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LM337 Datasheet(PDF) 1 Page - ON Semiconductor

Part No. LM337
Description  THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATOR
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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LM337 Datasheet(HTML) 1 Page - ON Semiconductor

   
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LM337
Order this document by LM337/D
Device
Operating
Temperature Range
Package
ORDERING INFORMATION
LM337D2T
LM337T
Surface Mount
Insertion Mount
LM337BD2T
LM337BT
TJ = – 40° to +125°C
Surface Mount
Insertion Mount
TJ = 0° to +125°C
SEMICONDUCTOR
TECHNICAL DATA
THREE–TERMINAL
ADJUSTABLE NEGATIVE
VOLTAGE REGULATOR
Pin 1. Adjust
2. Vin
3. Vout
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface
connected to Pin 2.
3
1
2
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
(D2PAK)
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
3
1
2
1
MOTOROLA ANALOG IC DEVICE DATA
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
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
Standard Application
Vout + –1.25 V 1 )
R
2
R
1
*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.
LM337
IPROG
Cin*
1.0
µF
+
–Vin
Vin
Vout
–Vout
CO**
1.0
µF
+
IAdj
R1
120
R2
© Motorola, Inc. 1996
Rev 1


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