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LT1964ES5-5#PBF

更新时间： 2024-11-28 10:01:47
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
16页 224K
描述
200mA, Low Noise, Low Dropout Negative Micropower Regulator

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LT1964ES5-5#PBF 数据手册

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LT1964  
200mA, Low Noise,  
Low Dropout Negative  
Micropower Regulator  
FEATURES  
DESCRIPTION  
TheLT®1964isamicropowerlownoise,lowdropoutnega-  
tive regulator. The device is capable of supplying 200mA  
of output current with a dropout voltage of 340mV. Low  
quiescent current (30μA operating and 3μA shutdown)  
makes the LT1964 an excellent choice for battery-pow-  
ered applications. Quiescent current is well controlled in  
dropout.  
n
Low Noise: 30μV  
(10Hz to 100kHz)  
RMS  
n
Low Quiescent Current: 30μA  
Low Dropout Voltage: 340mV  
Output Current: 200mA  
n
n
n
n
n
n
n
n
Fixed Output Voltage: –5V  
Adjustable Output from –1.22V to –20V  
Positive or Negative Shutdown Logic  
3μA Quiescent Current in Shutdown  
Stable with 1μF Output Capacitor  
Stable with Aluminum, Tantalum, or Ceramic  
Capacitors  
Thermal Limiting  
Low Profile (1mm) ThinSOT™ and (0.75mm) 8-Pin  
3mm × 3mm DFN Packages  
Other features of the LT1964 include low output noise.  
With the addition of an external 0.01μF bypass capacitor,  
outputnoiseisreducedto30μV  
overa10Hzto100kHz  
RMS  
bandwidth. The LT1964 is capable of operating with small  
capacitors and is stable with output capacitors as low  
as 1μF. Small ceramic capacitors can be used without  
the necessary addition of ESR as is common with other  
regulators. Internal protection circuitry includes reverse  
output protection, current limiting, and thermal limiting.  
The device is available with a fixed output voltage of –5V  
and as an adjustable device with a –1.22V reference volt-  
age. The LT1964 regulators are available in a low profile  
(1mm) ThinSOT and the low profile (0.75mm) 8-pin  
(3mm × 3mm) DFN packages.  
n
n
APPLICATIONS  
n
Battery-Powered Instruments  
n
Low Noise Regulator for Noise-Sensitive  
Instrumentation  
n
Negative Complement to LT1761 Family of  
Positive LDOs  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ThinSOT is  
a trademark of Linear Technology Corporation. All other trademarks are the property of their  
respective owners.  
TYPICAL APPLICATION  
10Hz to 100kHz Output Noise  
–5V Low Noise Regulator  
1μF  
10μF  
GND  
V
OUT  
30μV  
RMS  
SHDN  
BYP  
OUT  
V
100μV/DIV  
IN  
–5.4V  
0.01μF  
LT1964-5  
TO –20V  
IN  
–5V AT 200mA  
30μV  
NOISE  
RMS  
1964 TA01a  
1964 TA01b  
1ms/DIV  
1964fb  
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