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LM338T

更新时间： 2024-02-25 04:59:55
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德州仪器 - TI 稳压器
页数 文件大小 规格书
23页 2542K
描述
LM138/LM338 5-Amp Adjustable Regulators

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中文翻译

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LM338T 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active零件包装代码：TO-247
包装说明：TO-247,针数：3
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.18
Is Samacsys：N最大差分输入-输出电压：35 V
最小差分输入-输出电压：3 VJESD-30 代码：R-PSFM-T3
功能数量：1端子数量：3
工作温度TJ-Max：70 °C工作温度TJ-Min：
最大输出电流 1：5 A最大输出电压 1：35 V
最小输出电压 1：1.25 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-247封装形状：RECTANGULAR
封装形式：FLANGE MOUNT峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified调节器类型：ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR
表面贴装：NO端子形式：THROUGH-HOLE
端子位置：SINGLE处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

LM338T 数据手册

 浏览型号LM338T的Datasheet PDF文件第2页浏览型号LM338T的Datasheet PDF文件第3页浏览型号LM338T的Datasheet PDF文件第4页浏览型号LM338T的Datasheet PDF文件第5页浏览型号LM338T的Datasheet PDF文件第6页浏览型号LM338T的Datasheet PDF文件第7页 
LM138, LM338  
www.ti.com  
SNVS771B –MAY 1998–REVISED APRIL 2013  
LM138/LM338 5-Amp Adjustable Regulators  
Check for Samples: LM138, LM338  
A unique feature of the LM138 family is time-  
1
FEATURES  
dependent current limiting. The current limit circuitry  
allows peak currents of up to 12A to be drawn from  
the regulator for short periods of time. This allows the  
LM138 to be used with heavy transient loads and  
speeds start-up under full-load conditions. Under  
sustained loading conditions, the current limit  
decreases to a safe value protecting the regulator.  
Also included on the chip are thermal overload  
protection and safe area protection for the power  
transistor. Overload protection remains functional  
even if the adjustment pin is accidentally  
disconnected.  
2
•
•
•
•
•
•
•
Specified 7A Peak Output Current  
Specified 5A Output Current  
Adjustable Output Down to 1.2V  
Specified Thermal Regulation  
Current Limit Constant with Temperature  
P+ Product Enhancement Tested  
Output is Short-Circuit Protected  
APPLICATIONS  
•
•
•
Adjustable Power Supplies  
Constant Current Regulators  
Battery Chargers  
Normally, no capacitors are needed unless the device  
is situated more than 6 inches from the input filter  
capacitors in which case an input bypass is needed.  
An output capacitor can be added to improve  
transient response, while bypassing the adjustment  
pin will increase the regulator's ripple rejection.  
DESCRIPTION  
The LM138 series of adjustable 3-terminal positive  
voltage regulators is capable of supplying in excess  
of 5A over a 1.2V to 32V output range. They are  
exceptionally easy to use and require only 2 resistors  
to set the output voltage. Careful circuit design has  
Besides replacing fixed regulators or discrete  
designs, the LM138 is useful in a wide variety of  
other applications. Since the regulator is “floating”  
and sees only the input-to-output differential voltage,  
supplies of several hundred volts can be regulated as  
long as the maximum input to output differential is not  
exceeded, i.e., do not short-circuit output to ground.  
The part numbers in the LM138 series which have a  
K suffix are packaged in a standard Steel TO-3  
package, while those with a T suffix are packaged in  
a TO-220 plastic package. The LM138 is rated for  
−55°C ≤ TJ ≤ +150°C, and the LM338 is rated for 0°C  
≤ TJ ≤ +125°C.  
resulted  
in  
outstanding  
load  
and  
line  
regulation—comparable to many commercial power  
supplies. The LM138 family is supplied in a standard  
3-lead transistor package.  
Connection Diagram  
Connection Diagrams  
Figure 1. (TO-3) Metal Can Package  
Bottom View  
See Package Number NDS0002A  
Figure 2. (TO-220) Plastic Package  
Front View  
See Package Number NDE0003B  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 1998–2013, Texas Instruments Incorporated  
1234567...23

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LM338T 替代型号

型号 品牌 替代类型 描述 数据表
LM338T/NOPB TI

完全替代

 LM138/LM338 5-Amp Adjustable Regulators
LM138K-MIL TI

类似代替

 LM138QML | K | 2
LM338T NSC

类似代替

 5-Amp Adjustable Regulators

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LM339 LGE

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 		consists of four independent voltage comparators
LM339 MOTOROLA

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 		Quad Single Supply Comparators
LM339 ONSEMI

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 		Quad Single Supply Comparators
LM339 GE

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 		Single/Quad Types Comparators
LM339 HTC

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 		QUAD VOLTAGE COMPARATOR
LM339 NXP

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 		Quad voltage comparator

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