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LM3940J-3.3-QML PDF预览

LM3940J-3.3-QML

更新时间: 2024-11-22 22:15:07
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

LM3940J-3.3-QML 技术参数

是否Rohs认证:不符合生命周期:Obsolete
包装说明:DIP, DIP16,.3Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.72Is Samacsys:N
可调性:FIXED最大回动电压 1:1 V
标称回动电压 1:0.5 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-GDIP-T16JESD-609代码:e0
长度:19.304 mm最大电网调整率:0.099%
最大负载调整率:0.08%功能数量:1
输出次数:1端子数量:16
工作温度TJ-Max:125 °C工作温度TJ-Min:-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:CERAMIC, GLASS-SEALED封装代码:DIP
封装等效代码:DIP16,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified调节器类型:FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
筛选级别:MIL-PRF-38535 Class Q座面最大高度:5.08 mm
子类别:Other Regulators表面贴装:NO
技术:BIPOLAR端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 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:7.62 mm
Base Number Matches:1

LM3940J-3.3-QML 数据手册

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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  

LM3940J-3.3-QML 替代型号

型号 品牌 替代类型 描述 数据表
5962-9688401QEA NSC

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