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LM2937ET-2.5 PDF预览

LM2937ET-2.5

更新时间: 2024-11-17 22:20:43
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器
页数 文件大小 规格书
10页 297K
描述
400mA and 500mA Voltage Regulators

LM2937ET-2.5 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:5.11可调性:FIXED
标称回动电压 1:2.25 V最大绝对输入电压:26 V
最大输入电压:26 V最小输入电压:4.75 V
JESD-30 代码:R-PSFM-T3JESD-609代码:e0
最大电网调整率:0.025%最大负载调整率:0.025%
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:150 °C最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流 1:0.5 A
最大输出电压 1:2.62 V最小输出电压 1:2.38 V
标称输出电压 1:2.5 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
包装方法:RAIL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
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:40
最大电压容差:4.8%Base Number Matches:1

LM2937ET-2.5 数据手册

 浏览型号LM2937ET-2.5的Datasheet PDF文件第2页浏览型号LM2937ET-2.5的Datasheet PDF文件第3页浏览型号LM2937ET-2.5的Datasheet PDF文件第4页浏览型号LM2937ET-2.5的Datasheet PDF文件第5页浏览型号LM2937ET-2.5的Datasheet PDF文件第6页浏览型号LM2937ET-2.5的Datasheet PDF文件第7页 
February 1998  
LM2937-2.5, LM2937-3.3  
400mA and 500mA Voltage Regulators  
two-battery jumps and up to +60V/−50V load dump tran-  
sients. Familiar regulator features such as short circuit and  
thermal shutdown protection are also built in.  
General Description  
The LM2937-2.5 and LM2937-3.3 are positive voltage regu-  
lators capable of supplying up to 500 mA of load current.  
Both regulators are ideal for converting a common 5V logic  
supply, or higher input supply voltage, to the lower 2.5V and  
3.3V supplies to power VLSI ASIC’s and microcontrollers.  
Special circuitry has been incorporated to minimize the qui-  
escent current to typically only 10 mA with a full 500 mA load  
current when the input to output voltage differential is greater  
than 5V.  
Features  
n Fully specified for operation over −40˚C to +125˚C  
n Output current in excess of 500 mA (400mA for  
SOT-223 package)  
n Output trimmed for 5% tolerance under all operating  
conditions  
n Wide output capacitor ESR range, 0.01up to 5Ω  
n Internal short circuit and thermal overload protection  
n Reverse battery protection  
n 60V input transient protection  
n Mirror image insertion protection  
The LM2937 requires an output bypass capacitor for stabil-  
ity. As with most regulators utilizing a PNP pass transistor,  
the ESR of this capacitor remains a critical design param-  
eter, but the LM2937-2.5 and LM2937-3.3 include special  
compensation circuitry that relaxes ESR requirements. The  
LM2937 is stable for all ESR ratings less than 5. This al-  
lows the use of low ESR chip capacitors.  
The regulators are also suited for automotive applications,  
with built in protection from reverse battery connections,  
Connection Diagram and Ordering Information  
TO-220 Plastic Package  
SOT-223 Plastic Package  
DS100113-24  
DS100113-25  
Front View  
Front View  
Order Number LM2937ET-2.5, LM2937ET-3.3,  
Order Number LM2937IMP-2.5, LM2937IMP-3.3,  
See NS Package Number MA04A  
See NS Package Number T03B  
TO-263 Surface-Mount Package  
DS100113-27  
Side View  
DS100113-26  
Top View  
Order Number LM2937ES-2.5, LM2937ES-3.3,  
See NS Package Number TS3B  
© 1998 National Semiconductor Corporation  
DS100113  
www.national.com  

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型号 品牌 替代类型 描述 数据表
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