device operating temperature range package semiconductor technical data high safety standby ladder mode greenline ? pwm controller ordering information MC44604P t a = 25 to +85 c plastic dip p suffix plastic package case 648 16 1 pin connections order this document from analog marketing 116 13 12 11 10 9 2 3 4 5 6 7 8 (top view) v cc v c output overvoltage protection current sense input demagnetization detection input r ref standby current set gnd foldback input c t softstart/d max / votlage mode clamp error amp input error amp output 15 14 error amp input standby management 1 motorola analog ic device data
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the mc44604 is an enhanced high performance controller that is specifically designed for offline and dctodc converter applications. the mc44604 is a modification of the mc44603. the mc44604 offers enhanced safety and reliable power management in its protection features (foldback, overvoltage detection, softstart, accurate demagnetization detection). its high current totem pole output is also ideally suited for driving a power mosfet but can also be used for driving a bipolar transistor in low power converters (< 150 w). in addition, the mc44604 offers a new efficient way to reduce the standby operating power by means of a patented standby ladder mode operation of the converter significantly reducing the converter consumption in standby mode. current or voltage mode controller ? operation up to 250 khz output switching frequency ? inherent feed forward compensation ? latching pwm for cyclebycycle current limiting ? oscillator with precise frequency control high flexibility ? externally programmable reference current ? secondary or primary sensing ? high current totem pole output ? undervoltage lockout with hysteresis safety/protection features ? overvoltage protection facility against open loop ? protection against short circuit on oscillator pin ? fully programmable foldback ? softstart feature ? accurate maximum duty cycle setting ? demagnetization (zero current detection) protection ? internally trimmed reference greenline ? controller: ? low startup and operating current ? patented standby ladder mode for low standby losses ? low dv/dt for low emi greenline is a trademark of motorola, inc. this document contains information on a product under development. motorola reserves the right to change or discontinue this product without notice. ? motorola, inc. 1996 issue 0
mc44604 2 motorola analog ic device data p suffix plastic package case 64808 issue r outline dimensions notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension l to center of leads when formed parallel. 4. dimension b does not include mold flash. 5. rounded corners optional. a b f c s h g d j l m 16 pl seating 18 9 16 k plane t m a m 0.25 (0.010) t dim min max min max millimeters inches a 0.740 0.770 18.80 19.55 b 0.250 0.270 6.35 6.85 c 0.145 0.175 3.69 4.44 d 0.015 0.021 0.39 0.53 f 0.040 0.70 1.02 1.77 g 0.100 bsc 2.54 bsc h 0.050 bsc 1.27 bsc j 0.008 0.015 0.21 0.38 k 0.110 0.130 2.80 3.30 l 0.295 0.305 7.50 7.74 m 0 10 0 10 s 0.020 0.040 0.51 1.01 motorola reserves the right to make changes without further notice to any products herein. motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does motorola 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 consequential or incidental damages. atypicalo parameters which may be provided in motorola 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. motorola does not convey any license under its patent rights nor the rights of others. motorola 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 motorola product could create a situation where personal injury or death may occur. should buyer purchase or use motorola products for any such unintended or unauthorized application, buyer shall indemnify and hold motorola 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 unauthorized use, even if such claim alleges that motorola was negligent regarding the design or manufacture of the part. motorola and are registered trademarks of motorola, inc. motorola, inc. is an equal opportunity/affirmative action employer. how to reach us: usa / europe / locations not listed : motorola literature distribution; japan : nippon motorola ltd.; tatsumispdjldc, 6f seibubutsuryucenter, p.o. box 20912; phoenix, arizona 85036. 18004412447 or 6023035454 3142 tatsumi kotoku, tokyo 135, japan. 038135218315 mfax : rmfax0@email.sps.mot.com touchtone 6 022446609 asia / pacific : motorola semiconductors h.k. ltd.; 8b tai ping industrial park, internet : http://designnet.com 51 ting kok r oad, tai po, n.t., hong kong. 85226629298 mc44604/d ?
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