ap4312 document number: ds 36797 rev. 1 - 2 1 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated constant voltage and constant current controller description the ap4312 is a highly integrated solution for a constant voltage/constant current mode smps application. the ap4312 contains one 1.2 1v voltage reference, one low voltage reference used in current sensing circuit and two operational amplifiers. the 1.21v voltage reference, combined with one operational amplifier, makes of an ideal voltage controller for use in adapters and battery charg ers. the low voltage reference, combined with another operational amplifier, makes of an ideal current limiter for output low side current sensing. the ap4312 is fully compatible with ap4306 in functionality and electrical characteristics except its lower reference voltage for current control loop, thus higher power efficiency in smps applications such as low power charger can be realized with ap4312 compared to ap4306. the ap4312 is available in sot 2 6 package. features ? constant voltage and constant current control ? precision internal voltage reference ? low external component count ? easy compensation ? low supply current: 180 ? a ? current control loop reference: 70mv ? operating supply voltage: 1.7v to 18v ? totally lead - free & fully rohs compliant (note 1 & 2) ? halogen and antimony free. green device (note 3) pin assignments ( top view) s ot 26 ( k 6 package ) applications ? adapters ? battery chargers note s: 1 . no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporateds definitions of hal ogen - and antimony - free, "green" and lead - f ree . 3. halogen - and antimony - free "green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds . v s e n s e g n d v c t r l i c t r l v o u t v c c 1 2 3 4 5 pin 1 mark 6
ap4312 document number: ds 36797 rev. 1 - 2 2 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated typical applications circuit typical application 1 typical application 2 1 . 2 1 0 v v c c v o u t g n d v s e n s e i c t r l r s s r 4 t o p r i m a r y r 2 r 1 v o u t + v o u t - l o a d c 1 r 3 c 3 r 5 r 6 5 0 0 v c t r l a p 4 3 1 2 + + i l ss sense r v it currentlim ? 1 2 1 r r r v v ref out ? ? ? ) ( 1 2 1 )] ( [ ss l ss l ref ut o r i r r r r i v v ? ? ? ? ? ? ? ss sense r v it currentlim ? 1 . 210 v v cc v out gnd v sense i ctrl r ss r 4 to primary r 2 r 1 v out + v out - load c 1 r 3 c 3 r 5 r 6 500 v ctrl ap 4312 + + i l
ap4312 document number: ds 36797 rev. 1 - 2 3 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated typical applications circuit (cont .) typical application 3 pin description s pin number p in name function 1 v ctrl input pin of the voltage control loop 2 gnd ground 3 v out output pin. sinking current only 4 i ctrl i nput pin of the current control loop 5 v sense input pin of the current control loop 6 v cc power supply 1 . 210 v v cc v out gnd v sense i ctrl r ss r 4 to primary r 2 r 1 v out + v out - load c 1 r 3 c 3 r 5 r 6 500 v ctrl ap 4312 + + i l ) ( 1 2 1 ss l ref out r i r r r v v ? ? ? ? ? ? ? ss ref sense ref sense r v v v v it currentlim ? ? ? ?
ap4312 document number: ds 36797 rev. 1 - 2 4 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated functional block diagram absolute maximum ratings (note 4 ) symbol parameter rating unit v cc power supply voltage 20 v v in input voltage - 0.3 to v cc v t j junction temperature + 150 ? c t stg storage temperature - 6 5 to + 150 ? c t lead lead temperature (soldering, 5 sec) + 260 ? c j a thermal resistance (junction to ambient) 250 ? c /w note 4 : stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. these are str ess ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating condi tions is not implied. exposure to absolute maximum ratings for extended periods may affect device reliability. recommended operating conditions symbol parameter min max unit v cc power supply voltage 1.7 18 v v c c v o u t v c t r l g n d v s e n s e i c t r l 4 5 2 1 3 6 1 . 2 1 0 v
ap4312 document number: ds 36797 rev. 1 - 2 5 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated electrical characteristics (@ v cc =5 v, t a = + 25 ? c , unless othe rwise specified .) symbol parameters conditions min typ max unit total current consumption i cc total supply current not including the output sinking current t a = +25 ? c C 180 C a - 40 ? c < t a < + 10 5 ? c C C 300 v oltage control loop gmv transconductance of voltage control loop op - amp (sink current only) t a = +25 ? c 1 3.5 C ma/mv - 40 ? c < t a < + 10 5 ? c C 2.5 C v ref voltage control loop reference t a = +25 ? c 1. 204 1.21 1.2 16 v - 40 ? c < t a < + 10 5 ? c 1.186 1.234 i ibv input bias current (v ctrl ) t a = +25 ? c C 50 C na - 40 ? c < t a < + 10 5 ? c C 100 C current control loop gmi transconductance of current control loop op - amp (sink current only) t a = +25 ? c 1.5 7 C ma/mv - 40 ? c < t a < + 10 5 ? c 1.5 7 C v sense current control loop reference t a = +25 ? c 67.9 70 72.1 mv - 40 ? c < t a < + 10 5 ? c 66 74 i ibi current out of pin i ctrl at v sense t a = +25 ? c C 18 C a - 40 ? c < t a < + 10 5 ? c C 35 C output stage v ol low output voltage level t a =+25 ? c , i sink =2ma C 100 C mv - 40 ? c ap4312 document number: ds 36797 rev. 1 - 2 6 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated performance characteristics voltage control loop reference current control loop reference vs. ambient temperature vs. ambient temperature input bias current (v ctrl ) current out of pin i ctrl at v sense vs. ambient temperature vs. ambient temperature transconductance of voltage control loop transconductance of current control loop op - amp vs. ambient temperature op - amp vs. ambient temperature -20 0 20 40 60 80 100 120 10 12 14 16 18 20 22 24 ambient temperature ( o c ) i ibi ( ? a) v cc =1.7v v cc =5v v cc =18v -20 0 20 40 60 80 100 120 0 1 2 3 4 5 6 7 8 ambient temperature ( o c ) gmv (ma/mv) v cc =1.7v v cc =5v v cc =18v -40 -20 0 20 40 60 80 100 120 140 66 67 68 69 70 71 72 73 74 v sense (mv) ambient temperature ( o c) v cc =1.7v v cc =5v v cc =18v -20 0 20 40 60 80 100 120 1.190 1.195 1.200 1.205 1.210 1.215 1.220 1.225 1.230 v cc =1.7v v cc =5v v cc =18v v ref (v) ambient temperature ( o c ) -20 0 20 40 60 80 100 120 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ambient temperature ( o c ) gmi (ma/mv) v cc =1.7v v cc =5v v cc =18v -20 0 20 40 60 80 100 120 0 10 20 30 40 50 ambient temperature ( o c ) i ibv (na) v cc =1.7v v cc =5v v cc =18v
ap4312 document number: ds 36797 rev. 1 - 2 7 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated performance characteristics (cont .) low output level of voltage control loop low output level of current control loop op - amp vs. ambient temperature op - amp vs. ambient temperature output short circuit current of voltage control output short circuit current of current control loop op - amp vs. ambient temperature loop op - amp vs. ambient temperature total supply current not including the low output voltage level vs. sink current output sinking current vs. ambient temperature -20 0 20 40 60 80 100 120 0 10 20 30 40 50 ambient temperature ( o c ) v olv (mv) v cc =1.7v v cc =5v v cc =18v -20 0 20 40 60 80 100 120 0 10 20 30 40 50 60 70 ambient temperature ( o c ) i osv (ma) v cc =1.7v v cc =5v v cc =18v -20 0 20 40 60 80 100 120 0 50 100 150 200 250 300 ambient temperature ( o c ) i cc ( ? a) v cc =1.7v v cc =5v v cc =18v -20 0 20 40 60 80 100 120 0 10 20 30 40 50 ambient temperature ( o c ) v olc (mv) v cc =1.7v v cc =5v v cc =18v 0 5 10 15 20 25 30 35 0 100 200 300 400 500 600 700 800 v ol (mv) sink current (ma) -20 0 20 40 60 80 100 120 0 10 20 30 40 50 60 70 ambient temperature ( o c ) i osc (ma) v cc =1.7v v cc =5v v cc =18v
ap4312 document number: ds 36797 rev. 1 - 2 8 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated ordering information diodes ics pb - free products with "g1" suffix in the part number, are rohs compliant and green . package part number marking id packing sot 2 6 ap4312 k6tr - g1 g kd 3000/ t ape & reel mark ing information : logo xxx: marking id ( see ordering information ) a p 4 3 1 2 x x x x - g 1 p a c k i n g p a c k a g e t r : t a p e & r e e l k 6 : s o t 2 6 g 1 : g r e e n p r o d u c t n a m e r o h s / g r e e n
ap4312 document number: ds 36797 rev. 1 - 2 9 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated package outline dimensions (all d imensions in mm (inch) . ) (1) package t ype: s ot 2 6 2 . 8 2 0 ( 0 . 1 1 1 ) 3 . 1 0 0 ( 0 . 1 2 2 ) 2 . 6 5 0 ( 0 . 1 0 4 ) 3 . 0 0 0 ( 0 . 1 1 8 ) 1 . 5 0 0 ( 0 . 0 5 9 ) 1 . 7 0 0 ( 0 . 0 6 7 ) 0 . 9 5 0 ( 0 . 0 3 7 ) t y p 1 . 8 0 0 ( 0 . 0 7 1 ) 2 . 0 0 0 ( 0 . 0 7 9 ) 0 . 3 0 0 ( 0 . 0 1 2 ) 0 . 5 0 0 ( 0 . 0 2 0 ) 0 . 7 0 0 ( 0 . 0 2 8 ) r e f 0 . 1 0 0 ( 0 . 0 0 4 ) 0 . 2 0 0 ( 0 . 0 0 8 ) 0 8 0 . 2 0 0 ( 0 . 0 0 8 ) 0 . 3 0 0 ( 0 . 0 1 2 ) 0 . 6 0 0 ( 0 . 0 2 4 ) 0 . 0 0 0 ( 0 . 0 0 0 ) 0 . 1 5 0 ( 0 . 0 0 6 ) 0 . 9 0 0 ( 0 . 0 3 5 ) 1 . 3 0 0 ( 0 . 0 5 1 ) 1 . 4 5 0 ( 0 . 0 5 7 ) m a x 1 2 3 4 5 6 p i n 1 m a r k
ap4312 document number: ds 36797 rev. 1 - 2 10 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated suggested pad layout (1) package t ype: s ot 2 6 dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e (mm)/(inch) value 3.600/0.142 1.600/0.063 0.700/0.028 1.000/0.039 0.950/0.037 e e g z y x
ap4312 document number: ds 36797 rev. 1 - 2 11 of 11 www.diodes.com j anuary 2014 ? diodes incorporated ap4312 a product line of diodes incorporated important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other c hanges without further notice to this document and any product described herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license unde r its patent or trademark rights, nor the rights of others. any customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diod es incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. should customers purchase or use diodes incorporated products for any unintended or unauthorized application, customers shall indem nify and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising ou t of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized applic ation. products described herein may be covered by one or more united states, international or foreign patents pending. product nam es and markings noted herein may also be covered by one or more united states, international or foreign trademarks. this d ocument is written in english but may be translated into multiple languages for reference. only the english version of this document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are spe cifically not authorized for use as critical components in life support devices or systems without the express written approval of the chief executive officer of diodes incorporated. as used herein: a. life support devices or systems are devices or syst ems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support device or system whose failure to perform can be reasonably expe cted to cause the failure of the life support device or to affect its safety or effectiveness. custo mers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support device s or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety - related requirements concerning their products and any use of diodes incorporated products in such safety - critical, life support devices or systems, notwithstanding any devices - or systems - related information or support that may be provided by diodes incorporated. further, cu stomers must fully indemnify diodes incorporated and its representatives against any damages arising out of the use of diodes incorporated products in such safety - critical, life support devices or systems. copyright ? 201 3 , diodes incorporated www.diodes .com
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