LM340/LM78XX SeriesGeneral DescriptionFeaturesTypical ApplicationsOrdering InformationAbsolute Maximum RatingsOperating Conditions LM340A Electrical CharacteristicsLM140 Electrical Characteristics LM340/LM78XXC Electrical Characteristics LM7808C Electrical CharacteristicsTypical Performance CharacteristicsEquivalent SchematicApplication HintsSHORTING THE REGULATOR INPUTRAISING THE OUTPUT VOLTAGE ABOVE THE INPUT VOLTAGEREGULATOR FLOATING GROUND ()TRANSIENT VOLTAGESFIGURE 1. Input Short FIGURE 2. Regulator Floating Ground FIGURE 3. Transients HEATSINKING TO-263 AND SOT-223 PACKAGE PARTSFIGURE 4. (J-A) vs Copper (1 ounce) Area for the TO-263 Package FIGURE 5. Maximum Power Dissipation vs TAMB for the TO-263 Package FIGURE 6. (J-A) vs Copper (2 ounce) Area for the SOT-223 Package FIGURE 7. Maximum Power Dissipation vs TAMB for the SOT-223 Package Typical ApplicationsConnection Diagrams and Ordering InformationPhysical DimensionsLM340/LM78XX Series3-Terminal Positive RegulatorsGeneral DescriptionThe LM140/LM340A/LM340/LM78XXC monolithic3-terminal positive voltage regulators employ internalcurrent-limiting, thermal shutdown and safe-area compensa-tion, making them essentially indestructible. If adequate heatsinking is provided, they can deliver over 1.0A output cur-rent. They are intended as fixed voltage regulators in a widerange of applications including local (on-card) regulation forelimination of noise and distribution problems associatedwith single-point regulation. In addition to use as fixed volt-age regulators, these devices can be used with externalcomponents to obtain adjustable output voltages and cur-rents.Considerable effort was expended to make the entire seriesof regulators easy to use and minimize the number of exter-nal components. It is not necessary to bypass the output,although this does improve transient response. Input by-passing is needed only if the regulator is located far from thefilter capacitor of the power supply.The 5V, 12V, and 15V regulator options are available in thesteel TO-3 power package. The LM340A/LM340/LM78XXCseries is available in the TO-220 plastic power package, andthe LM340-5.0 is available in the SOT-223 package, as wellas the LM340-5.0 and LM340-12 in the surface-mount TO-263 package.Featuresn Complete specifications at 1A loadn Output voltage tolerances of±2% at Tj= 25˚C and±4%over the temperature range (LM340A)n Line regulation of 0.01% of VOUT/V of ∆VINat 1A load(LM340A)n Load regulation of 0.3% of VOUT/A (LM340A)n Internal thermal overload protectionn Internal short-circuit current limitn Output transistor safe area protectionn P+Product Enhancement testedTypical ApplicationsFixed Output Regulator Adjustable Output Regulator00778101*Required if the regulator is located far from the power supply filter.**Although no output capacitor is needed for stability, it does help transientresponse. (If needed, use 0.1 µF, ceramic disc).00778102VOUT= 5V + (5V/R1 + IQ) R2 5V/R1>3IQ,load regulation (Lr) ≈ [(R1 + R2)/R1] (Lrof LM340-5).Current RegulatorComparison between SOT-223 and D-Pak (TO-252)Packages00778103∆IQ= 1.3 mA over line and load changes.00778138Scale 1:1April 2003LM340/LM78XX Series 3-Terminal Positive Regulators© 2003 National Semiconductor Corporation DS007781 www.national.comOrdering InformationPackage TemperatureRangePart Number Packaging Marking Transport Media NSCDrawing3-Lead TO-3 0˚C to +125˚C LM340K-5.0 LM340K-5.0 7805P+ 50 Per Bag K02ALM340K-12 LM340K 12 7812P+ 50 Per BagLM340K-15 LM340K 15 7815P+ 50 Per Bag3-lead TO-220 0˚C to +125˚C LM340AT-5.0 LM340AT 5.0 P+ 45 Units/Rail T03BLM340T-5.0 LM340T5 7805 P+ 45 Units/RailLM340T-12 LM340T12 7812 P+ 45 Units/RailLM340T-15 LM340T15 7815 P+ 45 Units/Rail3-Lead TO-263 0˚C to +125˚C LM340S-5.0LM340S-5.0 P+45 Units/Rail TS3BLM340SX-5.0 500 Units Tape and ReelLM340S-12LM340S-12 P+45 Units/RailLM340SX-12 500 Units Tape and ReelLM340AS-5.0LM340AS-5.0 P+45 Units/RailLM340ASX-5.0 500 Units Tape and Reel4-LeadSOT-2230˚C to +125˚C LM340MP-5.0N00A1k Units Tape and Reel MA04ALM340MPX-5.0 2k Units Tape and ReelUnpackagedDie−55˚C to 125˚C LM140KG-5 MD8 221 Per Waffle Pack DL069089LM140KG-12 MD8 221 Per Waffle Pack DL059093LM140KG-15 MD8 221 Per Waffle Pack DL059093LM340/LM78XXwww.national.com 2Absolute Maximum Ratings (Note 1)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distributors for availability and specifications.(Note 5)DC Input VoltageAll Devices exceptLM7824/LM7824C 35VLM7824/LM7824C 40VInternal Power Dissipation (Note 2) Internally LimitedMaximum Junction Temperature 150˚CStorage Temperature Range −65˚C to +150˚CLead Temperature (Soldering, 10 sec.)TO-3 Package (K) 300˚CTO-220 Package (T), TO-263Package (S) 230˚CESD Susceptibility (Note 3) 2 kVOperating Conditions (Note 1)Temperature Range (TA) (Note 2)LM140A, LM140 −55˚C to +125˚CLM340A, LM340, LM7800 0˚C to +125˚CLM340A Electrical CharacteristicsIOUT= 1A, −55˚C ≤ TJ≤ +150˚C (LM140A), or 0˚C ≤ TJ≤ + 125˚C (LM340A) unless otherwise specified (Note 4)Output Voltage 5V 12V 15VSymbol Input Voltage (unless otherwise noted) 10V 19V 23V UnitsParameter Conditions Min Typ Max Min Typ Max Min Typ MaxVOOutput Voltage TJ= 25˚C 4.9 5 5.1 11.75 12 12.25 14.7 15 15.3 VPD≤ 15W, 5 mA ≤ IO≤ 1A 4.8 5.2 11.5 12.5 14.4 15.6 VVMIN≤ VIN≤ VMAX(7.5 ≤ VIN≤ 20) (14.8 ≤ VIN≤ 27) (17.9 ≤ VIN≤ 30) V∆VOLine Regulation IO= 500 mA 10 18 22 mV∆VIN(7.5 ≤ VIN≤ 20) (14.8 ≤ VIN≤ 27) (17.9 ≤ VIN≤ 30) VTJ= 25˚C 3 10 4 18 4 22 mV∆VIN(7.5 ≤ VIN≤ 20) (14.5 ≤ VIN≤ 27) (17.5 ≤ VIN≤ 30) VTJ= 25˚C 4 9 10 mVOver Temperature 12 30 30 mV∆VIN(8 ≤ VIN≤ 12) (16 ≤ VIN≤ 22) (20 ≤ VIN≤ 26) V∆VOLoad Regulation TJ= 25˚C 5 mA ≤ IO≤ 1.5A 10 25 12 32 12 35 mV250 mA ≤ IO≤ 750mA15 19 21 mVOver Temperature, 25 60 75 mV5mA≤ IO≤ 1AIQQuiescentCurrentTJ= 25˚C 6 6 6 mAOver Temperature 6.5 6.5 6.5 mA∆IQQuiescentCurrent5mA≤ IO≤ 1A 0.5 0.5 0.5 mAChange TJ= 25˚C, IO= 1A 0.8 0.8 0.8 mAVMIN≤ VIN≤ VMAX(7.5 ≤ VIN≤ 20) (14.8 ≤ VIN≤ 27) (17.9 ≤ VIN≤ 30) VIO= 500 mA 0.8 0.8 0.8 mAVMIN≤ VIN≤ VMAX(8 ≤ VIN≤ 25) (15 ≤ VIN≤ 30) (17.9 ≤ VIN≤ 30) VVNOutput NoiseVoltageTA= 25˚C, 10 Hz ≤ f ≤ 100 kHz 40 75 90 µVRipple Rejection TJ= 25˚C, f = 120 Hz, IO=1A688061726070dBor f = 120 Hz, IO= 500 mA, 68 61 60 dBOver Temperature,VMIN≤ VIN≤ VMAX(8 ≤ VIN≤ 18) (15 ≤ VIN≤ 25) (18.5