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LT1528CT

更新时间： 2024-11-25 22:55:51
品牌 Logo 应用领域
凌特 - Linear 稳压器调节器微处理器输出元件局域网
页数 文件大小 规格书
12页 249K
描述
3A Low Dropout Regulator for Microprocessor Applications

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中文翻译

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LT1528CT 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：TO-220包装说明：TO-220, ZIP5,.15,.2,67TB
针数：5Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.12可调性：FIXED
最大回动电压 1：0.85 V标称回动电压 1：0.57 V
最大绝对输入电压：15 VJESD-30 代码：R-PSFM-T5
JESD-609代码：e0最大电网调整率：0.01%
最大负载调整率：0.03%湿度敏感等级：1
功能数量：1输出次数：1
端子数量：5工作温度TJ-Max：125 °C
工作温度TJ-Min：最大输出电流 1：3 A
最大输出电压 1：14 V最小输出电压 1：3.3 V
标称输出电压 1：3.3 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-220封装等效代码：ZIP5,.15,.2,67TB
封装形状：RECTANGULAR封装形式：FLANGE MOUNT
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
调节器类型：FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR子类别：Other Regulators
表面贴装：NO技术：BIPOLAR
端子面层：Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier端子形式：THROUGH-HOLE
端子节距：1.7 mm端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT SPECIFIED最大电压容差：3%
Base Number Matches：1

LT1528CT 数据手册

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U
FEATURES  
DESCRIPTION  
The LT®1528 is a 3A low dropout regulator optimized to  
handle the large load current transients associated with  
the current generation of microprocessors. This device  
has the fastest transient response of currently available  
PNP regulators and is very tolerant of variations in capaci-  
tor ESR. Dropout voltage is 75mV at 10mA, rising to  
300mVat1Aand600mVat3A. Thedevicehasaquiescent  
current of 400µA. Quiescent current is well controlled; it  
does not increase significantly as the device enters drop-  
out. The regulator can operate with output capacitors as  
small as 3.3µF, although larger capacitors will be needed  
toachievetheperformancerequiredinmostmicroproces-  
sor applications. The LT1528 is available with a fixed  
output voltage of 3.3V. An external Sense pin allows  
adjustment to output voltages greater than 3.3V, using a  
simple resistive divider. This allows the device to be  
adjusted over a wide range of output voltages, including  
the 3.3V to 4.2V range required by a variety of processors  
from Intel, IBM, AMD, and Cyrix.  
■
Dropout Voltage: 0.6V at IOUT = 3A  
■
Fast Transient Response  
■
Output Current: 3A  
■
Quiescent Current: 400µA  
■
No Protection Diodes Needed  
Fixed Output Voltage: 3.3V  
Controlled Quiescent Current in Dropout  
■
■
■
Shutdown IQ = 125µA  
■
Stable with 3.3µF Output Capacitor  
■
Reverse Battery Protection  
■
No Reverse Output Current  
Thermal Limiting  
■
U
APPLICATIONS  
■
Microprocessor Applications  
■
Post Regulator for Switching Supplies  
■
5V to 3.3V Logic Regulator  
The LT1528 has both reverse input and reverse output  
protection and includes a shutdown feature. Quiescent  
current drops to 125µA in shutdown. The LT1528 is  
available in 5-lead TO-220 and 5-lead DD packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Dropout Voltage  
Microprocessor Supply with Shutdown  
0.6  
5
1
V
OUT  
IN  
OUT  
0.5  
+
4 × 47µF*  
SOLID TANTALUM  
15Ω  
68Ω  
J3  
V
=5V  
LT1528  
IN  
0.4  
0.3  
0.2  
0.1  
0
J1  
J2  
4
2
SHDN  
SENSE  
GND  
3
330Ω  
*CHOOSE CAPACITORS  
TO MEET PROCESSOR  
REQUIREMENTS  
V
(PIN 4)  
<0.25  
>2.80  
NC  
OUTPUT  
SHORTING  
V
SHDN  
OUT  
OFF  
ON  
ON  
J1  
J2  
J3  
3.30  
3.45  
4.00  
LT1528 • TA01  
0
1.0  
1.5  
2.0  
2.5  
3.0  
0.5  
OUTPUT CURRENT (mA)  
LT1528 • TA02  
1
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中文翻译

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