AP1688 document number: ds36603 rev. 2 - 2 1 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product ac/dc, high pf, high efficiency, universal mains led driver controller description the AP1688 is a high performance ac/dc pfc and constant current controller for universal mains led dr iver applications. the device is a buck controller which operate s as a boundary conduction mode (bcm) to achieve high efficiency and easy emi. an open loop algorithm is adopted in the AP1688, which will make the system achieve excellent line and l oad regulations with high pf for universal mains input. the AP1688 features fast start-up, low start-up current, low operation current and high efficiency. it also has rich protection features including over voltage, short and open circuit, over current, over temperature protection. the AP1688 is available in so-8 package. pin assignments (top view) (so-8/ m package) features ? optimized for buck topology ? boundary conduction mode (bcm) operation to achieve high efficiency ? high power factor > 0.9 ? high efficiency > 90% ? system current accuracy: 5% ? good line regulation and load regulation ? low start-up current ? tight cc regulation performance for universal input mains voltage range ? eliminates control loop compensation circuitry ? easy emi ? open-load and reload detection ? over temperature protection ? over current protection ? over voltage and short and open circuit protection ? totally lead-free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. ?green? device (note 3 ) applications ? universal mains led lighting notes: 1. no purposely added lead. fully eu directiv e 2002/95/ec (rohs) & 2011/6 5/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more in formation about diodes incorporated?s definitions of halogen- a nd antimony-free, "green" and lead-free. 3. halogen- and antimony-free "green? products are defin ed as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. typical applications circuit fb out cs gnd vs va vcc AP1688 t1 c4 + - v out d1 tvs q1 r cs d2 v ac r1 r2 r5 r4 c5 c3 c2 c1 c6 bd1 r3 r6 r7 l1 l2 8 2 3 6 4 7 5 1 2 3 4 8 7 6 5 nc vs va cs fb gnd out vcc
AP1688 document number: ds36603 rev. 2 - 2 2 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product pin descriptions pin number pin name function 1 nc no connection 2 vs detects the negative terminal voltage of output. 3 va detects the average value of the negative terminal voltage of output. 4 cs primary current sensing 5 fb the feedback voltage sensing from the auxiliary winding 6 gnd ground 7 out gate driver output 8 vcc supply voltage of gate driver and control circuits of the ic functional block diagram vcc out cs gnd fb vs regulator & bias s rq zcd detector input current shaping and constant current control uvlo ovp pro uvlo - + comp zcd - + ea 0.1v 1.75v peak current control & leb driver va r s q cv_ctrl 4 5 2 3 6 7 8
AP1688 document number: ds36603 rev. 2 - 2 3 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product absolute maximum ratings (@t a = +25c, unless otherwise specified. note 4) symbol parameter rating unit v cc power supply voltage -0.3 to 40 v i out driver output current 300 ma v vs , v va , v cs voltage at vs, va, cs to gnd -0.3 to 7 v v fb fb input voltage -40 to 10 v t j operating junction te mperature +150 c t stg storage temperature -65 to +150 c t lead lead temperature (soldering, 10 sec) +300 c p d power dissipation (t a = +50c) 0.65 w ja thermal resistance (junction to ambient) 190 c/w ? esd (human body model) 3000 v ? esd (machine model) 200 v note 4: stresses greater than those listed under ?absolute maxi mum ratings? may cause permanent damage to the device. these ar e stress ratings only, and functional operation of the devic e at these or any other conditions beyond thos e indicated under ?recommended operating conditi ons? 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 12 21 v t a ambient temperature -40 +105 c
AP1688 document number: ds36603 rev. 2 - 2 4 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product electrical characteristics (@t a = +25c, unless otherwise specified.) symbol parameter conditions min typ max unit uvlo section v th (st) start-up threshold ? 18 19 20 v v opr (min) minimum operating voltage after turn on 7 8 9 v v cc_ovp vcc ovp voltage ? 28 32 36 v standby current section i st start-up current v cc = v th (st)-0.5v, before start up ? ? 20 a i cc (opr) operating current static ? 1000 1300 a drive output section v oh output high level voltage i gd_source = 20ma v cc = 12v 10 ? ? v v ol output low level voltage i gd_sink = 20ma v cc = 12v ? ? 1 v t r output voltage rise time c l = 1nf 100 140 190 ns t f output voltage fall time c l = 1nf 30 60 90 ns v o_clamp output clamp voltage i gd_source = 5ma v cc = 20v 12 13.5 15 v v uvlo uvlo saturation voltage v cc = 0 to v cc_on i sink = 10ma ? ? 1.1 v current sense section t on (min) minimum on time ? 500 1000 1500 ns v socp short circuit protection voltage ? 3 4 ? v feedback input section i fb fb pin input leakage current v fb = 4v ? 2 8 a v fb (cv) cv threshold ? 3.8 4.0 4.2 v v fb (ovp) over voltage protection ? 4.5 6 7.5 v vs input section v vs /v va (max) maximum ratio v vs = v va = 3v 0.8 1 1.2 v v vs /v va (min) minimum ratio v vs = 0v, v va = 3v ? ? 0.2 v over temperature protection section ? shutdown temperature ? ? +170 ? c ? temperature hysteresis ? ? +20 ? c
AP1688 document number: ds36603 rev. 2 - 2 5 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product performance characteristics supply current vs. supply voltage cv threshold vs. sup ply voltage output clamp voltage vs. supply voltage start-up voltage vs. ambient temperature minimal operating voltage vs. ambient temperature start-up current vs. ambient temperature 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 supply current ( ? a) supply voltage (v) 8 1012141618202224262830 3.6 3.7 3.8 3.9 4.0 4.1 4.2 cv threshold (v) supply voltage (v) 8 1012141618202224262830 5 6 7 8 9 10 11 12 13 14 15 output clamp voltage (v) supply voltage (v) -40 -20 0 20 40 60 80 100 120 18.0 18.2 18.4 18.6 18.8 19.0 19.2 19.4 start-up voltage (v) ambient temperature ( o c) -40-20 0 20406080100120 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 minimal operating voltage (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 start-up current ( ? a) ambient temperature ( o c)
AP1688 document number: ds36603 rev. 2 - 2 6 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product performance characteristics (cont.) operating current vs. ambient temperature cv threshold vs. ambient temperature fb leakage current vs. ambient temperature -40 -20 0 20 40 60 80 100 120 850 900 950 1000 1050 1100 1150 1200 1250 operating current ( ? a) ambient temperature ( o c) -40-20 0 20406080100120 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 cv threshold (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 1.0 1.5 2.0 2.5 3.0 3.5 4.0 fb input leakage current ( ? a) ambient temperature ( o c)
AP1688 document number: ds36603 rev. 2 - 2 7 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product ordering information AP1688 x xx C g1 packing package product name tr : tape & reel m : so-8 g1 : green rohs /green diodes ic?s pb-free products with "g1" suffix in the part number, are rohs compliant and green. package temperature range part number marking id packing so-8 -40 to +105c AP1688mtr-g1 1688m-g1 4000/13??tape & reel marking information (top view) first and second lines: logo and marking id (see ordering information) third line: date code y: year ww: work week of molding a: assembly house code xx: 7 th and8 th di g its of batch no 1688 m-g1 ywwaxx
AP1688 document number: ds36603 rev. 2 - 2 8 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product package outline dimensions (all dimensions in mm(inch).) (1) package type: so-8 0 8 1 7 r 0 . 1 5 0 ( 0 . 0 0 6 ) r0.150(0.006) 1.000(0.039) 0.300(0. 012) 0.510(0. 020) 1.350(0. 053) 1.750(0. 069) 0.100(0. 004) 0.300(0. 012) 0.900(0.035) 3.800(0.150) 4.000(0.157) 7 7 2 0 : 1 d 1. 270( 0. 050) typ 0.150(0. 006) 0.250(0. 010) 8 d 5.800( 0. 228) 6.200( 0. 244) 0. 675( 0. 027) 0. 725( 0. 029) 0.320(0. 013) 8 0. 450(0. 017) 0. 800(0. 031) 4.700(0.185) 5.100(0.201) note: eject hole , oriented hole and mold mark is optional . option 1 option 1 option 2 0.350(0.014) typ typ typ typ
AP1688 document number: ds36603 rev. 2 - 2 9 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product suggested pad layout (1) package type: so-8 grid placement courtyard z g y ex dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e (mm)/(inch) value 6.900/0.272 3.900/0.154 0.650/0.026 1.500/0.059 1.270/0.050
AP1688 document number: ds36603 rev. 2 - 2 10 of 10 www.diodes.com february 2015 ? diodes incorporated a p1688 a product line o f diodes incorporated new product important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the im plied warranties of merchantability and fitness for a particular purpose (and their equivalents under the la ws of any jurisdiction). diodes incorporated and its subsidiaries rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product descri bed herein. diodes incorporated does not assume any liability ari sing out of the application or use of this document or any product described herein; neither does diodes inco rporated convey any license under its patent or trademark rights, nor the rights of others. any customer or user of this document or products described herein in such applica tions shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability w hatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes inco rporated products for any unintended or una uthorized application, customers shall i ndemnify and hold diodes incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death a ssociated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more un ited states, international or foreign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of t his document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical com ponents in life support devices or systems without the express written approval of the chief executive offi cer of diodes incorporated. as used herein: a. life support devices or syst ems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when proper ly used in accordance with instructions for use provided in 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 devic e or system whose failure to perform can be reasonably expect ed to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifi cations of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-rel ated requirements concerning the ir products and any use of diodes incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporate d and its representatives against any damages arisi ng out of the use of diodes incorporated pr oducts in such safety-critical, life suppor t devices or systems. copyright ? 2015, diodes incorporated www.diodes.com
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