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? semiconductor components industries, llc, 2002 july, 2002 rev. 2 1 publication order number: ncp630/d ncp630 3.0 a fast linear voltage regulators the ncp630 is a low dropout positive voltage regulator that is capable of providing a guaranteed output current of 3.0 a with a maximum dropout voltage of 1.25 v at 3.0 a over temperature. the fast turn on time allows step changes in loads commonly found in low voltage microprocessor applications. the ncp630 is currently offered as an adjustable output version that can be programmed down to 1.2 v with two external resistors and as a fixed output version at 3.47 v. on chip trimming adjusts the reference/output voltage to within 1.5% accuracy. internal protection features consist of output current limiting and thermal shutdown. ncp630 is available in d 2 pak package. features ? output current of 3.0 a ? 1.25 v maximum dropout voltage at 3.0 a over temperature ? voltage on shutdown pin is ttl compatible ? reference/output voltage trimmed to 1.5% ? current limit protection ? thermal shutdown protection ? 40 c to 125 c junction temperature range applications ? microprocessor power supplies ? dsp power supplies ? smps post regulation ? battery chargers figure 1. typical application circuit for ncp630a input v in v out ncp630a adj gnd v out @ 3 a + co 33 f r2 r1 10 k shutdown + c in 68 f r2 r1 v out 1.216 1 figure 2. typical application circuit for ncp630g input v in v out ncp630g sense gnd v out @ 3 a + co 33 f shutdown + c in 68 f d 2 pak d2t suffix case 936a 1 5 marking diagram xx awlyww tab = ground pin 1. shutdown 2. v in 3. ground 4. v out 5. adj xx = specific device code a = assembly location wl = wafer lot y = year ww = work week see detailed ordering and shipping information in the package dimensions section on page 9 of this data sheet. ordering information http://onsemi.com tab = ground pin 1. shutdown 2. v in 3. ground 4. v out 5. sense ncp630a ncp630g
ncp630 http://onsemi.com 2 maximum ratings rating symbol value unit input voltage (note 1) v in 12 v shutdown voltage shutdown 0.3 to v in + 0.3 v output voltage v out 0.3 to v in + 0.3 v output short circuit duration (note 2) infinite power dissipation and thermal characteristics case 936f (d 2 pak) power dissipation (note 2) thermal resistance, junctiontoambient thermal resistance, junctiontocase p d r ja r jc internally limited 45 5.0 w c/w c/w operating junction temperature range t j 40 to 125 c storage temperature range t stg 55 to 150 c lead soldering temperature @ 260 c t solder 10 sec 1. this device series contains esd protection and exceeds the following tests: human body model jesd 22a114b machine model jesd 22a115a 2. the maximum package power dissipation is: p d t j(max) t a r ja pin function description pin no. ncp630a ncp630g description 1 shutdown shutdown this input is used to place the ncp630 into shutdown mode. the ncp630 is active when a voltage greater than 2.0 v is applied. the ncp630 will be placed into a shutdown mode when a voltage less than 0.8 v is applied. if left unused then connect the pin high. 2 v in v in positive power supply input voltage 3, tab ground ground power supply ground 4 v out v out regulated output voltage 5 adj this pin is to be connected to the r sense resistors on the output. it main- tains 1.216 v between itself and ground. refer to figure 1 for equation. 5 sense this pin is to be connected near the load for better regulation.
ncp630 http://onsemi.com 3 electrical characteristics (c in = 68 f, c out = 33 f, v in = v out + 1.5 v, i out = 10 ma, for typical value t j = 25 c, for min and max values t j = 40 c to 125 c unless otherwise noted.) characteristic symbol min typ max unit ncp630a reference voltage (v in = v out + 1.5 v to 7.0 v, i out = 10 ma to 3.0 a, t j = 25 c) (v in = v out + 1.5 v to 7.0 v, i out = 10 ma to 3.0 a, t j = 40 c to 125 c) v adj 1.198 1.180 1.216 1.234 1.253 v line regulation (notes 3 and 4) (v in = v out + 1.5 v to 7.0 v, t j = 25 c) (v in = v out + 1.5 v to 7.0 v, t j = 40 c to 125 c) reg line 0.02 0.06 % load regulation (notes 3 and 4) (i out = 10 ma to 3.0 a, t j = 25 c) (i out = 10 ma to 3.0 a, t j = 40 c to 125 c) reg load 0.01 0.06 % dropout voltage (measured at v out 2%) (i out = 300 ma) (i out = 3.0 a) v in v out 0.75 1.0 1.0 1.25 v ground pin current in normal mode (i out = 300 ma) (i out = 3.0 a) i gnd 0.4 1.0 1.0 2.0 ma ground pin current in shutdown mode (v shutdown = 0.8 v) i gnd 15 50 a peak output limit i out 3.0 6.0 a short current limit (note 5) i sc 6.5 a thermal shutdown 165 c shutdown input threshold voltage (voltage increasing, output turns on, logic high) (voltage decreasing, output turns off, logic low) vt th(shutdown) 2.0 0.8 v turnoff delay, i out = 3.0 a t d(off) 20 s turnon delay, i out = 3.0 a t d(on) 25 s shutdown input low current (v shutdown = 0.8 v), (negative current flows out of pin) i il 10 5.0 1.0 a shutdown input high current (v shutdown = 2.0 v), (negative current flows out of pin) i ih 10 4.5 1.0 a ripple rejection (c out = 100 f, f = 1.0 khz) rr 85 db output noise density (f = 120 hz) 0.6 v hz output noise voltage (f = 20 hz 100 khz) vn 210 v rms 3. low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 4. line regulation is defined as the change in output voltage for a change in input voltage. load regulation is defined as the change i n output voltage for a change in output load current at a constant temperature. the limits for line and load regulation are contained wi thin the refer- ence voltage specification, v adj . typical numbers are included in the specification for line and load regulation. 5. the short circuit limit is for device protection. maximum output current is guaranteed to be greater or equal to 3.0 a with a 6.0 a typical as listed in the peak output limit specification.
ncp630 http://onsemi.com 4 electrical characteristics (c in = 68 f, c out = 33 f, v in = v out + 1.5 v, i out = 10 ma, for typical value t j = 25 c, for min and max values t j = 0 c to 125 c unless otherwise noted.) characteristic symbol min typ max unit ncp630g output voltage (v in = 5.0 v to 7.0 v, i out = 10 ma to 3.0 a, t j = 25 c) (v in = 5.0 v to 7.0 v, i out = 10 ma to 3.0 a, t j = 0 c to 125 c) v out 3.418 3.383 3.470 3.522 3.557 v line regulation (notes 6 and 7) (v in = 5.0 v to 7.0 v, t j = 25 c) (v in = 5.0 v to 7.0 v, t j = 0 c to 125 c) reg line 0.02 0.06 % load regulation (notes 6 and 7) (i out = 10 ma to 3.0 a, t j = 25 c) (i out = 10 ma to 3.0 a, t j = 0 c to 125 c) reg load 0.01 0.06 % dropout voltage (measured at v out 2%) (i out = 300 ma) (i out = 3.0 a) v in v out 0.75 1.0 1.0 1.25 v ground pin current in normal mode (i out = 300 ma) (i out = 3.0 a) i gnd 0.4 1.0 1.0 2.0 ma ground pin current in shutdown mode (v shutdown = 0.8 v) i gnd 26 50 a peak output limit i out 3.0 5.0 a short current limit (note 8) i sc 5.0 a thermal shutdown 165 c shutdown input threshold voltage (voltage increasing, output turns on, logic high) (voltage decreasing, output turns off, logic low) vt th(shutdown) 2.0 0.8 v turnoff delay, i out = 3.0 a t d(off) 20 s turnon delay, i out = 3.0 a t d(on) 25 s shutdown input low current (v in = 0.8 v), (negative current flows out of pin) i il 10 5.0 1.0 a shutdown input high current (v in = 2.0 v), (negative current flows out of pin) i ih 10 4.5 1.0 a ripple rejection (c out = 100 f, f = 1.0 khz) rr 85 db output noise density (f = 120 hz) 0.6 v hz output noise voltage (f = 10 hz 100 khz) vn 210 v rms 6. low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 7. line regulation is defined as the change in output voltage for a change in input voltage. load regulation is defined as the change i n output voltage for a change in output load current at a constant temperature. the limits for line and load regulation are contained within the output voltage specification, v out . typical numbers are included in the specification for line and load regulation. 8. the short circuit limit is for device protection. maximum output current is guaranteed to be greater or equal to 3.0 a with a 5.0 a typical as listed in the peak output limit specification.
ncp630 http://onsemi.com 5 typical characteristics figure 3. output voltage versus temperature figure 4. short circuit current limit versus temperature t a , ambient temperature ( c) t a , ambient temperature ( c) 100 80 60 40 20 0 20 40 3.450 3.455 3.460 3.465 3.470 3.475 3.480 100 80 60 40 20 0 20 40 0 1 2 3 4 5 6 9 figure 5. dropout voltage versus temperature figure 6. ground current versus temperature t a , temperature ( c) t a , ambient temperature ( c) 100 80 60 40 20 0 20 40 0 0.2 0.4 0.6 0.8 1 1.2 100 80 60 40 20 0 20 40 0 0.2 0.4 0.6 0.8 1 1.2 1.8 figure 7. ground pin current in shutdown mode versus temperature figure 8. startup transient t a , ambient temperature ( c) time ( s) 80 60 40 20 0 20 40 60 0 5 10 15 20 25 30 40 120 100 80 60 40 20 0 0 1 2 3 0 1 2 3 v out , output voltage (v) 120 i sc , short circuit current limit (a) 7 8 120 v in v out , dropout voltage (v) 120 i out = 3.0 a i out = 300 ma i gnd , ground current (ma) 120 1.4 1.6 i out = 3.0 a i out = 300 ma v in = v out + 1.5 v v sd = v in i gnd , ground current ( a) 140 120 100 35 v in = v out + 1.5 v v sd = 0 v v out , output voltage (v) shutdown voltage (v) 4 c out = 100 f r l = 3.5
ncp630 http://onsemi.com 6 typical characteristics figure 9. output noise density figure 10. ripple rejection f, frequency (khz) f, frequency (khz) 10 1 0.1 0.01 0 0.2 0.4 0.6 0.8 1 1.2 10 1 0.1 0.01 0 20 40 60 80 100 v n , noise voltage ( v/ hz) 100 ripple rejection (db) 120 100 v in = v out + 1.0 v c out 33 f tantalum c in = 100 f i out = 10 ma v out = 3.47 v v in = 5.0 v + 0.5 v pp c out = 100 f electrolytic i out = 10 ma
ncp630 http://onsemi.com 7 application information input capacitor the minimum capacitance required for stability is a 68 f aluminum electrolytic or tantalum capacitor. the maximum esr allowed for stability is 5.0 . the capacitor should be place as close as possible to the input of the device. the placement of a ceramic capacitor in parallel is not recommend due to possible instabilities. output capacitor a minimum output capacitor value of 33 f is required for stability. the type of capacitor can be aluminum electrolytic or tantalum capacitor. esr can vary up to a maximum of 2.0 ohms for stability. the capacitor should be placed as close as possible to the output of the device. the placement of a ceramic capacitor in parallel is not recommend due to possible instabilities. sense pin the sense pin of the ncp630g will need to be connected near the output voltage. this provides great advantages when the linear regulator can't be near the load. the sense pin will monitor the load and allow the linear regulator to adjust for losses in the line between itself and the load. thus it will provide good accuracy for a remote load. adj pin the typical application circuits for the fixed and adjustable output regulators are shown in figures 1 and 2. the adjustable devices develop and maintain the nominal 1.216 v reference voltage between the adjust and ground pins. the adjust pin current, i adj , is typically 40 na and normally lower than the current flowing through r1 and r2, thus it generates a small output voltage error that can usually be ignored. for the fixed output devices r1 and r2 are included within the device. reverse current some situations might occur were the output pin is raised to a voltage while the input pin is at zero volts. this situation will not damage the device. if the output voltage is raised to a higher voltage than the input voltage a diode is recommended from output to input with the anode connect to the output pin. thermal considerations this series contains an internal thermal limiting circuit that is designed to protect the regulator in the event that the maximum junction temperature is exceeded. when activated, typically at 165 c, the regulator output switches off and then back on as the die cools. as a result, if the device is continuously operated in an overheated condition, the output will appear to be oscillating. this feature provides protection from a catastrophic device failure due to accidental overheating. it is not intended to be used as a substitute for proper heatsinking. the maximum device power dissipation can be calculated by: p d t j(max) t a r ja the devices are available in surface mount d 2 pak package. the package has an exposed metal tab that is specifically designed to reduce the junction to air thermal resistance, r ja , by utilizing the printed circuit board copper as a heat dissipater. figure 11 shows typical r ja values that can be obtained from a square pattern using economical single sided 2.0 ounce copper board material. the final product thermal limits should be tested and quantified in order to insure acceptable performance and reliability. the actual r ja can vary considerably from the graphs shown. this will be due to any changes made in the copper aspect ratio of the final layout, adjacent heat sources, and air flow. 30 40 50 60 70 80 1.0 1.5 2.0 2.5 3.0 3.5 0102030 25 15 5.0 l, length of copper (mm) p d(max) for t a = 50 c minimum size pad 2.0 oz. copper l l ???? ???? ???? ???? free air mounted vertically p d , maximum power dissipation (w) r ja r , thermal resistance ja q junction-to-air ( c/w) figure 11. 3pin and 5pin d 2 pak thermal resistance and maximum power dissipation versus p.c.b. copper length
ncp630 http://onsemi.com 8 tape and reel specification sop description leads package length package width package thickness reel quantity tape pitch tape width vendor p/n d 2 pak 5 9.2 mm 10 mm 4.4 mm 800 16 mm 24 mm dsqpakk 11.5 0.1 see note 3 24.0 0.3 1.75 0.10 r 0.5 typ a a 16.00 4.00 see note 1 2.00 0.10 see note 3 ? 1.5 +0.10/0.0 ? 1.50 min a 0 0.30 0.05 11.60 2.10 0.60 b 0 3.90 k 0 r 0.3 max section aa a 0 = 10.60 b 0 = 16.50 k 0 = 4.90 notes: 1. 10 sprocket hole pitch cumulative tolerance 0.2 2. camber in compliance with eia 481 3. pocket position relative to sprocket hole measured as true position of pocket, not pocket hole figure 12. package carrier dimensions all dimensions in millimeters
ncp630 http://onsemi.com 9 figure 13. reel dimensions ordering information device marking nominal output voltage package shipping ncp630ad2t ncp630a adj d 2 pak 50 units/rail ncp630ad2tr4 ncp630a adj d 2 pak 800/tape & reel ncp630gd2t ncp630g 3.47 d 2 pak 50 units/rail ncp630gd2tr4 ncp630g 3.47 d 2 pak 800/tape & reel
ncp630 http://onsemi.com 10 package dimensions d 2 pak d2t suffix case 936a02 issue b 5 ref a 123 k b s h d g c e m l p n r v u terminal 6 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. tab contour optional within dimensions a and k. 4. dimensions u and v establish a minimum mounting surface for terminal 6. 5. dimensions a and b do not include mold flash or gate protrusions. mold flash and gate protrusions not to exceed 0.025 (0.635) maximum. dim a min max min max millimeters 0.386 0.403 9.804 10.236 inches b 0.356 0.368 9.042 9.347 c 0.170 0.180 4.318 4.572 d 0.026 0.036 0.660 0.914 e 0.045 0.055 1.143 1.397 g 0.067 bsc 1.702 bsc h 0.539 0.579 13.691 14.707 k 0.050 ref 1.270 ref l 0.000 0.010 0.000 0.254 m 0.088 0.102 2.235 2.591 n 0.018 0.026 0.457 0.660 p 0.058 0.078 1.473 1.981 r 5 ref s 0.116 ref 2.946 ref u 0.200 min 5.080 min v 0.250 min 6.350 min 45 m 0.010 (0.254) t t optional chamfer
ncp630 http://onsemi.com 11 notes
ncp630 http://onsemi.com 12 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 any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso 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 indem nify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and re asonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized u se, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employ er. publication ordering information japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1410031 phone : 81357402700 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. ncp630/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com n. american technical support : 8002829855 toll free usa/canada

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