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LT1123CST#TRPBF PDF预览

LT1123CST#TRPBF

更新时间: 2024-11-23 13:09:35
品牌 Logo 应用领域
凌特 - Linear 稳压器驱动
页数 文件大小 规格书
12页 242K
描述
LT1123 - Low Dropout Regulator Driver; Package: SOT; Pins: 3; Temperature Range: 0°C to 70°C

LT1123CST#TRPBF 技术参数

是否Rohs认证:符合生命周期:Transferred
零件包装代码:SOT包装说明:SOP,
针数:3Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.18Is Samacsys:N
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 VJESD-30 代码:R-PDSO-G4
JESD-609代码:e3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):260
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:Matte Tin (Sn)
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:30
宽度:3.505 mmBase Number Matches:1

LT1123CST#TRPBF 数据手册

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LT1123  
Low Dropout  
Regulator Driver  
U
DESCRIPTIO  
EATURE  
S
F
Extremely Low Dropout  
Low Cost  
The LT1123 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.  
Fixed 5V Output, Trimmed to ±1%  
700µA Quiescent Current  
3-Pin TO-92 Package  
1mV Line Regulation  
5mV Load Regulation  
Thermal Limit  
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.  
4A Output Current Guaranteed  
Total quiescent current for the LT1123 is only 700µA. The  
device is available in a low cost TO-92 package.  
U
O
TYPICAL APPLICATI  
5V Low Dropout Regulator  
Dropout Voltage  
0.5  
0.4  
0.3  
0.2  
0.1  
0
620Ω  
SEALED  
LEAD ACID  
5.4 – 7.2V  
+
MOTOROLA  
MJE1123  
10µF*  
20Ω  
DRIVE  
* REQUIRED IF DEVICE IS  
MORE THAN 6" FROM MAIN  
FILTER CAPACITOR  
REQUIRED FOR STABILITY  
(LARGER VALUES INCREASE  
STABILITY)  
OUTPUT = 5V/4A  
10µF†  
LT1123 FB  
GND  
+
LT1123 TA01  
0
1
2
3
4
5
OUTPUT CURRENT (A)  
LT1123 TA02  
1

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