low dropout regulator the mc33267 is a positive fixed 5.0 v regulator that is specifically designed to maintain proper voltage regulation with an extremely low inputtooutput voltage differential. this device is capable of supplying output currents in excess of 500 ma and contains internal current limiting and thermal shutdown protection. also featured is an onchip powerup reset circuit that is ideally suited for use in microprocessor based systems. whenever the regulator output voltage is below nominal, the reset output is held low. a programmable time delay is initiated after the regulator has reached its nominal level and upon timeout, the reset output is released. due to the low dropout voltage specifications, the mc33267 is ideally suited for use in battery powered industrial and consumer equipment where an extension of useful battery life is desirable. this device is contained in an economical five lead to220 type package. ? low inputtooutput voltage differential ? output current in excess of 500 ma ? onchip powerup reset circuit with programmable delay ? internal current limiting with thermal shutdown ? economical five lead to220 type packages ordering information device tested operating temperature range package mc33267t t =40 to +125 5 c plastic power mc33267tv t j = 40 to +125 c plastic power mc33267d2t t j = 40 to +105 c surface mount representative block diagram input output 1 5 reference 1.25 v thermal overcurrent detector ground 3 1.25 v delay r 0.03 r 3.01 r 20 m a 3.8 v reset 200 reset 2 delay 4 + + this device contains 37 active transistors. on semiconductor ? semiconductor components industries, llc, 2001 march, 2001 rev. 2 1 publication order number: mc33267/d mc33267 semiconductor technical data low dropout regulator with powerup reset 1 5 t suffix plastic package case 314d tv suffix plastic package case 314b 1 pin 1. v cc input 2. reset 3. ground 4. delay 5. output heatsink surface connected to pin 3. 5 d2t suffix plastic package case 936a (d 2 pak) heatsink surface (shown as terminal 6 in case outline drawing) is connected to pin 3. 1 5
mc33267 http://onsemi.com 2 maximum ratings rating symbol value unit input v oltage range v in 20 to + 40 vdc delay voltage range v dlyr 0.3 to v o v delay sink current i dly(sink) 25 ma reset voltage range v rr 0.3 to +15 v reset sink current i r(sink) 50 ma power dissipation case 314b and 314d (to220 t ype) t a = 25 c thermal resistance, junctiontoambient thermal resistance, junctiontocase case 936a (d 2 pak) [note 1] t a = 90 c thermal resistance, junctiontoambient thermal resistance, junctiontocase p d r q ja r q jc p d r q ja r q jc internally limited 62.5 4.0 internally limited 70 5.0 w c/w c/w w c/w c/w operating junction temperature range t j 40 to +150 c storage temperature range t stg 55 to +150 c note: 1. d 2 pak junctiontoambient thermal resistance is for vertical mounting. refer to figure 7 for board mounted thermal resistance. electrical characteristics (v in = 14.4 v, i o = 5.0 ma, c o = 100 m f, c o(esr) 0.3 w , t j = 25 c (note 2), unless otherwise noted.) characteristic symbol min typ max unit output voltage (i o = 5.0 ma to 500 ma, v in = 6.0 v to 28 v) t j = 25 c t j = 40 to +125 c v o 4.95 4.9 5.05 5.15 5.2 v line regulation (v in = 6.0 v to 26 v) reg line 3.0 50 mv load regulation (i o = 5.0 ma to 500 ma) reg load 1.0 50 mv bias current i o = 0 ma i o = 150 ma i o = 500 ma i o = 500 ma, v in = 6.2 v i b 12 22 100 120 20 40 200 300 ma ripple rejection (f = 120 hz, v in = 7.0 v to 17 v, i o = 350 ma, c o = 100 m f) rr 60 80 db dropout voltage (i o = 500 ma) v in v o 0.58 0.8 v delay comparator threshold (v o decreasing) v th(dly) 4.8 v o 0.15 v o 0.08 v delay pin source current i dly(source) 12 20 28 m a reset comparator threshold v th(r) 3.6 3.8 4.0 v reset sink saturation (i sink = 10 ma) v ce(sat) 0.2 0.8 v reset offstate leakage (v ce = 5.0 v) i r(leak) 0.3 10 m a note: 2. low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
mc33267 http://onsemi.com 3 + 0.1 figure 1. typical application circuit input output 1 5 reference 1.25 v thermal overcurrent detector ground 3 1.25 v delay r 0.03 r 3.01 r 20 m a 3.8 v reset 200 reset output 2 delay 4 + + + c in v in 100 c o v o c dly + sink only positive true logic = application circuit information the mc33267 is a low dropout, positive fixed 5.0 v, 500 ma regulator. protection features include output current limiting and thermal shutdown. system protection consists of an onchip powerup microprocessor reset circuit. a typical applications circuit is shown in figure 1. the input bypass capacitor (c in ) is recommended if the regulator is located an appreciable distance ( 4 ) from the supply input filter. this will reduce the circuit's sensitivity to the input line impedance at high frequencies. these regulators are not internally compensated and thus require an external output capacitor (c o ) for stability. the recommended capacitance is 100 m f with an equivalent series resistance (esr) of less than 0.3 w . a minimum capacitance of 33 m f with a maximum esr of 3.0 w can be used in applications where space is a premium, however, these limits must be observed over the entire operating temperature range of the regulator circuit. with economical electrolytic capacitors, cold temperature operation can pose a serious stability problem. as the electrolyte freezes, around 30 c, the capacitance will decrease and the esr will increase drastically, causing the circuit to oscillate. quality electrolytic capacitors with extended temperature ranges of 40 c to + 85 c and 55 c to +105 c are readily available. it is suggested that oven testing of the entire circuit be performed with maximum load, minimum input voltage, and minimum ambient temperature. figure 2 shows the reset circuit timing relationship. note that whenever the regulator's output is less than 4.9 v, the delay capacitor (c dly ) is immediately discharged, and the reset output is held in a low state. as the regulator's output voltage increases beyond 4.97 v, the delay comparator will allow the 20 m a current source to charge c dly . the reset output will go to a high state when c dly crosses the 3.8 v threshold of the reset comparator. the reset delay time is controlled by the value selected for c dly . the required system reset time is governed by the microprocessor and usually a reset signal which lasts several machine cycles is sufficient.
mc33267 http://onsemi.com 4 figure 2. timing waveforms 5.05 v 4.97 v 4.90 v 4.70 v 3.80 v 0.48 v 5.05 v 0 v regulator output (pin 5) delay capacitor (pin 4) reset output (pin 2) t dly t dly 150 mv 6.0 v o , output voltage (v) figure 3. reset output versus input voltage v in , input voltage (v) figure 4. output voltage versus input voltage 6.0 4.0 2.0 1.0 0 0 2.0 v in , input voltage (v) 3.0 v o , reset output voltage (v) 5.0 r l = 10 k to v o t j = 25 c r l = r l = 10 w 4.0 2.0 1.0 0 3.0 5.0 t j = 25 c r l = r l = 10 w 0 2.0 4.0 6.0 8.0 4.0 6.0 8.0
mc33267 http://onsemi.com 5 6.0 v o , output voltage (v) figure 5. reset output versus input voltage v in , input voltage (v) figure 6. output voltage versus input voltage 6.0 4.0 2.0 1.0 0 0 2.0 v in , input voltage (v) 3.0 v o , reset output voltage (v) 5.0 r l = 10 k to v o t j = 25 c r l = r l = 10 w 4.0 2.0 1.0 0 3.0 5.0 t j = 25 c r l = r l = 10 w 0 2.0 4.0 6.0 8.0 4.0 6.0 8.0 r , thermal resistance ja q junctiontoair ( c/w) 30 40 50 60 70 80 1.0 1.5 2.0 2.5 3.0 3.5 0102030 25 15 5.0 l, length of copper (mm) p d(max) for t a = 50 c minimum size pad 2.0 oz. copper l l ???? ???? ???? free air mounted vertically p d , maximum power dissipation (w) r q ja figure 7. d 2 pak thermal resistance and maximum power dissipation versus p.c.b. copper length
mc33267 http://onsemi.com 6 package dimensions t suffix plastic package case 314d04 (to220 type) issue e q 12345 u k d g a b 5 pl j h l e c m q m 0.356 (0.014) t seating plane t dim min max min max millimeters inches a 0.572 0.613 14.529 15.570 b 0.390 0.415 9.906 10.541 c 0.170 0.180 4.318 4.572 d 0.025 0.038 0.635 0.965 e 0.048 0.055 1.219 1.397 g 0.067 bsc 1.702 bsc h 0.087 0.112 2.210 2.845 j 0.015 0.025 0.381 0.635 k 0.990 1.045 25.146 26.543 l 0.320 0.365 8.128 9.271 q 0.140 0.153 3.556 3.886 u 0.105 0.117 2.667 2.972 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension d does not include interconnect bar (dambar) protrusion. dimension d including protrusion shall not exceed 10.92 (0.043) maximum. tv suffix plastic package case 314b05 (to220 type) issue j v q k f u a b g p m 0.10 (0.254) p m t 5x j m 0.24 (0.610) t optional chamfer s l w e c h n t seating plane notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension d does not include interconnect bar (dambar) protrusion. dimension d including protrusion shall not exceed 0.043 (1.092) maximum. dim min max min max millimeters inches a 0.572 0.613 14.529 15.570 b 0.390 0.415 9.906 10.541 c 0.170 0.180 4.318 4.572 d 0.025 0.038 0.635 0.965 e 0.048 0.055 1.219 1.397 f 0.850 0.935 21.590 23.749 g 0.067 bsc 1.702 bsc h 0.166 bsc 4.216 bsc j 0.015 0.025 0.381 0.635 k 0.900 1.100 22.860 27.940 l 0.320 0.365 8.128 9.271 n 0.320 bsc 8.128 bsc q 0.140 0.153 3.556 3.886 s --- 0.620 --- 15.748 u 0.468 0.505 11.888 12.827 v --- 0.735 --- 18.669 w 0.090 0.110 2.286 2.794 5x d
mc33267 http://onsemi.com 7 package dimensions d2t suffix plastic package case 936a02 (d 2 pak) issue b 5 ref a 123 k b s h d g c e m l p n r v u terminal 6 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. tab contour optional within dimensions a and k. 4. dimensions u and v establish a minimum mounting surface for terminal 6. 5. dimensions a and b do not include mold flash or gate protrusions. mold flash and gate protrusions not to exceed 0.025 (0.635) maximum. dim a min max min max millimeters 0.386 0.403 9.804 10.236 inches b 0.356 0.368 9.042 9.347 c 0.170 0.180 4.318 4.572 d 0.026 0.036 0.660 0.914 e 0.045 0.055 1.143 1.397 g 0.067 bsc 1.702 bsc h 0.539 0.579 13.691 14.707 k 0.050 ref 1.270 ref l 0.000 0.010 0.000 0.254 m 0.088 0.102 2.235 2.591 n 0.018 0.026 0.457 0.660 p 0.058 0.078 1.473 1.981 r 5 ref s 0.116 ref 2.946 ref u 0.200 min 5.080 min v 0.250 min 6.350 min 45 m 0.010 (0.254) t t optional chamfer
mc33267 http://onsemi.com 8 on semiconductor and are trademarks of semiconductor components industries, llc (scillc). 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 specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scill c data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into t he body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indem nify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and re asonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized u se, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employ er. publication ordering information central/south america: spanish phone : 3033087143 (monfri 8:00am to 5:00pm mst) email : onlitspanish@hibbertco.com tollfree from mexico: dial 018002882872 for access then dial 8662979322 asia/pacific : ldc for on semiconductor asia support phone : 13036752121 (tuefri 9:00am to 1:00pm, hong kong time) toll free from hong kong & singapore: 00180044223781 email : onlitasia@hibbertco.com japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1410031 phone : 81357402700 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. mc33267/d north america literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com fax response line: 3036752167 or 8003443810 toll free usa/canada n. american technical support : 8002829855 toll free usa/canada europe: ldc for on semiconductor european support german phone : (+1) 3033087140 (monfri 2:30pm to 7:00pm cet) email : onlitgerman@hibbertco.com french phone : (+1) 3033087141 (monfri 2:00pm to 7:00pm cet) email : onlitfrench@hibbertco.com english phone : (+1) 3033087142 (monfri 12:00pm to 5:00pm gmt) email : onlit@hibbertco.com european tollfree access*: 0080044223781 *available from germany, france, italy, uk, ireland
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