Order this document by LM337M/D
LM337M
Three-Terminal Adjustable
Output Negative Voltage
Regulator
The LM337M is an adjustable three鈥搕erminal negative voltage regulator
capable of supplying in excess of 500 mA over an output voltage range of
鈥?.2 V to 鈥?7 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鈥搊ut proof.
The LM337M serves a wide variety of applications including local,
on鈥揷ard 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.
鈥?/div>
Output Current in Excess of 500 mA
MEDIUM CURRENT
THREE鈥揟ERMINAL
ADJUSTABLE NEGATIVE
VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Output Adjustable Between 鈥?.2 V and 鈥?7 V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe鈥揂rea Compensation
Floating Operation for High Voltage Applications
Standard 3鈥揕ead Transistor Packages
Eliminates Stocking Many Fixed Voltages
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Pin 1. Adjust
2. Vin
3. Vout
1
2
3
Standard Application
IPROG
+
Cin *
1.0碌F
R2
R1
120
IAdj
Adjust
Vin
鈥揤in
LM337M
Vout
鈥揤out
CO **
+
1.0碌F
*Cin is required if regulator is located more than 4鈥?from power supply filter.
**A
1.0
碌F
solid tantalum or 10
碌F
aluminum electrolytic is recommended.
**CO is necessary for stability. A 1.0
碌F
solid tantalum or 10
碌F
aluminum
**electrolytic
is recommeded.
Vout
ORDERING INFORMATION
Device
LM337MT
Operating
Temperature Range
TJ = 0擄 to +125擄C
Package
Plastic Power
Rev 1
+
鈥?.25 V 1
)
R2
R1
漏
Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
1
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