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LM138K

更新时间： 2024-11-22 22:51:59
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器调节器输出元件局域网
页数 文件大小 规格书
12页 187K
描述
THREE-TERMINAL 5 A ADJUSTABLE VOLTAGE REGULATORS

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中文翻译

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LM138K 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：TO-204AA
包装说明：, TO-204/-3针数：2
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.64
可调性：ADJUSTABLE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：O-MBFM-P2
JESD-609代码：e3最大电网调整率 (%/V)：0.01
最大负载调整率 (%)：0.3%功能数量：1
输出次数：1端子数量：2
工作温度TJ-Max：150 °C工作温度TJ-Min：-55 °C
最大输出电流 1：5 A最大输出电压 1：32 V
最小输出电压 1：1.2 V封装主体材料：METAL
封装等效代码：TO-204/-3封装形状：ROUND
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
子类别：Other Regulators表面贴装：NO
技术：BIPOLAR端子面层：Tin (Sn)
端子形式：PIN/PEG端子位置：BOTTOM
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

LM138K 数据手册

 浏览型号LM138K的Datasheet PDF文件第2页浏览型号LM138K的Datasheet PDF文件第3页浏览型号LM138K的Datasheet PDF文件第4页浏览型号LM138K的Datasheet PDF文件第5页浏览型号LM138K的Datasheet PDF文件第6页浏览型号LM138K的Datasheet PDF文件第7页 
LM138/238  
LM338  
THREE-TERMINAL 5-A  
ADJUSTABLE VOLTAGE REGULATORS  
.
.
.
.
.
.
.
GUARANTEED 7A PEAK OUTPUT CURRENT  
GUARANTEED 5A OUTPUT CURRENT  
ADJUSTABLE OUTPUT DOWN TO 1.2V  
LINE REGULATION TYPICALLY 0.005% /V  
LOAD REGULATION TYPICALLY 0.1%  
GUARANTEED THERMAL REGULATION  
CURRENT LIMIT CONSTANT WITH TEM-  
PERATURE  
.
STANDARD 3-LEAD TRANSISTOR PACKAGE  
DESCRIPTION  
The LM138/LM238/LM338 are adjustable 3-terminal  
positive voltageregulators capable of supplying in ex-  
cess of 5A over a 1.2V to 32V output range. They are  
exceptionally easy to use and require only 2 resistors  
toset the output voltage. Careful circuitdesign has re-  
sulted in outstanding load and line regulation com-  
parable to many commercial power supplies. The  
LM138 family is supplied in a standard 3-lead transis-  
tor package.  
TO3  
K SUFFIX  
(Steel Can)  
ORDER CODE  
A unique feature of the LM138 family is time-de-  
pendent current limiting. The current limit circuitry  
allowspeak currents of upto 12A tobe drawn fromthe  
regulator for short periods of time. This allows the  
LM138 to be used with heavy transient loads and  
speedsstart-up under full-load conditions. Under sus-  
tained 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 thepower transistor. Overloadpro-  
tection remains functional even if the adjustment pin  
is accidentally disconnected.  
Normally, nocapacitors are needed unless thedevice  
is situated far from the input filter capacitors in which  
case an input bypass is needed. An optional output  
capacitor can be added to improve transient res-  
ponse. The adjustment terminal can be bypassed to  
achieve very high ripple rejection ratios which are dif-  
ficult to achieve with standard 3-terminal regulators.  
Besidesreplacing fixedregulators ordiscretedesigns,  
the LM238 is useful in a wide variety of other applica-  
tions. Since the regulator is ”floating” and sees only  
theinput-to-output differential voltage, supplies of sev-  
eral hundred volts can be regulated as long as the  
maximum input to input differential is not exceeded.  
The LM138/LM238/LM338 are packaged in standard  
steel TO-3 transistor packages. The LM138 is rated  
for operation from -55 oC to 150 oC, the LM238 from  
– 25°C to + 150°C and the LM338 from 0°C to +  
125°C.  
PART  
NUMBER  
TEMPERATURE  
RANGE  
PACKAGE  
K
o
o
LM138  
LM238  
LM338  
-55 C to + 150 C  
•
•
•
o
o
-25 C to + 150 C  
o
o
0 C to + 125 C  
EXAMPLE: LM138K  
PIN CONNECTION  
(bottom view)  
Case is output  
March 1993  
1/12  
1234567...12

中文翻译

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LM138K 替代型号

型号 品牌 替代类型 描述 数据表
LT138AK Linear

类似代替

 5A Positive Adjustable Voltage Regulator
LM338K STMICROELECTRONICS

类似代替

 THREE-TERMINAL 5 A ADJUSTABLE VOLTAGE REGULATORS
NTE935 NTE

功能相似

 Integrated Circuit 3-Terminal Adjustable Positive Voltage Regulator 1.2V to 32V, 5A

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LM138K/883 ETC

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LM138K/883C TI

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LM138KG-MD8 TI

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LM138K-MIL TI

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LM138K-MIL/NOPB TI

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