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LT1761

更新时间： 2024-10-05 14:58:03
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
22页 1159K
描述
采用 SOT-23 封装的 100mA、低噪声、LDO 微功率稳压器

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中文翻译

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LT1761 数据手册

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LT1761 Series  
100mA, Low Noise,  
LDO Micropower  
Regulators in TSOT-23  
FEATURES  
DESCRIPTION  
The LT®1761 series are micropower, low noise, low  
dropout regulators. With an external 0.01μF bypass  
n
Low Noise: 20μV  
(10Hz to 100kHz)  
RMS  
n
Low Quiescent Current: 20μA  
Wide Input Voltage Range: 1.8V to 20V  
Output Current: 100mA  
Very Low Shutdown Current: <0.1μA  
Low Dropout Voltage: 300mV at 100mA  
Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V,  
2.8V, 3V, 3.3V, 5V  
n
n
n
n
n
capacitor, output noise drops to 20μV  
over a 10Hz to  
RMS  
100kHz bandwidth. Designed for use in battery-powered  
systems, the low 20μA quiescent current makes them an  
ideal choice. In shutdown, quiescent current drops to less  
than 0.1μA. The devices are capable of operating over an  
input voltage from 1.8V to 20V, and can supply 100mA of  
outputcurrentwithadropoutvoltageof300mV.Quiescent  
current is well controlled, not rising in dropout as it does  
with many other regulators.  
n
n
n
Adjustable Output from 1.22V to 20V  
Stable with 1μF Output Capacitor  
Stable with Aluminum, Tantalum or  
Ceramic Capacitors  
TheLT1761regulatorsarestablewithoutputcapacitorsas  
low as 1μF. Small ceramic capacitors can be used without  
the series resistance required by other regulators.  
n
n
n
n
n
Reverse-Battery Protected  
No Reverse Current  
No Protection Diodes Needed  
Internal protection circuitry includes reverse battery  
protection, current limiting, thermal limiting and reverse  
current protection. The device is available in fixed output  
voltages of 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V and  
5V, and as an adjustable device with a 1.22V reference  
voltage. The LT1761 regulators are available in the 5-lead  
TSOT-23 package.  
Overcurrent and Overtemperature Protected  
Available in Tiny 5-Lead TSOT-23 Package  
APPLICATIONS  
n
Cellular Phones  
n
Pagers  
n
Battery-Powered Systems  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
n
Frequency Synthesizers  
n
Wireless Modems  
TYPICAL APPLICATION  
10Hz to 100kHz Output Noise  
5V Low Noise Regulator  
5V AT100mA  
20μV NOISE  
10μF  
IN  
OUT  
BYP  
V
RMS  
IN  
+
V
OUT  
5.4V TO  
20V  
1μF  
0.01μF  
LT1761-5  
20μV  
RMS  
100μV/DIV  
SHDN  
GND  
1761 TA01  
1761 TA01b  
1761sff  
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