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LTC660

更新时间： 2024-11-22 14:57:35
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
12页 232K
描述
100mA CMOS 电压转换器

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中文翻译

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LTC660 数据手册

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LTC660  
100mA CMOS  
Voltage Converter  
U
FEATURES  
DESCRIPTION  
The LTC®660 is a monolithic CMOS switched-capacitor  
voltage converter. It performs supply voltage conversion  
from positive to negative from an input range of 1.5V to  
5.5V, resulting in complementary output voltages of  
–1.5V to –5.5V. It also performs a doubling at an input  
voltage range of 2.5V to 5.5V, resulting in a doubled  
output voltage of 5V to 11V. Only two external capacitors  
are needed for the charge pump and charge reservoir  
functions.  
■
Simple Conversion of 5V to –5V Supply  
■
Output Drive: 100mA  
■
ROUT: 6.5Ω (0.65V Loss at 100mA)  
■
■
■
BOOST Pin (Pin 1) for Higher Switching Frequency  
Inverting and Doubling Modes  
Minimum Open Circuit Voltage Conversion  
Efficiency: 99%  
■
■
Typical Power Conversion Efficiency  
with a 100mA Load: 88%  
Easy to Use  
The converter has an internal oscillator that can be  
overdriven by an external clock or slowed down when  
connected to a capacitor. The oscillator runs at a 10kHz  
frequency when unloaded. A higher frequency outside the  
audio band can also be obtained if the BOOST pin is tied  
to V+.  
U
APPLICATIONS  
■
Conversion of 5V to ±5V Supplies  
■
Inexpensive Negative Supplies  
■
Data Acquisition Systems  
High Current Upgrade to LTC1044 or LTC7660  
■
TheLTC660containsaninternaloscillator, divide-by-two,  
voltage level shifter and four power MOSFETs.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Output Voltage vs  
Generating –5V from 5V  
Load Current for V+ = 5V  
–5.0  
1
2
3
4
8
7
6
5
+
5V INPUT  
BOOST  
V
T
= 25°C  
OUT  
A
R
= 6.5Ω  
+
CAP  
OSC  
LV  
–4.8  
–4.6  
–4.4  
–4.2  
–4.0  
+
LTC660  
C1  
150µF  
GND  
–
–5V  
OUTPUT  
CAP  
V
OUT  
C2  
150µF  
+
660 TA01  
0
20  
40  
60  
80  
100  
LOAD CURRENT (mA)  
660 TA02  
1
1234567...12

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LTC6601CUF-2PBF Linear

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