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LM337M Datasheet, PDF (1/8 Pages) ON Semiconductor – MEDIUM CURRENT THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATOR | |||
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Order this document by LM337M/D
Three-Terminal Adjustable
Output Negative Voltage
Regulator
The LM337M is an adjustable threeâterminal negative voltage regulator
capable of supplying in excess of 500 mA over an output voltage range of
â1.2 V to â37 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 blowâout proof.
The LM337M serves a wide variety of applications including local,
onâcard 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 LM337M can be used as a precision current regulator.
⢠Output Current in Excess of 500 mA
⢠Output Adjustable Between â1.2 V and â37 V
⢠Internal Thermal Overload Protection
⢠Internal Short Circuit Current Limiting
⢠Output Transistor SafeâArea Compensation
⢠Floating Operation for High Voltage Applications
⢠Standard 3âLead Transistor Packages
⢠Eliminates Stocking Many Fixed Voltages
LM337M
MEDIUM CURRENT
THREEâTERMINAL
ADJUSTABLE NEGATIVE
VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Pin 1. Adjust
2. Vin
1
3. Vout
2
3
Standard Application
IPROG
Cin *
âVin
+
1.0µF
R2
R1
120
IAdj
Adjust
Vin
Vout
LM337M
+
CO ** 1.0µF
âVout
*Cin is required if regulator is located more than 4â³ from power supply filter.
**A 1.0 µF solid tantalum or 10 µF aluminum electrolytic is recommended.
+ Ç ) Ç **CO is necessary for stability. A 1.0 µF solid tantalum or 10 µF aluminum
**electrolytic is recommeded.
Vout
â1.25 V 1
R2
R1
MOTOROLA ANALOG IC DEVICE DATA
ORDERING INFORMATION
Device
LM337MT
Operating
Temperature Range Package
TJ = 0° to +125°C Plastic Power
© Motorola, Inc. 1996
Rev 1
1
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