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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.
ka337 / lm337 ? 3-terminal 1.5 a negative adjustable regulator ? 2011 fairchild semiconductor corporation www.fairchildsemi.com ka337 / lm337 rev. 1.1.1 september 2014 ka337 / lm337 3-terminal 1.5 a negative adjustable regulator features ? output-current in excess of 1.5 a ? output-adjustable between -1.25 v and -37 v ? internal thermal overload protection ? internal short-circuit current limiting ? output-transistor safe area compensation ? floating operation for high-voltage applications ? standard 3-pin to-220 package ordering information block diagram figure 1. block diagram product number package packing method operating temperature KA337TU to-220 (dual gauge) rail 0 c to +125 c lm337t to-220 (single gauge) 1 voltage reference - + 2 protection circuitry 3 output input v adj description the ka337 / lm337 are 3-terminal negative adjustable regulators. they supply in excess of 1.5 a over an output voltage range of -1.25 v to -37 v. these regulators require only two external resistors to set the output volt- age and employ current limiting, thermal overload protec- tion, and safe area compensation. to-220 1. adj 2. input 3. output 1 input ka337 / lm337 ? 3-terminal 1.5 a negative adjustable regulator ? 2011 fairchild semiconductor corporation www.fairchildsemi.com ka337 / lm337 rev. 1.1.1 2 absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. in addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. values are at t a = 25c unless otherwise noted. electrical characteristics v i - v o = 5 v, i o = 40 ma, 0 c t j +125 c, p dmax = 20 w; unless otherwise specified. notes: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 2. c adj , when used, is connected between the adjustment pin and ground. symbol parameter value unit iv i - v o i input-output voltage differential 40 v p d power dissipation internally limited w r jc thermal resistance, junction to case 4 c/w t opr operating temperature range 0 to +125 c t stg storage temperature range -65 to +125 c symbol parameter conditions min. typ. max. unit r line line regulation (1) t a = +25 c, 3 v i v i - v o i 40 v 0.01 0.04 %/ v 3 v i v i - v o i 40 v 0.02 0.07 r load load regulation (1) t a = +25 c, 10 ma i o 0.5 a 15 50 mv 10 ma i o 1.5 a 15 150 i adj adjustable pin current 50 100 a i adj adjustable pin current change t a = +25 c, 10 ma i o 1.5 a, 3 v i v i - v o i 40 v 25 a v ref reference voltage t a =+25 c -1.213 -1.250 -1.287 v 3 v i v i - v o i 40 v, 10 ma i o 1.5 a -1.200 -1.250 -1.300 st t temperature stability 0 c t j +125 c 0.6 % i l(min) minimum load current to maintain regulation 3 v i v i - v o i 40 v 2.5 10.0 ma 3 v i v i - v o i 10 v 1.5 6.0 e n rms noise, % of v out t a =+25 c, 10 hz f 10 khz 0.003 % rr ripple rejection ratio v o = -10 v, f = 120 hz 60 db c adj = 10 f (2) 66 77 st long-term stability t j = 125 c, 1000 hours 0.3 1.0 % ka337 / lm337 ? 3-terminal 1.5 a negative adjustable regulator ? 2011 fairchild semiconductor corporation www.fairchildsemi.com ka337 / lm337 rev. 1.1.1 3 typical performance characteristics figure 2. line regulation vs. temperature figure 3. load regulations vs. temperature figure 4. adjustable pin current vs. temperature figure 5. adjustable pin current change vs. temperature figure 6. reference voltage vs. temperature figure 7. minimum load current vs. temperature 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 -40 -20 0 20 40 60 80 100 120 v in = -8 v to -45 v i o = 4 ma v out = -5 v datasheet specs at 25 o c [%] min: - typ: 0.01 max: 0.04 t a - temperature[ o c] r line - line regulatoion (%) 0 10 20 30 40 50 -40 -20 0 20 40 60 80 100 120 i o = 10 ma to 0.5 a i o = 10 ma to 1.5 a v in = -6.25 v v out = -1.25 v i o = 10 ma to 1.5 v datasheet specs at 25 o c [%] min: - typ: 15 mv max: 50 mv t a - temperature[ o c] r load - load regulatoion (mv) 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100 120 v i - v o = 5 v i o = 40 ma datasheet specs at 25 o c [%] min: - typ: 50 a max: 100 a t a - temperature[ o c] i adj - adjustable pin current ( a) 0 2 4 6 8 10 -40 -20 0 20 40 60 80 100 120 datsheet specs at 25 o c min: typ: 2 a max: 5 a v i - v o = 3 v to 40 v i o = 10 ma to 1.5 v v i - v o = 3 v to 40 v, i o = 10 ma v i - v o = 3 v to 40 v, i o = 1.5 a v i - v o = 3 v, i o = 10 ma to 1.5 a v i - v o = 40 v, i o = 10 ma to 1.5 a t a - temperature[ o c] i adj - adjustable pin current ( a) 1.20 1.22 1.24 1.26 1.28 1.30 -40 -20 0 20 40 60 80 100 120 datsheet specs at 25 o c min: 1.213 v typ: 1.25 v max: 1.287 v v i - v o = 3 v to 40 v i o = 10 ma to 1.5 v v i - v o = 3 v, i o = 10 ma v i - v o = 3 v, i o = 1.5 a v i - v o = 5 v, i o = 40 ma v i - v o = 40 v, i o = 10 ma v i - v o = 40 v, i o = 1.5 a t a - temperature[ o c] i adj - adjustable pin current ( a) 0 2 4 6 8 10 -40 -20 0 20 40 60 80 100 120 datsheet specs min: typ: 2.5 m a max: 10 m a v i - v o = 3 v to 40 v v = 3 v v i - v o = 10 v v i - v o = 40 v t a - temperature[ o c] i lmin - minimum load current [ m a] ka337 / lm337 ? 3-terminal 1.5 a negative adjustable regulator ? 2011 fairchild semiconductor corporation www.fairchildsemi.com ka337 / lm337 rev. 1.1.1 4 typical performance characteristics figure 8. noise voltage vs. temperature figure 9. ripple rejection vs. temperature figure 10. short-circuit currents vs. temperature figure 11. peak current vs. temperature 0 10 20 30 40 50 60 70 80 10 100 1000 10 4 -45 -25 0 25 55 85 100 125 e n - noise voltage (uvrms) v i -v o = 5v bandwidth frequency (hz) 50 55 60 65 70 75 80 -40 -20 0 20 40 60 80 100 120 w/o c adj with c adj v out = -10 v c adj = 10 f datasheet specs w/o c adj min: typ: 60 db max: with c adj min: 66 db typ: 77 db max: t a - temperature[ o c] rr - ripple rejection ratio (db) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 -40 -20 0 20 40 60 80 100 120 v i - v o = 40 v v out = gnd test specs at 25 o c [%] min: 0.08 a typ: 0.25 a max: 0.9 a t a - temperature[ o c] i scc - short circuit current (a) 1.5 2.0 2.5 3.0 3.5 -40 -20 0 20 40 60 80 100 120 test specs at 25 o c min: 1.5 a typ: 2.5 a max: 3.5 a v i - v o = 5 v t a - temperature[ o c] i adj - adjustable pin current ( a) ka337 / lm337 ? 3-terminal 1.5 a negative adjustable regulator ? 2011 fairchild semiconductor corporation www.fairchildsemi.com ka337 / lm337 rev. 1.1.1 5 typical application figure 12. typical application notes: 3. c i is required if regulator is located more then 4 inches from power supply filter. 1.0 f solid tantalum or 10 f aluminum electrolytic is recommended. 4. c o is necessary for stability. 1.0 f solid tantalum or 10 f aluminum electrolytic is recommended. v o = -1.25 v (1 + r 2 / r 1 ). -v o -v i + co (4) 1 f c i (3) r 2 r 1 iadj v i v o + i prog vadj ka337 / lm337 1 f 120 ka337 / lm337 ? 3-terminal 1.5 a negative adjustable regulator ? 2011 fairchild semiconductor corporation www.fairchildsemi.com ka337 / lm337 rev. 1.1.1 6 physical dimensions figure 13. to-220, molded, 3lead, jedec variation ab ? fairchild semiconductor corporation www.fairchildsemi.com trademarks the following includes registered and unregistered trademarks and service marks, owned by fairchild semiconductor and/or its gl obal subsidiaries, and is not intended to be an exhaustive list of all such trademarks. accupower awinda ? ax-cap ? * bitsic build it now coreplus corepower crossvolt ctl current transfer logic deuxpeed ? dual cool? ecospark ? efficientmax esbc fairchild ? fairchild semiconductor ? fact quiet series fact ? fast ? fastvcore fetbench fps f-pfs frfet ? global power resource sm greenbridge green fps green fps e-series g max gto intellimax isoplanar making small speakers sound louder and better? megabuck microcoupler microfet micropak micropak2 millerdrive motionmax motiongrid ? mti ? mtx ? mvn ? mwsaver ? optohit ? powertrench ? powerxs? programmable active droop qfet ? qs quiet series rapidconfigure saving our world, 1mw/w/kw at a time? signalwise smartmax smart start solutions for your success spm ? stealth superfet ? supersot -3 supersot -6 supersot -8 supremos ? syncfet sync-lock? ?* tinyboost ? tinybuck ? tinycalc tinylogic ? tinyopto tinypower tinypwm tinywire transic trifault detect truecurrent ? * serdes uhc ? ultra frfet unifet vcx visualmax voltageplus xs? xsens? y'z ? * trademarks of system general corporation, used under license by fairchild semiconductor. disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function, or design. t o obtain the latest, most up-to-date datasheet and product information, visit our website at http://www.fairchildsemi.com. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. these specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers these products. life support policy fairchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. anti-counterfeiting policy fairchild semiconductor corporation's anti-counterfeiting policy. fairchild's anti-counterfeiting policy is also stated on our external website, www.fairchildsemi.com, under sales support. counterfeiting of semiconductor parts is a growing problem in the industry. all manufacturers of semiconductor products are exp eriencing counterfeiting of their parts. customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substa ndard performance, failed applications, and increased cost of production and manufacturing delays. fairchild is taking strong measures to protect ourselv es and our customers from the proliferation of counterfeit parts. fairchild strongly encourages customers to purchase fairchild parts either directly from fa irchild or from authorized fairchild distributors who are listed by country on our web page cited above. products customers buy either from fairchild directly or fr om authorized fairchild distributors are genuine parts, have full traceability, meet fairchild's quality standards for handling and storage and provide access to fa irchild's full range of up-to-date technical and product information. fairchild and our authorized distributors will stand behind all warranties and will appropriately addr ess any warranty issues that may arise. fairchild will not provide any warranty coverage or other assistance for parts bought from unauthorized sources. fairchild is c ommitted to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors . product status definitions definition of terms datasheet identification product status definition advance information formative / in design datasheet contains the design specifications for product development. specifications may change in any manner without notice. preliminary first production datasheet contains preliminary data; supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice to improve design. no identification needed full production datasheet contains final specifications. fairchild semiconductor reserves the right to make changes at any time without notice to improve the design. obsolete not in production datasheet contains specifications on a product that is discontinued by fairchild semiconductor. the datasheet is for reference information only. rev. i71 ? 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 ? 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