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LT3015EQ

更新时间： 2024-11-29 12:19:15
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
20页 427K
描述
1.5A, Low Noise, Negative Linear Regulator with Precision Current Limit

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LT3015EQ 数据手册

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LT3015  
1.5A, Low Noise,  
Negative Linear Regulator  
with Precision Current Limit  
DESCRIPTION  
The LT®3015 is a low noise, low dropout, negative linear  
regulatorwithfasttransientresponse.Thedevicesupplies  
up to 1.5A of output current at a typical dropout voltage  
of 310mV. Operating quiescent current is typically 1.1mA  
and drops to < 1μA in shutdown. Quiescent current is also  
well controlled in dropout. In addition to fast transient  
response, the LT3015 exhibits very low output noise,  
making it ideal for noise sensitive applications.  
FEATURES  
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Output Current: 1.5A  
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Dropout Voltage: 310mV  
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Precision Current Limit with Foldback  
Low Output Noise: 60μV  
Low Quiescent Current: 1.1mA  
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(10Hz to 100kHz)  
RMS  
n
n
n
n
n
n
n
n
n
n
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Precision Positive or Negative Shutdown Logic  
Fast Transient Response  
Wide Input Voltage Range: –1.8V to –30V  
Adjustable Output Voltage Range: –1.22V to –29.5V  
Controlled Quiescent Current in Dropout  
< 1μA Quiescent Current in Shutdown  
Stable with 10μF Output Capacitor  
Stable with Ceramic, Tantalum or Aluminum Capacitors  
Thermal Limit with Hysteresis  
Reverse Output Protection  
TheLT3015regulatorisstablewithaminimum10μFoutput  
capacitor. Moreover, the regulator can use small ceramic  
capacitors without the necessary addition of ESR as is  
commonwithotherregulators.Internalprotectioncircuitry  
includes reverse output protection, precision current limit  
with foldback and thermal limit with hysteresis.  
The LT3015 is available as an adjustable device with a  
–1.22V reference voltage. Packages include the 5-lead  
TO-220 and DD-Pak, a thermally enhanced 12-lead MSOP  
and the low profile (0.75 mm) 8-lead 3mm × 3mm DFN.  
5-Lead TO-220 and DD-Pak, Thermally Enhanced  
12-Lead MSOP and 8-Lead 3mm × 3mm × 0.75mm  
DFN Packages  
APPLICATIONS  
L, LT, LTC, LTM, ThinSOT, Linear Technology and the Linear logo are registered trademarks of  
Linear Technology Corporation. All other trademarks are the property of their respective owners.  
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Post-Regulator for Switching Supplies  
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Negative Logic Supplies  
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Low Noise Instrumentation  
Industrial Supplies  
Negative Complement to the LT1963A  
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Dropout Voltage  
TYPICAL APPLICATION  
450  
T
= 25°C  
J
–5V, –1.5A, Low-Noise Regulator  
400  
350  
300  
250  
200  
150  
100  
50  
GND  
DD-PAK/TO-220  
3.40k  
1%  
LT3015  
10μF  
10μF  
V
–5V  
–1.5A  
SHDN  
ADJ  
DFN/MSOP  
10.5k  
1%  
V
IN  
OUT  
IN  
OUT  
–5.5V TO  
–30V  
3015 TA01  
0
0
–0.2 –0.4 –0.6 –0.8 –1.0 –1.2 –1.4 –1.6  
LOAD CURRENT (A)  
3015 TA01a  
3015f  
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