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LTC3290 PDF预览

LTC3290

更新时间: 2024-11-06 02:50:19
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
14页 1441K
描述
High Voltage Boost Charge Pump

LTC3290 数据手册

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LTC3290  
High Voltage Boost  
Charge Pump  
FEATURES  
DESCRIPTION  
The LTC®3290 is a high voltage boost charge pump with  
a wide 4.5V to 55V input voltage range that can deliver  
up to 50mA of output current.  
n
Wide Input Range: 4.5V to 55V V /V  
IN AUX  
n
n
n
n
n
n
n
n
Reverse Input Protection to –55V  
Split Input Supplies for High Efficiency Boost Ratios  
I
Up to 50mA  
OUT  
When the V  
pin is grounded, the LTC3290 operates  
SET  
15µA V Quiescent Current  
IN  
as a standard boost charge pump, boosting the V  
OUT  
1µA V  
Quiescent Current  
AUX  
output to a maximum of the sum of the V and V  
IN  
AUX  
Stable with Ceramic Capacitors  
input supplies. An external resistor divider can be used  
Short-Circuit/Thermal Protection  
Thermally Enhanced 10-Pin MSOP Package  
on the V , FB and GND pins to set the output voltage  
OUT  
to any value between 1V and V + V  
Burst Mode operation.  
with hysteretic  
IN  
AUX  
APPLICATIONS  
Alternatively,thedevicecanbeconfiguredinaV tracking  
IN  
n
High Efficiency General Purpose High Voltage Boost  
mode, in which the V  
pin regulates at a fixed offset  
OUT  
Supplies  
above the V pin. The offset voltage is programmed with  
IN  
n
High Side N-FET Driver  
external resistors, one from the V  
to the V pin and  
OUT  
SET  
n
Industrial/Automotive Power Switching  
the other from the FB pin to GND. The maximum output  
n
V Tracking Supply  
IN  
voltage is limited to V + V  
.
AUX  
IN  
The LTC3290 is available in a thermally enhanced 10-pin  
MSOP package.  
All registered trademarks and trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
15V Output from a 12V Input (with 5V Auxiliary Input)  
Standard Boost Charge Pump Mode, VSET = 0V  
Efficiency vs Output Current  
ꢑ0  
ꢒ0  
ꢖ0  
ꢓ0  
ꢗ0  
ꢔ0  
ꢘ0  
ꢕ0  
ꢄꢋꢌ  
ꢕꢙ  
ꢕꢘ  
ꢄꢅꢀ  
ꢅꢀ  
ꢁꢂꢃ  
ꢇꢂꢛ  
ꢜꢒ  
0ꢆꢇ ꢃꢁ ꢈ0ꢆꢇ  
ꢄ0ꢋꢌ  
ꢄ0ꢋꢌ  
ꢄ0ꢋꢌ  
ꢕꢖꢈꢗ0  
ꢄ.ꢉꢊ  
ꢄꢈꢀ  
ꢎꢏꢃ  
ꢌꢐ  
ꢜ ꢙꢕꢈ  
ꢜ ꢗꢈ  
ꢂꢄ  
ꢏꢒ  
ꢙ0  
0
ꢎꢊꢏ  
ꢉꢊꢋ  
ꢜ ꢙꢗꢈ  
ꢐꢜꢇꢎ  
ꢚꢑꢁꢁꢓ  
ꢄ00ꢍ  
ꢑꢒꢓ  
ꢉ.ꢝꢋꢌ  
ꢖꢈꢗ0 ꢃꢇ0ꢄ  
0.0ꢙ  
0.ꢙ  
ꢙ0 ꢕ0  
ꢆꢚꢎꢐ  
ꢉꢊꢋ  
ꢘꢕꢑ0 ꢋꢎ0ꢙꢛ  
Rev. 0  
1
Document Feedback  
For more information www.analog.com  

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