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LM2937ET-12 PDF预览

LM2937ET-12

更新时间: 2024-11-17 22:22:43
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
11页 311K
描述
500 mA Low Dropout Regulator

LM2937ET-12 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
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:26 V最大输入电压:26 V
最小输入电压:14 VJESD-30 代码:R-PSFM-T3
JESD-609代码:e0最大电网调整率:0.12%
最大负载调整率:0.12%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:-40 °C最大输出电流 1:0.5 A
最大输出电压 1:12.6 V最小输出电压 1:11.4 V
标称输出电压 1:12 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:5%Base Number Matches:1

LM2937ET-12 数据手册

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March 2000  
LM2937  
500 mA Low Dropout Regulator  
nections, two-battery jumps and up to +60V/−50V load dump  
transients. Familiar regulator features such as short circuit  
and thermal shutdown protection are also built in.  
General Description  
The LM2937 is a positive voltage regulator capable of sup-  
plying up to 500 mA of load current. The use of a PNP power  
transistor provides a low dropout voltage characteristic. With  
a load current of 500 mA the minimum input to output voltage  
differential required for the output to remain in regulation is  
typically 0.5V (1V guaranteed maximum over the full operat-  
ing temperature range). Special circuitry has been incorpo-  
rated to minimize the quiescent current to typically only  
10 mA with a full 500 mA load current when the input to out-  
put voltage differential is greater than 3V.  
Features  
n Fully specified for operation over −40˚C to +125˚C  
n Output current in excess of 500 mA  
n Output trimmed for 5% tolerance under all operating  
conditions  
n Typical dropout voltage of 0.5V at full rated load current  
n Wide output capacitor ESR range, up to 3  
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 low dropout regulators, the ESR of this ca-  
pacitor remains a critical design parameter, but the LM2937  
includes special compensation circuitry that relaxes ESR re-  
quirements. The LM2937 is stable for all ESR below 3. This  
allows the use of low ESR chip capacitors.  
Ideally suited for automotive applications, the LM2937 will  
protect itself and any load circuitry from reverse battery con-  
Connection Diagram and Ordering Information  
TO-220 Plastic Package  
SOT-223 Plastic Package  
DS011280-2  
DS011280-26  
Front View  
Front View  
Order Number LM2937ET-5.0, LM2937ET-8.0,  
Order Number LM2937IMP-5.0,  
LM2937IMP-8.0, LM2937IMP-10,  
LM2937IMP-12 or LM2937IMP-15  
See NS Package Number MP04A  
LM2937ET-10, LM2937ET-12 or LM2937ET-15  
See NS Package Number T03B  
TO-263 Surface-Mount Package  
DS011280-6  
Side View  
DS011280-5  
Top View  
Order Number LM2937ES-5.0, LM2937ES-8.0,  
LM2937ES-10, LM2937ES-12 or LM2937ES-15  
See NS Package Number TS3B  
© 2000 National Semiconductor Corporation  
DS011280  
www.national.com  

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