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ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 1 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated primary side power switcher for off - line smps description the AP3968/69/70 consists of a primary side regulation controller and a high voltage transistor, and is specially designed for off - line power supplies within 12w output power. ty pical applications include adapter for adsl and a uxiliary supplies . the AP3968/69/70 operates at pulse frequency modulation (pfm), and provides accurate constant voltage, constant current (cv/cc) regulation without requiring an opto - coupler and seco ndary control circuitry. it has internal cable compensation function for tight constant voltage regulation. the AP3968/69/70 solution has fewer component numbers, smaller size, and lower total cost. the AP3968 is packaged in so - 7. the ap3969 is avail able in p dip - 7 . the ap3970 is available in pdip - 7 and p dip - 8 packages . applications ? chargers ? adapters ? set top boxes ? auxiliary supplies ? dvd ? led driver features ? primary s ide c ontrol for e liminating o pto - coupler and s econdary cv/cc c ontrol c ircuitry ? built - in npn transistor with 700v cbo ? low start - up current: 0. 2 ? a (typ.) ? internal o utput c able v oltage d rop c ompensation ? random frequency modulation for low emi ? short circuit protection ? low total cost solution ? output power range (note 1) : AP3968 for 5 w adapter ap3969 for 7.5 w adapter ap3970 for 12w adapter ? totally lead - free & fully rohs compliant (note 2 & 3) ? halogen and antimony fre e. green device (note 4) note s : 1 . typical continuous power in a non - ventilated enclosed adapter measured at + 50 c ambient. 2 . no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. 3 . see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporateds definitions of halogen - and antimony - free, "green" and lead - free. 4 . halogen - and antimony - free "green products are defined as those which contain < 900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. pin assignments ( top view) s o - 7 ( m package) pdip - 7 ( p7 package) p dip - 8 ( p package) for ap396 8 for ap396 9/70 for ap39 70 1 2 3 4 7 6 5 cpc fb vcc cs c c gnd cpc fb vcc cs c c gnd 1 2 3 4 7 6 5 1 2 3 4 8 7 6 5 cpc fb vcc cs c c gnd nc
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 2 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated typical applications circuit typical application of ap3969 (9v/800ma) item function qty item function qty c1 10.0 ? f/400v, electrolytic 1 u1 ap3969 1 c2 4.7 ? f/400v, electrolytic 1 r 1 11 ? , 2w 1 c3 3.3 ? f/50v, electrolytic 1 r3 3.3m ? /0.25w 1 c5 1nf/1kv, ceramic 1 r5 3.9 ? , 0805 1 c8 0. 01 ? f, 0 805 1 r6 150 k ? , 1206 1 c10 1nf/250vac, y1 capacitor 1 r7 1 ? , 1206 1 c11 1nf, 0805 1 r8 20 k ? , 0805 1 c12, c13 470 ? f/16v 2 r9 13 k ? , 0805 1 d1 to d6 1n4007, rectifier diode 6 r10 360 ? , 0805 1 d12 mbr 3100 1 r11 27 ? , 0805 1 l1 470 ? h, inductor 1 r12 1.2 k ? , 0805 1 l2 bead, 0805 1 t1 ee16 core, pc40, transformer 1 + j 1 a c 9 0 - 2 6 4 v d 1 t o d 4 c 2 r 1 + c 1 d 6 l 1 t 1 f b c v c c c s + c 3 u 1 c p c c 8 r 5 c 1 1 n p n s n f b d 5 c 5 r 6 v o + v o - c 1 0 g n d l 2 d 1 2 + c 1 2 r 1 1 r 1 2 c 1 3 + r 1 0 r 3 r 8 r 9 r 7
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 3 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated pin description s p in number pin name function so - 7/ p dip - 7 p dip - 8 1 1 cpc this pin connects a capacitor to gnd for output cable compensation 2 2 fb the voltage feedback from auxiliary winding 3 3 vcc this pin receives rectified voltage fro m the auxiliary winding of the transformer 4 4 cs current sense for primary side of transformer 5, 6 5, 6 c this pin is connected with an internal power bjts collector C 7 nc not connected 7 8 gnd this pin is the signal reference ground functional block diagram a (b) a for so - 7/ p dip - 7 b for p dip - 8 r e g u l a t o r & b i a s o v p & o c k p 0 . 1 v v f b p f m t o n s u v l o c o m p e a u v l o c v _ c t r l p f m d r i v e r r q s r q s t o n s c c _ c t r l f b c s c p c v c c c g n d c a b l e d r o p c o m p e n s a t i o n c o n s t a n t v o l t a g e p e a k c u r r e n t c o n t r o l & l e b c o n s t a n t c u r r e n t c o n t r o l t o n s e c d e t e c t o r l i n e v o l t a g e c o m p e n s a t i o n a u d i b l e n o i s e s u p p r e s s i o n b u f f e r 1 ( 1 ) 2 ( 2 ) 3 ( 3 ) 4 ( 4 ) 5 , 6 ( 5 , 6 ) 7 ( 8 )
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 4 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated absolute maximum ratings (note 5 ) symbol parameter rating unit v cc supply voltage - 0.3 to 22 v v fb fb input voltage - 1 to 10 v v cbo collector - emitter voltage 700 v C collector dc current AP3968/69 1.5 a ap3970 4 t j operating junction temperature + 150 c t stg storage temperature - 65 to + 150 c t lead lead temperature (soldering, 10 sec) + 300 c C esd ( machine model ) 200 v C esd ( human body model ) 2000 v p d total power dissipation ap39 68 0.7 w ap39 69 0.9 ap39 70 1.1 note 5 : 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 conditions is not implied. exposure to absolute maximum ratings for extended periods may affect device reliability. recommended operating conditions sym bol parameter min max unit v cc supply voltage C op operating temperature range - 40 + 85 c f (max) maximum operating frequency C thermal impedance symbol parameter value unit ja junction to ambient AP3968 100 c /w ap3969 8 0 ap3970 65 jc junction to case AP3968 50 ap3969 40 ap3970 35
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 5 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated electrical characteristics (@ v cc = 1 5v, t j = + 25c , unless othe rwise specified .) symbol parameters conditions min typ max unit uvlo section v on turn - on voltag e C 13 15 1 7 v v o ff turn - off voltage no drive current 4.5 5. 3 6. 3 v standby current section i st start - up current v cc =v on - 0.5 v C 0.2 0.6 a i cc operating current C 320 435 550 feedback input section v fb fb threshold voltage C 4.23 4.3 4.37 v i f b fb pin input current v fb = 4 v 1.5 3.5 5.5 a power transistor section v ce(sat) collector - emitter saturation voltage ap39 6 8 /6 9: i c =0.5a ap3 970 : i c =1a C C 0.3 v h fe dc current gain ap39 6 8 / 6 9 14 17 C C ap3 970 17 26 C C i ceo leakage curre nt C C C 60 n a over temperature protection t shdn shutdown temperature C + 125 + 160 C c C temperature hysteresis C C + 40 C c
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 6 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated performance characteristics turn - on voltage vs. ambient temperature turn - off voltage vs. ambient temperature operating current vs. ambient temperature -40 -20 0 20 40 60 80 100 120 13.0 13.5 14.0 14.5 15.0 15.5 16.0 16.5 17.0 turn-on voltage (v) ambient temperature ( o c) 125 -40 -20 0 20 40 60 80 100 120 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 turn-off voltage (v) ambient temperature ( o c) 125 -40 -20 0 20 40 60 80 100 120 300 350 400 450 500 550 600 operating current ( ? a) ambient temperature ( o c) 125
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 7 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated o peration description figure 1 . simplified flyback converter controlled by AP3968 /69/70 figure 1 illustrates a simplified flyback converter controlled by AP3968/69/ 70 . constant primary peak current the primary current ip(t) is sensed by a current sense resistor r cs as shown in figure 1 . the current rises up linearly at a rate of: (1) figure 2 . primary current waveform as illustrated in figure 2 , when the current ip(t) rises up to ipk, the switch q1 turns off. the constant peak current is given by: (2) the energy stored in the magnetizing inductance l m each cycle is therefore: (3) so the power transferring from input to output is given by: (4) m l ) t ( vg dt ) t ( dip ? 2 m ipk l 2 1 eg ? ? ? sw 2 m f ipk l 2 1 p ? ? ? ? i p 0 a s e e e q u a t i o n 2 + c 1 + c o v o d 1 r f b 1 r f b 2 r c s c f b c s g n d a p 3 9 6 8 / 6 9 / 7 0 n s n a u x n p i o u t v s v a u x v i n l m c p c c c p c q 1 rcs vcs ipk ?
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 8 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated o peration description ( c ont.) where f sw is the switching frequency. when the peak current ipk is constant, the output power depends on the switching frequency f sw . constant voltage operation the AP3968/69/70 captures the auxiliary winding feedback voltage at fb pin and operates in cons tant - voltage (cv) mode to regulate the output voltage. assuming the secondary winding is master, the auxiliary winding is slave during the d1 on - time. the auxiliary voltage is given by: (5) where v d is the diode forward drop vo ltage, n aux is the turns of auxiliary winding, and n s is the turns of secondary winding. figure 3 . auxiliary voltage waveform the output voltage is different from the secondary voltage in a diode forward drop voltage v d whi ch depends on the current. if the secondary voltage is always detected at a constant secondary current, the difference between the output voltage and the secondary volta ge will be a fixed v d . the voltage detection point is portion of tons after d1 is turn e d on. the cv loop control function of AP3968/69/70 then generates a d1 off - time to regulate the output voltage. constant current operation the AP3968/69/70 is designed to work in constant current (cc) mode. figure 4 shows the secondary current wav eforms. figure 4 . secondary current waveform in cc operation, the cc loop control function of AP3968/69/ 70 will keep a fixed proportion between d1 on - time tons and d1 off - time toffs by discharging or charging the built - i n capacitance connected. this fixed proportion is (6) the relation between the output constant - current and secondary peak current ipks is given by: (7) s e e e q u a t i o n 5 v a u x 0 v p o r t i o n o f t o n s t o n s toffs tons tons ipks 2 1 iout ? ? ? ? 3 4 toffs tons ? i s 0 a s e e e q u a t i o n 8 t o n s t o f f s i o u t ? ? d s aux aux v vo n n v ? ? ?
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 9 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated o peration description ( c ont.) at the instant o f d1 turn - on, the primary current transfers to the secondary at an amplitude of: (8) thus the output constant current is given by: (9) leading edge blanking (leb) when the power switch is turned on , a turn - on spike on the output pulse rising edge will occur on the sense - resistor. to avoid false termination of the switching pulse, a typical 500ns leading edge blanking is built in. during this blanking period, the current sense compar ator is disabled and the gate driver cannot be s witched off. the built - in le b in AP3968/69/70 has shorter delay time from current sense terminal to output pulse than those ic solutions adopting external rc filter as leb. built - in cable compensation the ap396 8/69/70 has built - in fixed voltage of 0.35v typical to compensate the drop of output cable when the load is changed from zero to full load. a typical 0.01 ? f external capacitor connected to the cpc pin is used to smooth voltage signal for cable compensation. over temperature protection the AP3968/69/70 has internal thermal sensing circuit to shut down the pfm driver output when the die temperature reac hes + 160 oc typical. when the die temperature drops about 40 oc , the ic will recover automatically to normal operation. ordering information diodes ics pb - free products with "g1" suffix in the part number, are rohs complia nt and green . package temperature range part number marking id packing so - 7 - 40 c to + 85 c ap39 68 mtr - g1 ap 39 6 8 m - g1 4000/ tape & reel p dip - 7 ap39 69 p7 - g1 ap39 69 p7 - g1 50/ tube ap39 70 p7 - g1 ap39 70 p7 - g1 50/ tube p dip - 8 ap3970p - g1 ap3970p - g1 50/ tube ipk n n 7 2 iout s p ? ? ? a p 3 9 x x x x x x - x x p a c k i n g p a c k a g e t r : t a p e & r e e l m : s o - 7 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 p r o d u c t v e r s i o n 6 8 : a p 3 9 6 8 6 9 : a p 3 9 6 9 7 0 : a p 3 9 7 0 p 7 : p d i p - 7 b l a n k : t u b e p : p d i p - 8 ipk n n ipks s p ? ?
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 10 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated marking information first and second lines: logo and marking id third line: date code y: year ww: work week of molding a: assembly house code xx: 7 th and 8 th digits of batch no. first line: logo and marking id second line: date code y: year ww: work week of molding a: assembly house code xx: 7 th and 8 th digits of batch no.
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 11 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated package outline dimensions (all d imensions in m m (inch) . ) (1) package t ype: so - 7 3 . 8 0 0 ( 0 . 1 5 0 ) 4 . 0 0 0 ( 0 . 1 5 7 ) 1 . 2 7 0 ( 0 . 0 5 0 ) t y p 4 . 7 0 0 ( 0 . 1 8 5 ) 5 . 1 0 0 ( 0 . 2 0 1 ) 0 . 3 3 0 ( 0 . 0 1 3 ) 0 . 5 1 0 ( 0 . 0 2 0 ) 0 . 1 9 0 ( 0 . 0 0 7 ) 0 . 2 5 0 ( 0 . 0 1 0 ) 0 . 1 0 0 ( 0 . 0 0 4 ) 0 . 2 5 0 ( 0 . 0 1 0 ) 1 . 3 5 0 ( 0 . 0 5 3 ) 1 . 7 5 0 ( 0 . 0 6 9 ) 0 . 4 5 0 ( 0 . 0 1 7 ) 0 . 8 0 0 ( 0 . 0 3 1 ) 8 0 5 . 8 0 0 ( 0 . 2 2 8 ) 6 . 2 0 0 ( 0 . 2 4 4 ) 2 . 5 4 ( 0 . 1 0 0 ) t y p 1 . 2 5 0 ( 0 . 0 4 9 ) 1 . 5 0 0 ( 0 . 0 5 9 ) n o t e : e j e c t h o l e , o r i e n t e d h o l e a n d m o l d m a r k i s o p t i o n a l .
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 12 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated package outline dimensions ( c ont.) (all d imensions in mm (inch) . ) (2) package t ype: pdip - 7 8 . 4 0 0 ( 0 . 3 3 1 ) 9 . 0 0 0 ( 0 . 3 5 4 ) 0 . 2 0 4 ( 0 . 0 0 8 ) 0 . 3 6 0 ( 0 . 0 1 4 ) 7 . 3 2 0 ( 0 . 2 8 8 ) 9 . 0 0 0 ( 0 . 3 5 4 ) 9 . 4 0 0 ( 0 . 3 7 0 ) 3 . 7 1 0 ( 0 . 1 4 6 ) 4 . 3 1 0 ( 0 . 1 7 0 ) 3 . 0 0 0 ( 0 . 1 1 8 ) 3 . 6 0 0 ( 0 . 1 4 2 ) 2 . 5 4 0 ( 0 . 1 0 0 ) b s c 6 . 2 0 0 ( 0 . 2 4 4 ) 6 . 6 0 0 ( 0 . 2 6 0 ) 3 . 2 0 0 ( 0 . 1 2 6 ) 3 . 6 0 0 ( 0 . 1 4 2 ) 0 . 5 1 0 ( 0 . 0 2 0 ) m i n 1 . 5 2 4 ( 0 . 0 6 0 ) b s c n o t e : e j e c t h o l e , o r i e n t e d h o l e a n d m o l d m a r k i s o p t i o n a l . 0 . 3 8 0 ( 0 . 0 1 5 ) 0 . 5 7 0 ( 0 . 0 2 2 ) 7 . 9 2 0 ( 0 . 3 1 2 )
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 13 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated package outline dimensions ( c on t.) (all d imensions in mm (inch) . ) (3) package t ype: pdip - 8 4 6 r 0 . 7 5 0 ( 0 . 0 3 0 ) 0 . 2 5 4 ( 0 . 0 1 0 ) t y p 0 . 1 3 0 ( 0 . 0 0 5 ) m i n 8 . 2 0 0 ( 0 . 3 2 3 ) 9 . 4 0 0 ( 0 . 3 7 0 ) 0 . 2 0 4 ( 0 . 0 0 8 ) 0 . 3 6 0 ( 0 . 0 1 4 ) 7 . 6 2 0 ( 0 . 3 0 0 ) t y p 4 6 5 0 . 7 0 0 ( 0 . 0 2 8 ) 9 . 0 0 0 ( 0 . 3 5 4 ) 9 . 6 0 0 ( 0 . 3 7 8 ) 3 . 7 1 0 ( 0 . 1 4 6 ) 4 . 3 1 0 ( 0 . 1 7 0 ) 3 . 0 0 0 ( 0 . 1 1 8 ) 3 . 6 0 0 ( 0 . 1 4 2 ) 0 . 3 6 0 ( 0 . 0 1 4 ) 0 . 5 6 0 ( 0 . 0 2 2 ) 2 . 5 4 0 ( 0 . 1 0 0 ) t y p 6 . 2 0 0 ( 0 . 2 4 4 ) 6 . 6 0 0 ( 0 . 2 6 0 ) 3 . 2 0 0 ( 0 . 1 2 6 ) 3 . 6 0 0 ( 0 . 1 4 2 ) 0 . 5 1 0 ( 0 . 0 2 0 ) m i n 3 . 0 0 0 ( 0 . 1 1 8 ) d e p t h 0 . 1 0 0 ( 0 . 0 0 4 ) 0 . 2 0 0 ( 0 . 0 0 8 ) 1 . 5 2 4 ( 0 . 0 6 0 ) t y p n o t e : e j e c t h o l e , o r i e n t e d h o l e a n d m o l d m a r k i s o p t i o n a l .
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 14 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 a product line of diodes incorporated suggested pad l ayout (1) package t ype: so - 7 dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e (mm)/(inch) e1 (mm)/(inch) value 6.900/0.272 3.900/0.154 0.650/0.026 1.500/0.059 1.270/0.050 2.540/0.100 z g e 1 e x y
ap3 968/69/70 document numbe r: ds 36759 rev. 2 - 2 15 of 15 www.diodes.com december 2013 ? diodes incorporated ap39 68 / 6 9 / 7 0 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 changes without further notice to this document and any product described herein. di odes 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 unauthor ized sales channel. should customers purchase or use diodes incorporated products for any unintended or un authorized application, customers shall indemnify 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 associate d with such unintended or unauthorized application. 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 document 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 specifically not authorized for use as critical components in life support devices or system s without the express written approval of the chief executive officer of diodes incorporated. as used herein: a. life s upport devices or systems 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 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 comp onent in a life support device or system whose failure to perform can be reasonably expected 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 th e safety and regulatory ramifications of their life support devices 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 incorporate d 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, customers must fully indemnify diodes incorpora ted and its re presentatives 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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