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LM337

更新时间： 2024-11-19 22:51:55
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
8页 176K
描述
THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATOR

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LM337 数据手册

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Order this document by LM337/D  
THREE–TERMINAL  
ADJUSTABLE NEGATIVE  
VOLTAGE REGULATOR  
The LM337 is an adjustable 3–terminal negative voltage regulator  
capable of supplying in excess of 1.5 A over an output voltage range of  
–1.2 V to –37 V. This voltage regulator is exceptionally easy to use and  
requires only two external resistors to set the output voltage. Further, it  
employs internal current limiting, thermal shutdown and safe area  
compensation, making it essentially blow–out proof.  
The LM337 serves a wide variety of applications including local, on card  
regulation. This device can also be used to make a programmable output  
regulator, or by connecting a fixed resistor between the adjustment and  
output, the LM337 can be used as a precision current regulator.  
SEMICONDUCTOR  
TECHNICAL DATA  
• Output Current in Excess of 1.5 A  
• Output Adjustable between –1.2 V and –37 V  
• Internal Thermal Overload Protection  
• Internal Short Circuit Current Limiting Constant with Temperature  
• Output Transistor Safe–Area Compensation  
• Floating Operation for High Voltage Applications  
• Eliminates Stocking many Fixed Voltages  
T SUFFIX  
PLASTIC PACKAGE  
CASE 221A  
Heatsink surface  
connected to Pin 2.  
2
• Available in Surface Mount D PAK and Standard 3–Lead Transistor  
Package  
1
2
3
Pin 1. Adjust  
2. V  
3. V  
in  
out  
Standard Application  
I
PROG  
D2T SUFFIX  
PLASTIC PACKAGE  
CASE 936  
R
+
+
2
C
*
µ
C **  
O
in  
1.0  
F
R
120  
1.0 µF  
1
2
3
2
1
(D PAK)  
I
Adj  
Heatsink surface (shown as terminal 4 in  
case outline drawing) is connected to Pin 2.  
V
V
out  
in  
LM337  
–V  
in  
–V  
out  
ORDERING INFORMATION  
Operating  
*C is required if regulator is located more than 4 inches from power supply filter.  
in  
*A 1.0  
µF solid tantalum or 10 µF aluminum electrolytic is recommended.  
Temperature Range  
Device  
LM337BD2T  
LM337BT  
LM337D2T  
LM337T  
Package  
Surface Mount  
Insertion Mount  
Surface Mount  
Insertion Mount  
**C is necessary for stability. A 1.0  
O
µF solid tantalum or 10 µF aluminum electrolytic  
T = –40° to +125°C  
J
**is recommeded.  
R
2
V
–1.25 V  
1
T = 0° to +125°C  
J
out  
R
1
Motorola, Inc. 1996  
Rev 1  
12345678

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