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LTC3576-1 PDF预览

LTC3576-1

更新时间： 2024-11-01 05:43:55
品牌 Logo 应用领域
凌特 - Linear 开关
页数 文件大小 规格书
48页 582K
描述
Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs

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中文翻译

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LTC3576-1 数据手册

 浏览型号LTC3576-1的Datasheet PDF文件第2页浏览型号LTC3576-1的Datasheet PDF文件第3页浏览型号LTC3576-1的Datasheet PDF文件第4页浏览型号LTC3576-1的Datasheet PDF文件第5页浏览型号LTC3576-1的Datasheet PDF文件第6页浏览型号LTC3576-1的Datasheet PDF文件第7页 
LTC3576/LTC3576-1  
Switching Power Manager  
with USB On-the-Go + Triple  
Step-Down DC/DCs  
FEATURES  
DESCRIPTION  
The LTC®3576/LTC3576-1 are highly integrated power  
n
Bidirectional Switching Regulator with Bat-  
Track™ Adaptive Output Control Provides Efficient management and battery charger ICs for Li-Ion/Polymer  
Charging and a 5V Output for USB On-The-Go  
Bat-Track Control of External High Voltage Step-  
Down Switching Regulator  
battery applications. They each include a high efficiency,  
bidirectional switching PowerPath™ manager with auto-  
maticloadprioritization,abatterycharger,anidealdiode,a  
controller for an external high voltage switching regulator  
andthreegeneralpurposestep-downswitchingregulators  
n
n
n
n
Overvoltage Protection Guards Against Damage  
“Instant-On” Operation with Discharged Battery  
2
2
Triple Step-Down Switching Regulators with I C  
with I C adjustable output voltages. The internal switch-  
Adjustable Outputs (1A/400mA/400mA I  
)
ing regulators automatically limit input current for USB  
compatibility and can also generate 5V at 500mA for USB  
on-the-go applications when powered from the battery.  
BoththeUSBandexternalswitchingregulatorpowerpaths  
featureBat-Trackoptimizedchargingtoprovidemaximum  
180mΩ Internal Ideal Diode + ExternalOIUdTeal Diode  
Controller Powers the Load in Battery Mode  
n
n
n
n
Li-Ion/Polymer Battery Charger (1.5A Max I  
Battery Float Voltage: 4.2V (LTC3576), 4.1V (LTC3576-1)  
)
CHG  
Compact (4mm × 6mm × 0.75mm) 38-pin QFN Package power to the application from supplies as high as 38V. An  
overvoltage circuit protects the LTC3576/LTC3576-1 from  
APPLICATIONS  
damageduetohighvoltageontheV  
orWALLpinswith  
BUS  
justtwoexternalcomponents.TheLTC3576/LTC3576-1are  
available in a low profile 38-pin (4mm × 6mm × 0.75mm)  
QFN package.  
n
HDD-Based Media Players  
n
GPS, PDAs, Digital Cameras, Smart Phones  
n
Automotive Compatible Portable Electronics  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Bat-Track  
and PowerPath are trademarks of Linear Technology Corporation. All other trademarks are the  
property of their respective owners. Protected by U.S. Patents, including 6522118, 6404251.  
TYPICAL APPLICATION  
High Efficiency PowerPath Manager with Overvoltage Protection  
and Triple Step-Down Regulator  
AUTOMOTIVE  
LT3653  
FIREWIRE, ETC.  
PowerPath Switching Regulator Efficiency  
to System Load (PVOUT/PVBUS  
)
USB OR  
5V AC  
ADAPTER  
OVERVOLTAGE  
PROTECTION  
EXTERNAL HIGH VOLTAGE  
BUCK CONTROLLER  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
TO OTHER  
LOADS  
USB COMPLIANT  
BIDIRECTIONAL  
SWITCHING  
BAT = 4.2V  
BAT = 3.3V  
REGULATOR  
CC/CV  
0V  
OPTIONAL  
BATTERY  
CHARGER  
CHARGE  
LTC3576/LTC3576-1  
+
Li-Ion  
T
V
I
= 5V  
BUS  
= 0mA  
BAT  
10x MODE  
3.3V/20mA  
RTC/LOW  
ALWAYS ON LDO  
POWER LOGIC  
10  
100  
1000  
0.8V TO 3.6V/400mA  
0.8V TO 3.6V/400mA  
LOAD CURRENT (mA)  
1
2
3
MEMORY  
I/O  
TRIPLE  
HIGH EFFICIENCY  
STEP-DOWN  
SWITCHING  
REGULATORS  
6
3576 TA01b  
ENABLE  
CONTROLS  
0.8V TO 3.6V/1A  
CORE  
μPROCESSOR  
RST  
2
2
2
I C  
I C PORT  
3576 TA01  
3576f  
1
1234567...48

中文翻译

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