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LM2940CT-5.0 PDF预览

LM2940CT-5.0

更新时间： 2024-11-17 22:51:43
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器调节器输出元件PC局域网
页数 文件大小 规格书
19页 500K
描述
1A Low Dropout Regulator

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LM2940CT-5.0 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：TO-220, SIP3,.1TBReach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.62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：45 V最大输入电压：26 V
最小输入电压：6.25 VJESD-30 代码：R-PSFM-T3
JESD-609代码：e0最大电网调整率：0.05%
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：3工作温度TJ-Max：125 °C
工作温度TJ-Min：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 1：5.25 V最小输出电压 1：4.75 V
标称输出电压 1：5 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-220封装等效代码：SIP3,.1TB
封装形状：RECTANGULAR封装形式：FLANGE MOUNT
峰值回流温度（摄氏度）：NOT APPLICABLE认证状态：Not Qualified
调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR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：SINGLE
处于峰值回流温度下的最长时间：NOT APPLICABLE最大电压容差：5%
Base Number Matches：1

LM2940CT-5.0 数据手册

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January 2003  
LM2940/LM2940C  
1A Low Dropout Regulator  
General Description  
momentarily exceed the specified maximum operating volt-  
age, the regulator will automatically shut down to protect  
both the internal circuits and the load. The LM2940/  
LM2940C cannot be harmed by temporary mirror-image in-  
sertion. Familiar regulator features such as short circuit and  
thermal overload protection are also provided.  
The LM2940/LM2940C positive voltage regulator features  
the ability to source 1A of output current with a dropout  
voltage of typically 0.5V and a maximum of 1V over the  
entire temperature range. Furthermore, a quiescent current  
reduction circuit has been included which reduces the  
ground current when the differential between the input volt-  
age and the output voltage exceeds approximately 3V. The  
quiescent current with 1A of output current and an input-  
output differential of 5V is therefore only 30 mA. Higher  
quiescent currents only exist when the regulator is in the  
dropout mode (VIN − VOUT ≤ 3V).  
Features  
@
n Dropout voltage typically 0.5V IO = 1A  
n Output current in excess of 1A  
n Output voltage trimmed before assembly  
n Reverse battery protection  
Designed also for vehicular applications, the LM2940/  
LM2940C and all regulated circuitry are protected from re-  
verse battery installations or 2-battery jumps. During line  
transients, such as load dump when the input voltage can  
n Internal short circuit current limit  
n Mirror image insertion protection  
n P+ Product Enhancement tested  
Typical Application  
00882203  
*
Required if regulator is located far from power supply filter.  
**  
C
must be at least 22 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible  
OUT  
to the regulator. This capacitor must be rated over the same operating temperature range as the regulator and the ESR is critical; see curve.  
Ordering Information  
Temperature  
Range  
Output Voltage  
9.0  
Package  
5.0  
8.0  
10  
12  
15  
0˚C ≤ TJ ≤ 125˚C LM2940CT-5.0  
LM2940CT-9.0  
LM2940CS-9.0  
LM2940CT-12  
LM2940CS-12  
LM2940CT-15  
LM2940CS-15  
LM2940LD-15  
TO-220  
TO-263  
LM2940CS-5.0  
−40˚C ≤ TJ  
≤
LM2940LD-5.0  
LM2940LD-8.0 LM2940LD-9.0  
LM2940LD-10 LM2940LD-12  
LLP 1k  
Units  
Tape and  
Reel  
125˚C  
LM2940LDX-5.0  
LM2940LDX-8.0 LM2940LDX-9.0  
LM2940LDX-10 LM2940LDX-12 LM2940LDX-15  
LLP 4.5k  
Units  
Tape and  
Reel  
−40˚C ≤ TJ  
≤
≤
LM2940T-5.0  
LM2940S-5.0  
LM2940T-8.0  
LM2940S-8.0  
LM2940T-9.0  
LM2940S-9.0  
LM2940T-10  
LM2940S-10  
LM2940T-12  
LM2940S-12  
TO-220  
125˚C  
TO-263  
−40˚C ≤ TJ  
LM2940IMP-5.0 LM2940IMP-8.0 LM2940IMP-9.0 LM2940IMP-10 LM2940IMP-12 LM2940IMP-15  
SOT-223  
85˚C  
LM2940IMPX-5.0 LM2940IMPX-8.0 LM2940IMPX-9.0 LM2940IMPX-10 LM2940IMPX-12 LM2940IMPX-15 SOT-223  
in Tape  
and Reel  
SOT-223  
Package Marking  
L53B  
L54B  
L0EB  
L55B  
L56B  
L70B  
The physical size of the SOT-223 is too small to contain the full device part number. The package markings indicated are what will appear on the actual device.  
© 2003 National Semiconductor Corporation  
DS008822  
www.national.com  
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LM2940CT-5.0 替代型号

型号 品牌 替代类型 描述 数据表
LMS8117ADTX-3.3/NOPB NSC

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