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LAEX

更新时间： 2024-10-19 03:50:23
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
16页 208K
描述
100mA, Low Voltage, Very Low Dropout Linear Regulator

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中文翻译

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LAEX 数据手册

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LT3020/LT3020-1.2/  
LT3020-1.5/LT3020-1.8  
100mA, Low Voltage,  
Very Low Dropout  
Linear Regulator  
U
DESCRIPTIO  
FEATURES  
The LT®3020 is a very low dropout voltage (VLDOTM) linear  
regulator that operates from input supplies down to 0.9V.  
This device supplies 100mA of output current with a  
typical dropout voltage of 150mV. The LT3020 is ideal for  
low input voltage to low output voltage applications,  
providing comparable electrical efficiency to that of a  
switching regulator.  
■
VIN Range: 0.9V to 10V  
■
Minimum Input Voltage: 0.9V  
■
Dropout Voltage: 150mV Typical  
Output Current: 100mA  
■
■
Adjustable Output (VREF = VOUT(MIN) = 200mV)  
■
Fixed Output Voltages: 1.2V, 1.5V, 1.8V  
■
Stable with Low ESR, Ceramic Output Capacitors  
(2.2µF Minimum)  
The LT3020 regulator optimizes stability and transient  
response with low ESR, ceramic output capacitors as  
small as 2.2µF. Other LT3020 features include 0% line  
regulation and 0.2% typical load regulation. In shutdown,  
quiescent current typically drops to 3µA.  
■
0.2% Load Regulation from 0mA to 100mA  
■
Quiescent Current: 120µA (Typ)  
■
3µA Typical Quiescent Current in Shutdown  
■
Current Limit Protection  
■
Reverse-Battery Protection  
■
Internal protection circuitry includes reverse-battery pro-  
tection, current limiting, thermal limiting with hysteresis,  
andreverse-currentprotection. TheLT3020isavailableas  
an adjustable output device with an output range down to  
the 200mV reference. Three fixed output voltages, 1.2V,  
1.5V and 1.8V, are also available.  
No Reverse Current  
■
Thermal Limiting with Hysteresis  
■
8-Lead DFN (3mm × 3mm) and MSOP Packages  
U
APPLICATIO S  
■
Low Current Regulators  
■
Battery-Powered Systems  
The LT3020 regulator is available in the low profile  
(0.75mm) 8-lead (3mm × 3mm) DFN package with ex-  
posed pad and the 8-lead MSOP package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
VLDO is a trademark of Linear Technology Corporation.  
■
Cellular Phones  
■
Pagers  
■
Wireless Modems  
U
TYPICAL APPLICATIO  
Minimum Input Voltage  
1.8V to 1.5V, 100mA VLDO Regulator  
1.1  
I
= 100mA  
L
1.0  
0.9  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
V
OUT  
V
IN  
IN  
OUT  
LT3020-1.5  
SHDN  
GND  
1.5V  
1.8V  
100mA  
2.2µF  
2.2µF  
3020 TA01  
–50 –25  
0
25  
50  
75 100 125  
TEMPERATURE (°C)  
3020 TA02  
sn3020 3020fas  
1
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