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LM337T 参数 Datasheet PDF下载

LM337T图片预览
型号: LM337T
PDF下载: 下载PDF文件 查看货源
内容描述: 三端可调负电压稳压 [THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATOR]
分类和应用:
文件页数/大小: 8 页 / 176 K
品牌: ONSEMI [ ON SEMICONDUCTOR ]
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Order this document by LM337/D
LM337
Three-Terminal Adjustable
Output 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.
Output Current in Excess of 1.5 A
THREE–TERMINAL
ADJUSTABLE NEGATIVE
VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
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
Available in Surface Mount D2PAK and Standard 3–Lead Transistor
Package
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface
connected to Pin 2.
1
2
3
Standard Application
IPROG
+
R2
R1
120
IAdj
+
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
(D2PAK)
Pin 1. Adjust
2. Vin
3. Vout
Cin*
1.0
µF
CO**
1.0
µF
1
2
3
Vin
–Vin
LM337
Vout
–Vout
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
ORDERING INFORMATION
* Cin is required if regulator is located more than 4 inches from power supply filter.
*
A 1.0
µF
solid tantalum or 10
µF
aluminum electrolytic is recommended.
** CO is necessary for stability. A 1.0
µF
solid tantalum or 10
µF
aluminum electrolytic
**
is recommeded.
V out
Device
LM337BD2T
LM337BT
LM337D2T
LM337T
TJ = – 40° to +125°C
TJ = 0° to +125°C
Operating
Temperature Range
Package
Surface Mount
Insertion Mount
Surface Mount
Insertion Mount
Rev 1
+
–1.25 V 1
)
R2
R
1
©
Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
1