LM340   
Series 3-Terminal Positive Regulators 		Click link to Download

Features
•Complete specifications at 1A load
•Output voltage tolerances of ±2% at Tj = 25°C and ±4% over the temperature range (LM340A)
•Line regulation of 0.01% of VOUT/V of [Delta]VIN at 1A load (LM340A)
•Load regulation of 0.3% of VOUT/A (LM340A)
•Internal thermal overload protection
•Internal short-circuit current limit
•Output transistor safe area protection
•P+ Product Enhancement tested

Description

The LM140/LM340A/LM340/LM78XXC monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.0A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents.

Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.

The 5V, 12V, and 15V regulator options are available in the steel TO-3 power package. The LM340A/LM340/LM78XXC series is available in the TO-220 plastic power package, and the LM340-5.0 is available in the SOT-223 package, as well as the LM340-5.0 and LM340-12 in the surface-mount TO-263 package.
Also Recommended
LP38690▲Lower Quiescent Current, Stable With Ceramic Output Capacitors
LP38692▲Lower Quiescent Current, Stable With Ceramic Output Capacitors & Enable Pin
LP8340▲Improved Dropout Voltage, Supply Current



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Typical Application
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Connection Diagram
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Typical Performance
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Paramaters / ValuesLM340 LP38690 LP38692 LP8340
Output Current1000 mA 1000 mA 1000 mA 1000 mA
Output Voltage7.5, 12, 15, 8, 5 Volt 1.8, 5.0, 2.5, 3.3 Volt 1.8, 5.0, 2.5, 3.3 Volt Undefined Volt
Input Min Voltage7.5, 14.8, 10.5, 17.9 Volt 2.75, 3.95, 3.3, 5.45 Volt 2.95, 2.7, 5.45, 3.75 Volt 2.7 Volt
Input Max Voltage35 Volt 10 Volt 10 Volt 10 Volt
Adjustable OutputNo No No Yes
On/Off PinNo No Yes No
Error FlagNo No No No
Temperature Min0 deg C -40 deg C -40 deg C 0 deg C
Temperature Max70, 125 deg C 125 deg C 125 deg C 125 deg C
RegTypeLinear Regulator LDO LDO LDO
Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM340MP-5.0/NOPB
LM340MP-5.0

RoHS

Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide625
DIGIKEYWorldwide0
FARNELLEurope and Asia6559
FUTUREWorldwide1100
$0.50 each at 1K+ pcsreel
of
1000
LM340MPX-5.0/NOPB
LM340MPX-5.0

RoHS

Full production
Lead Time: 12 weeks

 
DistributorRegionQty
ARROWWorldwide2000
DIGIKEYWorldwide0
FUTUREWorldwide75
KEIKONGAsia Pacific2000
$0.50 each at 1K+ pcsreel
of
2000
LM7808CT/NOPB
LM7808CT

RoHS

Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
FARNELLEurope and Asia2783
$0.62 each at 1K+ pcsrail
of
45
LM340AT-5.0/NOPB
LM340AT-5.0

RoHS

Full production
Lead Time: 12 weeks

 
DistributorRegionQty
ARROWWorldwide939
AVNET-EMWorldwide507
DIGIKEYWorldwide1303
FARNELLEurope and Asia1390
FUTUREWorldwide1100
NEWARKAmericas1807
RS COMPONENTSWorldwide150
TAYLORAmericas4990
$0.67 each at 1K+ pcsrail
of
45
LM340T-12/NOPB
LM340T-12

RoHS

Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
ARROWWorldwide495
AVNET-EMWorldwide112
BRITESTONESouth Korea530
DIGIKEYWorldwide3400
FARNELLEurope and Asia5773
FUTUREWorldwide1100
KEIKONGAsia Pacific2560
NEWARKAmericas906
RS COMPONENTSWorldwide195
RSL MICROAsia Pacific40
TAYLORAmericas12510
$0.65 each at 1K+ pcsrail
of
45
LM340T-15/NOPB
LM340T-15

RoHS

Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
ARROWWorldwide589
DIGIKEYWorldwide927
FARNELLEurope and Asia3276
FUTUREWorldwide1100
KEIKONGAsia Pacific405
NEWARKAmericas2615
RS COMPONENTSWorldwide5
TAYLORAmericas55431
$0.65 each at 1K+ pcsrail
of
45
LM340T-5.0/NOPB
LM340T-5.0

RoHS

Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide2831
AVNET-EMWorldwide693
BRITESTONESouth Korea207
DIGIKEYWorldwide3724
FARNELLEurope and Asia3885
FUTUREWorldwide1100
NEWARKAmericas2607
RS COMPONENTSWorldwide205
TAYLORAmericas39754
$0.65 each at 1K+ pcsrail
of
45
LM340AS-5.0/NOPB
LM340AS-5.0

RoHS

Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
ARROWWorldwide92
DIGIKEYWorldwide0
$0.83 each at 1K+ pcsrail
of
45
LM340S-12/NOPB
LM340S-12

RoHS

Full production
Lead Time: 8 weeks

 
DistributorRegionQty
ARROWWorldwide660
AVNET-EMWorldwide158
DIGIKEYWorldwide1497
FARNELLEurope and Asia883
FUTUREWorldwide1100
NEWARKAmericas158
RS COMPONENTSWorldwide295
$0.65 each at 1K+ pcsrail
of
45
LM340S-5.0/NOPB
LM340S-5.0

RoHS

Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
ARROWWorldwide854
AVNET-EMWorldwide49
BRITESTONESouth Korea2
DIGIKEYWorldwide0
FARNELLEurope and Asia1450
FUTUREWorldwide1100
NEWARKAmericas1091
RS COMPONENTSWorldwide645
TAYLORAmericas115
$0.65 each at 1K+ pcsrail
of
45
LM340ASX-5.0/NOPB

RoHS

Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.83 each at 1K+ pcsreel
of
500
LM340SX-12/NOPB
LM340SX-12

RoHS

Full production
Lead Time: 8 weeks

 
DistributorRegionQty
ARROWWorldwide4000
DIGIKEYWorldwide0
FUTUREWorldwide846
$0.65 each at 1K+ pcsreel
of
500
LM340SX-5.0/NOPB
LM340SX-5.0

RoHS

Full production
Lead Time: 12 weeks

 
DistributorRegionQty
ARROWWorldwide400
AVNET-EMWorldwide2500
DIGIKEYWorldwide0
FUTUREWorldwide1100
NEWARKAmericas759
TECHMOSAAsia Pacific3000
$0.65 each at 1K+ pcsreel
of
500
LM340K-12/NOPB
LM340K-12

RoHS

Lifetime buy
Lead Time: 6 weeks

 
DistributorRegionQty
ARROWWorldwide75
DIGIKEYWorldwide0
FARNELLEurope and Asia175
TAYLORAmericas162
$21.90 each at 1K+ pcstray
of
50
LM340K-5.0/NOPB
LM340K-5.0

RoHS

Full production
Lead Time: 6 weeks

 
DistributorRegionQty
ARROWWorldwide95
AVNET-EMWorldwide321
DIGIKEYWorldwide508
FARNELLEurope and Asia561
FUTUREWorldwide147
TAYLORAmericas127
$21.90 each at 1K+ pcstray
of
50
LM7808C MDC

RoHS

Lifetime buy
Lead Time: 6 weeks

 

Contact your distributor
CALLtray
of
N/A
LM7808C MWC

RoHS

Full production
Lead Time: N/A

 

Contact your distributor
CALLwafer jar
of
N/A

Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM340AK-5.0
NONE
NONE
08 Sep 1999
LM340AS-5.0
LM340AT-5.0
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM340ASX-5.0
LM340AT-5.0
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM340AT-12
NONE
NONE
06 Sep 2000
LM340AT-15
NONE
NONE
06 Sep 2000
LM340K-12
LM140K-12
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM340K-15
LM117 STEEL
NSCE
03 Dec 2008
LM340LAH-12
LM140H-12/883
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM340LAH-15
NONE
NONE
08 Sep 1999
LM340LAH-5.0
LM140H-5.0/883
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM340LAZ-12
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM340LAZ-15
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LM340MP-5.0/NOPB
LM340MP-5.0
SOT-22341
1		260
260		RoHSDownloadN/A
XYTT
N00A
LM340MPX-5.0/NOPB
LM340MPX-5.0
SOT-22341
1		260
260		RoHSDownloadN/A
XYTT
N00A
LM7808CT/NOPB
LM7808CT
TO-22031
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LM7808CT
LM340AT-5.0/NOPB
LM340AT-5.0
TO-22031
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LM340AT
5.0 P+
LM340T-12/NOPB
LM340T-12
TO-22031
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LM340T12
7812 P+
LM340T-15/NOPB
LM340T-15
TO-22031
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LM340T15
7815 P+
LM340T-5.0/NOPB
LM340T-5.0
TO-22031
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LM340T5
7805 P+
LM340AS-5.0/NOPB
LM340AS-5.0
TO-26333
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LM340AS
-5.0 P+
LM340S-12/NOPB
LM340S-12
TO-26333
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LM340S
-12 P+
LM340S-5.0/NOPB
LM340S-5.0
TO-26333
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LM340S
-5.0 P+
LM340ASX-5.0/NOPB
TO-26333245RoHSDownloadN/A
NSUZXYTTE#
LM340AS
-5.0 P+
LM340SX-12/NOPB
LM340SX-12
TO-26333
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LM340S
-12 P+
LM340SX-5.0/NOPB
LM340SX-5.0
TO-26333
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LM340S
-5.0 P+
LM340K-12/NOPB
LM340K-12
TO-321
1		NA
NA		RoHSDownloadN/A
NS
ZXYTTE#
LM340K
12 7812P+
LM340K-5.0/NOPB
LM340K-5.0
TO-321
1		NA
NA		RoHSDownloadN/A
NS
ZXYTTE#
LM340K
-5.0 7805P+
LM7808C MDC
Unpackaged DieN/A
-
LM7808C MWC
WaferN/A
-

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM340AS-5.0SLM04404600353250011002356520
LM340ASX-5.0SLM04404600353250011002356520
LM340AT-5.0SLM04404600353250011002356520
LM340MP-5.0SLM04404600353250011002356520
LM340MPX-5.0SLM04404600353250011002356520
LM340S-12SLM04404600353250011002356520
LM340S-5.0SLM04404600353250011002356520
LM340SX-12SLM04404600353250011002356520
LM340SX-5.0SLM04404600353250011002356520
LM340T-12SLM04404600353250011002356520
LM340T-15SLM04404600353250011002356520
LM340T-5.0SLM04404600353250011002356520
LM7808CTSLM04404600353250011002356520

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM340AK-5.0
NONE
NONE
08 Sep 1999
LM340AS-5.0
LM340AT-5.0
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM340ASX-5.0
LM340AT-5.0
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM340AT-12
NONE
NONE
06 Sep 2000
LM340AT-15
NONE
NONE
06 Sep 2000
LM340K-12
LM140K-12
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM340K-15
LM117 STEEL
NSCE
03 Dec 2008
LM340LAH-12
LM140H-12/883
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM340LAH-15
NONE
NONE
08 Sep 1999
LM340LAH-5.0
LM140H-5.0/883
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM340LAZ-12
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM340LAZ-15
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008

[Information as of 22-Nov-2009]