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LM340  Product Folder

Series 3-Terminal Positive Regulators
Generic P/N 340
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics		 Application
Notes

Parametric Table Parametric Table
Temperature Min (deg C) , -55 
Temperature Max (deg C) 70, 125 
Multiple Output Capability No 
On/Off Pin No 
Error Flag - 
InputMin Voltage (Volt) 7.50, 14.60, 17.70, 10.50 
InputMax Voltage (Volt) 35 
Output Current (mA) 1000 
Watchdog - 
RegType Linear Regulator 
Output Voltage (Volt) 5, 12, 15, 8 

Datasheet

TitleSize in KbytesDate
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Download
Receive via Email
LM340 LM78XX Series 3-Terminal Positive Regulators 599 Kbytes 18-Apr-03 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM340MP-5.0SOT-2234StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.33reel
of
1000		XYTT
N00A
16 weeks0
LM340MPX-5.0SOT-2234StatusFull productionN/AN/A 
Buy Now 		1K+$0.33reel
of
2000		XYTT
N00A
16 weeks0
LM340AT-5.0TO 2203StatusFull productionN/AN/A 
Buy Now 		1K+$0.53rail
of
45		NSUZXYTT
LM340AT
5.0 P+
3-5 weeks60000
LM340T-12TO 2203StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.27rail
of
45		NSUZXYTT
LM340T12
7812 P+
9-11 weeks300000
LM340T-15TO 2203StatusFull productionN/AN/A 
Buy Now 		1K+$0.27rail
of
45		NSUZXYTT
LM340T15
7815 P+
4-6 weeks300000
LM340T-5.0TO 2203StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.27rail
of
45		NSUZXYTT
LM340T5
7805 P+
15-17 weeks500000
LM340AS-5.0TO 2633StatusFull productionN/AN/ASamples1K+$0.55rail
of
45		NSUZXYTT
LM340AS
-5.0 P+
13 weeks0
LM340S-12TO 2633StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.28rail
of
45		NSUZXYTT
LM340S
-12 P+
13 weeks0
LM340S-5.0TO 2633StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.28rail
of
45		NSUZXYTT
LM340S
-5.0 P+
13 weeks0
LM340ASX-5.0TO 2633StatusFull productionN/AN/A 1K+$0.55reel
of
500		NSUZXYTT
LM340AS
-5.0 P+
13 weeks0
LM340SX-12TO 2633StatusFull productionN/AN/A 
Buy Now		1K+$0.28reel
of
500		NSUZXYTT
LM340S
-12 P+
13 weeks0
LM340SX-5.0TO 2633StatusFull productionN/AN/A 
Buy Now 		1K+$0.28reel
of
500		NSUZXYTT
LM340S
-5.0 P+
13 weeks0
LM340K-12TO-32StatusFull productionN/AN/A 
Buy Now 		1K+$3.00tray
of
50		-
3-8 weeks5000
LM340K-15TO-32StatusFull productionN/AN/A 
Buy Now 		1K+$3.00tray
of
50		-
3-8 weeks5000
LM340K-5.0TO-32StatusFull productionN/AN/A 
Buy Now 		1K+$3.00tray
of
50		NSZXYTT
LM340K
-5.0 7805P+
3-8 weeks5000
LM340-5.0 MDAUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM340A-5.0 MDAUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM340-5.0 MWAWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM340A-5.0 MWAWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM340-12 MDCUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM340-15 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM7808C MDCUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM340G-12 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM340G-15 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM340G-5 MDCUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM340G-12 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM340G-15 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM340G-5 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM340-12 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM340-15 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM7808C MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM140KG-12 MD8Unpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM140KG-15 MD8Unpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM140KG-5 MD8Unpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM140KG-12 MW8WaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM140KG-15 MW8WaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM140KG-5 MW8WaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0

Obsolete Parts

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM340AK-12
LM340K-12
NATIONAL SEMICONDUCTOR
04/04/95
LM340AK-15
LM340K-15
NATIONAL SEMICONDUCTOR
04/04/95
LM340AK-5.0
LM140K-5.0
NATIONAL SEMICONDUCTOR
09/08/99
LM340AT-12
NONE
NONE
09/06/2000
LM340AT-15
NONE
NONE
09/06/2000
LM340KC-5.0
LM340K-5.0
NATIONAL SEMICONDUCTOR
04/04/95
LM340LAH-15
LM140LAH-15
NATIONAL SEMICONDUCTOR
09/08/99

General 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.

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

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM340-12 MDCSLM0350000015000003424108012
LM340-12 MWCSLM0350000015000003424108012
LM340-15 MDCSLM0350000015000003424108012
LM340-15 MWCSLM0350000015000003424108012
LM340AS-5.0SLM0350000015000003424108012
LM340ASX-5.0SLM0350000015000003424108012
LM340AT-5.0SLM0350000015000003424108012
LM340MP-5.0SLM0350000015000003424108012
LM340MPX-5.0SLM0350000015000003424108012
LM340S-12SLM0350000015000003424108012
LM340S-5.0SLM0350000015000003424108012
LM340SX-12SLM0350000015000003424108012
LM340SX-5.0SLM0350000015000003424108012
LM340T-12SLM0350000015000003424108012
LM340T-15SLM0350000015000003424108012
LM340T-5.0SLM0350000015000003424108012

For more information on Reliablitity Metrics, please click here.


Application Notes

TitleSize in KbytesDate
View Online
Download
Receive via Email
AB-12: Application Brief 12 Wide Adjustable Range PNP Voltage Regulator 40 Kbytes 3-Oct-02 View Online Download Receive via Email
Application Brief 12 Wide Adjustable Range PNP Voltage Regulator (JAPANESE)
 31 Kbytes   View Online Download Receive via Email
AN-103: Application Note 103 LM340 Series Three Terminal Positive Regulators 421 Kbytes 3-Oct-02 View Online Download Receive via Email
AN-1148: Application Note 1148 Linear Regulators: Theory of Operation and Compensation 200 Kbytes 25-Sep-02 View Online Download Receive via Email
AN-1149: Application Note 1149 Layout Guidelines for Switching Power Supplies 113 Kbytes 26-Sep-02 View Online Download Receive via Email
AN-1192: Application Note 1192 Overture Series High-Power Solutions 529 Kbytes 25-Sep-02 View Online Download Receive via Email
AN-127: LM 143 Monolithic High Voltage Operational Amplifier Applications 248 Kbytes 4-Nov-95 View Online Download Receive via Email
AN-181: Application Note 181 3-Terminal Regulator is Adjustable 165 Kbytes 3-Oct-02 View Online Download Receive via Email
AN-182: Application Note 182 Improving Power Supply Reliability with IC Power Regulators 56 Kbytes 3-Oct-02 View Online Download Receive via Email
AN-202: A Digital Multimeter Using the ADD3501 124 Kbytes 4-Nov-95 View Online Download Receive via Email
AN-222: Application Note 222 Super Matched Bipolar Transistor Pair Sets New Standards for Drift and Noise 464 Kbytes 1-Oct-02 View Online Download Receive via Email
AN-298: Application Note 298 Isolation Techniques for Signal Conditioning 455 Kbytes 2-Oct-02 View Online Download Receive via Email
AN-556: Application Note 556 Introduction to Power Supplies 159 Kbytes 25-Sep-02 View Online Download Receive via Email
AN-76: Applying Modern Clock Drivers to MOS Memories 213 Kbytes 4-Nov-95 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 15-Jan-2004]

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