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LT1965EDD-3.3-TRPBF PDF预览

LT1965EDD-3.3-TRPBF

更新时间： 2024-01-12 19:52:35
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
20页 238K
描述
1.1A, Low Noise, Low Dropout Linear Regulator

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LT1965EDD-3.3-TRPBF 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
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, Tantalum or Aluminum  
Electrolytic Capacitors  
Reverse Battery Protection  
No Reverse Current  
Current Limit with Foldback Protection  
Thermal Limiting  
Output voltage ranges from 1.20V to 19.5V. The LT1965  
regulators are stable with output capacitors as low as  
10μF. Internal protection circuitry includes reverse battery  
protection, currentlimitingwithfoldback, thermallimiting  
and reverse current protection. The LT1965 series are  
available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V,  
andasanadjustabledevicewitha1.20Vreferencevoltage.  
The package offerings include the 5-lead TO-220, 5-lead  
DD-PAK as well as the thermally enhanced 8-lead MSOP  
n
n
n
n
n
5-Lead TO-220, DD-PAK, Thermally Enhanced 8-Lead  
MSOP and 8-Lead 3mm × 3mm DFN Packages  
and low-profile (0.75mm) 8-lead 3mm × 3mm DFN.  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
APPLICATIONS  
n
Logic Power Supplies  
n
Post Regulator for Switching Supplies  
n
Low Noise Instrumentation  
TYPICAL APPLICATION  
Dropout Voltage  
3.3V to 2.5V Regulator  
400  
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, TANTALUM OR  
ALUMINUM ELECTROLYTIC  
1965 TA01  
0
0
0.2  
0.6  
0.8  
1
1.2  
0.4  
OUTPUT CURRENT (A)  
1965 TA01b  
1965fa  
1
1234567...20

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