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LM3940IMP-3.3 PDF预览

LM3940IMP-3.3

更新时间: 2024-01-04 13:57:53
品牌 Logo 应用领域
美国国家半导体 - NSC 线性稳压器IC调节器电源电路光电二极管输出元件
页数 文件大小 规格书
11页 294K
描述
1A Low Dropout Regulator for 5V to 3.3V Conversion

LM3940IMP-3.3 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active零件包装代码:SOT-223
包装说明:SOT-223, 3 PIN针数:3
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:0.72Samacsys Confidence:3
Samacsys Status:ReleasedSamacsys PartID:1989
Samacsys Pin Count:4Samacsys Part Category:Integrated Circuit
Samacsys Package Category:SOT223 (3-Pin)Samacsys Footprint Name:DCY (R-PDSO-G4
Samacsys Released Date:2015-04-21 09:42:40Is Samacsys:N
可调性:FIXED最大回动电压 1:1 V
标称回动电压 1:0.31 V最大绝对输入电压:7.5 V
最大输入电压:5.5 V最小输入电压:4.5 V
JESD-30 代码:R-PDSO-G4JESD-609代码:e3
长度:6.5 mm最大电网调整率:0.04%
最大负载调整率:0.08%湿度敏感等级:1
功能数量:1输出次数:1
端子数量:4工作温度TJ-Max:125 °C
工作温度TJ-Min:-40 °C最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流 1:1 A
最大输出电压 1:3.47 V最小输出电压 1:3.13 V
标称输出电压 1:3.3 V封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOT-223
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
包装方法:TR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子类别:Other Regulators
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:NOT SPECIFIED最大电压容差:5.2%
宽度:3.56 mmBase Number Matches:1

LM3940IMP-3.3 数据手册

 浏览型号LM3940IMP-3.3的Datasheet PDF文件第2页浏览型号LM3940IMP-3.3的Datasheet PDF文件第3页浏览型号LM3940IMP-3.3的Datasheet PDF文件第4页浏览型号LM3940IMP-3.3的Datasheet PDF文件第5页浏览型号LM3940IMP-3.3的Datasheet PDF文件第6页浏览型号LM3940IMP-3.3的Datasheet PDF文件第7页 
May 1999  
LM3940  
1A Low Dropout Regulator for 5V to 3.3V Conversion  
General Description  
The LM3940 is a 1A low dropout regulator designed to pro-  
vide 3.3V from a 5V supply.  
Features  
n Output voltage specified over temperature  
n Excellent load regulation  
n Guaranteed 1A output current  
n Requires only one external component  
n Built-in protection against excess temperature  
n Short circuit protected  
The LM3940 is ideally suited for systems which contain both  
5V and 3.3V logic, with prime power provided from a 5V bus.  
Because the LM3940 is a true low dropout regulator, it can  
hold its 3.3V output in regulation with input voltages as low  
as 4.5V.  
The T0-220 package of the LM3940 means that in most ap-  
plications the full 1A of load current can be delivered without  
using an additional heatsink.  
Applications  
n Laptop/Desktop Computers  
n Logic Systems  
The surface mount TO-263 package uses minimum board  
space, and gives excellent power dissipation capability when  
soldered to a copper plane on the PC board.  
Typical Application  
DS012080-1  
*
Required if regulator is located more than 1" from the power supply filter capacitor or if battery power is used.  
**  
See Application Hints.  
© 1999 National Semiconductor Corporation  
DS012080  
www.national.com  

LM3940IMP-3.3 替代型号

型号 品牌 替代类型 描述 数据表
LMS8117AMP-3.3/NOPB NSC

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