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preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 1 general description the ap3410 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 sm all 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 adjustable 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 1.2a. the ap3410 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: 1.2a ? 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 applications ? post dc-dc voltage regulation ? pda and notebook computer figure 1. package types of ap3410 sot-23-5 dfn-22-6
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 2 pin configuration k package dn package (sot-23-5) (dfn-22-6) en gnd lx fb vin 1 2 34 5 figure 2. pin configurat ion of ap3410 (top view) pin description 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
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 3 functional block diagram figure 3. functional block diagram of ap3410
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 4 ordering information ap3410 - g1: green circuit type package temperature range part number marking id packing type sot-23-5 -40 to 85oc ap3410ktr-g1 ghw tape & reel dfn-22-6 -40 to 85oc ap3410dntr-g1 cj tape & reel bcd semiconductor's pb-free products, as designated with "g1" suffix in the part number, are rohs compliant and green. absolute maximum ratings (note 1) parameter symbol value unit input voltage for the mosfet switch v in 0 to 6.0 v enable input voltage v en -0.3 to v in +0.3 v lx pin switch current i lx 1.8 a power dissipation (on pcb, t a =25c) p d sot-23-5 0.4 w dfn-22-6 1.89 thermal resistance (junction to ambient, simulation) ja sot-23-5 250 oc/w dfn-22-6 53 thermal resistance (junction to case, simulation) jc sot-23-5 130 oc/w operating junction temperature t j 155 oc storage temperature t stg -55 to 150 oc operating temperature t op -40 to 85 oc esd (machine model) v mm 200 v esd (human body model) v hbm 2000 v note 1: stresses greater than those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional op eration 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. tr: tape & reel k: sot-23-5 dn: dfn-22-6
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 5 recommended operating conditions parameter symbol min max unit supply input voltage v in 2.5 5.5 v operating ambient temperature t a -40 85 oc operating junction temperature t j -40 125 oc electrical characteristics v in =v en =5v, v out =1.2v, v fb =0.6v, l=2.2 h, c in =4.7 f, c out =10 f, t a =25c, unless otherwise specified. parameters symbol condi tions min typ max unit input voltage range v in 2.5 5.5 v shutdown current i off v en =0 0.1 a active current i on v fb =0.55v 220 a regulated feedback voltage v fb 0.588 0.6 0.612 v regulated output voltage accuracy ? v out /v out v in =2.5v to 5.5v, i out =0 to 1.2a -3 3 % peak inductor current i pk 1.5 1.9 a oscillator frequency f osc v in =2.5v to 5.5v 1.2 1.5 1.8 mhz pmosfet r ds(on) r ds(on)p v in =5v 200 m ? nmosfet r ds(on) r ds(on)n v in =5v 200 m ? en high level input voltage v en_h 1.5 v en low level input voltage v en_l 0.4 v en input current i en 0.1 a soft start time t ss 400 s maximum duty cycle d max 100 % under voltage lock out threshold v uvlo rising 2.3 v falling 2.1 hysteresis 0.2 thermal shutdown t sd hysteresis=30c 155 160 c
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 6 typical performance characteristics v in =5v, t a =25c, unless otherwise noted. figure 4. efficiency vs. output current figure 5. regulated feedback voltage vs. temperature figure 6. output ripple (i out =0a) figure 7. output ripple (i out =1.2a) 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 800 s/div v out_ac 10mv/div v sw 2v/div i l 1a/div time 400ns/div
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 7 typical performance characteristics (continued) v in =5v, t a =25c, unless otherwise noted. figure 8. enable turn on (i out =1.2a) figure 9. enable turn off (i out =1.2a) figure 10. short circuit protection (i out =1.2a) figure 11. short circuit protection recovery (i out =1.2a) v out 1v/div v sw 5v/div i l 500ma/div time 200 s/div v out 1v/div v sw 5v/div i l 500ma/div time 800 s /div v en 5v/div v en 5v/div v out 1v/div v sw 5v/div i l 2a/div time 200 s/div v out 1v/div v sw 5v/div i l 2a/div time 200 s /div
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 8 typical application figure 12. typical applications of ap3410 table 1. 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
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 9 mechanical dimensions sot-23-5 unit: mm(inch) 2.820(0.111) 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) 8 0 3.100(0.122) 0.500(0.020) 0 . 1 5 0 ( 0 . 0 0 6 ) 1 . 3 0 0 ( 0 . 0 5 1 ) 0.200(0.008) 1.800(0.071) 2.000(0.079) 0 . 7 0 0 ( 0 . 0 2 8 ) r e f t y p
preliminary datasheet 1.5mhz synchronous step-down dc-dc co nverter ap3410 mar. 2013 rev. 1. 1 bcd semiconductor manufacturing limited 10 mechanical dimensions (continued) dfn-22-6 unit: mm(inch)
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing co., ltd. 800 yishan road, shanghai 200233, china tel: +021-6485-1491, fa x: +86-021-5450-0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manu facturing co., ltd., shenzhen office unit a room 1203,skyworth bldg., gaoxin ave.1.s., nanshan district shenzhen 518057, china tel: +86-0755-8660-4900, fax: +86-0755-8660-4958 taiwan office (taipei) bcd semiconductor (taiwan) company limited 3f, no.17, lane 171, sec. 2, jiu-zong rd., ne i-hu dist., taipei(114), taiwan, r.o.c tel: +886-2-2656 2808 fax: +886-2-2656-2806/26562950 taiwan office (hsinchu) bcd semiconductor (taiwan) company limited 8f, no.176, sec. 2, gong-dao 5th road, east district hsinchu city 300, taiwan, r.o.c tel: +886-3-5160181, fax: +886-3-5160181 - headquarters bcd (shanghai) micro-electronics limited no. 1600, zi xing road, shanghai zizhu scie nce-based industrial park, 200241, p. r.c. tel: +86-021-2416-2266, fax: +86-021-2416-2277 usa office bcd semiconductor corp. 48460 kato road, fremont, ca 94538, usa tel: +1-510-668-1950 fax: +1-510-668-1990 korea office bcd semiconductor limited korea office. room 101-1112, digital-empire ii, 486 sin-dong, yeongtong-gu, suwon-city, gyeonggi-do, korea tel: +82-31-695-8430 important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com bcd semiconductor manufacturing limited important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing co., ltd. 800 yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd., shenzhen office unit a room 1203, skyworth bldg., gaoxin ave.1.s., nanshan district, shenzhen, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corp. 30920 huntwood ave. hayward, ca 94544, usa tel : +1-510-324-2988 fax: +1-510-324-2788 - headquarters bcd semiconductor manufacturing limited no. 1600, zi xing road, shanghai zizhu sc ience-based industrial park, 200241, china tel: +86-21-24162266, fax: +86-21-24162277 important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com bcd semiconductor manufacturing limited

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