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LT1965IQ-1.8#PBF

更新时间： 2024-11-16 05:32:35
品牌 Logo 应用领域
亚德诺 - ADI 输出元件调节器
页数 文件大小 规格书
22页 974K
描述
LT1965 - 1.1A, Low Noise, Low Dropout Linear Regulator; Package: DD PAK; Pins: 5; Temperature Range: -40°C to 85°C

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LT1965IQ-1.8#PBF 数据手册

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LT1965 Series  
1.1A, Low Noise,  
Low Dropout Linear Regulator  
Features  
Description  
TheLT®1965seriesarelownoise, lowdropoutlinearregu-  
lators. The devices supply 1.1A of output current with a  
310mVtypicaldropoutvoltage.Operatingquiescentcurrent  
is 500µA for the adjustable version, reducing to <1µA in  
shutdown. Quiescentcurrentiswellcontrolled;itdoesnot  
rise in dropout as with many other regulators. The LT1965  
regulators have very low output noise which makes them  
ideal for sensitive RF and DSP supply applications.  
n
Output Current: 1.1A  
n
Dropout Voltage: 310mV  
n
Low Noise: 40µV  
(10Hz to 100kHz)  
RMS  
n
n
n
n
n
n
n
n
n
n
n
n
n
n
500µA Quiescent Current (Adjustable Version)  
Wide Input Voltage Range: 1.8V to 20V  
No Protection Diodes Needed  
Controlled Quiescent Current in Dropout  
Adjustable Output from 1.20V to 19.5V  
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V  
< 1µA Quiescent Current in Shutdown  
Stable with 10µF Output Capacitor  
Stable with Ceramic or Tantalum Capacitors  
Reverse-Battery Protection  
No Reverse Current  
Current Limit with Foldback Protection  
Thermal Limiting  
5-Lead TO-220, DD-Pak, Thermally Enhanced 8-Lead  
MSOP and 8-Lead 3mm × 3mm DFN Packages  
Output voltage ranges from 1.20V to 19.5V. The LT1965  
regulators are stable with output capacitors as low as  
10µF.Internalprotectioncircuitryincludesreverse-battery  
protection, current limiting with foldback, thermal limit-  
ing and reverse-current protection. The LT1965 series  
are available in fixed output voltages of 1.5V, 1.8V, 2.5V,  
3.3V, and as an adjustable device with a 1.20V reference  
voltage. The package offerings include the 5-lead TO-220,  
5-lead DD-Pak as well as the thermally enhanced 8-lead  
MSOPandlowprofile(0.75mm)8-lead3mm× 3mmDFN.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property  
of their respective owners.  
applications  
n
Logic Power Supplies  
Post Regulator for Switching Supplies  
n
n
Low Noise Instrumentation  
typical application  
Dropout Voltage  
400  
3.3V to 2.5V Regulator  
T = 25°C  
J
350  
300  
250  
200  
150  
100  
50  
2.5V  
1.1A  
IN  
OUT  
LT1965-2.5  
+
> 3V  
+
V
IN  
10µF*  
10µF*  
TO 20V  
SHDN SENSE  
GND  
*CERAMIC OR TANTALUM  
1965 TA01  
0
0
0.2  
0.6  
0.8  
1
1.2  
0.4  
OUTPUT CURRENT (A)  
1965 TA01b  
1965fb  
1
For more information www.linear.com/LT1965  
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