SBE D MM 6501124 0076365 997 MENSC2 Za National Semiconductor NATL SEMICOND (LINEAR) TSB-U-1S LM140A/LM140/LM340A/LM340/LM7800/LM7800C Series 3-Terminal Positive Regulators General Description The LM140A/LM140/LM340A/LM340/LM7800/LM7800C monolithic 3-terminal positive voltage regulators employ in- ternal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If ad- equate heat sinking is provided, they can deliver over 1.0A output current. They are intended as fixed voltage regula- tors 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. Features Complete specifications at 1A load m Output voltage tolerances of +2% at Tj = 25C and +4% over the temperature range (LM140A/LM340A) @ Line regulation of 0.01% of VouT/V of AViy at 1A load (LM140A/LM340A) @ Load regulation of 0.3% of VouT/A (LM140A/LM340A) @ Internal thermal overload protection B Internal short-circuit current limit w Output transistor safe area protection m P+ Product Enhancement tested Considerable effort was expended to make the entire series Device Output Voltages Packages of regulators easy to use and minimize the number of exter- LM140A/LM140 | 5, 12, 15 TO-3 (KK) hal components. It is not necessary to bypass the output, although this does improve transient response. Input by- LM340A/LM340 | 5, 12, 15 TO-3 (K), TO-220 (1) passing is needed only if the regulator is located far from LM7800 8, 18, 24 TO-3 (K), TO-220 (T) the filter capacitor of the power supply. LM7800C 5,6, 8, 12, 15, TO-3 (K), TO-220 The entire series of regulators is available in the steel TO-3 18, 24 K) m) power packages. The LM340A/LM340/LM7800/LM7800C . series is also available in the TO-220 plastic power pack- age. Typical Applications Fixed Output Regulator Adjustable Output Regulator Current Regulator INPUT Lmseo-xx OUTPUT INPUT Lwao.5.0 ouTPUT INPUT iMge0.xx GND | < cit > RI < oat " ? 0228 $" < R2 = ___ + P. out TL/H/7781-1 { TLAH/7781-3 *Required it the regulator is located far from the LL v2-3 power supply filter. = lout = a + lg **Although no output capacitor is needed for sta- bility, it does help transient response. (If need- ed, use 0.1 pF, ceramic disc). LM340-5), TLIH/7781-2 alg = 1.3 mA over line and toad changes. Vout = 5V + (5V/Rt + ig) R2 5V/R1 > 3 Ig, load regulation (L,)} = [(Ri + RA2)/R1) (L, of 1-101 90082IN1/008ZIN1/OPEW1/VOPENT/0F1A1/VOPLATLM140A/LM140/LM340A/LM340/LM7800/LM7800C S8E D MM 6503324 OO?b3bb 623 MENSCe Absolute Maximum Ratings (note 1) Operating Conditions (note 1) If Military/Aerospace specified devices are required, Temperature Range (Ta) (Note 2) please contact the National Semiconductor Sales LM140A, M140, LM7808, Office/Distributors for availability and specifications. LM7818, LM7824 55C to + 125C (Note 5) LM340A, LM340, LM7805C, DG Input Voltage LM7812C, LM7815C orc to + 70C All Devices except LM7824/LM7824C 35V LM7806C, LM7808C, LM7818C, , LM7824/LM7824C 40V LM7824C OC to + 126C Internal Power Dissipation (Note 2) Internally Limited Maximum Junction Temperature 150C Storage Temperature Range 65C to + 150C NAT Lead Temperature (Soldering, 10 sec.) L SE NICO ND CL INEAR) TO-3 Package (K, KC) 300C TO-220 Package (T) 230C ESD Susceptibility (Note 3) 2kV LM140A/LM340A Electrical Characteristics lout = 1A, 55C < Ty s +150C (LM140A), or OC < Ty < + 125C (LM340A) unless otherwise specified (Note 4) Output Voltage 5V 12V 15V Symbol Input Voltage (unless otherwise noted) 10V 19V 23V Units Parameter Conditions Min | Typ Max| Min | Typ | Max | Min Typ | Max Vo Output Voltage Ty = 25C 49 5 5.1111.75 12 12.265) 14.7 15 15.3 v Pp s 18W,5 MA < Io S 1A 4.8 5.2 111.5 12.5| 14.4 15.6 v Vain < Vin < VMax (7.5 < Vin S 20)] (14.8 < Vin < 27)| (17.9 < Vin < 30) Vv AVo Line Regulation lo = 500 mA 10 18 22 mV AVIN (7.5 < Vin S 20)| (14.8 < Vin < 27)| (17.9 < Vin < 30) | V Ty = 25C 3 10 4 18 4 22 | mV AVIN (7.5 < Vin < 20)| (14.5 < Vin < 27)| (17.5 < Vin $30) | V Ty = 25C 4 9 10 | mv Over Temperature 12 30 30 mV AVIN (8 < Vin < 12) | (16 < Vin < 22) | (20 < Vin S$ 26) Vv AVg __ jLoad Regulation Ty = 25C/5 mA < lo < 1.5A 10 25 12 32 12 35 | mv 250 mA < Io < 750 mA 15 19 21 mV Over Temperature, 5mA<Io<1A 25 60 75 | mv la Quiescent Current = |Ty = 26C 6 6 6 mA Over Temperature 6.5 6.5 6.5 | mA Ala Quiescent Current |5mA<Io <1A 0.5 0.5 0.5 | mA Change Ty = 25C, Io = 1A 0.8 0.8 0.8 | mA Vain < Vin = Vaax (7.5 S Vin < 20)| (14.8 < Vin S 27)} (17.9 < Vin < 30) 4) OV lo = 500 mA 0.8 0.8 0.8 mA Vain < Vin S Vax (8 < Vin < 25) | (15 < Vin < 30) | (17.9 < Vin < 30) v Vn Output Noise Voltage|Ta = 25C, 10 Hz < f < 100 kHz 40 75 90 BV AVin_ [Ripple Rejection Ty = 25C, f = 120Hz,I9 = 1A 68 80 61 72 60 70 dB AVout orf = 120 Hz, lo = 500 mA, 68 61 60 dB Over Temperature, Vain < Vin S Vax (8 < Vin < 18) | (15 < Vin S 25) [(18.5 < Vin < 28.5)| V Ro Dropout Voltage Ty = 28C, lo = 1A 2.0 2.0 2.0 Vv Output Resistance |f = 1 kHz 8 18 19 mo Short-Circuit Current |Ty = 25C 2.1 1.5 1.2 A Peak Output Current |Ty = 25C 2.4 2.4 2.4 A Average TC of Vo Min, Ty = 0C, lop = 5mA 0.6 -1.5 -1.8 mv/C Vin Input Voltage Ty = 26C Required to Maintain 7.5 14.5 17.5 v Line Regulation 4-102S8E D MB 6501124 007b3b7 7bT MBNSCe2 a r NATL SEM = L140 ICOND (LINEAR) = . . a So Electrical Characteristics (note 4) 55c < T, < + 150C unless otherwise specified > r Output Voltage 5V 12V 15V = oh Symbol Input Voltage (unless otherwise noted) 10V 19V 23Vv Units s Parameter Conditions Min | Typ | Max Min | Typ | Max | Min | Typ | Max r Vo __ | Output Valtage Ty = 25C, 5mA < Ig < 1A 48 5 62/115 12 125/144 16 156] V = Pp < 15W,5mMA < Ig < 1A 4.75 5.25] 11.4 12.6 | 14.25 16.751 V Ss Vuin < Vin < Vmax (@< Vin < 20) | (15.5 < Vins 27)| (185s Vins 30) | V_ | > AVg __ {Line Regulation lp = 500 mA [Ty = 25C 3 50 4 120 4 150 | mv & AVIN (7 < Vin Ss 25) | (14.5 < Vin < 30)] (17.5 < Vy s 30) v @ 56C < Ty < + 150C 50 120 150 mV S AVIN (8s Vins 20) | (15<Vins27) | (185<Vns90) | Vo| Io <1A Ty = 25C 50 120 150 | mv = AVIN (7.5 < Vin < 20) | (14.6 < Vin S$ 27) |] (17.7 < Vin < 30) v g 55C < Ty < +150C 25 60 7 | mv |2 AVN (8 < Vin s 12) (16 < Vin < 22) (20 < Vin < 26) v 5 AVo |Load Regulation |T)= 25C |SmAS Ig <1.5A 10 50 12 120 20 150] mv | NG 250 mA < Ip < 750 mA 25 60 7 | mv | 8 oS 55C < Ty < +150C, a 5mA <Ig <1A 50 120 150 mV la Quiescent Current [Ig < 1A Ty = 286C 6 6 6 mA 66C < Ty < +150C 7 7 7 mA Alg Quiescent Current |[5mA < Ig < 1A 05 0.5 0.5 | mA Change Ty = 25C, lg < 1A 0.8 0.8 0.8 | mA Vein = Vin = Vax (8 < Vin < 20) (15 < Vin < 27) (18.5 < Vin < 30) Vv lo = 500 mA, 55C < Ty < +150C 0.8 0.8 0.8 mA Vein S Vin < Vax (8 < Vin Ss 25) | (15 s Vin < 30) (18.5 < Vin < 30) Vv VN Output Noise Voltage|/Ta = 25C, 10 Hz < f < 100 kHz 40 75 90 pV AVin_ [Ripple Rejection lo 1A, Ty = 25Cor| 68 80 61 72 60 70 dB AVout f=120Hz + Io < 500mA, 68 61 60 dB 55C < Ty) s+ 150C Vein < Vin S Vax (8 < Vin < 18) | (15 < Vin < 25) | (18.5 < Vin < 28.5) v Ro [Dropout Voltage [Ty = 25C,Ig = 1A 2.0 2.0 20 v Qutput Resistance [f= 1 kHz 8 18 19 mo Short-Circuit Current |Ty = 25C 21 1.5 1.2 A Peak Output Current |T) = 25C 24 24 24 A Average TC of Voyr |0C < Ty < + 150C, Ig = 5mA -0.6 -1.5 -18 mv?C VIN Input Voltage Ty = 25C, Ig < 1A Required to Maintain 7.5 14.6 17.7 v Line Regulation , 1-103LM140A/LM140/LM340A/LM340/LM7800/LM7800C S58E D MM 65011324 0076368 &Tb MNSCe LM340/LM7800C NATL SEMICOND (LINEAR) Electrical Characteristics (note 4) oc < T, < + 125C unless otherwise specified Output Voltage 5V 12V 15V Symbol Input Voltage (unless otherwise noted) 10V 19V 23V Units Parameter Conditions Min | Typ | Max | Min Typ | Max | Min Typ | Max Vo Output Voltage Ty = 26C, 5mA < lo < 1A 48 5 2)115 12 125] 14.4 15 15.6 v Pp < 15W,5mMA < Ig S 1A 4,76 5.25 | 11.4 12.6 | 14.25 15.75 v Vain S Vin S Vmax (7.5 < Vin = 20) | (14.5 s Vin < 27) (17.5 < Vin s 30) Vv AVo Line Regulation lo = 500 MAITy = 25C 3 50 4 120 4 150 mV AVIN (7 < Vin Ss 25) (14.5 < Vin < 30) (17.5 < Vin S 30) Vv oc < Ty s +126C 50 120 150 mV AViIN (8 < Vin < 20) (15 < Vin Ss 27) (18.5 < Vin s 30) Vv los 1A Ty = 26C 50 120 150 mV AVIN (7.5 < Vin S 20) | (14.6 < Vin < 27) (17.7 < Vin s 30) Vv oc < Ty s +125C 25 60 75 mv AVIN (8 < Vin s 12) (16 < Vin S 22) (20 < Vin < 26) v AVq_ |LoadRegulation [Ty = 25C |5mMA< Ig <1.5A 10 60 12 120 12 150 | mv 250 mA < Iq s 750 mA 25 60 75 mV 5mA < Io < 1A,0C < Ty < +125C 50 120 150 mV Ig Quiescent Current Ios 1A = [Ty = 28C 8 8 a | ma oc < Ty s +126C 8.5 3.5 8.5 mA Alg Quiescent Current |&mA< Ig < 1A 0.5 0.5 0.6 mA Change Ty = 25C, lo < 1A 1.0 1.0 1.0 | mA VMIN S Vin S Vmax (7.5 < Vin S 20) | (14.8 < Vin < 27) (17.9 < Vin s 80) v Io < 500 mA, OC < Ty < + 126C 1.0 1.0 1.0 mA Vain S Vin S Vax (7 < Vin s 25) (14.5 < Vin < 30) (17.5 $ Vin s 30) v Vu Output Noise Voltage| Ta = 25C, 10 Hz < f < 100 kHz 40 75 90 pV AVin_ [Ripple Rejection Io < 1A, Ty = 25C 62 80 55 72 54 70 aB BVout f=120Hz 4 orlg < 500mA, 62 55 54 dB OC < Ty < +125C Vain = Vin < VMAx (8 < Vin s 18) (15 < Vin s 25) (18.5 < Vin < 28.5) Vv Ro Dropout Voltage Ty = 25C, lo = 1A 2.0 2.0 2.0 Vv Output Resistance = 1kHz 8 18 19 ma Short-Circuit Current | Ty = 25C 21 1.5 1.2 A Peak Output Current {Ty = 25C 2.4 2.4 2.4 A Average TC of Vour j0C < Ty s + 128C, lo = SMA 0.6 -1.5 -1.8 mV/C VIN Input Voltage Ty = 25C, lo S 1A Required to Maintain 7.5 14.6 17.7 Vv Line Regulation Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur, Operating Conditions ara conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics. Note 2: The maximum allowable power dissipation at any ambient temperature is a function of the maximum junction temperature for operation (Tymax = 125C or 150C), the junction-to-ambient thermal resistance (84), and the ambient temperature (Ta). Pomax = (Tumax Ta)/8ya, If this dissipation Is exceeded, the die temperature will risa above Tyywax and the electrical specifications do not apply. If the die temperature rises above 150C, the device will go inte thermal shutdown. Far the TO-3 package (K, KC), the junction-to-ambient thermal resistance (84) is 39C/W. When using a heatsink, 6, is the sum of the 4C/W junction-to-casa thermal resistance (@jc) of the TO-3 package and the case-to-ambient thermal resistance of the heatsink. For the TO-220 package (7), 9,4 Is 54C/W and Oc is 4ciw, Note 3: ESD rating is based on the human body model, 100 pF discharged through 1.5 ko. Note 4: All characteristics ara measured with a 0.22 uF capacitor from input to ground and a 0.1 uF capacitor from output to ground. All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (ty < 10 ms, duty cycle < 5%). Output voltage changes due to changes in internal temperature must be taken into account separately. Note 5: A military RETS specification is available on request. At the time of printing, the military RETS spacifications for the LM140AK-5.0/883, LM140AK-12/883, and LM140AK-15/883 complied with the min and max limits for the respective versions of the LM140A. At the time of printing, the military RETS specifications for the LM140K-5.0/883, LM140K-12/889, and LM140K-15/883 complied with the min and max limits for the respective versions of the LM140. The LM140H/883, LM140K/883, and LM140AK/889 may also be procured as a Standard Military Drawing. 1-104S6E D MM 6501124 0076369 532 MENSC2 rc LM7806C NATL SEMICOND (LINEAR) = Electrical Characteristics S OC < Ty < +150C, Vj = 11V, Io = 500 mA, C; = 0.33 pF, Co = 0.1 pF, unless otherwise specified > Symbol Parameter Conditions (Note 4) Min | Typ | Max Units = Vo Output Voltage Ty = 25C 5.75 | 60 | 625 v = AVo Line Regulation Ty = 25C 8.0V < V, < 25V 5.0 | 120 mV c 9.0V < V) < 13V 1.5 60 2 AVo Load Regulation Ty = 26C 5.0mA < Io < 1.5A 14 120 mv $ 250 MA < Io < 750MA 40 | 60 r Vo Output Voltage 8.0V < V, < 21V, 5.0 mA < Io < 1.0A,P < 15W 5.7 6.3 v = lo Quiescent Current Ty = 25C 43 | 80 | ma S Ala Quiescent Current | With Line 8.0V < V| < 25V 1.3 mA = Change With Load | 5.0mA <I9 < 1.0A 05 = Vn Noise Ta = 25C, 10 Hz < f < 100 kHz 45 BV 3. AV|/AVo | Ripple Rejection f = 120 Hz, lo = 350 mA, Ty = 25C 59 75 dB e Voo Dropout Voltage Io = 1.0A, Ty = 25C 2.0 v | Ro Output Resistance f = 1.0 kHz 9 ma 3 los Output Short Circuit Current Ty = 25C, V, = 35V 550 mA IpK Peak Output Current Ty = 25C 2.2 A AVo/AT Average Temperature lo = 5.0 mA, OC < Ta s +128C 08 mV/C Coefficient of Output Voltage LM7808/LM7808C Electrical Characteristics 55c < T, < + 150C (LM7808) or OC < Ty < +150C (LM7808C), V) = 14V, lo = 500 mA, Cy = 0.33 pF, Co = 0.1 wF, unless otherwise specified Symbol Parameter Conditions (Note 4) nw7e08 LM7608C Units Min| Typ | Max| Min| Typ| Max Vo Output Voltage Ty = 25C 7.7} 8.0 | 8.3 | 7.7| 8.0 | 8.3 v AVo Line Regulation Ty = 25C 10.5V < V < 25V 6.0 | 80 6.0 | 160 mV 11.0V <V)< 17V 2.0 | 40 2.0 | 80 AVo Load Regulation Ty = 25C 5.0 mA < Io < 1.54 12 | 100 12 | 160 mV 250 mA < Ig < 750 mA 4.0! 40 4.0] 80 Vo Output Voltage 11.5V < V| < 28V, 5.0 mA < Ip < 1.0A,P < 15W 7.6 8.4| 7.6 8.4 v la Quiescent Current Ty = 26C 4.3| 6.0 4.3 | 8.0 mA Alg Quiescent With Line |11.5V < V| < 25V 0.8 1.0 Current Change | with Load|5.0 MA < Io < 1.0A 0.5 os} Vn Noise Ta = 25C, 10 Hz < f < 100 kHz 64 | 320 52 pv AV|/AVo| Ripple Rejection f = 120 Hz, Io = 350 mA, Ty = 25C 62 | 72 56 | 72 dB Vpo Dropout Voltage lo = 1.0A, Ty = 25C 2.0 | 25 2.0 v Ro Output Resistance f = 1.0 kHz 16 16 ma los Output Short Circuit Current | Ty = 25C, V; = 35V 0.75) 1.2 0.45 A IpK Peak Output Current Ty = 25C 1.3| 2.2 | 3.3 2.2 A AVo/AT | Average Temperature lo = 5.0mA LM7808 | 55G < Ta < +25C 0.4 mV/C/Vo Coefficient of Output LM7808 +25C < Ta s +125C 0.3 Voltage LM7608G 0.8 mVPG Note 4: All characteristics are measured with a 0.22 F capacitor from input to ground and a 0.1 wF capacitor from output to ground. All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (ty < 10 ms, duty cycle < 5%). Output voltage changes due to changes in internal temperature must be taken into account separately. 1-105S6E D MM 6501124 0076370 254 MENSC2 Oo = Electrical Characteristics ss-c < 1, < + 150C (LM7818) or 0C < Ty < + 150C (LM7818C), V| = 27V, a Ig = 500 mA, Ci = 0.33 uF, Co = 0.1 pF, unless otherwise specified Ss Symbol Parameter Conditions (Note 4) L M7818 LM7818C Units KR Min | Typ | Max! Min | Typ | Max = Vo Output Voltage Ty = 26C 17.3| 18.0] 18.7] 17.3] 18.0} 18.7 Vv $ AVo Line Regulation Ty = 25C 21V < Vs 33V 15 | 180 15|360) oo 24V < V, < 30V 5.0 | 90 5.0 | 180 a AVo Load Regulation Ty = 25C 5.0mMA < Ig < 1.5A 12 | 180 12 | 360 mV 4 250 mA < Ip < 750 mA 4.0 | 90 4.0 | 180 Vo Output Voltage 22V < V| < 38V,5.0mMA < Ig < 1.0A,P < 15W 17.1 18.91 17.1 18.9 v = i lg Quiescent Current Ty = 25C 4.5 | 6.0 4.5 | 8.0 mA S Aig Quiescent With Line |22V < V, < 33V 0.8 1.0 mA = Current Change | with Load| 5.0 mA < Io < 1.0A 0.5 0.5 5 Vn Noise Ta = 25C, 10Hz < f < 100 kHz 144| 720 110 pV = | AVi/AVo] Ripple Rejection f = 120 Hz, ig = 350 mA, Ty = 25C 59 | 69 53 | 69 dB $ | Yoo Dropout Voltage lo = 1.0A, Ty = 25C 2.0 2.0 Vv = Ro Output Resistance f = 1.0 kHz 22 22 mo -l los Output Short Circuit Current 1Ty = 25C, V| = 35V 0,76 0.20 A IpK Peak Output Current Ty = 25C 1.3] 2.2] 3.3 21 A AVo/A4T | average Temperature lo = 5.0 mA LM7818 | -55C < Ta < +25C 0.4 mV/*C/No Coefficient of Output LM7818 | +26C < Ta < +125C 0.3 Voltage LM7818C 1.0 mv/eC LM7824/LM7824C Electrical Characteristics ssc < T; < + 150C (LM7824) or 0C < Ty < +150C (LM7824C), V; = 33V, lo = 500 mA, C) = 0.33 nF, Co = 0.1 uF, unless otherwise specified Symbol Parameter Conditions (Note 4) LM7624 LM7624C Units Min | Typ} Max] Min | Typ| Max Vo Output Voltage Ty = 25C 23.0} 24.0] 25.0} 23.0] 24.0] 25.0 Vv AVo Line Regulation Ty = 25C 27V < Vs 38V 18 | 240 18 | 480 mV 80V < V, < 36V 6.0 | 120 6.0 | 240 AVo Load Regulation Ty = 25C 5.0mA < Ig < 1.5A 12 | 240 12 | 480 mV 250 mA < Ig < 750 mA 4.0 { 120 4,0 | 240 Vo Output Voltage 28V < V < 38V,5.0 mA < Ip < 1.0A,P < 15W 22.8; 25.2| 22.8 25.2 v la Quiescent Current Ty = 25C 4.6 | 6.0 4.6 | 8.0 mA Ala Quiescent With Line |28V < V| < 38V 0.8 1.0 Current Change | with Load|5.0 mA < Ig < 1.0A 0.5 os| VN Noise Ta = 25C, 10 Hz < f < 100 kHz 192| 960 170 py AV|/AVQ{ Ripple Rejection = 120 Hz, lo = 350 mA, Ty = 25C 56 | 66 50 | 66 dB Vpo Dropout Voltage lo = 1.0A, Ty = 25C 2.0 | 2.5 2.0 v Ro Output Resistance f = 1.0 kHz 28 28 moa los Output Short Circuit Current. [Ty = 25C, V) = 35V 0.75] 1.2 0,15 A Ipx Peak Output Current Ty = 26C 1.3 | 2.2) 3.3 2.1 A AVo/AT | average Temperature lo = 5.0mA LM7824_|55C < Ta < +25C 0.4 mV/*C/Vo Coefficient of Output LM7824 |+25C < Ta s +125C 0.3 Voltage LM78246 1.5 mv/C Note 4: All characteristics are measured with a 0.22 pF capacitor from input to ground and a 0.1 wF capacitor from output to ground, All characteristics except neise voltage and ripple rejection ratio are measured using pulse techniques {ty < 10 ms, duty cycte < 5%), Output voltage changes due to changes in internal temperature must be taken into account separately. 1-106S8E D MM 6501124 0076371 150 MMENSCe rc _ NATL SEMICOND (LINEAR) |& Typical Performance Characteristics = So Maximum Average Power Maximum Average Power > Dissipation Dissipation Peak Output Current r Fy 2 a5 - = oh zu a S z g 3 1 r 2 ou E is e = < < = a 8 % 8 a ow Se ww 5 o : E > gy , 3 i re = 8 = -75 -60-25 D 26 6 75 108 126 6 25 @ Ds) @ & 0 8 2 26M o AMBIENT TEMPERATURE (C) AMBIENT TEMPERATURE (C) INPUT TO OUTPUT DIFFERENTIAL (V) rc = 2 Output Voltage (Normalized 8 to 1V at T; = 25C) 0 Ripple Rejection Ripple Rejection = 1.010 1 T a ge s ~Your* CTT A UT = gos aan Ty a ~ 2 Freed dH s o Bo = Lh So 5 0.905 3 mani z So Su "Cnn Ut F E pee S | | i. HH 3 3 2 yg LUM SU 2 goes ~~ COM UT LIT 4 1.0m 2 one Bog | Cinco 8 oc +25 Vem eT E Vin-Vour* # Voc +35 Vom 2 tour = 1A ae lour= 14 S 9.978 T= 28 Ye2sc 2 ! 0978 o 18 50-25 0 26 50 76 180.125 186 10 1 th 10k 100% o 5 10 tf rs) 25 SUNCTION TEMPERATURE (C) FREQUENCY {Hz} OUTPUT VOLTAGE () Note: Shaded area refers to LM340A/LM340, LM7805C, LM7812C and LM7815C. Output Impedance Dropout Characteristics Quiescent Current 1 = 4 65 a hOv - = BV =25C -_ a5V = = = < = 2 ties : ps . z 01 8 = s 5 Fs s $ 3 4s = 5 : oa E 8 E So wa a 3 0.001 36 10100 stkSstKkSseSt a 2 4 1 10 -75 -50-25 8 25 BO 75 10 128 150 FREQUENCY {Hz} INPUT VOLTAGE () JUNCTION TEMPERATURE (C) Note: Shaded area refers to LM340A/LM340, LM7805C, LM7812C and LM7815C. Dropout Voltage Quiescent Current 25 = = 100 mV Vout = 2 2 = IouT = 18 =A z * = Tj" 26C = s 15 = a s 5, = F as 5 5 a 4 = a -75 -50-25 D 26 5D 75 180 125 160 6 10 #1 2 2 3% & JUNCTION TEMPERATURE (C) INPUT VOLTAGE (V) Note: Shaded area refers to LM340A/LM340, LM7805C, LM7812C and LM7615C. TUH/7781~4 1-107S46E D MM 6501124 0076372 O27 MMNSC2 Typical Performance Characteristics (continued) Load Regulation Line Regulation 140AK-5.0, Vin = 10V, Ta = 25C 140AK-5.0, lout = 1A, Ta = 25C a CREE Ret 3 Ss s SRE Em Giree cet z = 5 Ss o 5 5 = 4.995 > > as 4.995 mS 4990 2S 4.990 8s ze ai 2 2? Ban Ua = Fis ater ea = o 15 a aww A - = 5 a a : 3 > c > S bE s e a z ta 5 0 < & ec a Ss > = 5 q 05 3 10 3 z m _ 18 . oz TIME (5 ms/O1V) TIME (5 ms/DIV) TL/H/7781-5 TL/H/7781-6 Equivalent Schematic q NATL SEMICOND CLINEAR) e VIN a1 J + a15 ori > R17 a16 4 < > 80k S16k j 5 RIS < Boz 162k $ Ha 014 oA Ata LM140A/LM140/LM340A/LM340/LM7800/LM7800C ad rig (380 $Rt6 100 S025 Vout > Ss on 3 R20 a Dt gai Saar 2r2i 22.67% $A13 > 930 a TLAH/7781-7 1-108ssE ) = 6501324 0076373 Th3 MBNSCe Application Hints The LM340/LM78XX series is designed with thermal pro- tection, output short-circuit protection and output transistor safe area protection. However, as with any IC regulator, it becomes necessary to take precautions to assure that the regulator is not inadvertently damaged. The following de- scribes possible misapplications and methods to prevent damage to the regulator. Shorting the Regulator Input: When using large capaci- tors at the output of these regulators, a protection diode connected input to output (Figure 7) may be required if the input is shorted to ground. Without the protection diode, an input short will cause the input to rapidly approach ground potential, while the output remains near the initial VouT be- cause of the stored charge in the large output capacitor. The capacitor will then discharge through a large internal input to output diode and parasitic transistors. If the energy released by the capacitor is large enough, this diode, low current metal and the regulator will be destroyed. The fast diode in Figure 7 will shunt most of the capacitors discharge current around the regulator. Generally no protection diode is required for values of output capacitance < 10 pF. 1n4002 VIN 340 | Vout Wl? ~ TUM/T761-8 FIGURE 1. Input Short A_- NATL SEMICOND (LINEAR) Raising the Output Voltage above the Input Voltage: Since the output of the device does not sink current, forcing the output high can cause damage to internal low current paths in a manner similar to that just described in the Shorting the Regulator Input section. Regulator Floating Ground (Figure 2}: When the ground pin alone becomes disconnected, the output approaches the unregulated input, causing possible damage to other cir- cuits connected to Vour. If ground is reconnected with pow- er ON, damage may also occur to the regulator. This fault is most likely to occur when plugging in regulators or mod- ules with on card regulators into powered up sockets. Power should be turned off first, thermal limit ceases operating, or ground should be connected first if power must be left on. Transient Voltages: If transients exceed the maximum rat- ed input voltage of the device, or reach more than 0.8V below ground and have sufficient energy, they will damage the regulator. The solution is to use a large input capacitor, a series input breakdown diode, a choke, a transient sup- pressor or a combination of these. T TT TL/H/7761-9 FIGURE 2. Regulator Floating Ground VIN Vin 340 p Vout | ! _L ! + TL/H/7781-10 FIGURE 3. Transients 900821N1/008Z1N'1/OPEN1/VOPENT/0PLWT/VOPLATS8E D MM 6501324 0076374 ITT MENSCe2 NATL SEMICOND (LINEAR) Typical Applications Fixed Output Regulator High input Voltage Circuits 1 2 1 2 vy fe | LM7800 fe Vo yj LM7800 Tt Vo + + 0.22 uF 3 0.1 pF . 3 0.1 uF | | (NOTE 1) TL/H/7781-13 TL/H/7781-14 Note 1: Bypass capacitors are recammended for optimum stability and tran- sient response, and should be located as close as possible to the regulator. TL/H/7781-15 High Current Voltage Regulator Qi \ 2N6133 at LM140A/LM140/LM340A/LM340/LM7800/LM7800C R1 3.0n ee, N= - LM7800 | L 1 A(Q1) = O Max 0.22 uF . IREG Max T 5 T a= 22.2 B(Q1) VeeQi) IReg = 'REG Max (8 + 1) ~ lomax - TL/H/7781 -16 High Output Current, Short Circuit Protected ai ise 2N6 152 AA VVV LM7800 1 VV > OuT 0.8 L Rgc = 0.1 wF Se isc . 3 Ri= BVBE(Q1) IREG Max (8 + 1) lo Max TL/H/7781-17 Positive and Negative Regulator LM7800 f q LM7800 TL/H/7761-18S6E D MM 6501124 0076375 3b MENSC2 Connection Diagrams and Ordering Information TO-3 Metal Can Package (K and KC) NATL SEMICOND (LINEAR) TO-220 Power Package (T) GND a O GND TL/H/7781-11 INPUT Bottom View Steel Package Order Numbers: TL/H/7781-12 LM140AK-5.0 LM140AK-12 LM140AK-15 Top View LM140K-5.0 LM140K-12 LM140K-15 Plastic Package Order Numbers: LM140AK-5.0/883 LM140AK-12/883 LM140AK-15/883 LM140K-5.0/883 LM140K-12/883 LM140K-15/883 LM340AK-5.0 LM340AK-12 LMS40AK-15 LM340AT-5.0 LM340T-5.0 LMS40AT-12 LM340T-12 LMS40AT-15 LM340T-15 LM340K-5.0 LM340K-12 LM340K-15 LM7806CK LM7808CK LM7808K th etecr tN bose LM7818CK LM7818K LM7824CK LM7808CT LM7818CT LM7824K LM7824CT See Package Number K02A See Package Number T03B Aluminum Package Order Numbers: LM340KC-5.0 LM340KC-12 LM340KC-15 LM7805CK LM7812CK LM7815CK See Package Number KC02A TO-39 Metal Can Package (H) OQ IN OUT GND Top View Metal Can Order Numberst: LM140H-5.0/883 _LM140H-6.0/883 LM140H-8.0/883. LM140H-12/883 LM140H-15/883 LM140H-24/883 See Package Number HOSA TL/H/7781-19 +The specifications for the LM140H/883 devices are not contained in this datasheet. If specifications for these devices are required, contact the National Semiconductor Sales Office/Distributors. 1-111 90082W1/008ZN1/0PEN1/VOPENT/0FLNT/VOPLAT