2024年3月17日发(作者：夹谷又琴)
LM320L/LM79LXXAC
Series
3-Terminal
Negative
Regulators
February2005
LM320L/LM79LXXACSeries
3-TerminalNegativeRegulators
GeneralDescription
TheLM320L/LM79LXXACdualmarkedseriesof3-terminal
negativevoltageregulatorsfeaturesfixedoutputvoltagesof
−5V,−12V,and−15Vwithoutputcurrentcapabilitiesin
evicesweredesignedusingthe
latestcomputertechniquesforoptimizingthepackagedIC
thermal/79LXXACseries,
evenwhencombinedwithaminimumoutputcompensation
capacitorof0.1µF,exhibitsanexcellenttransientresponse,
amaximumlineregulationof0.07%V
O
/V,andamaximum
loadregulationof0.01%V
O
/mA.
TheLM320L/LM79LXXACseriesalsoincludes,asself-
protectioncircuitry:safeoperatingareacircuitryforoutput
transistorpowerdissipationlimiting,atemperatureindepen-
dentshortcircuitcurrentlimitforpeakoutputcurrentlimiting,
andathermalshutdowncircuittopreventexcessivejunction
ghdesignedprimarilyasfixedvoltage
regulators,thesedevicesmaybecombinedwithsimple
externalcircuitryforboostedand/oradjustablevoltagesand
79LXXACseriesisavailableinthe3-lead
TO-92package,8-leadSOICpackage,andthe6-Bump
320Lseriesisavailableinthe
3-leadTO-92package.
Foroutputvoltageotherthan−5V,−12Vand−15V,the
LM137Lseriesprovidesanoutputvoltagerangefrom1.2V
to47V.
Features
nPresetoutputvoltageerrorislessthan
±
5%overload,
lineandtemperature
nSpecifiedatanoutputcurrentof100mA
nEasilycompensatedwithasmall0.1µFoutput
capacitor
nInternalshort-circuit,thermalandsafeoperatingarea
protection
nEasilyadjustabletohigheroutputvoltages
nMaximumlineregulationlessthan0.07%V
OUT
/V
nMaximumloadregulationlessthan0.01%V
OUT
/mA
nSeeAN-1112formicroSMDconsiderations
TypicalApplications
FixedOutputRegulator
AdjustableOutputRegulator
00774801
*Requirediftheregulatorislocatedfarfromthepowersupplyfilter.A1µF
aluminumelectrolyticmaybesubstituted.
*
*
Requiredforstability.A1µFaluminumelectrolyticmaybesubstituted.
00774803
−V
0
=−5V−(5V/R1+I
Q
)
•
R2,
5V/R1
>
3I
Q
ConnectionDiagrams
6-BumpmicroSMDTO-92PlasticPackage(Z)
00774802
BottomView
00774820
BumpSideDown
©
L
M
3
2
0
L
/
L
M
7
9
L
X
X
A
C
ConnectionDiagrams
(Continued)
SO-8Plastic(NarrowBody)
00774804
TopView
OrderingInformation
Package
8-LeadSOIC
PartNumber
LM79L05ACM
LM79L05ACMX
LM79L13ACM
LM79L13ACMX
LM79L15ACM
LM79L15ACMX
3-PinTO-92LM79L05ACZ
LM79L12ACZ
LM79L15ACZ
6-Bump
microSMD
LM79L15ACTL
LM79L05ACTLX
320L79L05
320L79L12
320L79L15
XTPB
LM79L15ACM
LM79L12ACM
PackageMarking
LM79L05ACM
TransportMedia
95Units/Rail
2.5kUnitsTapeandReel
95Units/Rail
2.5kUnitsTapeandReel
95Units/Rail
2.5kUnitsTapeandReel
1800UnitsPerBox
1800UnitsPerBox
1800UnitsPerBox
250UnitsTapeandReel
3kUnitsTapeandReel
TLA06AMA
Z03A
NSCDrawing
M08A
2
2024年3月17日发(作者：夹谷又琴)
LM320L/LM79LXXAC
Series
3-Terminal
Negative
Regulators
February2005
LM320L/LM79LXXACSeries
3-TerminalNegativeRegulators
GeneralDescription
TheLM320L/LM79LXXACdualmarkedseriesof3-terminal
negativevoltageregulatorsfeaturesfixedoutputvoltagesof
−5V,−12V,and−15Vwithoutputcurrentcapabilitiesin
evicesweredesignedusingthe
latestcomputertechniquesforoptimizingthepackagedIC
thermal/79LXXACseries,
evenwhencombinedwithaminimumoutputcompensation
capacitorof0.1µF,exhibitsanexcellenttransientresponse,
amaximumlineregulationof0.07%V
O
/V,andamaximum
loadregulationof0.01%V
O
/mA.
TheLM320L/LM79LXXACseriesalsoincludes,asself-
protectioncircuitry:safeoperatingareacircuitryforoutput
transistorpowerdissipationlimiting,atemperatureindepen-
dentshortcircuitcurrentlimitforpeakoutputcurrentlimiting,
andathermalshutdowncircuittopreventexcessivejunction
ghdesignedprimarilyasfixedvoltage
regulators,thesedevicesmaybecombinedwithsimple
externalcircuitryforboostedand/oradjustablevoltagesand
79LXXACseriesisavailableinthe3-lead
TO-92package,8-leadSOICpackage,andthe6-Bump
320Lseriesisavailableinthe
3-leadTO-92package.
Foroutputvoltageotherthan−5V,−12Vand−15V,the
LM137Lseriesprovidesanoutputvoltagerangefrom1.2V
to47V.
Features
nPresetoutputvoltageerrorislessthan
±
5%overload,
lineandtemperature
nSpecifiedatanoutputcurrentof100mA
nEasilycompensatedwithasmall0.1µFoutput
capacitor
nInternalshort-circuit,thermalandsafeoperatingarea
protection
nEasilyadjustabletohigheroutputvoltages
nMaximumlineregulationlessthan0.07%V
OUT
/V
nMaximumloadregulationlessthan0.01%V
OUT
/mA
nSeeAN-1112formicroSMDconsiderations
TypicalApplications
FixedOutputRegulator
AdjustableOutputRegulator
00774801
*Requirediftheregulatorislocatedfarfromthepowersupplyfilter.A1µF
aluminumelectrolyticmaybesubstituted.
*
*
Requiredforstability.A1µFaluminumelectrolyticmaybesubstituted.
00774803
−V
0
=−5V−(5V/R1+I
Q
)
•
R2,
5V/R1
>
3I
Q
ConnectionDiagrams
6-BumpmicroSMDTO-92PlasticPackage(Z)
00774802
BottomView
00774820
BumpSideDown
©
L
M
3
2
0
L
/
L
M
7
9
L
X
X
A
C
ConnectionDiagrams
(Continued)
SO-8Plastic(NarrowBody)
00774804
TopView
OrderingInformation
Package
8-LeadSOIC
PartNumber
LM79L05ACM
LM79L05ACMX
LM79L13ACM
LM79L13ACMX
LM79L15ACM
LM79L15ACMX
3-PinTO-92LM79L05ACZ
LM79L12ACZ
LM79L15ACZ
6-Bump
microSMD
LM79L15ACTL
LM79L05ACTLX
320L79L05
320L79L12
320L79L15
XTPB
LM79L15ACM
LM79L12ACM
PackageMarking
LM79L05ACM
TransportMedia
95Units/Rail
2.5kUnitsTapeandReel
95Units/Rail
2.5kUnitsTapeandReel
95Units/Rail
2.5kUnitsTapeandReel
1800UnitsPerBox
1800UnitsPerBox
1800UnitsPerBox
250UnitsTapeandReel
3kUnitsTapeandReel
TLA06AMA
Z03A
NSCDrawing
M08A
2