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ap7363 document number: ds35059 rev. 8 - 2 1 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 1.5a low quiescent curr ent, fast transient ultra-low dropout linear regulator description the ap7363 is a 1.5a adjustable output voltage linear regulator with ultra-low dropout. the device includes pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. the characteristics of low dropout voltage and fast transient response to step changes in load make it suitable for low voltage microprocessor applications. the typical quiescent current is approximately 0.5ma and changes little with load current. the built-in current-limit and thermal-shutdown functions prevent ic from damage in fault conditions. this device is available in u- dfn2030-8, so-8ep, sot223 and to252 packages. features ? 1.5a ultra-low dropout linear regulator ? ultra-low dropout: 190mv at 1.5a ? stable with 10f input/output capacitor, any types ? wide input voltage range: 2.2v to 5.5v ? adjustable output voltage: 0.6v to 5.0v ? fixed output options: 1v, 1.2v, 1.5v, 1.8v, 2.5v, 3.3v ? low ground pin current ? 25na quiescent current in shutdown mode ? v adj accuracy of 1.5% @ +25c ? v adj accuracy of 3% over line, load and temperature ? excellent load/line transient response ? current limit and thermal shutdown protection ? ambient temperature range: -40c to +85c ? u-dfn2030-8, so-8ep, sot223 and to252: available in ?green? molding compound (no br, sb) ? totally lead-free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. ?green? device (note 3) applications ? asic power supplies in printers, graphics cards, dvd players, stbs, routers, etc ? fpga and dsp core or i/o power supplies ? smps regulator ? conversion from 3.3v or 5v rail pin assignments notes: 1. no purposely added lead. fully eu directiv e 2002/95/ec (rohs) & 2011/6 5/eu (rohs 2) compliant. 2. see http://www.diodes.com for more in formation about diodes incorpor ated?s definitions of halogen- and antimony-free, "gree n" and lead-free. 3. halogen- and antimony-free "green? products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. out outout adj/ nc in in gnd 32 14 67 85 u-dfn2030-8 (top view) in (top view) gnd in in adj/nc out out out 4 3 2 1 5 6 7 8 so-8ep in (top view) sot223 (fixed output) out gnd (tab) in 3 2 1 (top view) to252 gnd 3 2 1
ap7363 document number: ds35059 rev. 8 - 2 2 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 typical applications circuit ? k10rwhere r r 1vv 2 2 1 ref out d ? ? 1 ? pin descriptions pin name pin number function sot223 to252 u-dfn2030-8 so-8ep gnd 2 1 ground. in 1 2, 3, 4 voltage input pin. out 3 5, 6, 7 voltage output pin. adj na 8 output feedback pin for adjustable version only ? a resistor divider from this pin to the out pin and ground sets the output voltage. nc na 8 no connection for fixed output version. ep/tab ? ? the exposed pad (ep) is used to remove heat from the package and it is recommended that it is connected to a copper area. the die is el ectrically connected to the exposed pad. it is recommended to connect it externally to gnd, but should not be the only ground connection. functional block diagram in en gnd out gate driver 0.605v current limit and thermal shutdown fixed version r r in en gnd adj out gate driver 0.605v current limit and thermal shutdown adjustable version v in v out out in ap7363 gnd fixed output 10f 10f v in v out out in ap7363 gnd adjustable output 10f 10f adj r2 r1
ap7363 document number: ds35059 rev. 8 - 2 3 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 absolute maximum ratings (cont.) (@t a = +25c, unless otherwise specified.) symbol parameter ratings unit esd hbm human body model esd protection 2000 v esd mm machine model esd protection 200 v v in input voltage -0.3 to +6.0 v v out out voltage -0.3 to v in +0.3 v i out continuous load current internal limited t st storage temperature range -65 to +150 c t j maximum junction temperature 150 c recommended operating conditions (@t a = +25c, unless otherwise specified.) symbol parameter min max unit v in input voltage 2.2 5.5 v i out output current 0 1.5 a t a operating ambient temperature -40 +85 c t j operating junction temperature (note 5) -40 +125 c notes: 4. stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated are not implied. exposure to ab solute-maximum rated conditions for extended periods may affect device reliability. 5. operating junction temperature must be evaluated and derated as needed, based on ambient temperature (t a ), power dissipation (p d ), maximum allowable operating junction temperature (t j-max ), and package thermal resistance ( ja ).
ap7363 document number: ds35059 rev. 8 - 2 4 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 electrical characteristics (@t a = +25c, v in = 3.3v, i out = 10ma, c in = 10f, c out = 10f, unless otherwise specified.) minimum and maximum limits are guaranteed through test, design, or st atistical correlation. typical values represent the most l ikely parametric norm at t a = +25c, and are provided for reference purposes only. symbol parameter test conditions min typ max unit v adj adj pin voltage v in = v in-min to v in-max , i out = 10ma to 1.5a t a = +25c 0.584 0.605 0.626 v over temp 0.575 0.635 i adj adj pin bias current v in = v in-min to v in-max t a = +25c 50 na over temp 750 v dropout dropout voltage (note 6) i out = 1.5a, v out = 2.5v t a = +25c 190 240 mv over temp 280 v out / v in line regulation (note 7) v in = v in-min to v in-max t a = +25c ? 0.04 ? %/v over temp 0.05 v out / i out load regulation (note 7) i out = 10ma to 1.5a t a = +25c ? 0.18 ? %/a over temp 0.33 i gnd ground pin current in normal operation mode i out = 10ma to 1.5a t a = +25c 1.0 1.2 ma over temp 1.3 i out-pk peak output current v out v out - nom -5% 3.6 a i sc short circuit current out grounded t a = +25c 3.7 a over temp 2 t d(off) turn-off delay from v en < v il to v out = off, i out = 1.5a 25 s t d(on) turn-on delay from v en > v ih to v out = on, i out = 1.5a 25 s psrr ripple rejection v in = 3.0v, i out = 1.5a, f = 120hz 65 db v in = 3.0v, i out = 1.5a, f = 1khz 61 n(l/f) output noise density f = 120hz, c out = 10 f ceramic 1.0 v/ hz e n output noise voltage bw = 100hz ? 100khz, c out = 10 f ceramic 100 v(rms) t shdn thermal shutdown threshold t j rising 170 c t hys thermal shutdown hysteresis t j falling from t shdn 10 ja thermal resistance junction-to- ambient u-dfn2030-8 (note 8) 174.0 o c/w so-8ep (note 8) 52.8 sot223 (note 8) 105.7 to252 (note 8) 87.8 jc thermal resistance junction-to-case u-dfn2030-8 (note 8) 28.2 o c/w so-8ep (note 8) 10.0 sot223 (note 8) 18.5 to252 (note8) 17.3 notes: 6. dropout voltage is the minimum voltage difference between the input and the output at which the output voltage drops 2% below its nominal value. for any output voltage less than 2.5v, the minimum v in operating voltage is the limiting factor. 7. the line and load regulation specification contains only the typical number. however, the limits for line and load regu lation are included in the adjust voltage tolerance specification. 8. device mounted on 2? x 2? fr-4 substrat e pcb, 2oz copper with minimum recommended pad layout.
ap7363 document number: ds35059 rev. 8 - 2 5 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 typical performance characteristics (@t j = +25c, v in = 2.7v, c in = 10f, c out = 10f, i out = 10ma, v out = 1.8v.) 100 1000 10k 100k frequency (hz) noise density 10 100 1k 10k noise (nv/ hz) c = 10f cer out 100 1000 10k 100k frequency (hz) noise density 10 100 1k 10 k noise (nv/ hz) c = 10f out i (a) i vs. load current load gnd 0 i (ma) gnd 0.5 1 1.5 0 0.5 1 1.5 2 2.5 3 v (v) turn-on characteristics in 0123 v (v ) out 0 1 2 125c 25c -40c temperature (c) v vs. temperature adj -50 -25 75 125 02550 100 v (v) adj 0.590 0.595 0.600 0.605 0.610 0.61 5 load current (a) dropout voltage vs. load current 00 . 5 11 . 5 d r o p o u t v o l t a g e (v) 0 0.1 0.2 0.3 125c 25c -40c
ap7363 document number: ds35059 rev. 8 - 2 6 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 typical performance characteristics (cont.) (@t j = +25c, v in = 2.7v, c in = 10f, c out = 10f, i out = 10ma, v out = 1.8v.) turn-on time time (10 s/div) turn-on time time (10 s/div) load transient response time (40 s/div) 90 frequency (khz) psrr 100 1k 10k 100k 1m v = 3.3v v = 1.8v i c = 1f cer in out out out in = 1a c = 1f cer rejection ratio (db) 80 70 60 30 20 10 0 50 40 v out = 1.8v (50mv/div) i load = 100ma to 1.5a (1a/div) v in = 3.3v c out =10 f cer v out = 1.2v (500mv/div) i l = 1.5a, c out = 10 f cer v in = 3.0v ( 2v/div ) v out = 1.2v (500mv/div) i l = 0a, c out = 10 f cer v in = 3.0v ( 2v/div )
ap7363 document number: ds35059 rev. 8 - 2 7 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 application note input capacitor a minimum 2.2 f ceramic capacitor is recommended between in and gnd pins to decouple input power supply glitch and noise. the amount of the capacitance may be increased without limit. larger input capacitor like 10 f will provide better load transient response. this input capacitor must be located as close as possible to the device to assure input stability and reduce noise. for pcb layout, a wide copper trace is required for both in and gnd pins. a lower esr capacitor type allows the use of less capacitance, while higher esr type requires more capaci tance. output capacitor the output capacitor is required to stabilize and help the transi ent response of the ldo. the ap7363 is stable with any type of capacitor, with no limitations on minimum or maximum esr. the device is designed to have exce llent transient response for most applications with a small amount of output capacitance. the device is also stable with multiple capacitors in parallel, which can be of any type of value. addit ional capacitance helps to reduce undershoot and overshoot duri ng transient loads. this capacitor should be placed as close as possible to out an d gnd pins for optimum performance. adjustable operation the ap7363 provides output voltage from 0.6v to 5.0v through external resistor divider as shown below. the output voltage is calculated by: ? ? ? ? ? ? ? ? + = 2 r 1 r 1 ref v out v where v ref = 0.6v (the internal reference voltage) rearranging the equation will give the following that is used for adjusting the output to a particular voltage: ? ? ? ? ? ? ? ? ? = 1 ref v out v 2 r 1 r to maintain the stability of the internal reference voltage, r 2 need to be kept smaller than 10k . no load stability other than external resistor divider, no minimum load is required to keep the devic e stable. the device will remain stable and regulated in no load condition.
ap7363 document number: ds35059 rev. 8 - 2 8 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 application note (cont.) stability and phase margin any regulator which operates using a feedback loop must be compens ated in such a way as to ensure adequate phase margin, which is defined as the difference between the phase shift and -180 degrees at th e frequency where the loop gain crosses unity (0 db). for most ldo regulators, the esr of the output capacitor is required to create a ze ro to add enough phase lead to ensure stable operation. the ap7363 ha s a internal compensation circuit which maintains phase margin regardless of the esr of the output capacitor, any type of capacitos can be u sed. the two charts on the next page show the gain/phase plot of the ap7363 with an output of 1.2v, 10 f ceramic output capacitor, delivering 1.5a load current and no load. it can be seen the phase margin is about 90 (which is very stable) . short circuit protection when output current at out pin is higher than current limit th reshold, the current limit pr otection will be triggered and clamp the output current to prevent over-current and to protect the regulator from damage due to overheating. thermal shutdown protection thermal protection disables the output when the junction temperature rises to approximately +170c, allowing the device to cool down. when the junction temperature reduces to approximately +160c the outpu t circuitry is enabled again. d epending on power dissipation, the rmal resistance, and ambient temperature, the thermal protection circuit may cycl e on and off. this cycling limits the heat dissipation of the r egulator, protecting it from damage due to overheating. low quiescent current the ap7363, consuming only around 0.5ma for all input range, prov ides great power saving in portable and low power applications . output noise this is the integrated value of the output noise over a s pecified frequency range. input voltage and output load current are ke pt constant during the measurement. results are expressed in vrms or v hz. the ap7363 is a low noise regulator and needs no external noise reduction capacitor. output voltage noise is typically 100 vrms overall noise level between 100 hz and 100 khz. noise is specified in two ways: output noise density is the rms sum of all noise sources, measured at the regul ator output, at a specific frequency (measured with a 1hz bandwidth). this type of noise is usually plo tted on a curve as a function of frequency. output noise voltage is the rms sum of spot noise over a specif ied bandwidth. spot noise is measured in units v/ hz or nv/ hz and total output noise is measured in v(rms). the primary source of noise in low-dr opout regulators is the internal reference. -120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120 frequency(hz) gain-bandwidth plot for 1.5a load 140 100 120 100 80 60 40 20 0 -20 -40 -60 -80 phase margin () 1k 10k 100k 1m phase v = 2.7v v = 1.2v i = 1.5a c = 10f cer in out l out gain l o o p g ain (db) -120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120 l o o p g ai n (db) 140 120 100 80 60 40 20 0 -20 -40 -60 -80 phase margin () frequency(hz) gain-bandwidth plot for no load 100 1k 10k 100k 1m v = 2.7v v = 1.2v i = 0a c = 10f cer in out l out phase gain
ap7363 document number: ds35059 rev. 8 - 2 9 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 application note (cont.) power dissipation the device power dissipation and proper sizing of the thermal plane that is connected to the thermal pad is critical to avoid t hermal shutdown and ensure reliable operation. power dissipat ion of the device depends on input voltage and load conditions and can be calculated b y: p d = (v in - v out ) x i out the maximum power dissipation, handled by the device, depends on the junction to ambient thermal resistance, and maximum ambien t temperature, which can be calculated by the equation in the following: ja r ) a t-c150( p max_d + = ordering information part number package code packaging (note 9) 7?/13? tape and reel quantity part number suffix ap7363-xxha-7 ha u-dfn2030-8 3000/tape & reel -7 ap7363-xxsp-13 sp so-8ep 2500/tape & reel -13 ap7363-xxe-13 e sot223-3l 2500/tape & reel -13 ap7363-xxd-13 d to252-3l 2500/tape & reel -13 note: 9. to252 and sot223 are only available with fixed output version. marking information (1) u-dfn2030-8 device package identification code ap7363adj u-dfn2030-8 sa ap7363-10 u-dfn2030-8 sb ap7363-12 u-dfn2030-8 sc ap7363-15 u-dfn2030-8 sd ap7363-18 u-dfn2030-8 se ap7363-25 u-dfn2030-8 sf ap7363-33 u-dfn2030-8 sg
ap7363 document number: ds35059 rev. 8 - 2 10 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 marking information (cont.) (2) so-8ep (3) sot223 (4) to252
ap7363 document number: ds35059 rev. 8 - 2 11 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 package outline dimensions (all dimensions in mm.) please see ap02002 at http://www.diodes.com /datasheets/ap02002.pdf for latest version. (1) u-dfn2030-8 (2) so-8ep u-dfn2030-8 dim min max typ a 0.57 0.63 0.60 a1 0 0.05 0.02 a3 - - 0.15 b 0.20 0.30 0.25 d 1.95 2.05 2.00 d2 1.40 1.60 1.50 e - - 0.50 e 2.95 3.05 3.00 e2 1.50 1.70 1.60 l 0.35 0.45 0.40 z - - 0.125 all dimensions in mm so-8ep (sop-8l-ep) dim min max typ a 1.40 1.50 1.45 a1 0.00 0.13 - b 0.30 0.50 0.40 c 0.15 0.25 0.20 d 4.85 4.95 4.90 e 3.80 3.90 3.85 e0 3.85 3.95 3.90 e1 5.90 6.10 6.00 e - - 1.27 f 2.75 3.35 3.05 h 2.11 2.71 2.41 l 0.62 0.82 0.72 n - - 0.35 q 0.60 0.70 0.65 all dimensions in mm d e e b l a a1 a3 (pin #1 id) seating plane e2 z d2 c'0.25*45 gauge plane seating plane e1 e n e b a 45 e0 h f exposed pad bottom view l q c 7 4 3 9 (all sides) a1 d 14 85
ap7363 document number: ds35059 rev. 8 - 2 12 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 package outline dimensions (cont.) (all dimensions in mm.) please see ap02002 at http://www.diodes.com /datasheets/ap02002.pdf for latest version. (3) sot223 (4) to252 sot223 dim min max typ a 1.55 1.65 1.60 a1 0.010 0.15 0.05 b1 2.90 3.10 3.00 b2 0.60 0.80 0.70 c 0.20 0.30 0.25 d 6.45 6.55 6.50 e 3.45 3.55 3.50 e1 6.90 7.10 7.00 e ? ? 4.60 e1 ? ? 2.30 l 0.85 1.05 0.95 q 0.84 0.94 0.89 all dimensions in mm to252 dim min max typ a 2.19 2.39 2.29 a1 0.00 0.13 0.08 a2 0.97 1.17 1.07 b 0.64 0.88 0.783 b2 0.76 1.14 0.95 b3 5.21 5.46 5.33 c2 0.45 0.58 0.531 d 6.00 6.20 6.10 d1 5.21 ? ? e ? ? 2.286 e 6.45 6.70 6.58 e1 4.32 ? ? h 9.40 10.41 9.91 l 1.40 1.78 1.59 l3 0.88 1.27 1.08 l4 0.64 1.02 0.83 a 0 10 ? all dimensions in mm a1 a b3 e 2x b2 d l4 a c2 e a1 l l3 3x b a h a2 e1
ap7363 document number: ds35059 rev. 8 - 2 13 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 suggested pad layout please see ap02001 at http://www.diodes.com/dat asheets/ap02001.pdf for the latest version. (1) u-dfn2030-8 (2) so-8ep (3) sot223 (4) to252 dimensions value (in mm) c 0.500 g 0.250 x 0.350 x1 1.500 x2 1.850 y 0.600 y1 1.600 y2 3.300 dimensions value (in mm) c 1.270 x 0.802 x1 3.502 x2 4.612 y 1.505 y1 2.613 y2 6.500 dimensions value (in mm) x1 3.3 x2 1.2 y1 1.6 y2 1.6 c1 6.4 c2 2.3 dimensions value (in mm) z 11.6 x1 1.5 x2 7.0 y1 2.5 y2 7.0 c 6.9 e1 2.3 x2 y2 y x y1 g x1 pin1 c x2 c1 c2 x1 y2 y1 x2 c z x1 y1 e1 y2 c y1 x1 x y y2 x2
ap7363 document number: ds35059 rev. 8 - 2 14 of 14 www.diodes.com december 2012 ? diodes incorporated a p7363 important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries rese rve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to this document and any product descri bed herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or user of this document or products described herein in such applica tions shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes inco rporated products for any unintended or una uthorized application, customers shall i ndemnify and hold diodes incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death a ssociated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more united states, international or foreign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of t his document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical com ponents in life support devices or systems without the express written approval of the chief executive offi cer of diodes incorporated. as used herein: a. life support devices or syst ems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when proper ly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support devic e or system whose failure to perform can be reasonably expect ed to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifi cations of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-rel ated requirements concerning the ir products and any use of diodes incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporate d and its representatives against any damages arisi ng out of the use of diodes incorporated pr oducts in such safety-critical, life suppor t devices or systems. copyright ? 2012, diodes incorporated www.diodes.com

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