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AP3417C document number: ds36516 rev. 1 - 0 1 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated 1.5mhz synchronous step-down dc-dc converter description the AP3417C is a high efficiency step-down dc-dc voltage converter. the chip operation is optimized by peak-current mode architecture with built-in synchronous power mosfet switchers. the oscillator and timing capacitors are all built-in providing an internal switching frequency of 1.5mhz that allows the use of small surface mount inductors and capacitors for portable product implementations. integrated soft start (ss), under voltage lock out (uvlo), thermal shutdown detection (tsd) and short circuit protection are designed to provide reliable product applications. the device is available in adjust able output voltage version ranging from 0.6v to 0.9v in when input voltage range is from 2.5v to 5.5v, and is able to deliver up to 1a. it is also available in fixed voltage versions of 1.2v, 1.8v and 3.3v without external feedback resistance. the AP3417C is available in sot-23-5 and dfn-22-6 packages. features ? high efficiency buck power converter ? wide input voltage range: 2.5v to 5.5v ? adjustable output voltage: 0.6v to 0.9v in ? low r ds(on) internal switches:200m ? (v in = 5v) ? built-in power switches for synchronous rectification with high efficiency ? output current: 1.0a ? feedback voltage: 600mv ? 1.5mhz constant frequency operation ? thermal shutdown protection ? low dropout operation at 100% duty cycle ? no schottky diode required ? input over voltage protection ? output over voltage protection ? over current protection pin assignments k package dn package (sot-23-5) (dfn-22-6) en gnd lx fb vin 1 2 34 5 applications ? post dc-dc voltage regulation ? pda and notebook computer typical applications circuit for adj version
AP3417C document number: ds36516 rev. 1 - 0 2 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated typical applications circuit (cont.) AP3417C for fixed versions component guide v out (v) r1 (k ? ) r2 (k ? ) l (h) 3.3 450 100 2.2 2.5 320 100 2.2 1.8 200 100 2.2 1.2 100 100 2.2 1.0 66 100 2.2 pin descriptions pin number pin name function sot-23-5 dfn-22-6 1 2 en chip enable pin. active high 2 5 gnd ground pin 3 4 lx switch output pin 4 3 vin power supply 5 6 fb feedback voltage of output 1 nc no internal connection
AP3417C document number: ds36516 rev. 1 - 0 3 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated functional block diagram over - current comparator bias generator saw-tooth generator oscillator soft start bandgap reference current sensing control logic buffer & dead time control logic + reverse inductor current comparator over voltage comparator modulator error amplifier - + - + - + - + gnd en fb lx 1(2) vin 4(3) 3(4) 2(5) 5(6) a(b) a for sot-23-5 b for dfn-22-6 - + iovp comparator absolute maximum ratings (note 1) symbol parameter rating unit v in input voltage for the mosfet switch 0 to 6.0 v v en enable input voltage -0.3 to v in +0.3 v i lx lx pin switch current 1.8 a p d power dissipation (on pcb, t a = +25c) sot-23-5 0.4 w dfn-22-6 1.89 ja thermal resistance (junction to ambient, simulation) sot-23-5 250 c/w dfn-22-6 53 jc thermal resistance (junction to ca se, simulation) sot-23-5 130 c/w t j operating junction temperature 155 c t stg storage temperature -55 to +150 c t op operating temperature -40 to +85 c v mm esd (machine model) 200 v v hbm esd (human body model) 2000 v note: 1. stresses greater than those listed under ?absolute ma ximum ratings? may cause permanent damage to the device. these ar e stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ?recommended operating co nditions? is not implied. exposure to ?absolute maximum ratings? for extended periods may affect device reliability.
AP3417C document number: ds36516 rev. 1 - 0 4 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated recommended operating conditions symbol parameter min max unit v in supply input voltage 2.5 5.5 v t a operating ambient temperature -40 85 oc t j operating junction temperature -40 125 oc electrical characteristics (@v in = v en = 5v, v out = 1.2v, v fb = 0.6v, l = 2.2h, c in = 4.7f, c out = 10f, t a = +25c, unless otherwise specified.) symbol parameters conditions min typ max unit v in input voltage range 2.5 5.5 v i off shutdown current v en = 0 0.1 a i on active current v fb = 0.55v 220 a v fb regulated feedback voltage for adjustable output voltage 0.588 0.6 0.612 v v out output voltage fixed output 1.2v 1.176 1.2 1.224 v fixed output 1.8v 1.764 1.8 1.836 fixed output 3.3v 3.234 3.3 3.366 ? v out /v out regulated output voltage accuracy v in = 2.5v to 5.5v, i out = 0 to 1.0a -3 3 % i pk peak inductor current 1.5 1.9 a f osc oscillator frequency v in = 2.5v to 5.5v 1.2 1.5 1.8 mhz r ds(on)p pmosfet r ds(on) v in = 5v 200 m ? r ds(on)n nmosfet r ds(on) v in = 5v 200 m ? v en_h en high level input voltage 1.5 v v en_l en low level input voltage 0.4 v i en en input current 0.1 a t ss soft start time 400 s d max maximum duty cycle 100 % v uvlo under voltage lock out threshold rising 2.3 v falling 2.1 hysteresis 0.2 t sd thermal shutdown hysteresis = 30c 155 160 c
AP3417C document number: ds36516 rev. 1 - 0 5 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated performance characteristics (@v in = 5v, t a = +25c, unless otherwise specified.) efficiency vs. output current regulated feedback voltage vs. temperature output ripple (i out =0a) output ripple (i out =1a) enable turn on (i out =1a) enable turn off (i out =1a) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 40 45 50 55 60 65 70 75 80 85 90 95 100 output current (a) efficiency (%) v in =5.0v v out =1.0v v out =1.2v v out =1.8v v out =2.5v v out =3.3v -40 -20 0 20 40 60 80 100 120 140 0.50 0.52 0.54 0.56 0.58 0.60 0.62 0.64 0.66 0.68 0.70 temperature ( o c) regulated feedback voltage (v) v in =5.0v v out_ac 10mv/div v sw 2v/div i l 500ma/div time 800s/div v out_ac 10mv/div v sw 2v/div i l 1a/div time 400ns/div v out 1v/div v sw 5v/div i l 500ma/div time 200s/div v out 1v/div v sw 5v/div i l 500ma/div time 800s /div v en 5v/div v en 5v/div
AP3417C document number: ds36516 rev. 1 - 0 6 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated performance characteristics (cont.) (@v in = 5v, t a = +25c, unless otherwise specified.) short circuit protection (i out =1a) short circuit protection recovery (i out =1a) ordering information for adj version AP3417C - g1: green circuit type for fixed versions AP3417C - g1: green circuit type package temperature range part number marking id packing type sot-23-5 -40 to 85oc AP3417Cktr-g1 g4i tape & reel AP3417Ck-1.2trg1 g4u tape & reel AP3417Ck-1.8trg1 g4v tape & reel AP3417Ck-3.3trg1 g4w tape & reel dfn-22-6 -40 to 85oc AP3417Cdntr-g1 bh tape & reel AP3417Cdn-1.2trg1 bl tape & reel AP3417Cdn-1.8trg1 bm tape & reel AP3417Cdn-3.3trg1 bn tape & reel bcd semiconductor's pb-free products, as designated with "g1" suffix in the part number, are rohs compliant and green. v out 1v/div v sw 5v/div i l 2a/div time 200s/div v out 1v/div v sw 5v/div i l 2a/div time 200 s /div tr: tape & reel package k: sot-23-5 dn: dfn - 2 2 - 6 tr: tape & reel package k: sot-23-5 dn: dfn - 2 2 - 6 1.2: fixed output 1.2v 1.8: fixed output 1.8v 3.3: fixed output 3.3v
AP3417C document number: ds36516 rev. 1 - 0 7 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated package outline dimensions (all dimensions in mm(inch).) sot-23-5 2.820(0.111) 2 . 6 5 0 ( 0 . 1 0 4 ) 1 . 5 0 0 ( 0 . 0 5 9 ) 0 . 0 0 0 ( 0 . 0 0 0 ) 0.300(0.012) 0.950(0.037) 0 . 9 0 0 ( 0 . 0 3 5 ) 0.100(0.004) 0.200(0.008) 0 . 3 0 0 ( 0 . 0 1 2 ) 8 0 3.100(0.122) 1 . 7 0 0 ( 0 . 0 6 7 ) 3 . 0 0 0 ( 0 . 1 1 8 ) 0.500(0.020) 0 . 1 5 0 ( 0 . 0 0 6 ) 1 . 3 0 0 ( 0 . 0 5 1 ) 0.200(0.008) 0 . 6 0 0 ( 0 . 0 2 4 ) 1.800(0.071) 2.000(0.079) 0 . 7 0 0 ( 0 . 0 2 8 ) r e f t y p 1 . 4 5 0 ( 0 . 0 5 7 ) m a x
AP3417C document number: ds36516 rev. 1 - 0 8 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated package outline dimensions (cont.) (all dimensions in mm(inch).) dfn-22-6
AP3417C document number: ds36516 rev. 1 - 0 9 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated suggested pad layout sot-23-5 e2 e1 y x g z dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e1 (mm)/(inch) e2 (mm)/(inch) value 3.600/0.142 1.600/0.063 0.700/0.028 1.000/0.039 0.950/0.037 1.900/0.075
AP3417C document number: ds36516 rev. 1 - 0 10 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f diodes incorporated suggested pad layout (cont.) dfn-22-6 dimensions y (mm)/(inch) x1 (mm)/(inch) y1=e (mm)/(inch) x2 (mm)/(inch) y2 (mm)/(inch) value 2.400/0.094 0.300/0.012 0.500/0.020 1.600/0.063 1.000/0.039
AP3417C document number: ds36516 rev. 1 - 0 11 of 11 www.diodes.com september 2013 ? diodes incorporated a p3417c preliminary datasheet a product line o f 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 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 incorporated 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 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 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 ? 2013, diodes incorporated www.diodes.com

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