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LT1123CST#TR PDF预览

LT1123CST#TR

更新时间: 2024-11-23 19:22:23
品牌 Logo 应用领域
凌特 - Linear 光电二极管输出元件调节器
页数 文件大小 规格书
16页 153K
描述
LT1123 - Low Dropout Regulator Driver; Package: SOT; Pins: 3; Temperature Range: 0°C to 70°C

LT1123CST#TR 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:SOT包装说明:SOP,
针数:3Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.17最大回动电压 1:0.75 V
最大输入电压:7.2 V最小输入电压:5.4 V
JESD-30 代码:R-PDSO-G4JESD-609代码:e0
长度:6.505 mm湿度敏感等级:1
功能数量:1端子数量:4
工作温度TJ-Max:125 °C工作温度TJ-Min:
最大输出电流 1:4 A最大输出电压 1:5.05 V
最小输出电压 1:4.95 V标称输出电压 1:5 V
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):235认证状态:Not Qualified
调节器类型:FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR座面最大高度:1.8 mm
表面贴装:YES技术:BIPOLAR
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:2.3 mm端子位置:DUAL
处于峰值回流温度下的最长时间:20宽度:3.505 mm
Base Number Matches:1

LT1123CST#TR 数据手册

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LT1123  
Low Dropout  
Regulator Driver  
U
FEATURES  
DESCRIPTIO  
The LT®1123 is a 3-pin bipolar device designed to be used  
in conjunction with a discrete PNP power transistor to  
form an inexpensive low dropout regulator. The LT1123  
consists of a trimmed bandgap reference, error amplifier,  
and a driver circuit capable of sinking up to 125mA from  
the base of the external PNP pass transistor. The LT1123  
is designed to provide a fixed output voltage of 5V.  
Extremely Low Dropout  
Low Cost  
Fixed 5V Output, Trimmed to ±1%  
700µA Quiescent Current  
1mV Line Regulation  
5mV Load Regulation  
Thermal Limit  
4A Output Current Guaranteed  
The drive pin of the device can pull down to 2V at 125mA  
(1.4V at 10mA). This allows a resistor to be used to reduce  
the base drive available to the PNP and minimize the  
power dissipation in the LT1123. The drive current of the  
LT1123 is folded back as the feedback pin approaches  
ground to further limit the available drive current under  
short-circuit conditions.  
Available in a 3-Pin TO-92 Package  
Total quiescent current for the LT1123 is only 700µA. The  
device is available in a low cost TO-92 package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
U
TYPICAL APPLICATIO  
5V Low Dropout Regulator  
Dropout Voltage  
0.5  
620  
20Ω  
SEALED  
LEAD ACID  
5.4 TO 7.2V  
+
MOTOROLA  
MJE1123  
10µF*  
0.4  
0.3  
0.2  
0.1  
0
DRIVE  
*REQUIRED IF DEVICE IS  
MORE THAN 6" FROM MAIN  
FILTER CAPACITOR  
REQUIRED FOR STABILITY  
(LARGER VALUES INCREASE  
STABILITY)  
OUTPUT = 5V/4A  
LT1123 FB  
GND  
+
10µF†  
LT1123 TA01  
0
1
2
3
4
5
OUTPUT CURRENT (A)  
LT1123 TA02  
1123fb  
1

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