mp q 6400- aec1 low quiescent c urrent programmable - delay supervisory circuit available in aec - q100 mpq6400 rev. 1.1 www.monolithicpower.com 1 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. description the mpq6400 family is the microprocessor ( p) supervisory circuit which can monitor and provide reset function for system voltages from 0.4v . w hen either the sense voltage falls below its threshold (v it ) or the voltage of manual reset ( mr ) is pulled to a logic low , the reset signal will be asserted . the reset voltage can be factory - set for standard voltage rails from 0.9v to 5v, while the mpq6400 dg - 01 reset voltage is adjustable with an external resistor d ivider . when sense voltage and mr exceed their thresholds, reset is driven to a logic high after a user - programmable delay time . the mpq6400 has a very low quiescent current of 1. 6 a typically, which makes it ideal su i table for battery - powered applications. it provides a precision reference to achieve 1% threshold accuracy. the reset delay time can be selected by a capacitor which is c onnected between c delay and gnd, allowing the user to select any delay time from 2.1 ms to 10s . 3 8 0ms delay time is selected by connecting the c delay pin to v cc , while 24ms delay time by leaving the c delay pin float. mpq6400 is available in 2mm2mm 6 - pin qfn package. f eatures ? guaranteed industrial/automotive temp range limits ? fixed thres hold voltages for standard voltage rails f rom 0.9v to 5v and a djustable voltage from 0.4v are a vailable ? low quiescent current: 1. 6 a t yp ? power - on reset generator with adjustable delay time: 2.1 ms to 10s ? high threshold accuracy: 1% t yp ? manual reset ( mr ) input ? open - drain reset output ? immune to short negative sense v oltage ? guaranteed reset valid to v cc = 0.8 v ? 22mm qfn ? aec - q100 qualified applications ? dsp or micro controller applications ? laptop/desktop computers ? pdas/hand - h eld products ? portable/battery - powered products ? fpga/asic applications 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, inc. typ ical application
mpq6400 -- l ow quiescent current programmable - delay supervisory ci rcuit mpq6400 rev. 1.1 www.monolithicpower.com 2 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved.
mpq6400 -- l ow quiescent current programmable - delay supervisory ci rcuit mpq6400 rev. 1.1 www.monolithicpower.com 3 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. ordering information part number* package t j mpq6400 dg - 33** qfn 6 ( 2 x2mm) - 40 c to + 125 c mpq6400dg - 33 - aec1 qfn 6 ( 2 x2mm) - 40 c to + 125 c * for tape & reel, add suffix ? z (e.g. mpq6400 dg ? xx- z) ; for rohs compliant packaging, add suffix ? lf (e . g. mpq6400 dg ? xx- lf ? z) . ** check factory for availability in other options. package reference qfn 6 (2 x 2mm) absolute maximum rat ings (1) supply voltage v cc .......................... - 0.3 to 6. 0 v c delay voltage v c delay ........ - 0.3v to v cc + 0.3v sense voltage v sense .................... - 0.3v to 6v all other pins .............................. - 0.3v to +6 . 0 v reset current reset i ................................ 5ma continuous power dissipation (t a = + 25 c) (2) qfn6 (2mmx2mm) .................................... 2.5w junction temperature .............................. 150c lead temperature ................................... 260c storage temperature ............... - 65c to +150 c recommended operating conditions (3 ) supply voltage v cc ........................ 1.8 v to 5.5 v maximum junction temp. (t j ) ............. +125c thermal resistance ( 4 ) ja jc qfn6 (2 x 2mm) ...................... 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 - d p e l h q w w k h u p d o u h v l v w d q f h 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 therma l shutdown. internal thermal shutdown circuitry protects t he device from permanent damage . 3) the device is not guaranteed to function outside of its operating conditions. 4) measured on jesd51 - 7 4- layer board.
mpq6400 ? l ow quiescent current programmable - delay supervisory ci rcuit mpq6400 rev. 1 .1 www.monolithicpower.com 4 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. electrical character istics 1.8v v cc 5.5 v , r 3 = 10 0 k, c 3 = 47pf , t j = - 40c to + 125 c, typical values are at t j =+25c , unless otherwise noted. parameters symbol condition min typ max units input s upply r ange v cc 1.8 5.5 v supply c urrent ( current into v cc pin ) i cc v cc = 3.3v, reset n ot asserted. mr , reset , c delay open 1. 6 5 a v cc = 5.5 v, reset not asserted. mr , reset , c delay open 1.85 15 a low - level o utput v oltage v ol 1.3v v cc < 1. 8v, i ol = 0.4ma 0.3 v 1.8v v cc 5.5 v , i ol = 1.0ma 0.4 v power -up r eset v oltage ( 5 ) v ol (max) = 0.2v , reset i 15ua t rise(vcc) 15 s/v 0.8 v negative - going i nput t hreshold a ccuracy (7) v it -40c to +85 c - 2.5 1.0 1 . 5 % - 40 c t o +125 c - 3 1.7 hysteresis on v it p in v hys 1.5 4 v it % mr internal p ull - up r esistance mr r 50 110 k input c urrent at sense pin i sense fixed versions v sen se = 6 v 2.4 a reset l eakage c u rrent reset v = 5.5 v, reset not asserted 5 00 na mr l ogic l ow i nput v il 0. 25v cc v mr l ogic h igh i nput v ih 0.7v cc v sense m aximum t ransient d uration t w v ih = 1.05 v it , v i l = 0.95 v it 17.5 s reset d elay t ime t d c delay = open 15 24 34 ms c delay = v cc ( 6 ) 230 380 530 ms c delay = 15 0 p f 1.3 2.1 3 m s c delay = 10nf ( 6 ) 61 102 142 ms mr to reset p ropagation d ela y t phl1 v ih = 0.7 v cc , v il = 0. 25 v cc 1 6 0 ns high to l ow l evel reset d elay, sense to reset t phl2 v ih = 1.05 v it , v il = 0.95 v it 17.5 s note: 5) the lowest supply voltage (v cc ) at which reset becom es active. 6) guaranteed by design. 7) v sense falling slowly
mpq6400 -- l ow quiescent curre nt programmable - delay supervisory ci rcuit mpq6400 rev. 1.1 www.monolithicpower.com 5 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. ordering information product package top mark nominal supply voltage threshold voltage (vit) mpq6400 dg - 33 qfn 3.3v 3.07v p in functions qfn pin # name description 1 v cc supply voltage. a 0. 1uf decoupling ceramic capacitor should be put close to this pin. 2 sense sense pin is connected to the monitored system voltage. when the monitored voltage is below desired threshold, reset is asserted. 3 c delay programmable r eset dela y time pin. when c delay connected to v cc through a resistor betwee n 50k and 200k, a 380ms delay time is selected. when c delay floated, the delay time is 24ms. a capacitor bigger than 150pf connected c delay to gnd could be used to get the user?s programmable time from 2.1ms to 10s. 4 mr the manual reset ( mr ) can introduce another logic signal to control the reset . it is internally connected to v cc through a 90k resistor. 5 gnd ground. 6 reset reset is an open drain signal w hich will be asserted when the sense voltage drops below a preset threshold or when the manual reset ( mr ) pin drops to a logic low. the reset delay time is programmable from 2.1ms to 10s by using external capacitors. a pull - up resistor bigger than 10k should be connected this pin to supply line, and the reset outputting a higher voltage than v cc is allowable. detail description the mpq6400 product family assert s a reset signal when either the sense pin voltage is lower than v it or the manual reset ( mr ) is driven low. the mpq6400 - xx family , other than the mpq6400 dg - 0 1, can monitor a fixed voltage from 0. 9 v to 5.0v . the mpq6400 d g - 01 can monitor any voltage ab ove 0.4v by adjusting the external resistor divider. after both the manual reset ( mr ) and sense voltages exceed their thresholds, the reset output remains asserted for a user ?s programmable delay time. two fixed reset delay time s are user - selectable: 3 8 0ms delay time by connecting the c delay pin to v cc , and 2 4 ms delay time by leaving the c delay pin float. a ny delay time from 2.1 ms to 10s could be gotten by connecting a capacitor between c delay and gn d. the wide monitor voltage and programmable reset delay time make mpq6400 product family suitable for a broad array of applications.
mpq6400 ? l ow quiescent current programmable - delay supervisory ci rcuit mpq6400 rev. 1.1 www.monolithicpower.com 6 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. typical performance characteristics v cc =3.3 v , r 3 = 100 k, c 3 = 47pf, t a = - 40c to + 125 c, typical values are at t a =+25c , unless otherwise noted.
mpq6400 ? l ow quiescent current programmable - delay supervisory ci rcuit mpq6400 rev. 1.1 www.monolithicpower.com 7 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. functional block dia gram figure 1 ? functional block diagram figure 2 ? mpq6400 timing diagram truth table mr sense > v it reset l 0 l l 1 l h 0 l h 1 h
mpq6400 ? l ow quiescent current programmable - delay supervisory ci rcuit mpq6400 rev. 1.1 www.monolithicpower.com 8 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. application informat ion reset output function the mpq6400 reset output is typically c onnected to the reset input of a microprocessor , as shown in fig ure 3 . when reset is not asserted , a pull up resistor must be connected to hold this signal high . the voltage of r eset signal is allowed to be higher than v cc (up to 6v) through a resistor pull ing up from supply line. if the voltage is below 0.8v, reset output is un define d. this condition can be ignored generally because that most microprocessors do not function at this state. w h en both sense and mr are higher than their threshold voltage , reset ou tput holds logic high. once either of the two drops below their threshold, reset will be asserte d. figure 3 ?t y pical application of mpq6400 with microprocessor from the point that mr is again logic high and sense is above v it + v hys (the threshold hysteresis), reset will be driven to a logic high after a re set delay time. the reset delay time is programmable by c delay pin. due to the finite impedance of reset pin, the pull up resisto r should be bigger than 10 k. monitor a voltage the sense input pin is connected to the monitored system voltage directly or through a resistor network (on mpq6400 d g - 01) . when the voltage on the pin is below v it , reset is asserted. a threshold hysteresis will pr eve nt the chip from responding perturbation on sense pin . a 1nf to 10nf bypass capacitor should be put on this pin to increase its immunity to noise . a ty pical application of the mpq6400 d g - 0 1 is shown in fig ure 4 . two external resistor s form a voltage divider from monitored voltage to gnd. its tap connects to the sense pin. the circuit can be used to monitor any voltage higher than 0.4v. figure 4 ? mpq6400d g - 01 monitor ing a user - defined voltage monitor multiple system voltages the manual reset ( mr ) can introduce another logic signal to control the reset . when mr is a logic low (0. 25v cc ), reset will be asserted. after both sense and mr are above their threshold s, reset will be driven to a logic high after a re set delay time . the mr is internal ly connected to v cc through a 90 k resistor so this pin can float. see how multiple system voltages are monitored by mr in fig ure 5 . if the signal on mr isn?t up to v cc , there will be an additional current through internal 90k pull up resistor. a logic - level fet can be used to minimize the leakage , as shown in fig ure 6 . figure 5 ? mpq6400 family monitor ing multiple system voltages
mpq6400 ? l ow quiescent current programmable - delay supervisory ci rcuit mpq6400 rev. 1.1 www.monolithicpower.com 9 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. figure 6 ? minimiz ing i cc when mr signal isn ? t over v cc by external mosfet programmable reset del ay time the reset delay time can be programmed by c delay configure. when c delay is connected to vcc through a resistor between 50k and 200k , the delay time is 3 8 0ms. when c delay floated, the delay time is 2 4 ms. in addition , a capacitor connected c delay to gnd could be used to get the user ? s program mable delay time from 2.1 ms to 10s. the three configures can be found in fig ure 7 (a)( b)(c) . figure 7 ? programmable configuration s to the reset delay time the external capacitor c delay must be larg er than 150pf. f or a given delay tim e, t he capacitor value can be calculated using the following equation: 107 s 4.99 s t nf c d delay ? = ? )] ( 10 ) ( [ ) ( 4 the reset de lay time is determined by the charge time of external capacitor. w hile sense is above v it and mr is a logic hig h, the internal 140na current source is enabled and starts to charge the capacitor to set the delay time. when the capacitor voltage rises to 1.13v , the reset is de - asserted . the capacitor will be discharged when the reset is again asserted . stray capacitance may cause errors of the delay time. a ceramic capacitor with low leakage is strongl y recommended. sense voltage transients immunity the mpq6400 can be immune to sense pin short negative transient. the maximum immune duration is 17us while overdrive is 5% . a s hort er ne gative transient can not assert the reset output . the effective duration is relative to the threshold overdrive, as shown in fig ure 8 . fig ure 8 ? maximum transient duration vs . sense threshold overdrive voltage
mpq6400 ? l ow quiescent current programmable - delay supervisory ci rcuit 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. mp q6400 rev. 1.1 www.monolithicpower.com 10 5/24/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. package information qfn6 (2 x 2mm) side view top view 1 6 4 3 bottom view 1.90 2.10 0.65 0.85 1.90 2.10 1.25 1.45 0.65 bsc 0.20 0.30 0.80 1.00 0.00 0.05 0.20 ref pin 1 id marking 0.70 0.65 0.25 recommended land pattern 1.90 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 vccc. 5) drawing is not to scale. pin 1 id see detail a 1.40 0.70 pin 1 id option a 0.30x45o typ. pin 1 id option b r0.20 typ. detail a 0.30 0.40 pin 1 id index area
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