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LTC3101

更新时间： 2024-11-14 14:58:15
品牌 Logo 应用领域
亚德诺 - ADI 控制器转换器
页数 文件大小 规格书
34页 536K
描述
宽 VIN 范围、多输出 DC/DC 转换器和 PowerPath 控制器

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中文翻译

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LTC3101 数据手册

 浏览型号LTC3101的Datasheet PDF文件第2页浏览型号LTC3101的Datasheet PDF文件第3页浏览型号LTC3101的Datasheet PDF文件第4页浏览型号LTC3101的Datasheet PDF文件第5页浏览型号LTC3101的Datasheet PDF文件第6页浏览型号LTC3101的Datasheet PDF文件第7页 
LTC3101  
Wide V , Multi-Output  
IN  
DC/DC Converter and  
PowerPath Controller  
FEATURES  
DESCRIPTION  
The LTC®3101 is a complete power management solution  
for low power portable devices. It provides three high  
efficiency switching DC/DC converters which seamlessly  
transition from battery to USB/wall adapter power when  
available. A synchronous buck-boost regulator provides  
complete flexibility, allowing operation from a single  
Li-Ion/Polymer battery, 2 to 3 AA cells, a USB port or any  
other power source operating from 1.8V to 5.5V.  
n
Low Loss PowerPath™ Control: Seamless,  
Automatic Transition from Battery to USB or  
Wall Adapter Power  
n
Wide V Range: 1.8V to 5.5V  
IN  
n
Buck-Boost V  
:
1.5V to 5.25V  
OUT  
n
Buck-Boost Generates 3.3V at 300mA for  
V ≥ 1.8V, 3.3V at 800mA for V ≥ 3V  
IN  
IN  
n
n
n
n
n
n
n
n
Dual 350mA Buck Regulators, V  
:
0.6V to V  
OUT IN  
38μA Quiescent Current in Burst Mode® Operation  
1.8V, 50mA Always-On LDO  
Two always-alive outputs, a 50mA LDO and a 200mA MAX  
output that tracks the higher voltage input supply, provide  
power for critical functions or additional external regula-  
tors. Flash memory cards can be directly powered from  
theprotected100mAHotSwapoutput.Pushbuttoncontrol  
logic and a programmable-duration microprocessor reset  
generator simplify interfacing to a microprocessor while  
internal sequencing and independent enable pins provide  
flexiblepower-upoptions.TheLTC3101isavailableinalow  
profile (0.75mm) 24-lead 4mm × 4mm QFN package.  
Protected 100mA Hot Swap™ Output  
Pushbutton On/Off Control  
Current Limited 200mA MAX Output  
Programmable Power-Up Sequencing  
24-lead 4mm × 4mm × 0.75mm QFN Package  
APPLICATIONS  
n
n
n
Ultra-Portable Digital Video Cameras  
Personal Handheld GPS Navigators  
Portable Medical Instruments  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks  
and Hot Swap and PowerPath are trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
V
= 3.3V  
OUT3  
300mA FOR V ≥ 1.8V  
IN  
+
800mA FOR V ≥ 3V  
IN  
2 AA  
10μF  
10μF  
1M  
CELLS  
4.7μH  
Efficiency vs VBAT  
96  
94  
221k  
BUCK-BOOST  
= 150mA  
BAT1 BAT2 SW3A SW3B OUT3  
USB/WALL  
I
OUT  
USB1  
USB2  
FB3  
HSO  
MAX  
LDO  
ADAPTER  
4.3V TO 5.5V  
Hot Swap OUTPUT: 3.3V AT 100mA  
TRACKING OUTPUT: 200mA  
1.8V AT 50mA  
10μF  
C
92  
90  
RS  
4.7μF  
0.1μF  
BUCK2  
4.7μH  
V
OUT2  
ENA1  
ENA2  
ENA3  
I
= 150mA  
OUT  
SW2  
FB2  
1.8V  
DIS ENA  
BUCK1  
= 150mA  
350mA  
10μF  
LTC3101  
221k  
I
OUT  
88  
86  
84  
ON/OFF  
110k  
PWRKEY  
4.7μH  
V
OUT1  
PBSTAT  
PWM  
PWRON  
1.5V  
SW1  
FB1  
350mA  
μP  
10μF  
1.5  
2.5  
3.5  
(V)  
4.5  
5.5  
221k  
147k  
V
RESET  
BAT  
GND  
3101 TA01b  
3101 TA01a  
3101fb  
1
1234567...34

中文翻译

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