AP4340S document number: ds37278 rev. 4 - 2 1 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product dynamic psr accelerator description the AP4340S is an output voltage detector for primary side control system. it is a low power loss solution. it detects the output voltage and provides a periodical signal when the output voltage is lower than a certain threshold . the periodical signal can be coupled by the transformer to the primary side and provided as a n awakening signal for the main primary side controller. by fast response to secondary side voltage, the AP4340S can effectively improve the transient performance of primary side control system. AP4340S will enable a discharge circuit when it detects the output voltage is higher than a certain threshold . the AP4340S is available in sot 23 package. features ? fast detector of supply v oltages ? 3 3 khz output pulse ? no external components ? low power loss for green mode applications ? totally lead - free & fully rohs compliant (note s 1 & 2) ? halogen and antimony free. green device (note 3) pin assignments (top view) sot23 applications ? adapters/chargers for cell/cordless phones, adsl modems, mp3 and other portable apparatu s ? standby and auxiliary power supplies 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 . typical applications circuit 1 2 3 v c c g n d o u t t r 1 d 8 v o + c 5 + c 6 o u t g n d v c c i c 2 a p 4 3 4 0 s r 1 3 r 1 4 + c 1 f r 1 + c 2 l 1 f b r 5 o u t v c c n c i c 1 c b c g n d r 1 r 2 r 9 q 1 d 1 , d 2 , d 3 , d 4 l 2 r 1 1 c 4 d 7 r 8 d 6 c 3 e m c s r 1 2 r 6 d 5 r 1 0 a p 3 7 8 5 r 7 c y 1
AP4340S document number: ds37278 rev. 4 - 2 2 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product pin description s p in number pin name function 1 vcc power supply pin, connected with one end of the secondary winding and the output capacitor 2 out secondary detecting pin, connected with the other end of the secondary winding 3 gnd gnd pin, connected with secondary side gnd of the system functional block diagram v c c d e p _ r e f c o n t r o l l o g i c o u t g n d v r e f + - u v l o + - d r i v e r v r e f u v l o v r e f o s c d y n a m i c v r e f o v p + - o u t c o m p v c c d i s c h a r g e v r e f v d i s c o m p + - v c c v d i s o v p r e g u l a t o r v d d v c c 1 2 3
AP4340S document number: ds37278 rev. 4 - 2 3 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product absolute maximum ratings (note 4 ) parameter rating unit supply voltage - 0.3 to 9 v voltage at out - 40 to 7 v voltage from vcc to out - 7 to 49 v output current at out internally limited a power dissipation at t a = + 25 oc 1.4 w operating junction temperature + 150 oc storage temperature - 65 to + 150 oc lead temperature (soldering, 10 sec) + 300 oc thermal resistance (junction to case) 140 oc /w thermal resistance (junction to ambient ) 200 oc /w note 4 : stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. the se are stress 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 supply voltage 4 5.5 v t a ambient temperature range - 40 + 85 ? c electrical characteristics (@ v cc =5v, t a = + 25c , unless othe rwise specified .) symbol parameter conditions min typ max unit supply voltage ( vcc pin ) v on power - on voltage C 2.5 3.1 4.6 v i st startup current v cc =v on - 0.2v C 5 10 ? a i op operating current out pin floating, v cc =5v 10 15 20 ? a v off power - off voltage C 2 2.8 4.2 v v tri internal trigger voltage C 4.65 4.73 4.8 v output section/oscillator section duty duty cycle v cc =4.5v 5 8.5 1 2 % t osc oscillation period v cc =4.5v 25 30 35 ? s i out output maximum current v cc =4.5v 27 34 38 ma v dis discharge voltage C 5.1 5 5.35 5 .55 v i dis discharge current C 1.5 3 4.5 ma v ovp overshoot voltage for discharge C 5. 6 5. 78 5.95 v i ovp overshoot current for discharge C 120 170 240 ma note 5 : the system output voltage is 5v.
AP4340S document number: ds37278 rev. 4 - 2 4 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product operation description figure 1 . typical waveforms of AP4340S when vcc voltage is beyond power - on voltage (v on ), the AP4340S starts up. the out pin asserts a periodical pulse and oscillation period is t osc . when vcc voltage is lower than trigger voltage (v tri ), the periodical pulse in out p in is discontinued. when vcc voltage exceeds discharge voltage (v dis ), the discharge circuit will be enabled, a 1ma current will flow into vcc p in. when vcc voltage is hig her than overshoot voltage (v ovp ), AP4340S will enable a discharge circuit until the vcc voltage falls below the overshoot voltage. at the same time, the per iodical pulse in out p in will be disabled. when the vcc voltage is below power - off voltage (v off ), the AP4340S will be shut down. o u t v c c d y n a m i c v o n v t r i v o f f t o s c v o v p v t r i i v c c i d i s u v l o v d i s v d i s i o v p t o s c
AP4340S document number: ds37278 rev. 4 - 2 5 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product performance characteristics power - off voltage vs. ambient temperature power - on voltage vs . ambient temperature trigger voltage vs. ambient temperature output current vs. ambient temperature duty cycle vs . ambient temperature oscillation period vs. ambient temperature -25 0 25 50 75 100 125 150 4.0 4.2 4.4 4.6 4.8 5.0 v tri (v) ambient temperature ( o c) -25 0 25 50 75 100 125 150 0.0 0.5 1.0 1.5 2.0 2.5 3.0 v off (v) ambient temperature ( o c) -25 0 25 50 75 100 125 150 0 3 6 9 12 15 duty cycle (%) ambient temperature ( o c) -25 0 25 50 75 100 125 150 10 15 20 25 30 35 40 i out (ma) ambient temperature ( o c) -25 0 25 50 75 100 125 150 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 v on (v) ambient temperature ( o c) -25 0 25 50 75 100 125 150 0 10 20 30 40 50 t osc ( ? s) ambient temperature ( o c)
AP4340S document number: ds37278 rev. 4 - 2 6 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product performance characteristics (cont.) operating current vs. ambient temperature discharge voltage vs. ambient temperature discharge current vs . ambient temperature overshoot voltage for discharge vs. ambient temperature overshoot current for discharge vs. ambient temperature -25 0 25 50 75 100 125 150 0.0 0.5 1.0 1.5 2.0 2.5 3.0 i dis (ma) ambient temperature ( o c) -25 0 25 50 75 100 125 150 0 40 80 120 160 200 i ovp (ma) ambient temperature ( o c) -25 0 25 50 75 100 125 150 5.0 5.2 5.4 5.6 5.8 6.0 v ovp (v) ambient temperature ( o c) -25 0 25 50 75 100 125 150 8 10 12 14 16 18 i op ( ? a) ambient temperature ( o c) -25 0 25 50 75 100 125 150 4.6 4.8 5.0 5.2 5.4 5.6 v dis (v) ambient temperature ( o c)
AP4340S document number: ds37278 rev. 4 - 2 7 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product ordering information package temperature range part number marking id packing sot 23 - 40 to + 150 ? c ap 4340sn tr - g1 g ta 3000/ tape & reel marking information (top view) : logo xxx: marking id xxx a p 4 3 4 0 s 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 n : s o t 2 3 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
AP4340S document number: ds37278 rev. 4 - 2 8 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product package outline dimensions (all d imensions in mm (inch) . ) (1) package t ype: sot23 2 . 3 0 0 ( 0 . 0 9 1 ) 2 . 5 0 0 ( 0 . 0 9 8 ) 1 . 2 0 0 ( 0 . 0 4 7 ) 1 . 4 0 0 ( 0 . 0 5 5 ) 0 . 8 9 0 ( 0 . 0 3 5 ) 1 . 0 3 0 ( 0 . 0 4 1 ) 0 . 3 0 0 ( 0 . 0 1 2 ) 0 . 5 1 0 ( 0 . 0 2 0 ) 1 . 9 0 0 ( 0 . 0 7 5 ) r e f 2 . 8 0 0 ( 0 . 1 1 0 ) 3 . 0 0 0 ( 0 . 1 1 8 ) 2 . 0 3 . 0 0 . 5 0 0 ( 0 . 0 2 0 ) 0 . 7 0 0 ( 0 . 0 2 8 ) 1 . 0 5 0 ( 0 . 0 4 1 ) r e f 0 . 0 1 0 ( 0 . 0 0 0 4 ) 0 . 1 0 0 ( 0 . 0 0 4 ) 0 . 9 0 0 ( 0 . 0 3 5 ) 1 . 1 0 0 ( 0 . 0 4 3 ) 4 r 0 . 1 0 0 ( 0 . 0 0 4 ) 7 . 0 7 . 0 0 . 5 5 0 ( 0 . 0 2 2 ) r e f 0 . 2 0 0 ( 0 . 0 0 8 ) m i n 0 . 1 0 0 ( 0 . 0 0 4 ) g a u g e p l a n e 0 . 0 8 0 ( 0 . 0 0 3 ) 0 . 1 8 0 ( 0 . 0 0 7 ) r 0 . 1 0 0 ( 0 . 0 0 4 ) 0 . 0 ~ 1 0 . 0
AP4340S document number: ds37278 rev. 4 - 2 9 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of diodes incorporated new product suggested pad layout (1) package type: sot23 dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e (mm)/(inch) value 2.900/0.114 1.100/0.043 0.800/0.031 0.900/0.035 0.950/0.037 y g z y x e g r i d p l a c e m e n t c o u r t y a r d
AP4340S document number: ds37278 rev. 4 - 2 10 of 10 www.diodes.com january 2015 ? diodes incorporated AP4340S a product line of 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 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. 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 t his 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 unauthorized 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 associated 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, internatio nal 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 di odes incorporated products are specifically 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 devi ces 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 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 i ts safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulator y 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, customers 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 5 , diodes incorporated www.diodes.com
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