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micropower smallcap ? voltage regulators with on/off control the mc33264 series are micropower low dropout voltage regulators available in so8 and micro8 surface mount packages and a wide range of output voltages. these devices feature a very low quiescent current (100 m a in the on mode; 0.1 m a in the off mode), and are capable of supplying output currents up to 100 ma. internal current and thermal limiting protection is provided. they require only a small output capacitance for stability. additionally, the mc33264 has either active high or active low control (pins 2 and 3) that allows a logic level signal to turnoff or turnon the regulator output. due to the low inputtooutput voltage differential and bias current specifications, these devices are ideally suited for battery powered computer, consumer, and industrial equipment where an extension of useful battery life is desirable. mc33264 features: ? low quiescent current (0.3 m a in off mode; 95 m a in on mode) ? low inputtooutput voltage differential of 47 mv at 10 ma, and 131 mv at 50 ma ? multiple output voltages available ? extremely tight line and load regulation ? stable with output capacitance of only 0.22 m f for 4.0 v, 4.75 v and 5.0 v output voltages 0.33 m f for 2.8 v, 3.0 v, 3.3 v and 3.8 v output voltages ? internal current and thermal limiting ? logic level on/off control ? functionally equivalent to tk115xxmc and lp2980 on/off representative block diagram this device contains 37 active transistors. thermal and anti-sat protection 1.23 v v ref v out base adj gnd v in on/off 1 2 3 8 7 6 5 mc33264 52.5 k r int on semiconductor ? semiconductor components industries, llc, 2001 april, 2001 rev. 4 1 publication order number: mc33264/d 8 micro8 mc33264 semiconductor technical data low dropout micropower voltage regulators with on/off control 1 7 6 5 2 3 4 (top view) input on/off on/off output pin connections d suffix plastic package case 751 (so8) n/c base gnd adjust device operating temperature range package ordering information mc33264d2.8 mc33264d3.0 mc33264d3.3 mc33264d3.8 mc33264d4.0 mc33264d4.75 mc33264d5.0 t a = 40 to +85 c so8 mc33264dm2.8 mc33264dm3.0 mc33264dm3.3 mc33264dm3.8 mc33264dm4.0 mc33264dm4.75 mc33264dm5.0 8 1 8 1 dm suffix plastic package case 846a (micro8)
mc33264 http://onsemi.com 2 maximum ratings (t c = 25 c, unless otherwise noted.) rating symbol value unit input voltage v cc 13 vdc power dissipation and thermal characteristics maximum power dissipation p d internally limited w case 751 (so8) d suffix thermal resistance, junctiontoambient r q ja 180 c/w thermal resistance, junctiontocase r q jc 45 c/w case 846a (micro8) dm suffix thermal resistance, junctiontoambient r q ja 240 c/w output current i o 100 ma maximum adjustable output voltage v o 1.15 x v nom vdc operating junction temperature t j 125 c operating ambient temperature t a 40 to +85 c storage temperature range t stg 65 to +150 c note: esd data available upon request. electrical characteristics (v in = 6.0 v, i o = 10 ma, c o = 1.0 m f, t j = 25 c (note 1), unless otherwise noted.) characteristic symbol min typ max unit output voltage (i o = 0 ma) v o v 2.8 suffix (v cc = 3.8 v) 2.74 2.8 2.86 3.0 suffix (v cc = 4.0 v) 2.96 3.0 3.04 3.3 suffix (v cc = 4.3 v) 3.23 3.3 3.37 3.8 suffix (v cc = 4.8 v) 3.72 3.8 3.88 4.0 suffix (v cc = 5.0 v) 3.92 4.0 4.08 4.75 suffix (v cc = 5.75 v) 4.66 4.75 4.85 5.0 suffix (v cc = 6.0 v) 4.9 5.0 5.1 v in = (v o + 1.0) v to 12 v, i o < 60 ma,t a = 40 to +85 c 2.8 suffix 2.7 2.9 3.0 suffix 2.9 3.1 3.3 suffix 3.18 3.42 3.8 suffix 3.67 3.93 4.0 suffix 3.86 4.14 4.75 suffix 4.58 4.92 5.0 suffix 4.83 5.17 line regulation (v in = [v o + 1.0] v to 12 v, i o = 60 ma) reg line 2.0 10 mv all suffixes load regulation (v in = [v o + 1.0], i o = 0 ma to 60 ma) reg load 16 25 mv all suffixes dropout voltage v i v o mv i o = 10 ma 47 90 i o = 50 ma 131 200 i o = 60 ma 147 230 quiescent current i q m a on mode (v in = [v o + 1.0] v, i o = 0 ma) 95 150 off mode 0.3 2.0 on mode (v in = [v o + 0.5] v, i o = 0 ma) [note2] 540 900 ripple rejection (v in peaktopeak = [v o + 1.5] to [v o + 5.5] v at f = 1.0 khz) 55 65 db output voltage temperature coefficient tc 120 ppm/ c current limit (v in = [v o + 1.0], v o shorted) i limit 100 150 ma output noise voltage (10 hz to 100 khz) (note 3) v n m vrms c l = 1.0 m f 110 c l = 100 m f 46 notes: 1. low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2. quiescent current is measured where the pnp pass transistor is in saturation. v ce = 0.5 v guarantees this condition. 3. noise tests on the mc33264 are made with a 0.01 m f capacitor connected across pins 8 and 5.
mc33264 http://onsemi.com 3 electrical characteristics (continued) (v in = 6.0 v, i o = 10 ma, c o = 1.0 m f, t j = 25 c (note 1), unless otherwise noted.) characteristic unit max typ min symbol on/off inputs on/off input (pin 3 tied to ground) v on/off v logic a1o (regulator on) 2.4 v in logic a0o (regulator off) 0 0.5 on/off input (pin 2 tied to v in ) logic a0o (regulator on) 0 v in 2.4 logic a1o (regulator off) v in 0.2 v in on/off pin input current (pin 3 tied to ground) i on/off m a v on/off = 2.4 v 1.9 on/off pin input current (pin 2 tied to v in ) v on/off = v in 2.4 v 12 notes: 1. low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2. quiescent current is measured where the pnp pass transistor is in saturation. v ce = 0.5 v guarantees this condition. 3. noise tests on the mc33264 are made with a 0.01 m f capacitor connected across pins 8 and 5. definitions dropout voltage the input/output voltage differential at which the regulator output no longer maintains regulation against further reductions in input voltage. measured when the output drops 100 mv below its nominal value (which is measured at 1.0 v differential), dropout voltage is affected by junction temperature, load current and minimum input supply requirements. line regulation the change in output voltage for a change in input voltage. the measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. load regulation the change in output voltage for a change in load current at constant chip temperature. maximum power dissipation the maximum total device dissipation for which the regulator will operate within specifications. quiescent current current which is used to operate the regulator chip and is not delivered to the load. output noise voltage the rms ac voltage at the output, with constant load and no input ripple, measured over a specified frequency range. 0 6.0 0.1 5.0 v in , input voltage (v) , quiescent current (ma) figure 1. quiescent current versus load current i load , load current (ma) figure 2. output voltage versus input voltage t a = 25 c mc33264d-5.0 r l = 5.0 k r l = 100 w , output voltage (v) 1.0 10 100 1.0 2.0 3.0 4.0 5.0 6.0 1.0 0.10 0.03 5.0 4.0 3.0 2.0 0 1.0 v o i q t a = 25 c mc33264d-5.0
mc33264 http://onsemi.com 4 , output voltage (v) v o -50 300 -55 5.04 0.3 240 0 1000 r l = 100 to 500 t a , temperature ( c) t a , ambient temperature ( c) , dropout voltage (mv) i o , output current (ma) , input current ( v in , input voltage (v) figure 3. input current versus input voltage figure 4. output voltage versus temperature figure 5. dropout voltage versus output current figure 6. dropout voltage versus temperature no load t a = 25 c mc33264d-5.0 2.0 4.0 8.0 10 12 0 50 75 100 1.0 10 400 0 50 100 150 800 600 400 200 0 v i - v o , dropout voltage (mv) v i - v o r l = 5.0 k , dropout voltage (mv) v i - v o i in 200 160 120 80 40 0 250 200 150 100 50 55 50 45 40 35 30 5.02 5.01 5.00 4.99 4.96 125 w i o = 10 ma t a = 25 c mc33264d-5.0 r l = 40 to 50 k c l = 1.0 m f t a = 25 c mc33264d-5.0 r l = 5.0 k t a = 25 c mc33264d-5.0 r l = 100 r l = 5.0 k r l = 500 100 6.0 -25 25 5.03 4.98 4.97 m a) application information introduction the mc33264 regulators are designed with internal current limiting and thermal shutdown making them userfriendly. these regulators require only 0.33 m f (or greater) capacitance between the output terminal and ground for stability for 2.8 v, 3.0 v, 3.3 v and 3.8 v output voltage options. output voltage options of 4.0 v, 4.75 v and 5.0 v require only 0.22 m f for stability. the output capacitor must be mounted as close to the mc33264 as possible. if the output capacitor must be mounted further than two centimeters away from the mc33264, then a larger value of output capacitor may be required for stability. a value of 0.68 m f or larger is recommended. most types of aluminum, tantalum or multilayer ceramic will perform adequately. solid tantalums or appropriate multilayer ceramic capacitors are recommended for operation below 25 c. a bypass capacitor is recommended across the mc33264 input to ground if more than 4.0 inches of wire connects the input to either a battery or power supply filter capacitor. on/off control on/off control of the regulator may be accomplished in either of two ways. pin 3 may be tied to circuit ground and a positive logic control applied to pin 2. the regulator will be turned on by a positive (>2.4 v) level, typically 5.0 v with respect to ground, sourcing a typical current of 6.0 m a. the regulator will turn off if the control input is a logic a0o (<0.5 v). alternatively, pin 2 may be tied to the regulator input voltage and a negative logic control applied to pin 3. the regulator will be turned on when the control voltage is less than v in 2.4 v, sinking a typical current of 18 m a when v in = 6.0 v. the regulator is off when the control input is open or greater than v in 0.2 v. programming the output voltage the mc33264 output voltage is automatically set using its internal voltage divider. alternatively, it may be programmed within a typical 15% range of its preset output voltage. an external pair of resistors is required, as shown in figure 7.
mc33264 http://onsemi.com 5 figure 7. regulator output voltage trim v in v out 3.0, 3.3 or 5.0 v 3.3 m f 0.01 n/c n/c r2 r1 2 3 gnd adj 65 4 base 7 v out v in 1 8 on/off control input 3.3 m f on/off the complete equation for the output voltage is: v out v ref 1 r1 r2 i fb r1 where v ref is the nominal 1.235 v reference voltage and i fb is the feedback pin bias current, nominally 20 na. the minimum recommended load current of 1.0 m a forces an upper limit of 1.2 m w on the value of r2, if the regulator must w ork with no load. i fb will produce a 2% typical error in v out which may be eliminated at room temperature by adjusting r1. for better accuracy, choosing r2 = 100 k reduces this error to 0.17% while increasing the resistor program current to 12 m a. output noise in many applications it is desirable to reduce the noise present at the output. reducing the regulator bandwidth by increasing the size of the output capacitor is the only method for reducing noise. noise can be reduced fourfold by a bypass capacitor across r1, since it reduces the high frequency gain from 4 to unity for the mc33264d5.0. pick c bypass 1 2 p r1 x 200 hz or about 0.01 m f. when doing this, the output capacitor must be increased to 3.3 m f to maintain stability. these changes reduce the output noise from 430 m v to 100 vrms for a 100 khz bandwidth for the 5.0 v output device. with the bypass capacitor added, noise no longer scales with output voltage so that improvements are more dramatic at higher output voltages. typical applications figure 8. lithium ion battery cell charger unregulated input 6.0 to 10 vdc 2 3 6 4 7 1 8 5 gnd on/off v in v out base adj mc33264d5.0 ground 1n4001 0.22 200 k 1% 100 k 1% 50 k control n/c n/c 0.1 lithium ion rechargeable cell 4.2 v 0.15 v on/off
mc33264 http://onsemi.com 6 figure 9. low drift current source 2 3 6 4 7 1 8 5 gnd on/off v in on/off v out base adj 1.0 m f +v = 4.0 to 12 v load i l i l = 1.23/r 0.1 r control n/c n/c figure 10. 2.0 ampere low dropout regulator mc33264 +v in v out @ 2.0 a 100 m f 4.7 m f tant tip32b 0.05 680 2n3906 120 k 75 k 220 0.033 470 r1 r2 current limit section 0.01 0.33 1000 m f 2 3 6 4 7 1 8 5 gnd on/off v in on/off v out base adj n/c n/c 2n3906
mc33264 http://onsemi.com 7 figure 11. low battery disconnect n/c 31.6 k 6.0 v lead-acid battery 1.0 m f main v+ memory v+ 20 nicad backup battery mc34164p-5 2 1 3 r1 1.0 k r2 3.0 k 0.1 22.1 k mc33264 5 3 4 4 2 1 8 5 gnd on/off v in on/off v out base adj 100 k v bb triple figure 12. rf amplifier supply mc33264 2 3 6 4 7 1 8 5 gnd on/off v in on/off v out base adj idle mode input gnd v cc v bb generator (voltage tripler) priority management negative generator t x on input 13 9 charge pump gate drive output 14 v ss output sense 7 5 4 1.0 0.1 0.1 11 3 12 2 1 sense input 10 1.0 (-2.5 v or -4.0 v) 0.22 mc33169 v bb double 100 m f n/c 5.0 v @ 0.5 a 4.7 m f tant tip32b 200 3.0 k 1.0 k 0.01 0.33 v battery 7.0 v power amplifier rf out rf in 100 100 m f 1n5819 on/off 0.1 1.0 n/c 6 8
mc33264 http://onsemi.com 8 package dimensions d suffix plastic package case 75107 (so8) issue w seating plane 1 4 5 8 n j x 45 k notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a and b do not include mold protrusion. 4. maximum mold protrusion 0.15 (0.006) per side. 5. dimension d does not include dambar protrusion. allowable dambar protrusion shall be 0.127 (0.005) total in excess of the d dimension at maximum material condition. a b s d h c 0.10 (0.004) dim a min max min max inches 4.80 5.00 0.189 0.197 millimeters b 3.80 4.00 0.150 0.157 c 1.35 1.75 0.053 0.069 d 0.33 0.51 0.013 0.020 g 1.27 bsc 0.050 bsc h 0.10 0.25 0.004 0.010 j 0.19 0.25 0.007 0.010 k 0.40 1.27 0.016 0.050 m 0 8 0 8 n 0.25 0.50 0.010 0.020 s 5.80 6.20 0.228 0.244 x y g m y m 0.25 (0.010) z y m 0.25 (0.010) z s x s m dm suffix plastic package case 846a02 (micro8) issue e s b m 0.08 (0.003) a s t dim min max min max inches millimeters a 2.90 3.10 0.114 0.122 b 2.90 3.10 0.114 0.122 c --- 1.10 --- 0.043 d 0.25 0.40 0.010 0.016 g 0.65 bsc 0.026 bsc h 0.05 0.15 0.002 0.006 j 0.13 0.23 0.005 0.009 k 4.75 5.05 0.187 0.199 l 0.40 0.70 0.016 0.028 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a does not include mold flash, protrusions or gate burrs. mold flash, protrusions or gate burrs shall not exceed 0.15 (0.006) per side. 4. dimension b does not include interlead flash or protrusion. interlead flash or protrusion shall not exceed 0.25 (0.010) per side. b a d k g pin 1 id 8 pl 0.038 (0.0015) t seating plane c h j l
mc33264 http://onsemi.com 9 notes
mc33264 http://onsemi.com 10 notes
mc33264 http://onsemi.com 11 notes
mc33264 http://onsemi.com 12 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 the 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 indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthori zed use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. 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. mc33264/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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