ENABLED  
3.3V  
PWR_ON1  
SW1  
FB1  
6
200mA  
2.05M  
10pF  
10µF  
10µF  
BOTH REGULATORS DISABLED  
4
FSEL  
649k  
2
STBY  
HARD RESET  
PGOOD  
PWR_ON2  
PBSTAT  
ON  
10µH  
10pF  
0
1.2V  
200mA  
–75 –50 –25  
0
25 50 75 100 125  
SW2  
TEMPERATURE (°C)  
332k  
649k  
3554 TA01b  
FB2  
3554 TA01a  
ON/OFF  
3554123ff  
1
1234567...36

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