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LT3050IDDB

更新时间： 2024-01-10 23:34:13
品牌 Logo 应用领域
凌特 - Linear 稳压器调节器光电二极管输出元件
页数 文件大小 规格书
20页 344K
描述
100mA, Low Noise Linear Regulator With Precision Current Limit And Diagnostic Functions

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LT3050IDDB 数据手册

 浏览型号LT3050IDDB的Datasheet PDF文件第2页浏览型号LT3050IDDB的Datasheet PDF文件第3页浏览型号LT3050IDDB的Datasheet PDF文件第4页浏览型号LT3050IDDB的Datasheet PDF文件第5页浏览型号LT3050IDDB的Datasheet PDF文件第6页浏览型号LT3050IDDB的Datasheet PDF文件第7页 
LT3050  
100mA, Low Noise  
Linear Regulator With Precision Current  
Limit And Diagnostic Functions  
DESCRIPTION  
FEATURES  
The LT®3050 is a micro-power, low noise, low dropout  
voltage(LDO)linearregulator. Thedevicesupplies100mA  
n
Output Current: 100mA  
Dropout Voltage: 340mV  
n
n
Input Voltage Range: 1.6V to 45V  
of output current with a dropout voltage of 340mV. A 10nF  
bypass capacitor reduces output noise to 30μV in a  
10Hz to 100kHz bandwidth and soft-starts the reference.  
The LT3050’s 45V input voltage rating combined with its  
precisioncurrentlimitanddiagnosticfunctionsmaketheIC  
an ideal choice for robust, high reliability applications.  
n
n
n
n
Programmable Precision Current Limit: 5ꢀ  
RMS  
Programmable Minimum I  
Monitor  
OUT  
th  
Output Current Monitor: 1/100 of I  
OUT  
Fault Indicator: Current Limit, Minimum I  
or  
OUT  
Thermal Limit  
n
n
n
n
Low Noise: 30μV  
(10Hz to 100kHz)  
RMS  
AsingleresistorprogramstheLT3050’scurrentlimit,accurate  
to 5ꢀ over a wide input voltage and temperature range.  
A single resistor programs the LT3050’s minimum output  
currentmonitor,usefulfordetectingopen-circuitconditions.  
The current monitor function sources a current equal to  
1/100th of output current. A logic FAULT pin asserts low if  
the LT3050 is in current limit, operating below its minimum  
output current (open-circuit) or is in thermal shutdown.  
Adjustable Output (V = V  
= 0.6V)  
REF  
OUT(MIN)  
Output Tolerance: 2ꢀ Over Line, Load and Temperature  
Stable with Low ESR, Ceramic Output Capacitors  
(2.2μF minimum)  
n
n
Shutdown Current: <1μA  
Reverse-Battery, Reverse-Output and  
Reverse-Current Protection  
n
n
Thermal Limit Protection  
The LT3050 optimizes stability and transient response  
with low ESR ceramic capacitors, requiring a minimum  
of 2.2μF. The LT3050 is available as an adjustable device  
with an output voltage range down to the 0.6V reference.  
TheLT3050isavailableinthethermally-enhanced12-Lead  
3mm × 2mm DFN and MSOP packages.  
12-Lead 3mm × 2mm DFN and MSOP Packages  
APPLICATIONS  
n
Protected Antenna Supplies  
Automotive Telematics  
n
n
Industrial Applications (Trucks, Forklifts, etc.)  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
n
High Reliability Applications  
Technology Corporation. All other trademarks are the property of their respective owners.  
External Current Limit  
RIMAX = 1.15k  
TYPICAL APPLICATION  
105  
5V Supply with 100mA Precision Current Limit, 10mA IMIN  
V
= 5V  
OUT  
104  
103  
102  
101  
100  
99  
IN  
OUT  
5V  
1ꢀ  
442k  
V
IN  
= 15V  
12V  
IN  
SHDN  
2.2ꢁF  
1ꢁF  
120k  
V
ADJ  
FAULT  
1ꢀ  
60.4k  
V
V
= 12V  
IN  
IN  
LT3050  
I
MAX  
I
= 5.6V  
TO ꢁP ADC  
0.1ꢁF  
MON  
98  
1.15k  
10nF  
3k  
(THRESHOLD = 100mA)  
97  
(ADC FULL SCALE = 3V)  
96  
I
REF/BYP  
MIN  
11.3k  
95  
0.1ꢁF  
GND  
–75 –50 –25  
0
–25 50 75 100 125 150 175  
10nF  
(THRESHOLD = 10mA)  
TEMPERATURE (°C)  
3050 TA01  
3050 TA01a  
3050f  
1
1234567...20

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LT3050IDDB 替代型号

型号 品牌 替代类型 描述 数据表
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