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LTC3566EUF-PBF PDF预览

LTC3566EUF-PBF

更新时间： 2024-11-01 05:43:55
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
28页 262K
描述
High Effi ciency USB Power Manager Plus 1A Buck-Boost Converter

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中文翻译

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LTC3566EUF-PBF 数据手册

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LTC3566  
High Efficiency USB  
Power Manager Plus 1A  
Buck-Boost Converter  
FEATURES  
DESCRIPTION  
POWER MANAGER  
The LTC®3566 is a highly integrated power management  
and battery charger IC for Li-Ion/Polymer battery applica-  
tions.Itincludesahighefficiencycurrentlimitedswitching  
PowerPath manager with automatic load prioritization,  
a battery charger, an ideal diode, and a high efficiency  
synchronous buck-boost switching regulator. Designed  
specifically for USB applications, the LTC3566’s switch-  
ing power manager automatically limits input current to a  
maximumofeither100mAor500mAforUSBapplications  
or 1A for adapter-powered applications.  
High Efficiency Switching PowerPathTM Controller  
■
with Bat-TrackTM Adaptive Output Control  
■
Programmable USB or Wall Input Current Limit  
(100mA/500mA/1A)  
■
Full Featured Li-Ion/Polymer Battery Charger  
■
“Instant-On” Operation with Discharged Battery  
■
1.5A Maximum Charge Current  
■
Internal 180mΩ Ideal Diode Plus External Ideal Diode  
Controller Powers Load in Battery Mode  
■
Low No-Load I when Powered from BAT (<30μA)  
Q
The LTC3566’s switching input stage transmits nearly all of  
the 2.5W available from the USB port to the system load  
with minimal power wasted as heat. This feature allows the  
LTC3566toprovidemorepowertotheapplicationandeases  
the constraint of thermal budgeting in small spaces.  
1A BUCK-BOOST DC/DC  
■
High Efficiency (1A I  
)
OUT  
■
■
■
■
2.25MHz Constant Frequency Operation  
Low No-Load Quiescent Current (~13μA)  
Zero Shutdown Current  
The synchronous buck-boost DC/DC can provide up to 1A.  
Pin Control of All Functions  
The LTC3566 is available in a low profile 24-lead  
4mm × 4mm QFN surface mount package.  
APPLICATIONS  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
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, 6404251.  
■
HDD Based MP3 Players, PDA, GPS, PMP Products  
Other USB Based Handheld Products  
■
TYPICAL APPLICATION  
LTC3566 USB Power Manager with 3.3V/1A Buck-Boost  
Switching Regulator Efficiency to  
System Load (POUT/PBUS  
)
FROM AC  
ADAPTER  
3.3μH  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
V
=
OUT  
V
SW  
V
OUT  
FROM USB  
BAT + 300mV  
TO OTHER  
DC/DCs  
BUS  
10μF  
4.7μF  
CLPROG  
PROG  
GATE  
BAT  
3.01k  
100k  
OPTIONAL  
BAT = 4.2V  
0.1μF  
2k  
+
Li-Ion  
1μF  
3.3V/25mA  
ALWAYS  
ON LDO  
BAT = 3.3V  
NTC  
LDO3V3  
V
IN1  
CHRG  
CHRGEN  
ILIM0  
ILIM1  
MODE  
EN1  
100k  
LTC3566  
T
SWAB1  
2.2μH  
1.3nF  
1μF  
SWCD1  
3.3V/1A  
HDD  
V
I
= 5V  
V
OUT1  
BUS  
BAT  
DIGITAL CONTROL  
= 0mA  
324k  
10x MODE  
10μF  
FB1  
VC1  
0
105k  
0.01  
0.1  
(A)  
1
GND  
EXPOSED PAD  
I
3566 TA01  
OUT  
3566 TA01b  
3566fa  
1
1234567...28

中文翻译

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