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mpq20051 - aec1 low noise, h igh psrr, 1 a linear regulat or aec - q100 qualified mpq20051 rev. 1.0 w ww.monolithicpower.com 1 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. description the mpq20051 is a low - dropout linear regulator that supplies up to 1a current with a 14 0mv dropout voltage. the externally - adjustable output voltage has a range of 0.8v to 5v from an input voltage of 2.5v to 5.5v. an internal pmos pass element allow s for a low 130 a ground current, making the mpq20051 suitable for battery - power ed devices. other features include low - power shutdown, and short - circuit and thermal protection. the mpq20051 is available in 3mm x 3mm 8 - pin qfn package. features ? guaranteed industrial/aut omotive temp range limits ? up to 1a output current ? low 14 0mv dropout at 1a ? low 130 a ground current ? output voltage available from 0.8v to 5v ? low noise: 13 v rms typical (10 hz to 100khz) ? 63db psrr @1khz ? stable with ceramic capacitor ? excellent load/line tran sient response ? current limiting and thermal protection ? available in 3mm x 3mm 8 - pin qfn package ? available in aec - q100 qualified grade 1 applications ? automotive/industrial power system ? notebook computers ? cordless telephones ? cellular phones ? wireless c ommun ication e quipment s all mps parts are lead - free and adhere to the rohs directive. for mps green status, please visit mps website under quality assurance. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, i nc . typical application
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 2 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. ordering information part number package top marking mpq20051dq - aec1 * qfn8(3x3mm) abr mpq20051dq ** qfn8(3x3mm) * for tape & reel, add suffix - z (e.g. mpq20051dq - aec1 - z) f or rohs compliant packaging, add suffix ? lf (e.g. mpq20051dq - aec1 - lf - z). ** for tape & reel, add suffix - z (e.g. mpq20051dq - z) f or rohs compliant packaging, add suffix ? lf (e.g. mpq20051dq - lf - z). package reference qfn8 (3 x 3mm) absolute maximum rat ings (1) vin, en, fb to gnd ...................... - 0 . 3 v to +6v out to gnd ...................... - 0. 5 v to ( v in + 0. 5 v ) continuous power dissipation ..... (t a =25 c ) (2) qfn8 (3x3 mm) ............................................... 2.0w junction temperature .............................. 150 c storage temperature range ..... - 65c to 150c lead temperature (soldering, 10sec) ........... 260c esd susceptibility (3) hbm (human body mo de) .......................... 2kv mm (machine mode) ................................. 200v recommended operating conditions (4) supply input voltage ...................... 2. 5 v to 5 .5 v enable input voltage ........................ 0v to 5.5v operating junction temp . (t j ). - 40 c to +125 c thermal resistance ( 5 ) ja jc qfn8 (3x3 mm) ....................... 50 ...... 12 ... c/w notes: 1) exceeding these ratings may damage the device. 2) the maximum allowable power dissipation is a function of the maximum junction temperature t j (max), t he junction - to - dpelhqwwkhupdouhvlvwdqfh ja , and the ambient temper ature t a . the maximum allowable continuous power dissipation at any ambient temperature is calculated by p d (max) = (t j (max) - t a ja . exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into th ermal shutdown. internal thermal shutdown circuitry protects the device from permanent damage. 3) devices are esd sensitive. handling precaution recommended. 4) the device is not guaranteed to function outside of its operating conditions. 5) measured on jesd51 - 7, 4 - layer pcb.
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 3 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. electrical character istics v in =v out +0.5v or v in =2.5v, en=v in , t j = - 40oc to +125oc typical values are at t j =25c, unless otherwise specified parameter condition min typ max units input voltage 2.5 5.5 v input under voltage lockout v in ri sing 1.95 2. 3 v hysteresis of uvlo 160 mv fb voltage v out =0.8v, i out =1ma t j =25c 0.7 84 0.8 0.8 16 v - 40 t j 125c 0. 776 0.8 0.8 24 output voltage accuracy i out =1ma, t j =25c - 2 2 % i out =1ma, - 40 t j 125 c - 3 3 maximum output current continuou s, v in 2.5v, v out =2.5v 1 a short - circuit current limit v out =0, v in 2.5v 1.2 1.6 2.3 a in - regulation current limit v out =2.5v, v out within 4% of normal output voltage v in =5.5v 1.4 2.2 3.0 a ground current i out =0.1ma, v out =2.5v 130 200 a i out =1a, v ou t =2.5v 400 700 dropout voltage (6) i out =1a, v out =2.5v 140 280 mv i out =750m a , v out =2.5v 105 210 i out =500ma, v out =2.5v 70 140 line regulation (7) v out =2.5v, v in from v out +0.5v to 5.5v, i out =100ma, - 0.15 0.15 %/v load regulation (8) i out from 10 0ma to 1a, v out =2.5v - 0.5 0.5 % output voltage noise (9) i out =100ma, f ranges from 10hz to 100khz v out =1.1v 13 v rms v out =3.3v 35 v out =5v 55 psrr (9) v in = 2.5v, v out = 1.1v, i out = 1a f=100hz 65 db f=1khz 63 f=10khz 63 f=1mhz 33 shutdown supply current v in =+5.5v t j =25c 0. 1 0.3 a - 40 t j 125c 30 en pin current , enabled v in =v en =+5.5v 0.1 0.3 a feedback pin current v in =+5.5v, v fb =6v 0.1 0.3 a startup time v out(nom) =2.5v, c out =4.7 f, v out = 1 0% to 90%v out(nom) 45 100 s en pin threshold en logic high 1.5 v en logic low 0.4 thermal shutdown temperature (9) ty pical thermal hysteresis =20 c 150 c notes: 6) dropout voltage is defined as the input to output differential when the output voltage drops 1 00mv below its nominal value. 7) line regulation= ( ) in(max ) in(min) out v out v in(min) out(nom) in max vv (% / v) vv v ? ? ?? ? ? ?? ? ?? ? ?? 8) load regulation= ( ) out(max ) out(min) out i out i out nom vv (%) v ? ? ?? ? ? ?? ? 9) des ign guarantee , not production test .
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 4 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. typical performance characteristics v in = 2.5 v, v out = 1.1 v, c in = 2.2f, c out =4.7f, t a = 25 c, unless otherwise noted.
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 5 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. typical performance characteristics (continued) v in = 2.5v, v out = 1.1v, c in =2.2f , c out =4.7f, t a = 25 c, unless otherwise noted.
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 6 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. typical performance characteristics (continued) v in = 2.5v, v out = 1.1v, c in =2.2f, c out =4.7f, t a = 25c, unless otherwise noted.
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 7 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. pin functions pin # name pin function 1, 2 vout regulator output. bypass with a stan dard 4.7f ceramic capacitor to gnd. connect all the pins together externally. 3 fb feedback input. connect fb to the center point of the external resistor divider. the feedback threshold voltage is 0.8v. 4 gnd exposed pad ground. connect exposed pad to gnd p lane for optimal thermal performance. 5 en regulator enable control input. drive en above 1.5v to turn on the mpq20051. drive en below 0.4v to turn it off. do not float the en pin. 6 nc no connection. leave this nc pin open. 7, 8 vin regulator input. su pply voltage ranges from 2.5v to 5.5v. bypass with 2.2f capacitor. these pins must be externally connected for proper operation even if they are internally connected.
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 8 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. functional block diagram uvlo vreference ea vin en vout fb gnd figure 1 ? functional block diagram
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 9 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. operation the mpq20051 is a low - dropout linear regulator that can supply up to 1a current , which makes it suitable for very low voltage, low quiescent, low noise , and high psrr applications such as wireless lan transceivers , notebook computers, smartphones , and other low - power electronics . the mpq20051 uses an internal pmos as the pass element and includes both thermal shutdown and an internal current - limit ing circuit. dropout voltage dropout voltage is the minimum input to output differential voltage required for the regulator to maintain an output vol tage within 100mv of its nominal value. because the pmos pass element behaves as a low - value resistor, the dropout voltage of mpq20051 is only 140mv . shutdown the mpq20051 can be switched on or off by a logic input at the en pin : logic high turns the regul ator on and logic low turns it off. tie the en pin to vin if the application does not require the shutdown feature. do not float the en pin. current limit the mpq20051 includes a current limit structure that monitors and controls the pmos gate voltage to limit the guaranteed maximum output current to 1.6a. thermal protection thermal protection turns off the pmos when the junction temperature exceeds 150 c, allowing the ic to cool. when the ic?s junction temperature drops by 20 c, the pmos will turn on agai n. thermal protection limits total power dissipation in the mpq20051 . for reliable operation, limit the junction temperature to a maximum of 125 c. load- transient considerations the output response of the load - transient consists of a transient response and dc shift ? the mpq20051 ?s excellent load regulation effe ctively limits the dc shift . the output voltage transient depends on the output capacitor?s value and esr . increasing the capacitance and decreasing the esr will improve the transient response.
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 10 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. applic ation information setting the output voltage the mpq20051 has an externally - set output voltage with a range of 0.8v to 5v give n a 2.5 v to 5.5 v input . set the output voltage using a resistive voltage divider from the output voltage to the fb pin. the resul t of the voltage divider at the fb pin is : 2 r 1 r 2 r v v out fb + = where v fb is the feedback threshold voltage (v fb = 0.8v), and v out is the output voltage . thus the output voltage is: r2 r2 r1 8 . 0 v out + = r2 can go as high as 100k, but typical applic ations use 10k. after selecting r2 , r1 is determined by: ? ? ? ? ? ? ? ? ? = fb fb out v v v 2 r 1 r for example, for a 1.1 v output voltage, r2 is 10k, and r1 is 3.75 k. you can select a standard 3.75 k (1%) resistor for r1. power dissipation the power dissipation for any package depends on the thermal resistance of the case and circuit board, the temperature differential between the junction and ambient air, and the rate of air flow. the power dissipation across the device can be represented by the equation: ( ) out out in i v v p ? = the allowable power dissipation can be calculated using the following equation: ( ) ja ambient junction (max) t t p ? = / where (t junction ? t ambient ) is the temperature differen tial between the junction and the surrounding environment, ja is the thermal resistance from the junction to the ambient environment. connecting the exposed gnd pad to a large ground pad or plane helps to channel aw ay heat . output capacitor selection the mpq20051 is specifically designed to work with a stand ard ceramic output capacitor to save space and improve performance. use a 4.7f ceramic capacitor for most application s. larger output capacitor s will improve lo ad transient response and reduce noise at the cost of increased size. pcb layout guide pcb layout is very important to achieve good regulation, ripple rejection, transient response and thermal performance. it is highly recommended to duplicate evb layout f or optimum performance. if change is necessary, please follow these guidelines and take figure 2 for reference. 1) input and output bypass ceramic capacitors are suggested to be put close to the in pin and out pin respectively. 2) ensure all feedback conne ctions are short and direct. place the feedback resistors and compensation components as close to the chip as possible. 3) connect in, out and especially gnd respectively to a large copper area to cool the chip to improve thermal performance and long - term reliability. top layer bottom layer figure 2: pcb layout gnd in out gnd in out
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d mpq20051 rev. 1.0 w ww.monolithicpower.com 11 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps . all rights reserved. design example the detailed application schematic is shown in figure 3 . the typical performance and circuit waveforms have been shown in the typical performance characteristics section. for more device applications, please refer to the related evaluation board datasheets typical application circuits figure 3 : 1. 2 v output typical application schematic
mpq20051 ? low noise h igh psrr 1a linear regulator , aec - q100 qualifie d notice: the information in this document is subject to change without notice . users should warrant and guarantee that third party intellectual property rights are not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. mpq20051 rev. 1.0 www.mono lithicpower.com 12 5/24/2016 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. package information qfn8 ( 33mm ) side view top view 1 8 5 4 bottom view 2 . 90 3 . 10 1 . 45 1 . 75 2 . 90 3 . 10 2 . 25 2 . 55 0 . 65 bsc 0 . 20 0 . 30 0 . 80 1 . 00 0 . 00 0 . 05 0 . 20 ref pin 1 id marking 1 . 70 0 . 65 0 . 25 recommended land pattern 2 . 90 note : 1 ) all dimensions are in millimeters . 2 ) exposed paddle size does not include mold flash . 3 ) lead coplanarity shall be 0 . 10 millimeter max . 4 ) jedec reference is mo - 229 , variation veec - 2 . 5 ) drawing is not to scale . pin 1 id see detail a 2 . 50 0 . 70 pin 1 id option b r 0 . 20 typ . pin 1 id option a 0 . 30 x 45 o typ . detail a 0 . 30 0 . 50 pin 1 id index area

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