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LT3032EDETR

更新时间： 2024-09-13 05:43:31
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
20页 290K
描述
Dual 150mA Positive/Negative Low Noise Low Dropout Linear Regulator

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LT3032EDETR 数据手册

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LT3032  
Dual 150mA  
Positive/Negative Low Noise  
Low Dropout Linear Regulator  
DESCRIPTION  
FEATURES  
TheLT®3032isadual, lownoise, positiveandnegativelow  
dropout voltage linear regulator. Each regulator delivers  
up to 150mA with a typical 300mV dropout voltage. Each  
regulator’s quiescent current is low (30μA operating and  
<3μAinshutdown)andwell-controlledindropout,making  
it an excellent choice for battery-powered circuits.  
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Low Noise: 20μV  
(Positive) and  
RMS  
30μV  
(Negative)  
RMS  
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Low Quiescent Current: 30μA/Channel  
Wide Input Voltage Range: 2ꢀ3V to 20V  
Output Current: 150mA  
Low Shutdown Current: <3μA Total (Typical)  
Low Dropout Voltage: 300mV/Channel  
Adjustable Outputs from 1.22V to 20V  
No Protection Diodes Needed  
Another key feature of the LT3032 is low output noise.  
Addinganexternal10nFbypasscapacitortoeachregulator  
reducesoutputnoiseto20μV  
30μV  
overa10Hzto  
RMS/  
RMS  
Stable with 2.2μF Output Capacitors  
Stable with Ceramic, Tantalum or Aluminum Capacitors  
Starts into Reverse Output Voltage  
Current Limit and Thermal Limit  
100kHz bandwidth. The LT3032 is stable with minimum  
output capacitors of 2.2μF. The regulators do not require  
the addition of ESR as is common with other regulators.  
Internal protection circuitry includes reverse output prot-  
ection,currentlimiting,andthermallimiting.Eachregulator  
is offered as an adjustable output device with an output  
voltage down to the 1.22V reference voltages.  
Low Profile 14-Lead 4mm × 3mm × 0.75mm  
DFN Package  
APPLICATIONS  
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Battery-Powered Instruments  
The LT3032 is available in a unique low profile 14-lead  
4mm × 3mm × 0.75mm DFN package with exposed back-  
side pads for each regulator, allowing optimum thermal  
performance.  
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Bipolar Power Supplies  
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Low Noise Power Supplies  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Dual Polarity Low Noise 150mA Power Supply  
10Hz to 100kHz Output Noise  
LT3032  
OUTP  
5V OUT AT 150mA  
20μV NOISE  
INP  
RMS  
OUTP  
768k  
249k  
5.4V TO  
20V  
20μV  
30μV  
RMS  
100μV/DIV  
0.01μF  
ADJP  
10μF  
10μF  
10μF  
<0.25V = OFF  
>2V = ON  
SHDNP  
BYPP  
GND  
OUTN  
100μV/DIV  
RMS  
BYPN  
SHDNN  
10μF  
249k  
768k  
3032 TA02a  
1mS/DIV  
ADJN  
0.01μF  
–5.4V TO  
–20V  
–5V OUT AT –150mA  
30μV NOISE  
INN  
OUTN  
RMS  
3032 TA01  
3032f  
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