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LT1054

更新时间： 2023-12-20 18:46:12
品牌 Logo 应用领域
亚德诺 - ADI 开关电容器转换器稳压器
页数 文件大小 规格书
16页 2055K
描述
具稳压器的开关电容器电压转换器

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中文翻译

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LT1054 数据手册

 浏览型号LT1054的Datasheet PDF文件第2页浏览型号LT1054的Datasheet PDF文件第3页浏览型号LT1054的Datasheet PDF文件第4页浏览型号LT1054的Datasheet PDF文件第5页浏览型号LT1054的Datasheet PDF文件第6页浏览型号LT1054的Datasheet PDF文件第7页 
LT1054/LT1054L  
Switched-Capacitor Voltage  
Converter with Regulator  
FEATURES  
DESCRIPTION  
The LT ®1054 is a monolithic, bipolar, switched-capacitor  
voltage converter and regulator. The LT1054 provides  
higher output current than previously available converters  
with significantly lower voltage losses. An adaptive switch  
driver scheme optimizes efficiency over a wide range of  
output currents. Total voltage loss at 100mA output current  
is typically 1.1V. This holds true over the full supply voltage  
range of 3.5V to 15V. Quiescent current is typically 2.5mA.  
n
Output Current  
n
100mA (LT1054)  
125mA (LT1054L)  
n
n
n
n
Reference and Error Amplifier for Regulation  
Low Loss: 1.1V at 100mA  
Operating Range  
n
3.5V to 15V (LT1054)  
n
3.5V to 7V (LT1054L)  
n
n
n
n
n
External Shutdown  
The LT1054 also provides regulation, a feature not previ-  
ously available in switched-capacitor voltage converters.  
By adding an external resistive divider a regulated output  
can be obtained. This output will be regulated against  
changes in both input voltage and output current. The  
LT1054 can also be shut down by grounding the feedback  
pin. Supply current in shutdown is less than 100µA.  
External Oscillator Synchronization  
Can Be Paralleled  
Pin Compatible with the LTC®1044/ICL7660  
Available in SW16 and SO-8 Packages  
APPLICATIONS  
The internal oscillator of the LT1054 runs at a nominal  
frequency of 25kHz. The oscillator pin can be used to  
adjust the switching frequency or to externally synchro-  
nize the LT1054.  
n
Voltage Inverter  
n
Voltage Regulator  
n
Negative Voltage Doubler  
Positive Voltage Doubler  
n
All registered trademarks and trademarks are the property of their respective owners.  
The LT1054 is pin compatible with previous converters  
such the LTC1044/ICL7660.  
BLOCK DIAGRAM  
ꢇ
Rꢀꢁ  
ꢙ
ꢇ
Iꢂ  
LT1054/LT1054 Voltage Loss  
ꢝ
2
ꢗ.ꢘꢇ  
3.5V ≤ V ≤ 15V (LT1054)  
IN  
RꢀꢁꢀRꢀꢂꢃꢀ  
LT1054L  
3.5V ≤ V ≤ 7V (LT1054L)  
IN  
R
ꢆRIꢇꢀ  
ꢃꢈꢉ  
C
= C  
= 100µF  
OUT  
IN  
INDICATES GUARANTEED  
TEST POINT  
ꢌ
ꢊ
ꢌ
ꢊ
ꢗ
ꢛ
ꢌ
ꢃ
ꢔ
LT1054  
Iꢂ  
Q
ꢚ
ꢁꢀꢀꢆꢍꢈꢃꢎꢏ  
ꢅꢐꢑꢒꢆꢄꢓꢂ  
1
0
ꢄꢅꢃ  
ꢟ
ꢃꢈꢉ  
ꢞ
R
T
T
T
= 125°C  
= 25°C  
= –55°C  
J
J
J
ꢄꢅꢃ  
ꢆRIꢇꢀ  
ꢆRIꢇꢀ  
ꢆRIꢇꢀ  
ꢜ
ꢘ
ꢋꢂꢆ  
ꢌ
ꢔꢀꢕꢒꢀRꢂꢈꢖ ꢃꢈꢉꢈꢃIꢒꢄRꢅ  
ꢃ
ꢔ
0
25  
50  
75  
100  
125  
ꢄꢑꢒ  
OUTPUT CURRENT (mA)  
ꢊꢇ  
ꢄꢑꢒ  
1054 TA01•  
LT1054 • BD  
Rev. I  
1
Document Feedback  
For more information www.analog.com  
1234567...16

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