to learn more about on semiconductor, please visit our website at www.onsemi.com please note: as part of the fairchild semiconductor integration, some of the fairchild orderable part numbers will need to change in order to meet on semiconductors system requirements. since the on semiconductor product management systems do not have the ability to manage part nomenclature that utilizes an underscore (_), the underscore (_) in the fairchild part numbers will be changed to a dash (-). this document may contain device numbers with an underscore (_). please check the on semiconductor website to verify the updated device numbers. the most current and up-to-date ordering information can be found at www.onsemi.com . please email any questions regarding the system integration to fairchild_questions@onsemi.com . is now part of on semiconductor and the on semiconductor logo are trademarks of semiconductor components industries, llc dba on semiconductor or its subsidiaries in the united states and/or other countries. on semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. a listing of on semiconductors product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent-marking.pdf. on semiconductor reserves the right to make changes without further notice to any products herein. on semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does on semiconductor assume any liability arising out of the application or use of any product or circuit, and specifcally disclaims any and all liability, including without limitation special, consequential or incidental damages. buyer is responsible for its products and applications using on semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by on semiconductor. typical parameters which may be provided in on semiconductor data sheets and/or specifcations can and do vary in different applications and actual performance may vary over time. all operating parameters, including typicals must be validated for each customer application by customers technical experts. on semiconductor does not convey any license under its patent rights nor the rights of others. on semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any fda class 3 medical devices or medical devices with a same or similar classifcation in a foreign jurisdiction or any devices intended for implantation in the human body. should buyer purchase or use on semiconductor products for any such unintended or unauthorized application, buyer shall indemnify and hold on semiconductor and its offcers, employees, subsidiaries, affliates, 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 on semiconductor was negligent regarding the design or manufacture of the part. on semiconductor is an equal opportunity/affrmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner.
april 2009 ? 2003 fairchild semiconductor corporation www.fairchildsemi.com KA7500C ? rev. 1.0.2 KA7500C ? smps controller KA7500C smps controller features ? internal regulator provides a stable 5v reference supply trimmed to 1% accuracy ? uncommitted output tr for 200ma sink or source current ? output control for push-pull or single-ended operation ? variable duty cycle by dead-time control (pin 4) complete pwm control circuit ? on-chip oscillator with master or slave operation ? internal circuit prohibits double pulse at either output description the KA7500C is used for the control circuit of the pulse- width modulation switching regulator. the KA7500C consists of 5v referenc e voltage circuit, two error amplifiers, flip flop, an output control circuit, a pwm comparator, a dead-time comparator, and an oscillator. this device can be operated in the switching frequency of 1khz to 300khz. the precision of voltage reference (v ref ) is improved up to 1% with trimming. this provides a better output voltage regulation. the operating temperature range is -25c ~ +85c. 16-lead dip 16-lead sop ordering information part number operating temperature range eco status package packing method KA7500C 16-lead dual inline package (dip) tube KA7500Cd tube KA7500Cdtf -25 to +85c rohs 16-lead small outline package (sop) tape and reel for fairchild?s definition of eco status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html .
? 2003 fairchild semiconductor corporation www.fairchildsemi.com KA7500C ? rev. 1.0.2 2 KA7500C ? smps controller block diagram figure 1. block diagram
? 2003 fairchild semiconductor corporation www.fairchildsemi.com KA7500C ? rev. 1.0.2 3 KA7500C ? smps controller typical application KA7500C 12 v cc 11 c2 8 c1 3 comp in put - 2 v ref 14 -15 +1 +16 c t 5 r t 6 d.t 4 gn d 7 e1 9 e2 10 o.c 13 ksa1010 v i =10v to 40v 1mh, 2a v o =5v i o =1a gnd 47 ? 150 ? 1m ? 5.1k ? 5. 1 k ? 5.1k ? 150 ? 47k ? 0.001f + 50f 50v + 0.1 + 50 f 10 v 0.1f + 500f 10v figure 2. pulse-width modul ated step-down converter
? 2003 fairchild semiconductor corporation www.fairchildsemi.com KA7500C ? rev. 1.0.2 4 KA7500C ? smps controller absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. in addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. symbol parameter min. max. unit v cc supply voltage 42 v v c collector supply voltage 42 v i o output current 250 ma v in amplifier input voltage v cc + 0.3 v KA7500C 1 p d power dissipation KA7500Cd 0.9 w t opr operation temperature range -25 +85 c t stg storage temperature rang -65 +150 c t j junction temperature +125 c recommended operating conditions the recommended operating conditions table defines the conditions for actual device operation. recommended operating conditions are specified to ens ure optimal performance to the datasheet specifications. fairchild does not recommend exceeding them or designing to absolute maximum ratings. symbol parameter min. typ. max. unit v cc power supply voltage 7 15 40 v v c1 , v c2 collector supply voltage 30 40 v i c1 , i c2 collector output current (each transition) 200 ma v in amplifier input voltage 0.3 v cc - 2.0 v i fb current into feedback terminal 0.3 ma i ref reference output terminal 10 ma r t timing resistor 1.8 30.0 500.0 k c t timing capacitor 0.0047 0.0010 10.0000 a f osc oscillator frequency 1 40 200 khz v in_pwm pwm input voltage (pins 3, 4, and 13) 0.3 5.3 v
? 2003 fairchild semiconductor corporation www.fairchildsemi.com KA7500C ? rev. 1.0.2 5 KA7500C ? smps controller electrical characteristics v cc = 20v, f = 10khz, t a = -25c to +85c, unless otherwise specified. symbol parameter conditions min. typ. max. units reference section i ref =1ma, t a =25c (1) 4.95 5.00 5.05 v ref reference output voltage i ref =1ma 4.90 5.00 5.10 v r line line regulation v cc =7v to 40v 2 25 mv r load load regulation i ref =1ma to 10ma 1 15 mv i sc short-circuit output current v ref =0v 10 35 50 ma oscillation frequency c t =0.001f, r t =30k 40.0 c t =0.01f, r t =12k , t a =25c 9.2 10.0 10.8 f osc oscillation frequency c t =0.01f, r t =12k , t a =t low to t high 9.0 12.0 khz f/ t frequency change with temperature c t =0.01f, r t =12k 2 % dead-time control section i bias input bias current v cc =15v, 0v v 4 5.25v -2 -10 a d (max) maximum duty cycle v cc =15v, v 4 =0v, oc pin=v ref 45 % zero duty cycle 3.0 3.3 v ith input threshold voltage maximum duty cycle 0 v error amplifier section v io input offset voltage v 3 =2.5v 2 10 mv i io input offset current v 3 =2.5v 25 250 ma i bias input bias current v 3 =2.5v 0.2 1.0 a v cim common mode input voltage 7v v cc 40v -0.3 v cc v g vo open-loop voltage gain 0.5v v 3 3.5v 70 95 db b w unit-gain bandwidth 650 khz pwm comparator section v ith input threshold voltage zero duty cycle 4.0 4.5 v i sink input sink current v 3 =0.7v -0.3 -0.7 ma output section v ce(sat) output saturation voltage common emitter v e =0v, i c =200ma 1.0 1.3 v cc(sat) emitter-follower v c =15v, i e =-200ma 1.5 2.5 v i c(off) collector off-state current v cc =40v, v ce =40v 2 100 i e(off) emitter off-state current v cc =v c =40v, v e =40v -100 a total device i cc supply current pin6=v ref , v cc =15v 6 10 ma output switching characteristics t r rise time, common emitter, common collector 100 200 t f fall time, common emitter, common collector 25 100 ns note: 1. this is guaranteed where the marking c ode of the package surface is over 027.
1.27 3.85 7.35 1.75 0.65 0.05 min 1.80 max 1.65 1.45 c 6.00 4.15 3.75 1.27 0.30 0.51 0.36 10.10 9.70 9.08 8.68 1 8 9 16 0.20 m c b a a b r0.20 0.303 0.153 a 8 r0.10 0.36 0.90 0.50 gage plane seating plane top view front view side view land pattern recommendation notes: a. this drawing complies with jedec ms-012, except as noted b this dimension is outside jedec ms-012 value c. all dimensions are in millimeters d. dimensions are exclusive of burrs, mold flash, and tie bar extrusions e. land pattern standard: soic127p600x175-16am f. drawing filename: mkt-m16erev2 detail a scale 3:1 b b b 0.10 c
5.33 max 0.38 min 4.95 2.92 3.81 2.92 1.78 1.14 0.56 0.36 2.54 front view c 19.69 18.67 7.11 6.10 (0.40) top view a b 0.28 0.20 10.92 8.25 7.62 side view notes: a. conforms to jedec ms-001, variation bb b. all dimensions are in millimeters c. dimensions are exclusive of burrs, mold flash, and tie bar protrusions d. dimensions and tolerances per asme y14.5m-2009 e. drawing filename: mkt-n16erev3 1 8 9 16 0.25 m c
www. onsemi.com 1 on semiconductor and are trademarks of semiconductor components industries, llc dba on semiconductor or its subsidiaries i n the united states and/or other countries. on semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property . a listing of on semiconductor?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent ? marking.pdf . on semiconductor reserves the right to make changes without further notice to any products herein. on semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does o n semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. buyer is responsible for its products and applications using on semiconductor products, including compliance with all laws, reg ulations and safety requirements or standards, regardless of any support or applications information provided by on semiconductor. ?typical? parameters which may be provided in on semiconductor data sheets and/or specifications can and do vary in dif ferent applications and actual performance may vary over time. all operating parameters, including ?typic als? must be validated for each customer application by customer?s technical experts. on semiconductor does not convey any license under its patent rights nor the right s of others. on semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any fda class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. should buyer purchase or use on semicondu ctor products for any such unintended or unauthorized application, buyer shall indemnify and hold on semiconductor and its officers, employees, subsidiaries, affiliates, and distrib utors 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 on semiconductor was negligent regarding the design or manufacture of the part. on semiconductor is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5817 ? 1050 www.onsemi.com literature fulfillment : literature distribution center for on semiconductor 19521 e. 32nd pkwy, aurora, colorado 80011 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative ? semiconductor components industries, llc
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