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LT1764_1

更新时间： 2024-11-13 05:43:27
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
20页 278K
描述
3A, Fast Transient Response, Low Noise,LDO Regulators

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LT1764_1 数据手册

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LT1764 Series  
3A, Fast Transient  
Response, Low Noise,  
LDO Regulators  
U
FEATURES  
DESCRIPTIO  
The LT®1764 is a low dropout regulator optimized for fast  
transient response. The device is capable of supplying 3A  
of output current with a dropout voltage of 340mV. Oper-  
ating quiescent current is 1mA, dropping to <1µA in  
shutdown. Quiescentcurrentiswellcontrolled;itdoesnot  
rise in dropout as it does with many other regulators. In  
addition to fast transient response, the LT1764 has very  
low output voltage noise which makes the device ideal for  
sensitive RF supply applications.  
■
Optimized for Fast Transient Response  
■
Output Current: 3A  
■
Dropout Voltage: 340mV at 3A  
■
Low Noise: 40µVRMS (10Hz to 100kHz)  
■
■
■
■
■
■
■
■
■
■
■
■
1mA Quiescent Current  
Wide Input Voltage Range: 2.7V to 20V  
No Protection Diodes Needed  
Controlled Quiescent Current in Dropout  
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V  
Adjustable Output from 1.21V to 20V  
<1µA Quiescent Current in Shutdown  
Stable with 10µF Output Capacitor  
Reverse Battery Protection  
Output voltage range is from 1.21V to 20V. The LT1764  
regulatorsarestablewithoutputcapacitorsaslowas10µF.  
Internal protection circuitry includes reverse battery pro-  
tection, current limiting, thermal limiting and reverse cur-  
rent protection. The device is available in fixed output  
voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable  
device with a 1.21V reference voltage. The LT1764 regu-  
lators are available in 5-lead TO-220, DD and Exposed Pad  
16-lead TSSOP packages.  
No Reverse Current  
Thermal Limiting  
Available in 5-Lead TO-220, DD and 16-Lead  
TSSOP Packages  
U
APPLICATIO S  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners. Protected by U.S. Patents,  
including 6144250, 6118263.  
■
3.3V to 2.5V Logic Power Supply  
Post Regulator for Switching Supplies  
■
U
TYPICAL APPLICATIO  
Dropout Voltage  
400  
350  
300  
250  
200  
150  
100  
50  
3.3V to 2.5V  
Regulator  
OUT  
IN  
2.5V  
3A  
IN  
OUT  
+
+
V
IN  
> 3V  
10µF  
10µF  
LT1764-2.5  
SHDN SENSE  
GND  
1764 TA01  
0
2.5  
0
0.5  
1.0  
1.5  
2.0  
3.0  
LOAD CURRENT (A)  
1764 TA02  
1764fb  
1
1234567...20

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