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Order this data sheet by MC34064/D t ` MC34064 MC33064 I Product Preview I UNDERVOLTAGE SENSING CIRCUIT The MC34064 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based systems. voltage It offers detection the with designer a single an economical external solution for low The MC34064 features a trimmed-in-package bandgap reference, and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 volt input with low standby current. These devices are resistor. packaged in 3-pin TO-226AA and 8-pin surface mount packages, ,),,$ Applications include direct monitoring of the 5.0 volt MPU/logic ,,$:.$ power supply used in appliance, automotive, consumer and$~iv ,,*.:$\ .'~:~} industrial equipment. >.,$$:SN , ,~< Temperature Compensated Refer~~~$ "+.] . Trimmed-In-package ,.,:. q Precise Comparator Thresholds Guaranteed Over Temperature . q Comparator Reset Output Hysteresis Capable Prevents of Sinking Erratic Reset $,, ~ it>,. \ ~$} }.~t$ ....,.,, \ :.,.. ~.~~! . -'?\:{::, i\: 23 ! 1 PIN 1. RESET 2. INPUT 3. GROUND in ExcessO~~ 10'~rnA .!+.) . Internal Clamp Diode for Discharging Del>% G&pacitor .,:$/ , f:$>,..,,,,,.<,..~,~, . Guaranteed Reset Operation with 1~$~:&~~~hput .'.' ?:,>7: .,..' .$;,,.: . .>.. . Low Standby Current .*&\,:$*:~, . ."'+~ q Economical TO-226AA and Sq{%;&ount Packages ., k;,<~:$ "$$:j) *.,.>>4`:~.,$! ?{l, ..$ $$ ..,. .t: ..!$.Y,`~$,~,,+,,$ ?l ,, ~,:, !;. ~ ~,i ~,:?t\f$!,:t, ~. ltt~$~,:el;-' . .~:,: "'.,s !~i~..,., .. .. . ,,$' ,,>+; .,:$~ ,!.i $*.i\, ,:.. ..... ;\,~%i :;* ,>, J~\,&$~#RESENTATIVE BLOCK DIAGRAM ,J$. .. :,$ w. ~:~;.y.~, ... tk#*$}nput Q 2 (2) ,}"`:" , Reset /?: "~>~$. ., $$ ~ $$\h, .,$. , $:.~hb ;, ,>,+ ,,:") 1 (1) `[+.> .,!.:, .. "$~,$>,:, \... ~s~k! ~ ;$i:,>$,+. \ .?. ~{:,i,$+,.. ~ ,~~ ?i!~ D SUFFIX PLASTIC PACKAGE CASE 751-02 SO-8 8 \e& PIN 1. 2. 3. 4. RESET INPUT NC. GROUND 5. 6. 7. 8. N.C. N.C. N.C. N.C. 1.2 Vref 1 .[ Gnd d 3 (4) * a- + 1 _ Sink Only Positive True Logic L I ORDERING INFORMATION Device MC34064D-5 MC34064P-5 MC33064D-5 - 40C to + 85C MC33064P-5 Plastic TO-226AA INC., 1988 1 Temperature Range Wc to + 70c Package Plastic SO-8 Plastic TO-226W Plastic SO-8 Hn numbers adjacent to terminals are for the 3-pin TO-226AA package. Pin numbers in parenthesis are for the D suffix SO-8 package. his document contains information on a Droduct under development. to change or discontinue this produti without notice. Motorola reser"es the riaht ----- OMOTOROM NP220 .,. + MAXIMUM RATINGS Rating Symbol yn Value -1.oto 10 Unit v Power Input Supply Voltage Voltage Reset Output Reset Output Clamp Vo Isink Pin 1 to 2 (Note 1) IF 10 Internally Limited v mA *,\ *'X,l, $J,$<,.,'$:. ,,.,'~ `!i.,, 1 , +ts., ~~$b.`1$,>. ,,:\>. Sink Current Current, Diode Forward 100 mA Power Dissipation and Thermal Characteristics P Suffix, Plastic Package Maximum Power Dissipation @ TA = 2wC Thermal Resistance, Junction to Air D Sutix, Plastic Package Maximum Power Dissipation @ TA = 2TC Thermal Operating Resistance Junction to Air pD ROJA pD ROJA TJ TA 625 200 mW `cm 625 mW 200 +150 `CM Oc .,,4.b' ,f,, ~, .:;. *!+,<\\ ,:Y \i\l X:%k ..,$., ~?,:. ,J\;t,\\ \ .1:. ,,.3@,.,~\. ,, ,.$.. `$ . ~ .. .'+,* ....?s4-.:?, ,3{ ~;)h,k, ` ,:.''::,:`" ,,>$:t+,, .,. ~ i?!,,."4f\;,) ..:, ~ <./$,,+ ,,.:? Yt;\ .p,:Jk$; Junction Temperature Temperature Operating Ambient MC34064 MC33064 Storage Temperature Oto +70 -40to +85 Range For typical Tstq -65to +150 .. crating ambient temperature ELECTRICAL CHARACTERISTICS values TA = 25C, for rein/ma range that applies [Notes 2 and 3]. Characteristic COMPARATOR Threshold Voltage High State Output (Vin Increasing) Low State Output (Vin Decreasing) Hysteresis .V .. ~, 1.$..+ ,,;!" , , ~'! ,:~<::,+',..i, ... vlH `.*.)* ~>;:.:+ vlL ,*\\+ \.ij ~,:. ~ vH Max Unit v 4.5 4.5 4.61 4.59 4.7 4.7 RESET OUTPUT Output (~n Sink Saturation = 4,0 V, lsi~k = 8,0 mA) (Vin = 4.0V, [sink = 20 mA) (Vin = 1.0 V, Isink = 0,1 mA) ~ Output Off-State Leakage (~n, Clamp Diode Forward ,t.i,y \ \ ~h $?,. ,bi ` l:;!~,i]t.t.. .%, t::,;:s ... . ,,+<> \ .:*, \'i\?<,\j,t {$, ,\.,,~,> ~q, .~. ,8:: ~, `%fi! .,{., .,?,1,. ~ \;.\.~` ,4 ,C.,..\*{?+:,, ,1.,. .:J$\F\ ,.\\,,..:?., `:>?, 0,01 0.02 0,05 vOL v -- -- -- Isink 10 -- 0,6 0,46 0.15 -- 27 1,0 0.4 0.1 60 0.5 1.2 mA PA v R@W.~'!.&$ V) 10 mA) 10H vF 0.02 0.9 TOTAL DEVICE Operating Quiescent Voltage<$~,,jr~~ <- -.$i : 2 (IF = `~+?t~~, ~ `i... ,?*.. &n Iin Input Voltag@#qnge:'@ Input Curr#~tq.#V= 5.0 V) 1.0 to 6.5 -- -- 390 -- v PA ,,,~' ; `\+t::r>,~:@ NOTES: I* -. dissipation limits must he nhser"ed 1. Maximum pa'~~power 2. Low duty * Mlse techniques i 500 (M) MOTOROLA semiconductor Products /n.. 4 FIGURE 1 -- RESET OUTPUT VOLTAGE versus INPUT VOLTAGE FIGURE 2 -- RESET OUTPUT VOLTAGE INPUT VOLTAGE 5.0 versus 10 1 I RL=lOkto~n TA = 25C 4.0 ~ >6 o 1.0 I I I I L .. .3. , \\. .>. I I i 0 0 2.0 4.0 6.0 8.0 10 ~", INPUT VOLTAGE (V) FIGURE 3 -- COMPARATOR THRESHOLD versus TEMPERATURE VOLTAGE 7" b & \ Ifl A Av TA = +2YC, 5 + 85C > 4.580 4.570 0 0 2,0 4,0 6.0 8.0 10 ~n, INPUT VOLTAGE (V) FIGURE 6 -- CLAMP DIODE FORWARD versus VOLTAGE CURRENT o 10 20 [Sink, SINK CURRENT (mA) 30 40 0 0.4 0.8 VF,FORWARD VOLTAGE (V) 1.2 1.6 MOTOROLA @ Semiconductor Products Inc. ,. r. 1---& ------- --- 1N756 1 I I = 1) I 1 Test lLine Regulation Load Regulation Output Ripple Efficiency 1 l~n=ll,5V Conditions to14.5V,10=50mA = OmAto50mA = 50mA = 50mA Results 135mv 12 mV 60 mVp-p 77~0 I Vin = `12.6 V,10 Vin = 12.6 V,10 Vin = 12.6 V,10 MO~OROLA @ Semiconductor Products /nc. OUTLINE DIMENSIONS \ND"E ARE OATUMS AND NOTES: 1, CONTOUR OF PACKAGE BEYOND ZONE ,'P' IS UNCONTROLLED. 2, DIM "V APPLIES BEWEEN "D& "S' APPLIES BEWEEN "H AND "L', DIM "~& 12,70mm JRFACE. !SIONING AND TOLERANCING PER ANSI ,,? *.. \?.:,,, "~ >::}> `J:.$ta *,{ `.<(?{ !~';;,, ~.,.,. `?{$. 3, CONTROLLING OIM: MILLIMETER, 4, DIMENSION "W AND "W DO NOT INCLUOE MOLO PROTRUSION, 5. MAXIMUM MOLD PROTRUSION 0,15 (0,006)PER SIOE. (0.W) FROM SEATING PLANE. LEAD DIM IS UNQONTROLLEOIN "H & BEYONO 12.70mm Motorola rasarves the right to make changes of others. Motorola without and@ further notice to any products or circuit trademarks herein to improve herein: reliability, neither function does or design. Employment Motorola does its not asaume patent rights Affirmative any liability Action arising out of the application or use of any product are registered described it convey any license under nor the rights Employer. of Motorola, Inc. Motorola, Inc. IS an Equal Opportunity/ MOTOROLA @ Semiconductor Products Inc. . . .. :--. --.-. ~,, . .. . . . .., . . it,~ `j o a o MOTOROLA @ 22753 ~1~~ ," "SA 4-08 ~,,= .,,"0 ,55721 15,000 Semiconductor BOX 20912. PHOENIX, Products ARIZONA 85036. Inc. A SUBSIDIARY OF MOTOROLA INC. -- YWU Order this data sheet by MC34064/D o Advance Information UNDERVOLTAGE SENSING CIRCUIT The MC34064 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based for low systems, It offers the designer an economical solution voltage detection with a single external resistor. The MC34064 features a trimmed-in-package bandgap reference, and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 volt input with low standby current. These devices are packaged in 3-pin TO-226AA and 8-pin surface mount packages. ,. Applications include direct monitoring of the 5.0 volt MPU/logic , $~ power supply used in appliance, automotive, consumer and.;{~r"$ \$\, .+.,, industrial equipment. +t.>$ :.J,*$:.iit.< q Trimmed-In-Package Temperature Compensated Refere~~ "a}.:. q MC34064 MC33064 comparatorThresholdof4.6v at29C 8 c>+,`Yir ., q precise Comparator Thresholds Guaranteed Over I:y:$:c !>..., :: Temperature ..,:,\~. . Comparator Hysteresis Prevents Erratic Re~@~ " o Reset Output Capable of Sinking in Exces%.o~~O mA .$, ~ t.+, ,,.~~j q Internal Clamp Diode for Dischargin~,~~~~~~apacitor q q q ~:~ ~> \ l.\\:. $J.tht .,..,&@? 1 3 PIN 1. RESET 2. INPUT 3. GROUND Guaranteed Reset ,Operation with ~$~$~@*t Input ,:N T..J. . *`+?1,,,.,, ~ ,,\\ Low Standby Current ,,,,,...,..w~\\ -x ~ ,--,, ,. !,t.),,,, . Economical TO-226AA and SQ-'@S'firface Mount Packages ,..,., `,.,,.,43 ..$ ,.,,. ,:y ~:..k !: \\i$.l.}. *.:$,t~ $\+i>, .... `. :<.,, . . ~+ ,.\:, `,,! f~~.~ ,,~:.,tt.,< ` .:~pi,,i.." :i-+ .+, > ,,., .,\. ,.'. ,(>!,,if .i$~' ,,;. ~.;'~'$+x:~" ,\~... >. y,l:~%ESENTATIVE BLOCKDIAGRAM ",$.$, ;:; $.!+.., .-''3.?:.,$ :~:& e+%.> twput o 2 (2) [~:, - ?~ ~{ %,?, .:$ D SUFFIX PUSTIC PACKAGE CASE 751-03 SO-8 8 \~& 7 PIN 1. 2. 3. 4. 5. 6. 7. 8. RESET INPUT N.C. GROUND N.C. N.C. N.C. N.C. ,4,<. ..~:~~,, ,~!\.. Reset 1) S.;a)> --$~t, <,"?' .$:* $:/~,,.?$.:$. , ~*\. ,., &,m,*y ,..,. ..>. .:<:%.. \* o 1 (1) -- U4 $ 4 I $ 1.2Vref 1 Gnd 43(4) o - s-- + m -.. I ms document contains Information subject to change without notice. I _ Sink Only Positive True Logic ORDERING INFORMATION Device MC34064D-5 O"c to + 70c MC34064P-5 MC33064D-5 - 40C to + 8YC MC33064P-5 Plastic TO-226AA Temperature Range Package Plastic SO-8 Plastic TO-226M Plastic SO-8 I Pin numbers adjacent to terminals are for the 3-pin TO-226W package. Pin numbers in parenthesis are for the D suffix SO-8 package. on a new product. Specifications and information herein are QMOTOROU INC., 1989 ADI 1483 (Replaces NP220) MAXIMUM RATINGS Rating Symbol ~n Vo. Value -l.o tolo 10 Unit v v Power Input Supply Voltage Reset Output Voltage Reset Output Sink Current (Note 1) Clamp Diode Forward" Current, Pin 1 to 2 (Note 1) Power Dissipation andTh,ermal P Sutix, Plastic Packaga Maximum Thermal Power Dissipation Resistance, Junction Characteristics @ TA = 25C to Air @ TA = 25C to Air Isink IF Internally Limited 100 mA mA pD RgJA PD ROJA TJ TA 625 mW 200 625 "CM mW D Suffix, Plastic Package Maximum Power Dissipation Thermal Resistance Junction Operating Junction Temperature Operating Ambient Temperature MC34064 MC33064 Storage Temperature Range 200 +150 Oto +70 -40to +85 "CM `c `c Tstq -65to +150 "c ~:$'q . ,,) $ . .- ..: .+\,.:,> {..{,. TA is the operating ambient temperature " Min Typ Max Unit ELECTRICAL CHARACTERISTICS For typical values TA = 25C, for min/m~~)~lues range that applies [Notes 2 and 3]. ,,:~}' Characteristic COMPARATOR Threshold Voltage High State Output (Vin Increasing) Low State Output (~n Decreasing) Hysteresis RESET OUTPUT Output Sink Saturation (Vin = 4,0 V, lsi~k = 8,0 mA) (Vin 4,0 lsi~k2.0 mA) = V, = (~n Output "~~$:; >?:; ~$. "'!$.XL,,, )f;:,., ~~i?::.~ $ .,+.::> * .,<:,$ .~*: b>~. ..~i,,~,,,! ` ,'~l. ~ ,,y~~ ",.).`:;*J. `.l,~lt) .t? +.i,.k 3., ,:+,>&*7/~~+:~*, `.. .,.,,. >. VOL .,:? . ,,\\& ? ,.,*Y ?{*, <~~!~$~hboi ,,< :$. (i\,:t ~><:x:.::.t,,s,,. ,\ ~$,, , ~' ~ ":.:.;, l',~.~t! ,><. .,.." ~~t.ii VIH ..}t.. ,, VI L VH v 4.5 4.5 0.01 4.61 4.59 4.7 4.7 0.02 0.05 v -- 0,46 .0.15 -- 27 0.02 0.9 -- -- Isink IOH VF 10 1.0" 0.4 0.1 = 1,0 V, Isink = 0.1 mA) Sink Current -?,2 (Vin, Reset = 4~ V).& "'4" 60 0.5 1.2 mA PA v Output Off-State Leakage (Vin, ~~se {~='5.O V) Clamp Diode Forward Volta@.$k%#:to "~~~,: *,. $ TOTAL DEVICE ..*** ~: Operating input Volt~@$~a,@ge 2 (IF = 10 mA) -- 0.6 Vin Iin 1.0 to 6.5 -- -- 390 -- v Quiescent Input ~~~t''~in = 5.o V) ,.,,:.:,, ~ ..,,.. ? .,$), NOTES: `"'~i. '+.::, power dissipation limits must be observed. 1. Maximu~;~@k~e 2. Low ~@ 500 PA c~~e pulse techniques are used during teat to maintain junction temperature VO"Cfor MC34064 Thigh = +70C for MC34064 3. T1.q$$ %/++., *y = + a5C for MC33064 ~y ~;.;:?.~: - 400c `or MC33064 ~ ~itt~},h ..3\,\, ,~< \ `\;,,:, ~YJ:i*\\., J*,,:.. , .!!,< .!~'; as close to ambient aa possible. L@ MOTOROLA Semiconductor Products /nc. 2 FIGURE 1 -- RESET OUTPUT VOLTAGE INPUT VOLTAGE versus FIGURE 2 -- RESET OUTPUT VOLTAGE INPUT VOLTAGE 5.0 I [ RL= 10kto~n TA = 2YC versus 10 RL= 10kto~n TA = 2YC I I I I * I I I I 0 o 2.0 4.0 6.0 8.0 10 ~",INPUTVOLTAGE (V) FIGURE 3 -- COMPARATOR THRESHOLD versus TEMPERATURE 4.630 VOLTAGE I I TA = +25C\ 4.570 -- 0 2.0 4.0 6.0 8.0 10 Vin, INPUT VOLTAGE (V] FIGURE 6 -- RESET DELAY TIME 90? 109 5.0 v- 0 10 20 Isink, SINK CURRENT (mA) 30 40 4.0 v 100 ns/Div. MOTOROLA @ Semiconductor Products Inc. 3 J!*J O*J FIGURE 7 -- CLAMP DIODE FORWARD CURRENT versus VOLTAGE i I I I I A I TEST DATA VH (mV) ------ -- Avth (mV) RH (0) RL (kO) 20 51 o 3.4 0 10 0 1.5 1'4 : ?1 :: 10 10 16 16 34 : 30 30 47 47 100 x 2.7 1.5 2.7 1.5 2.7 ---- = -- Avth(lower) Where: = 340 RH x 1o-6 Q < 10kQ RH <150 RL> 112 100 164 190 1.5kQ, Comparator hysteresis can be increased with the addition of resistor RH. The hysteresis equation has been simplified and does not account for the change of input current Iin as VCC crosses the comparator threshold (figure 4). An increase of the lower threshold AVth(lower) will ba observed due to Iin which is typically 340 KA at 4.59 V. The equations are accurate to * IOY. with RH less than 150 Q and RL between 1.5 kQ and 10kQ. w MOTOROLA @ Semiconductor Producfs Inc. 4 + r Power supply -- ! = FIGURE 10 -- VOLTAGE MONITOR FIGURE 11 -- SOLAR POWERED BATTERY CHARGER 1 2 (2) ------ $ _ l.Ok I I i Vin = 11.5 v to 14.5 v = 4.7 k = ------. 1 -- --A MPSW51A 25 KH -- ,\: Test Line Regulation Load Regulation Output Ripple Conditions Vin = 11.5 Vto14.5V, ~n I ~n [0 = 50mA Results 35 mV 12 mV 60 mVp-p = 12.6 V, 10 = O mA to 50 mA = 12.6 V, 10 = 50 mA Overheating of the logic level power MOSFET due to insufficient gate voltage can be prevented with the above circuit, When tha input signal is below the 4.6 volt threshold of the MC34064, it's output grounds the gate of the L2 MOSFET. m A 2 (2) I & 1 (1) -- 5 + 1.2 Vref MOTOROLA @ Semiconductor 5 Products Inc. P SUFFIX PLASTIC PACWGE CASE 29-04 NOTES: 1,CONTOUROFPACKAGE BEYONDZONE"P Is UNCONTROLLED, 2.DIM"V'APPLIES EWEEN "H"ANO "~,DIM B "D"& "S"APPLIES E~EEN"~ & 12.70mm B (0.5") SEATING FROM PLANE. LEADDIMIS UNCONTROLLEDIN"H & BEYOND 12,70mm (0.WIROM SEATING F PLANE. 3.CONTROLLING DIM: INCH, @lTl +10.25(0,0101 B @lA o] DIM A B c D F G J K M P R MILLIMETERS MIN MAX 4.80 5,00 3.80 4,00 1.35 1,75 0.35 0.49 0.40 1.25 121 BSC 0.18 0.25 0,10 0.25 0 7" 5,80 6,20 0.25 0,50 INCHES MIN MAX 0.189 0.196 0.150 0.157 0,054 0.068 0.014 0.019 0.016 0,049 0.050 BSC 0.007 0.009 0.004 0.009 o" 7" 0.229 0.244 0,010 0.019 Motorola reserves the rig does not assume any Iiat under ita patant rights nor Ine rlgma OTotners. MOtOrOla products are not intended for surgical implant into the bodv or intended to support or auat: whereupon Motorola shall determine availability and suitability of ita prod trademarks of Motorola, Inc. Motorola, Inc. is an Equal Employment Oppo , .-r.-,-.. MOTOROLA @ Semiconductor Products Inc. BOX 20912 YCUM q PHOENIX, ARIZONA 85036 q A SUBSIDIARY OF MOTOROLA INC. -- 22753-1PRIwD IN USA 3-89 lWERUL LITI!O C6Z966 5,000 |
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