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? semiconductor components industries, llc, 2010 june, 2010 ? rev. 1 1 publication order number: ncp7800/d ncp7800 1.0 a positive voltage regulators the ncp7800 series consists of 3 pin, fixed output, positive linear voltage regulators, suitable for a wide variety of applications. these regulators are extremely rugged, incorporating internal current limiting, thermal shutdown and safe-area compensation. with adequate heat sinking they can deliver output currents in excess of 1.0 a. designed as direct replacements for the popular mc7800 family, these products offer enhanced esd protection. features ? output current in excess of 1.0 a ? no external components required ? internal thermal overload protection ? internal short circuit current limiting ? output transistor safe ? area compensation ? output voltage offered in 4% tolerance ? available in standard 3 ? lead transistor packages ? for tighter tolerances and extended operating range refer to mc7800 ? enhanced esd tolerance: hbm 4 kv (5 v and 8 v options), 3 kv (12 v and 15 v options), and mm 400 v ? these are pb ? free devices figure 1. application schematic a common ground is required between the input and the output voltages. the input voltage must remain typically 2.0 v above the output voltage even during the low point on the input ripple voltage. xx ncp78xx input c in * 0.33 f c o ** output these two digits of the type number indicate nominal voltage. c in is required if regulator is located an appreciable distance from power supply filter. c o is not needed for stability; however, it does improve transient response. values of less than 0.1 f could cause instability. * ** to ? 220 ? 3 t suffix case 221ab 1 2 see detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. ordering information heatsink surface connected to pin 2 pin 1. input 2. ground 3. output 3 http://onsemi.com 78xxt awlywwg xx = 05, 08, 12 or 15 a = assembly location wl, l = wafer lot y = year ww = work week g = pb ? free device marking diagram pin connections
ncp7800 http://onsemi.com 2 figure 2. simplified block diagram table 1. pin function description pin no. pin name description 1 v in positive power supply input. 2 gnd power supply ground; device substrate. 3 v out regulated output voltage.
ncp7800 http://onsemi.com 3 table 2. absolute maximum ratings (note 1) rating symbol value unit input voltage range (for v out : 5.0 ? 15 v) v in ? 0.3 to 35 v power dissipation p d internally limited w maximum junction temperature t j(max) 150 c storage temperature range t stg ? 65 to +150 c esd capability, human body model (note 2) ncp7805, ncp7808 ncp7812, ncp7815 esd hbm 4 3 kv esd capability, machine model (note 2) esd mm 400 v stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. 1. refer to electrical characteristics and application information for safe operating area. 2. this device series incorporates esd protection and is tested by the following methods: esd human body model tested per eia/jesd22 ? a114 esd machine model tested per eia/jesd22 ? a115 latchup current maximum rating: 150 ma per jedec standard: jesd78 table 3. thermal characteristics rating symbol value unit thermal characteristics, to ? 220 ? 3 (note 3) thermal resistance, junction ? to ? case thermal resistance, junction ? to ? air (note 4) r jc r ja 7.5 65 c/w 3. refer to electrical characteristics and application information for safe operating area. 4. value based on thermal measurement in a test socket. table 4. operating ranges (note 5) rating symbol min max unit input voltage (note 6) (for v out : 5.0 ? 15 v) v in 7.0 35 v junction temperature t j 0 125 c 5. refer to electrical characteristics and application information for safe operating area. 6. minimum v in = 7.0 v or (v out + v do ), whichever is higher.
ncp7800 http://onsemi.com 4 table 5. electrical characteristics (v in = 10 v, i o = 500 ma, t j = 0 c to 125 c, unless otherwise noted) (note 7) characteristic symbol ncp7805 unit min typ max output voltage (t j = 25 c) v o 4.8 5.0 5.2 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 7.0 vdc v in 20 vdc v o 4.75 5.0 5.25 vdc line regulation (t j = 25 c) 7.5 vdc v in 20 vdc 8.0 vdc v in 12 vdc reg line ? ? 1.1 0.6 100 50 mv load regulation (t j = 25 c) 5.0 ma i o 1.0 a 5.0 ma i o 1.5 a reg load ? ? 1.5 2.9 50 100 mv quiescent current (t j = 25 c) i b ? 3.0 8 ma quiescent current change 7.0 vdc v in 25 vdc 5.0 ma i o 1.0 a i b ? ? 0.28 0.07 1.3 0.5 ma ripple rejection (note 8) 8.0 vdc v in 18 vdc, f = 120 hz rr 62 75 ? db dropout voltage (i o = 1.0 a, t j = 25 c) (note 8) v i ? v o ? 2.0 ? vdc output noise voltage (t j = 25 c) (note 8) 10 hz f 100 khz v n ? 6.8 ? v/v o output resistance f = 1.0 khz (note 8) r o ? 2.2 ? m short circuit current limit (t j = 25 c) (note 8) v in = 35 vdc i sc ? 0.3 ? a peak output current (t j = 25 c) (note 8) i max ? 2.4 ? a average temperature coefficient of output voltage (note 8) tcv o ? 0.13 ? mv/ c 7. performance guaranteed over the indicated operating temperature range by design and/or characterization, production tested at t j = t a = 25 c. low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible . 8. value based on design and/or characterization.
ncp7800 http://onsemi.com 5 table 6. electrical characteristics (v in = 14 v, i o = 500 ma, t j = 0 c to 125 c, unless otherwise noted) (note 9) characteristic symbol ncp7808 unit min typ max output voltage (t j = 25 c) v o 7.68 8.0 8.32 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 10.5 vdc v in 23 vdc v o 7.60 8.0 8.40 vdc line regulation (t j = 25 c) 10.5 vdc v in 25 vdc 11.0 vdc v in 17 vdc reg line ? ? 1.8 1.0 160 80 mv load regulation (t j = 25 c) 5.0 ma i o 1.5 a reg load ? 3.7 160 mv quiescent current (t j = 25 c) i b ? 3.0 8.0 ma quiescent current change 10.5 vdc v in 25 vdc 5.0 ma i o 1.0 a i b ? ? ? ? 1.0 0.5 ma ripple rejection (note 10) 11.5 vdc v in 21.5 vdc, f = 120 hz rr 56 72 ? db dropout voltage (i o = 1.0 a, t j = 25 c) (note 10) v i ? v o ? 2.0 ? vdc output noise voltage (t j = 25 c) (note 10) 10 hz f 100 khz v n ? 6.8 ? v/v o output resistance f = 1.0 khz (note 10) r o ? 2.7 ? m short circuit current limit (t j = 25 c) (note 10) v in = 35 vdc i sc ? 0.3 ? a peak output current (t j = 25 c) (note 10) i max ? 2.4 ? a average temperature coefficient of output voltage (note 10) tcv o ? 0.24 ? mv/ c 9. performance guaranteed over the indicated operating temperature range by design and/or characterization, production tested at t j = t a = 25 c. low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible . 10. value based on design and/or characterization.
ncp7800 http://onsemi.com 6 table 7. electrical characteristics (v in = 19 v, i o = 500 ma, t j = 0 c to 125 c, unless otherwise noted) (note 11) characteristic symbol ncp7812 unit min typ max output voltage (t j = 25 c) v o 11.52 12 12.48 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 14.5 vdc v in 27 vdc v o 11.40 12 12.60 vdc line regulation (t j = 25 c) 14.5 vdc v in 30 vdc 16 vdc v in 22 vdc reg line ? ? 2.7 1.4 240 120 mv load regulation (t j = 25 c) 5.0 ma i o 1.5 a reg load ? 5.5 240 mv quiescent current (t j = 25 c) i b ? 3.0 8.0 ma quiescent current change 14.5 vdc v in 30 vdc 5.0 ma i o 1.0 a i b ? ? ? ? 1.0 0.5 ma ripple rejection (note 12) 15 vdc v in 25 vdc, f = 120 hz rr 55 71 ? db dropout voltage (i o = 1.0 a, t j = 25 c) (note 12) v i ? v o ? 2.0 ? vdc output noise voltage (t j = 25 c) (note 12) 10 hz f 100 khz v n ? 6.8 ? v/v o output resistance f = 1.0 khz (note 12) r o ? 3.6 ? m short circuit current limit (t j = 25 c) (note 12) v in = 35 vdc i sc ? 0.3 ? a peak output current (t j = 25 c) (note 12) i max ? 2.4 ? a average temperature coefficient of output voltage (note 12) tcv o ? 0.47 ? mv/ c 11. performance guaranteed over the indicated operating temperature range by design and/or characterization, production tested a t t j = t a = 25 c. low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible . 12. value based on design and/or characterization.
ncp7800 http://onsemi.com 7 table 8. electrical characteristics (v in = 23 v, i o = 500 ma, t j = 0 c to 125 c, unless otherwise noted) (note 13) characteristic symbol ncp7815 unit min typ max output voltage (t j = 25 c) v o 14.40 15 15.60 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 17.5 vdc v in 30 vdc v o 14.25 15 15.75 vdc line regulation (t j = 25 c) 17.9 vdc v in 30 vdc 20 vdc v in 26 vdc reg line ? ? 3.3 1.8 300 150 mv load regulation (t j = 25 c) 5.0 ma i o 1.5 a reg load ? 6.9 300 mv quiescent current (t j = 25 c) i b ? 3.0 8.0 ma quiescent current change 17.5 vdc v in 30 vdc 5.0 ma i o 1.0 a i b ? ? ? ? 1.0 0.5 ma ripple rejection (note 14) 18.5 vdc v in 28.5 vdc, f = 120 hz rr 54 70 ? db dropout voltage (i o = 1.0 a, t j = 25 c) (note 14) v i ? v o ? 2.0 ? vdc output noise voltage (t j = 25 c) (note 14) 10 hz f 100 khz v n ? 6.8 ? v/v o output resistance f = 1.0 khz (note 14) r o ? 4.7 ? m short circuit current limit (t j = 25 c) (note 14) v in = 35 vdc i sc ? 0.3 ? a peak output current (t j = 25 c) (note 14) i max ? 2.4 ? a average temperature coefficient of output voltage (note 14) tcv o ? 0.42 ? mv/ c 13. performance guaranteed over the indicated operating temperature range by design and/or characterization, production tested a t t j = t a = 25 c. low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible . 14. value based on design and/or characterization.
ncp7800 http://onsemi.com 8 typical characteristics figure 3. peak output current as a function of input/output differential voltage (ncp7805) figure 4. ripple rejection as a function of output voltage v in ? v out , input/output voltage differential (v) f, frequency (khz) 40 30 25 20 15 10 5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 10 1 0.1 0.01 30 40 50 60 70 80 figure 5. ripple rejection as a function of frequency (ncp7805) figure 6. output voltage as a function of junction temperature (ncp7805) t j , junction temperature ( c) t j , junction temperature ( c) 140 100 60 18 0 20 ? 20 ? 60 4.80 4.85 4.90 4.95 5.00 5.05 5.10 100 75 50 25 0 ? 25 ? 50 0 1 2 3 4 5 6 i o , output current (a) rr, ripple rejection (db) v o , output voltage (v) i b , quiescent current (ma) 35 t j = 0 c t j = 25 c t j = 125 c v in = 8.0 v to 18 v i o = 500 ma t a = 25 c 125 v in = 20 v i o = 5.0 ma v in = 10 v v o = 5.0 v i l = 20 ma figure 7. output impedance as a function of output voltage figure 8. quiescent current as a function of temperature (ncp7805) v o , output voltage (v) rr, ripple rejection (db) part # v in ncp7805= 10 v ncp7808= 14 v ncp7812= 19 v ncp7815= 23 v f = 120 hz i o = 20 ma v in = 1.0 v(rms) 20 16 14 12 10 8 6 4 50 60 70 80 90 18 24 22 v o , output voltage (v) 20 16 14 12 10 8 6 4 0.1 1 10 18 24 22 z o , output impedance (m ) f = 120 hz i o = 500 ma c l = 0 f
ncp7800 http://onsemi.com 9 applications information design considerations the ncp7800 series of fixed voltage regulators are designed with thermal overload protection that shuts down the circuit when subjected to an excessive power overload condition, internal short circuit protection that limits the maximum current the circuit will pass, and output transistor safe ? area compensation that reduces the output short circuit current as the voltage across the pass transistor is increased. in many low current applications, compensation capacitors are not required. however, it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. an input bypass capacitor should be selected to provide good high ? frequency characteristics to insure stable operation under all load conditions. a 0.33 f or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. the bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. i o 5.0v r i b figure 9. current regulator figure 10. adjustable output regulator figure 11. current boost regulator figure 12. short circuit protection the ncp7800 regulators can also be used as a current source when connected as above. in order to minimize dissipation the ncp7805 is chosen in this application. resistor r determines the current as follows: for example, a 1.0 a current source would require r to be a 5.0 , 10 w resistor and the output voltage compliance would be the input voltage less 7.0 v. i b 3.2 ma over line and load changes. input 0.33 f r i o ncp7805 constant current to grounded load the addition of an operational amplifier allows adjustment to higher or intermediate values while retaining regulation characteristics. the minimum voltage obtainable with this arrangement is 2.0 v greater than the regulator voltage. input ncp7805 output 0.33 f 10 k mc34072v 1.0 k v o = 7.0 v to 20 v v in v o + 2.0 v 0.1 f the ncp7800 series can be current boosted with a pnp transistor. the mj2955 p rovides current to 5.0 a. resistor r in conjunction with the v be of the pnp determines when the pass transistor begins conducting; this circuit is not short circuit proof. input/output dif ferential voltage minimum is increased by v be of the pass transistor. xx = 2 digits of type number indicating voltage. ncp78xx input output r 1.0 f mj2955 or equiv. 1.0 f the circuit of figure 11 can be modified to provide supply protection against short circuits by adding a short circuit sense resistor, r sc , and an additional pnp transistor. the current sensing pnp must be able to handle the short circuit current of the three-terminal regulator. therefore, a four-ampere plastic power transistor is specified. xx = 2 digits of type number indicating voltage. 1.0 f ncp78xx mj2955 or equiv. output r sc r 2n6049 or equiv. 10 f r source 0.33 f input r source 0.33 f 10 f - +
ncp7800 http://onsemi.com 10 figure 13. worst case power dissipation vs. ambient temperature (to ? 220) figure 14. input output differential as a function of junction temperature , power dissipation (w) d 20 16 12 8.0 4.0 0 -50 -25 0 25 50 75 100 125 150 t a , ambient temperature ( c) p differential (v) in out , input-output voltage 0.5 0 -75 -50 -25 0 25 50 75 100 t j , junction temperature ( c) - v v v o = 2% of v o 2.0 1.5 1.0 2.5 125 hs = 0 c/w hs = 5 c/w hs = 15 c/w no heatsink jc = 7.5 c/w ja = 65 c/w t j(max) = 150 c i o = 1.0 a i o = 500 ma i o = 200 ma i o = 20 ma i o = 0 ma protection diode the ncp7800 series has internal low impedance (about 1 ) diode path that normally does not require protection when used in the typical regulator applications. the path connects between output and input and it can withstand a peak surge current of about 5 a for a reasonable time (several milliseconds). normal cycling of vin cannot generate a current surge of this magnitude for too long time since output capacitor discharges from output to input and follows input voltage therefore the magnitude of reverse current is not so high. however, when vin is shorted or crowbarred to ground and output cap is too large and moreover if higher voltage option is used then the peak of reverse current is much higher than 5 a and lasts more than several milliseconds. in this case a damage may occur to the regulator. to protect the regulator the external bypass diode connected between output and input is recommended. the protection diode should be rated for sufficient peak current. figure 15. protection diode placement input cin ncp78xx protection diode cout output
ncp7800 http://onsemi.com 11 definitions line regulation ? the change in output voltage for a change in the input voltage. the measurement is made under conditions of low dissipation or by using pulse techniques such that the average chip temperature is not significantly affected. load regulation ? the change in output voltage for a change in load current at constant chip temperature. maximum power dissipation ? the maximum total device dissipation for which the regulator will operate within specifications. quiescent current ? that part of the input current that is not delivered to the load. output noise v oltage ? the rms ac voltage at the output, with constant load and no input ripple, measured over a specified frequency range. long term stability ? output voltage stability under accelerated life test conditions with the maximum rated voltage listed in the devices? electrical characteristics and maximum power dissipation. ordering information device nominal voltage operating temperature range package shipping ncp7805tg 5.0 v t j = 0 c to +125 c to ? 220 (pb ? free) 50 units / rail ncp7808tg 8.0 v t j = 0 c to +125 c to ? 220 (pb ? free) 50 units / rail NCP7812TG 12 v t j = 0 c to +125 c to ? 220 (pb ? free) 50 units / rail ncp7815tg 15 v t j = 0 c to +125 c to ? 220 (pb ? free) 50 units / rail
ncp7800 http://onsemi.com 12 package dimensions to ? 220, single gauge t suffix case 221ab ? 01 issue o notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension z defines a zone where all body and lead irregularities are allowed. dim min max min max millimeters inches a 0.570 0.620 14.48 15.75 b 0.380 0.405 9.66 10.28 c 0.160 0.190 4.07 4.82 d 0.025 0.035 0.64 0.88 f 0.142 0.147 3.61 3.73 g 0.095 0.105 2.42 2.66 h 0.110 0.155 2.80 3.93 j 0.018 0.025 0.46 0.64 k 0.500 0.562 12.70 14.27 l 0.045 0.060 1.15 1.52 n 0.190 0.210 4.83 5.33 q 0.100 0.120 2.54 3.04 r 0.080 0.110 2.04 2.79 s 0.020 0.055 0.508 1.39 t 0.235 0.255 5.97 6.47 u 0.000 0.050 0.00 1.27 v 0.045 --- 1.15 --- z --- 0.080 --- 2.04 b q h z l v g n a k f 123 4 d seating plane ? t ? c s t u r j on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. ncp7800/d publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5773 ? 3850 literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative

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