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LTC3555EUFD#PBF PDF预览

LTC3555EUFD#PBF

更新时间： 2024-11-11 19:11:51
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
34页 434K
描述
LTC3555/LTC3555-X - High Efficiency USB Power Manager + Triple Step-Down DC/DC; Package: QFN; Pins: 28; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3555EUFD#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, LCC28,.16X.2,20
针数：28Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.41其他特性：SEATED HT-CALCULATED
模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUIT控制模式：CURRENT-MODE
控制技术：HYSTERETIC CURRENT MODE最大输入电压：5.5 V
最小输入电压：4.35 V标称输入电压：5 V
JESD-30 代码：R-PQCC-N28JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：1端子数量：28
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：3 A标称输出电压：3.3 V
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC28,.16X.2,20封装形状：RECTANGULAR
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.8 mm
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：4.35 V
标称供电电压 (Vsup)：5 V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：Matte Tin (Sn)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：30宽度：4 mm
Base Number Matches：1

LTC3555EUFD#PBF 数据手册

 浏览型号LTC3555EUFD#PBF的Datasheet PDF文件第2页浏览型号LTC3555EUFD#PBF的Datasheet PDF文件第3页浏览型号LTC3555EUFD#PBF的Datasheet PDF文件第4页浏览型号LTC3555EUFD#PBF的Datasheet PDF文件第5页浏览型号LTC3555EUFD#PBF的Datasheet PDF文件第6页浏览型号LTC3555EUFD#PBF的Datasheet PDF文件第7页 
LTC3555/LTC3555-X  
High Efficiency USB Power  
Manager + Triple  
Step-Down DC/DC  
DESCRIPTION  
FEATURES  
The LTC®3555 family are highly integrated USB com-  
patible power management and battery charger ICs for  
Li-Ion/Polymer battery applications. They include a high  
efficiency current limited switching PowerPath manager  
withautomaticloadprioritization,abatterycharger,anideal  
diode and three general purpose synchronous step-down  
switching regulators.  
Power Manager  
n
High Efficiency Switching PowerPath™ Controller  
with Bat-Track™ Adaptive Output Control  
n
Programmable USB or Wall Current Limit  
(100mA/500mA/1A)  
n
Full Featured Li-Ion/Polymer Battery Charger  
n
1.5A Maximum Charge Current  
n
Internal 180mΩ Ideal Diode + External Ideal Diode  
The LTC3555 family limits input current to either 100mA  
or 500mA for USB applications or 1A for adapter-powered  
applications. Unlike linear chargers, the LTC3555 family’s  
switching architecture transmits nearly all of the power  
available from the USB port to the load with minimal loss  
and heat which eases thermal constraints in small spaces.  
Controller Powers Load in Battery Mode  
n
Low No-Load Quiescent Current when Powered from  
BAT (<32µA)  
DC/DCs  
n
Triple High Efficiency Step-Down DC/DCs  
(1A/400mA/400mA I  
)
OUT  
Two of the three general purpose switching regulators can  
provide up to 400mA and the third can deliver 1A. The  
n
n
n
n
n
All Regulators Operate at 2.25MHz  
2
Dynamic Voltage Scaling on Two Outputs  
entire product can be controlled via I C or simple I/O. The  
2
I C or Independent Enable, V  
Controls  
OUT  
LTC3555-1/LTC3555-3 versions offer “instant-on” power  
deliverytotheportableproductevenwithaverylowbattery  
voltage.TheLTC3555-3versionalsohasareducedcharger  
float voltage of 4.100V for battery safety and longevity.  
Low No-Load Quiescent Current: 20µA  
28-Pin (4mm × 5mm × 0.75mm) QFN Package  
APPLICATIONS  
The LTC3555 family is available in the low profile 28-pin  
(4mm × 5mm × 0.75mm) QFN surface mount package.  
n
HDD-Based MP3 Players, PDAs, GPS, PMPs  
n
L, LT, LTC, LTM Linear Technology, the Linear logo and Burst Mode are registered trademarks  
and PowerPath 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 and 6404251.  
Portable Medical Products  
Handheld Instrumentation  
n
n
Other USB-Based Handheld Products  
TYPICAL APPLICATION  
High Efficiency PowerPath Manager and Triple Step-Down Regulator  
Switching Regulator Efficiency to  
USB/WALL  
4.35V TO 5.5V  
TO OTHER  
LOADS  
USB COMPLIANT  
STEP-DOWN  
REGULATOR  
System Load (POUT/PBUS  
)
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
CC/CV  
BATTERY  
CHARGER  
0V  
OPTIONAL  
CURRENT  
CONTROL  
BAT = 4.2V  
BAT = 3.3V  
CHARGE  
+
Li-Ion  
T
LTC3555/LTC3555-X  
3.3V/25mA  
RTC/LOW  
ALWAYS ON LDO  
1
POWER LOGIC  
0.8V TO 3.6V/400mA  
0.8V TO 3.6V/400mA  
MEMORY  
I/O  
TRIPLE  
5
HIGH EFFICIENCY  
STEP-DOWN  
V
I
= 5V  
ENABLE  
CONTROLS  
BUS  
= 0mA  
2
3
BAT  
0.8V TO 3.6V/1A  
SWITCHING  
10x MODE  
CORE  
µPROCESSOR  
0
REGULATORS  
RST  
0.01  
0.1  
(A)  
1
2
I
2
2
OUT  
I C  
I C PORT  
3555 TA01b  
3555 TA01  
3555fe  
1
For more information www.linear.com/LTC3555  
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中文翻译

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