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LTC3250-1.2 PDF预览

LTC3250-1.2

更新时间： 2024-11-10 02:53:03
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

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LTC3250-1.2 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  
ꢔꢃꢕꢖꢈꢗ0  
ꢄ.ꢉꢊ  
ꢄꢈꢀ  
ꢀ
ꢎꢏꢃ  
ꢌꢐ  
ꢈ
ꢈ
ꢈ
ꢜ ꢙꢕꢈ  
ꢜ ꢗꢈ  
ꢂꢄ  
ꢏꢒ  
ꢙ0  
0
ꢎꢊꢏ  
ꢉꢊꢋ  
ꢜ ꢙꢗꢈ  
ꢐꢜꢇꢎ  
ꢚꢑꢁꢁꢓ  
ꢄ00ꢍ  
ꢑꢒꢓ  
ꢉ.ꢝꢋꢌ  
ꢖꢈꢗ0 ꢃꢇ0ꢄ  
0.0ꢙ  
0.ꢙ  
ꢙ
ꢙ0 ꢕ0  
ꢂ
ꢆꢚꢎꢐ  
ꢉꢊꢋ  
ꢘꢕꢑ0 ꢋꢎ0ꢙꢛ  
Rev. 0  
1
Document Feedback  
For more information www.analog.com  
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