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LM3940IMPX-3.3 PDF预览

LM3940IMPX-3.3

更新时间: 2024-01-22 11:04:06
品牌 Logo 应用领域
美国国家半导体 - NSC 光电二极管输出元件调节器
页数 文件大小 规格书
12页 307K
描述
IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PDSO4, SOT-223, 3 PIN, Fixed Positive Single Output LDO Regulator

LM3940IMPX-3.3 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:SOT-223, 3 PINReach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.1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 VJESD-30 代码:R-PDSO-G4
JESD-609代码:e0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:TAPE AND REEL
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: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:40
最大电压容差:5.2%宽度:3.56 mm
Base Number Matches:1

LM3940IMPX-3.3 数据手册

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July 2007  
LM3940  
1A Low Dropout Regulator for 5V to 3.3V Conversion  
General Description  
Features  
The LM3940 is a 1A low dropout regulator designed to provide  
3.3V from a 5V supply.  
Output voltage specified over temperature  
Excellent load regulation  
The LM3940 is ideally suited for systems which contain both  
5V and 3.3V logic, with prime power provided from a 5V bus.  
Guaranteed 1A output current  
Requires only one external component  
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.  
Built-in protection against excess temperature  
Short circuit protected  
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  
Laptop/Desktop Computers  
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.  
Logic Systems  
Typical Application  
1208001  
*Required if regulator is located more than 1″ from the power supply filter capacitor or if battery power is used.  
**See Application Hints.  
Connection Diagram/Ordering Information  
3-Lead TO-220 Package 1208002  
(Front View)  
Order Part Number LM3940IT-3.3  
NSC Drawing Number TO3B  
3-Lead SOT-223  
(Front View)  
1208010  
Order Part Number LM3940IMP-3.3  
Package Marked L52B  
NSC Drawing Number MP04A  
1208003  
3-Lead TO-263 Package  
(Front View)  
Order Part Number LM3940IS-3.3  
NSC Drawing Number TS3B  
© 2007 National Semiconductor Corporation  
12080  
www.national.com  

LM3940IMPX-3.3 替代型号

型号 品牌 替代类型 描述 数据表
MIC5209-3.3YS MICROCHIP

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SPX3940AM3-L-3-3 EXAR

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