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? semiconductor components industries, llc, 2013 may, 2013 ? rev. 17 1 publication order number: ncp5661/d ncp5661, ncv5661 low output voltage, ultra-fast 1.0 a low dropout linear regulator with enable the ncp5661/ncv5661 is a high performance, low dropout linear regulator designed for high power applications that require up to 1.0 a current. it is of fered in both fixed and adjustable output versions. with output voltages as low as 0.9 v and ultra ? fast response times for load transients, the ncp5661/ncv5661 also provides additional features such as enable and error flag (for the fixed output version), increasing the utility of these devices. a thermally robust, 5 pin dpak or dfn 3x3.3 mm, combined with an architecture that offers low ground current (independent of load), provides for a superior high ? current ldo solution. features ? ultra ? fast transient response (settling t ime: 1 ? 3 s) ? low noise without bypass capacitor (26 v rms) ? low ground current independent of load (3.0 ma maximum) ? fixed/adjustable output voltage versions ? enable function ? error flag (fixed output version) ? current limit protection ? thermal protection ? 0.9 v reference voltage for ultra ? low output operation ? power supply rejection ratio > 65 db ? ncv prefix for automotive and other applications requiring unique site and control change requirements; aec ? q100 qualified and ppap capable ? these are pb ? free devices applications ? servers ? asic power supplies ? post regulation for power supplies ? constant current source ? networking equipment ? gaming and stb modules dpak ? 5 center lead crop case 175aa 1 5 marking diagrams http://onsemi.com see detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. ordering information 5661xg alyww x = a for adjustable version b for fixed 1.2 v c for fixed 3.3 v d for fixed 1.5 v e for fixed 1.8 v f for fixed 2.5 v g for fixed 2.8 v h for fixed 3.0 v 1 dfn6 mn suffix case 506ax 661x ayww 1 v5661xg alyww v661 zzz ayww 1 ncp5661 ncv5661 ncp5661 ncv5661 a = assembly location l = wafer lot y = year ww = work week g = pb ? free = pb ? free package zzz = 12 for fixed 1.2 v 15 for fixed 1.5 v 18 for fixed 1.8 v 25 for fixed 2.5 v 28 for fixed 2.8 v 30 for fixed 3.0 v 33 for fixed 3.3 v adj for adjustable version (note: microdot may be in either location)
ncp5661, ncv5661 http://onsemi.com 2 pin function description pin adj/fixed dfn6 pin adj/fixed dpak ? 5 pin name description 1 1 enable this pin allows for on/off control of the regulator. to disable the device, connect to ground. if this function is not in use, connect to v in . 2,3 2 v in positive power supply input voltage 4, epad 3, tab ground power supply ground 5 4 v out regulated output voltage 6 5 adj (adjustable version) this pin is connected to the resistor divider network and programs the output voltage. 6 5 error flag (fixed version) an error flag is triggered when the output voltage is out of regulation excluding transi- ent signals that may occur. requires a pullup resistor 100 k . maximum ratings rating symbol value unit input voltage v in 18 v output pin voltage v out ? 0.3 to vin +0.3 v adjust pin voltage v adj ? 0.3 to vin +0.3 v enable pin voltage v en ? 0.3 to vin +0.3 v error flag voltage v ef ? 0.3 to vin +0.3 v error flag current i ef 3.0 ma thermal characteristics, dpak ? 5 (note 1) thermal resistance, junction ? to ? air thermal resistance, junction ? to ? case r ? ja r ? jc 100 8.0 ? c/w thermal characteristics, dfn6 (note 2) thermal resistance, junction ? to ? air thermal resistance, junction ? to ? lead (note 3) r ? ja r ? jl 82 18 ? c/w operating junction temperature range t j ? 40 to +150 ? c storage temperature range t stg ? 55 to +150 ? c 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. note: this device series contains esd protection and exceeds the following tests: human body model (hbm) jesd 22 ? a114 ? b machine model (mm) jesd 22 ? a115 ? a. the maximum package power dissipation is: p d t j(max) t a r ja the bipolar process employed for this ic is fully characterized and rated for reliable 18 v v ccmax operation. to avoid damaging the part or degrading it?s reliability, power dissipation transients should be limited to under 20 w for dpak. for open ? circuit to short ? circuit transient, p dtransient = v ccmax * i sc . 1. 1 oz copper, 0.26 in 2 copper area (minimum pad) 2. 1 oz copper, 1 in 2 copper area 3. lead 2
ncp5661, ncv5661 http://onsemi.com 3 electrical characteristics (v in ? v out = 1.5 v, for typical values t j = 25 ? c, for min/max values t j = ? 40 ? c to 125 ? c, c in = c out = 150 f unless otherwise noted.) characteristic symbol min typ max unit adjustable output version input voltage v in 2.0 ? 9.0 v output noise voltage (f = 10 hz to 100 khz) v n ? 26 ? v rms output voltage accuracy t j = 25 ? c (i out = 10 ma to 1.0 a) t j = ? 20 to +125 ? c (i out = 10 ma to 1.0 a) t j = ? 40 to +150 ? c (i out = 10 ma to 1.0 a) v out ? 1% ? 1.5% ? 2% ? 0.9 ? +1% +1.5% +2% v adjustable pin input current i adj ? 40 ? na line regulation (i out = 10 ma, v out +1.5 v < v in < 7.0 v) reg line ? 0.03 ? % load regulation (10 ma < i out < 1.0 a) reg load ? 0.03 ? % dropout voltage (i out = 1.0 a) v do ? 1.0 1.3 v peak output current limit i out 1.0 ? ? a internal current limitation i lim ? 1.5 ? a ripple rejection (120 hz) ripple rejection (1.0 khz) rr ? ? 70 65 ? ? db thermal shutdown (guaranteed by design) t shd ? 160 ? ? c ground current i out = 1.0 a disabled state i q i qds ? ? 1.3 10 3.0 300 ma a enable input threshold voltage voltage increasing, on state, logic high voltage decreasing, off state, logic low v en 1.3 ? ? ? ? 0.3 v enable input current enable pin voltage = 0.3 v max enable pin voltage = 1.3 v min i en ? ? 0.5 0.5 ? ? a
ncp5661, ncv5661 http://onsemi.com 4 electrical characteristics (v in ? v out = 1.5 v, for typical values t j = 25 ? c, for min/max values t j = ? 40 ? c to 125 ? c, c in = c out = 150 f unless otherwise noted.) characteristic symbol min typ max unit fixed output voltage input voltage v in 2.0 ? 9.0 v output noise voltage (v out = 0.9 v) v n ? 26 ? v rms output voltage accuracy t j = 25 ? c (i out = 10 ma to 1.0 a) t j = ? 20 to +125 ? c (i out = 10 ma to 1.0 a) t j = ? 40 to +150 ? c (i out = 10 ma to 1.0 a) v out ? 1% ? 1.5% ? 2% ? v out ? +1% +1.5% +2% v line regulation (i out = 10 ma, v out +1.5 v < v in < 7.0 v) reg line ? 0.03 ? % load regulation (10 ma < i out < 1.0 a) reg load ? 0.2 ? % dropout voltage (i out = 1.0 a) v do ? 1.0 1.3 v peak output current limit i out 1.0 ? ? a internal current limitation i lim ? 1.5 ? a ripple rejection (120 hz) ripple rejection (1.0 khz) rr ? ? 70 65 ? ? db thermal shutdown (guaranteed by design) t shd ? 160 ? ? c ground current i out = 1.0 a disabled state i q i qds ? ? 1.3 30 3.0 300 ma a enable input threshold voltage voltage increasing, on state, logic high voltage decreasing, off state, logic low v en 1.3 ? ? ? ? 0.3 v enable input current enable pin voltage = 0.3 v max enable pin voltage = 1.3 v min i en ? ? 0.5 0.5 ? ? a error flag (fixed output) 1.2 v output 1.5 v output 1.8 v output 2.5 v output 2.8 v output 3.0 v output 3.3 v output v eflt 88 88 88 88 88 88 90 92 92 92 92 92 92 94 97 97 97 97 97 97 97 % of v out error flag output low voltage saturation (i ef = 1.0 ma) v efdo ? 200 ? mv error flag leakage i efleak ? 1.0 ? a error flag blanking time (note 4) t ef ? 50 ? s 4. error flag blanking time
ncp5661, ncv5661 http://onsemi.com 5 figure 1. typical schematic, adjustable output version voltage reference block v ref = 0.9 v output stage c in r1 r2 v out adj gnd in gnd figure 2. typical schematic, fixed output version enable block r3 r4 en on off voltage reference block v ref = 0.9 v output stage r1 r2 v out gnd in cc gnd enable block r3 r4 en on off rflag = 100 k error flag ef r1 r2 v out v ref 1 c c * v in c in c out v in c out *c c = 5.0 to 200 pf
ncp5661, ncv5661 http://onsemi.com 6 0.70 0.75 0.80 0.85 0.90 0.95 1.00 0.0 0.1 i out , output current (a) v do , dropout voltage (v) 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 v out = 2.5 v adjustable c in = 150 f c out = 10 to 150 f t j = 25 ? c 1.2 1.0 0.8 0.6 0.4 0.2 0 ? 40 ? 20 0 20 40 60 80 100 120 140 v do , dropout voltage (v) t j , junction temperature ( ? c) t j , junction temperature ( ? c) i gnd , ground current (ma) 0 ? 40 ? 20 0 20 40 60 80 100 120 140 3.5 3.0 2.5 2.0 1.5 1.0 0.5 t j , junction temperature ( ? c) ? 40 ? 20 0 20 40 60 80 100 120 140 2.0 1.8 1.6 1.4 1.2 1.0 i sc , short circuit limit (a) 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 v in , input voltage (v) v out , output voltage (v) 0.95 0.90 0.85 0.80 0.75 0.70 i out = 10 ma c in = 150 f c out = 1.0 to 150 f t j = 25 ? c i out , output current (a) v out , output voltage (v) v in = 3.3 v i out = 1.0 a maximum c in = 150 f c out = 1.0 to 150 f t j = 25 ? c 0.0 0.2 0.4 0.6 0.8 1.0 0.900 0.898 0.896 0.894 0.892 0.890 figure 3. dropout voltage vs. temperature figure 4. dropout voltage vs. output current figure 5. ground current vs. temperature figure 6. short circuit current limit vs. temperature figure 7. output voltage vs. input voltage figure 8. output voltage vs. output load current
ncp5661, ncv5661 http://onsemi.com 7 20 16 10 2 0 figure 9. output current vs. input ? output voltage differential figure 10. ripple rejection vs. frequency 100 90 80 70 60 50 40 30 20 10 0 noise density (nv rms / hz ) v in = 3.3 v v out = 0.9 v i out = 10 ma c in = 150 f c out = 150 f t j = 25 ? c f, frequency (khz) start: 100 hz stop: 100 khz 100 90 80 70 60 50 40 30 20 10 0 noise density (nv rms / hz ) v in = 3.3 v v out = 0.9 v i out = 1.0 a c in = 150 f c out = 150 f t j = 25 ? c f, frequency (khz) start: 100 hz stop: 100 khz figure 11. noise density vs. frequency output current (a) input ? output voltage differential (v) 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 t a = 25 ? c l = 25 mm copper figure 12. noise density vs. frequency 100 0 100 10 1 0 rr, ripple rejection (db) f, frequency (khz) 90 80 70 60 50 40 30 20 10 0 v in = 4.0 v v out = 0.9 v c in = 0 f c out = 1.0 f t j = 25 ? c i out = 10 ma i out = 1.0 a 14 12 468 1000 100 10 1.0 0.10 0.01 esr ( ) unstable output current (ma) 100 1000 figure 13. 1.2 volt output stability with output capacitor esr figure 14. 3.3 volt output stability with output capacitor esr 0 200 300 400 500 600 700 800 900 150 f stable 10 f 100 f 1000 100 10 1.0 0.10 0.01 esr ( ) unstable output current (ma) 100 1000 0 200 300 400 500 600 700 800 900 stable 150 f 10 f 100 f
ncp5661, ncv5661 http://onsemi.com 8 v in = 4.0 v v out = 0.9 v c in = 150 f c out = 150 f t j = 25 ? c i out = 10 ma to 1.0 a i out 0.5 a/div v out 10 mv/div time (1.0 s/div) i out 0.5 a/div v out 10 mv/div time (1.0 s/div) v in = 4.0 v v out = 0.9 v c in = 150 f c out = 150 f t j = 25 ? c i out = 1.0 a to 10 ma figure 15. load transient response figure 16. load transient response application information the ncp5661 is a high performance low dropout 1.0 a linear regulator suitable for high power applications, featuring an ultra ? fast response time and low noise without a bypass capacitor. it is offered in both fixed and adjustable output versions with voltages as low as 0.9 v. additional features, such as enable and error flag (fixed output version) increase the utility of the ncp5661. it is thermally robust and includes the safety features necessary during a fault condition, which provide for an attractive high current ldo solution for server, asic power supplies, networking equipment applications, and many others. input capacitor the recommended input capacitor value is a 150 f oscon with an equivalent series resistance (esr) of 50 m . it is especially required if the power source is located more than a few inches from the ncp5661. this capacitor will reduce device sensitivity and enhance the output transient response time. the pcb layout is very important and in order to obtain the optimal solution, the vin and gnd traces should be sufficiently wide to minimize noise and unstable operation. output capacitor proper output capacitor selection is required to maintain stability. the ncp5661 is guaranteed to be stable at an output capacitance of, c out > 10 f with an esr between 50 m and 300 m over the output current range of 10 ma to 1.0 a. for pcb layout considerations, place the recommended ceramic capacitor close to the output pin and keep the leads short. this should help ensure ultra ? fast transient response times. adjustable output operation the application circuit for the adjustable output version is shown in figure 1. the reference voltage is 0.9 v and the adjustable pin current is typically 40 na. a resistor divider network, r1 and r2, is calculated using the following formula: r1 r2 v out v ref 1 c in c out input output ncp5661 enable on off v in v out en adj v out = 0.9 v gnd figure 17. to achieve the minimum output voltage, adj to v out has to be connected together current limit operation as the peak output current increases beyond its limitation, the device is internally clampled to 1.5 a, thus causing the output voltage to decrease and go out of regulation. this allows the device never to exceed the maximum power dissipation. error flag operation the error flag pin on the ncp5661 will produce a logic low when it drops below the nominal output voltage. refer to the electrical characteristics for the threshold values at which point the error flag goes low. when the ncp5661 is above the nominal output voltage, the error flag will remain at logic high. the external pullup resistor needs to be connected between v in (pin 1) and the error flag pin (pin 5). a resistor of approximately 100 k is recommended to minimize the current consumption. no pullup resistor is required if the error flag output is not being used.
ncp5661, ncv5661 http://onsemi.com 9 figure 18. dfn6 thermal resistance vs. copper area copper area (mm 2 ) 700 600 500 400 300 200 100 0 390 340 290 240 190 140 90 40 ja ( ? c/w) 1 oz copper 2 oz copper figure 19. test board used for evaluation ncp5661 evaluation board
ncp5661, ncv5661 http://onsemi.com 10 ordering information device nominal output voltage package shipping ? ncp5661dtadjrkg adj (pb ? free) dpak 2500/tape & reel ncp5661dt12rkg fixed, 1.2 v (pb ? free) ncp5661dt18rkg fixed, 1.8 v (pb ? free) ncp5661dt25rkg fixed, 2.5 v (pb ? free) ncp5661dt33rkg fixed, 3.3 v (pb ? free) ncv5661dtadjrkg* adj (pb ? free) ncv5661dt12rkg* fixed, 1.2 v (pb ? free) ncv5661dt18rkg* fixed, 1.8 v (pb ? free) ncv5661dt33rkg* fixed, 3.3 v (pb ? free) NCP5661MNADJT2G adj (pb ? free) dfn6 3x3.3 mm 3000/tape & reel ncp5661mn12t2g fixed, 1.2 v (pb ? free) ncp5661mn15t2g fixed, 1.5 v (pb ? free) ncp5661mn18t2g fixed, 1.8 v (pb ? free) ncp5661mn25t2g fixed, 2.5 v (pb ? free) ncp5661mn28t2g fixed, 2.8 v (pb ? free) ncp5661mn30t2g fixed, 3.0 v (pb ? free) ncp5661mn33t2g fixed, 3.3 v (pb ? free) ncv5661mnadjt2g* adj (pb ? free) ncv5661mn12t2g* fixed, 1.2 v (pb ? free) ncv5661mn15t2g* fixed, 1.5 v (pb ? free) ncv5661mn18t2g* fixed, 1.8 v (pb ? free) ncv5661mn25t2g* fixed, 2.5 v (pb ? free) ncv5661mn28t2g* fixed, 2.8 v (pb ? free) ncv5661mn30t2g* fixed, 3.0 v (pb ? free) ncv5661mn33t2g* fixed, 3.3 v (pb ? free) note: additional fix output voltages are available upon request. ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. *ncv prefix for automotive and other applications requiring unique site and control change requirements; aec ? q100 qualified and ppap capable
ncp5661, ncv5661 http://onsemi.com 11 package dimensions dfn6 3x3.3 mm, 0.95 pitch case 506ax issue o *for additional information on our pb ? free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. soldering footprint* ??? ??? ??? ??? c 0.15 2x 2x top view d e c 0.15 notes: 1. dimensions and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. dimension b applies to plated terminal and is measured between 0.25 and 0.30 mm from terminal. 4. coplanarity applies to the exposed pad as well as the terminals. e2 bottom view b 0.10 6x l 13 0.05 c ab c d2 4x e l1 64 6x 6x (a3) c c 0.08 6x c 0.10 side view a1 a seating plane dim min nom max millimeters a 0.80 ??? 0.90 a1 0.00 ??? 0.05 a3 0.20 ref b 0.30 ??? 0.40 d 3.00 bsc d2 1.90 ??? 2.10 e 3.30 bsc e2 1.10 ??? 1.30 e 0.95 bsc k 0.20 ??? ??? l 0.40 ??? 0.60 (note 3) k l1 0.00 ??? 0.15 6x 0.83 2.15 1.35 1 0.50 0.95 pitch 3.60 dimensions: millimeters 6x
ncp5661, ncv5661 http://onsemi.com 12 package dimensions dpak ? 5 center lead crop case 175aa issue a d a k b r v s f l g 5 pl m 0.13 (0.005) t e c u j h ? t ? seating plane z dim min max min max millimeters inches a 0.235 0.245 5.97 6.22 b 0.250 0.265 6.35 6.73 c 0.086 0.094 2.19 2.38 d 0.020 0.028 0.51 0.71 e 0.018 0.023 0.46 0.58 f 0.024 0.032 0.61 0.81 g 0.180 bsc 4.56 bsc h 0.034 0.040 0.87 1.01 j 0.018 0.023 0.46 0.58 k 0.102 0.114 2.60 2.89 l 0.045 bsc 1.14 bsc r 0.170 0.190 4.32 4.83 s 0.025 0.040 0.63 1.01 u 0.020 ??? 0.51 ??? v 0.035 0.050 0.89 1.27 z 0.155 0.170 3.93 4.32 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. r1 0.185 0.210 4.70 5.33 r1 1234 5 6.4 0.252 0.8 0.031 10.6 0.417 5.8 0.228 scale 4:1 mm inches 0.34 0.013 5.36 0.217 2.2 0.086 soldering footprint* *for additional information on our pb ? free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. on semiconductor and are registered trademarks of semiconductor co mponents industries, llc (scillc). scillc owns the rights to a numb er of patents, trademarks, copyrights, trade secrets, and other intellectual property. a list ing of scillc?s product/patent coverage may be accessed at ww w.onsemi.com/site/pdf/patent ? marking.pdf. scillc reserves the right to make 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. ?typical? 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 parame ters, 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 right s of others. scillc products are not designed, intended, or a uthorized 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 whic h the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or us e scillc products for any such unintended or unauthorized appli cation, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unin tended or unauthorized use, even if such claim alleges that scil lc 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 copyrig ht laws and is not for resale in any manner. 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 ? 5817 ? 1050 ncp5661/d 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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