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LM3940ISX-3.3 |LM3940ISX33NS,NSN/a3500avaiIA Low Dropout Regulator for 5V to 3.3V Conversion


LM3940ISX-3.3 ,IA Low Dropout Regulator for 5V to 3.3V ConversionLM3940 1A Low Dropout Regulator for 5V to 3.3V ConversionJanuary 2003LM39401A Low Dropout Regulator ..
LM3940ISX-3.3 NOPB ,1A Low Dropout Regulator for 5V to 3.3V Conversion 3-DDPAK/TO-263 -40 to 125Electrical Characteristics....... 511.3 Community Resources...... 156.6 Typical Characteristics. 61 ..
LM3940ISX-3.3/NOPB ,1A Low Dropout Regulator for 5V to 3.3V Conversion 3-DDPAK/TO-263 -40 to 125Features 3 DescriptionThe LM3940 is a 1-A low-dropout regulator designed1• Input Voltage Range: 4.5 ..
LM3940ISX-3.3/NOPB ,1A Low Dropout Regulator for 5V to 3.3V Conversion 3-DDPAK/TO-263 -40 to 125 SNVS114G–MAY 1999–REVISED FEBRUARY 20155 Pin Configuration and Functions3-Pin4-PinTO-220 PackageSO ..
LM3940ISX-3.3NOPB ,1A Low Dropout Regulator for 5V to 3.3V Conversion 3-DDPAK/TO-263 -40 to 125Features... 1 8 Application and Implementation........ 98.1 Application Information. 92 Application ..
LM3940IT-3.3 ,IA Low Dropout Regulator for 5V to 3.3V ConversionGeneral DescriptionThe LM3940 is a 1A low dropout regulator designed to provide 3.3V from a 5V supp ..
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LM3940ISX-3.3
IA Low Dropout Regulator for 5V to 3.3V Conversion
LM3940 Low Dropout Regulator for 5V to 3.3V Conversion
General Description

The LM3940isa 1A low dropout regulator designedto
provide 3.3V froma5V supply.
The LM3940is ideally suitedfor systems which contain both and 3.3V logic, with prime power provided froma5V bus.
Because the LM3940isa true low dropout regulator,it can
holdits 3.3V outputin regulation with input voltagesas low 4.5V.
The T0-220 packageof the LM3940 means thatin most
applications the full1Aof load current canbe delivered
without usingan additional heatsink.
The surface mount TO-263 package uses minimum board
space, and gives excellent power dissipation capability when
solderedtoa copper planeon thePC board.
Features
Output voltage specified over temperature Excellent load regulation Guaranteed1A output current Requires only one external component Built-in protection against excess temperature Short circuit protected
Applications
Laptop/Desktop Computers Logic Systems
Typical Application

*Requiredif regulatoris located more than1" fromthe power supply filter capacitororif battery poweris used.
**See Application Hints.
Connection Diagram/Ordering Information

3-Lead TO-220 Package
(Front View)
Order Part Number LM3940IT-3.3
NSC Drawing Number TO3B
3-Lead TO-263 Package
(Front View)
Order Part Number LM3940IS-3.3
NSC Drawing Number TS3B
3-Lead SOT-223
(Front View)
Order Part Number LM3940IMP-3.3
Package Marked L52B
NSC Drawing Number MP04A
January 2003
LM3940
Low
Dropout
Regulator
for
3.3V
Conversion
ic,good price


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