description features deliver 200ma at 3.3v output voltage with 1.8v input voltage low start-up voltage @1ma:0.8v the converter output voltage can be adjusted from 2.5v~6.0v (in 0.1v step) output voltage accuracy: 2% low temperature-drift coefficient of the output voltage: 100ppm/ o c only three external components are needed: an inductor, a schottky diode and an output filter capacitor. high power conversion efficiency: 85% low quiescent current drawn from power source: <7ua application A7530 is cmos-based pfm step-up dc-dc converter. the converter can start up by supply voltage as low as 0.8v, and capable of delivering maximum 200ma output current at 3.3v output with 1.8v input vol tage. quiescent current drawn from power source is as low as 7ua. all of these features make A7530 be suitable for the portable devices, which are supplied by a single battery for four-cell batteries. to reduce the noise caused by the switch regulator, A7530 is well considerate in circuit design and manufacture. so that the interferer to other circuits by the device is reduced greatly. the A7530 integrates stable reference circuits and trimming technology, so it can afford high precision and low temperature-drift coefficient of the output voltage. the A7530 is available in sot-23 and sot-25 package. and in sot-25 package, the device can be switch on or off easily by ce pin to minimize the standby supply current. portable source for pda, dsc, mp3 player, electronic toyu and wireless mouse power source for a single or dual-cell battery-powered equipments power source for led ordering information pin assignment advanced innovation technology corp. page 1/9 www.ait-ic.com rev 1.0 p fm s tep -u p d c -d c c onverter with high efficiency and low noice A7530 e3 sot-23 pn: A7530e3-xxy e5 sot-25 pn: A7530e5-xxy xx: output voltage 1: internal tr. driver, w/o enable circuit 2. internal tr. driver, w/enable circuit 3. external tr. driver, w/o enable circuit note y 4. external tr. driver, w/enable circuit free datasheet http://
typical application pin description package sot-23 sot-25 symbol description 1 4 vss (gnd) ground pin 2 2 v out output pin, power supply for internal circuits 3 5 lx (ext) switching pin 3 nc - 1 ce chip enable pin (active high) advanced innovation technology corp. page 2/9 www.ait-ic.com rev 1.0 A7530 p fm s tep -u p d c -d c c onverter with high efficiency and low noice free datasheet http://
absolute maximum ratings input voltage range 0.3v~+12v input voltage: vi (lx) 0.3v ~ (vout+0.3v) ce pin voltage 0.3v ~ (vout+0.3v) lx pin output current 0.7a maximum power dissipation, t=25 o c sot-23 0.15w sot-25 0.15w maximum junction temperature +150 o c storage temperature range -40 o c ~ +125 o c operating free-air temperature -20 o c ~ +80 o c lead temperature (soldering, 10s) +260 o c, 10s electrical characteristics parameter conditions min typ max unit 2.450 2.5 2.55 2.646 2.7 2.754 2.94 3.0 3.06 3.234 3.3 3.366 3.528 3.6 3.672 3.920 4.0 4.080 v 4.900 5.0 5.100 vout (output voltage) 5.880 6.0 6.120 vin (input voltage) 12 v iin (input current) iout=0ma, vin=vout*0.6 12 15 u a vstart (start-up voltage) iout=1ma, vin: 0 ->2v 0. 8 0.9 v vhold (hold-on voltage) iout=1ma, vin: 2-> 0v 0.6 0 .7 v idd (quiescent current drawn from power source) without external components, vout=vout*1.05 4 7 ua rswon (switch on resistance) 0.4 0.5 ilxleak (lx leakage current) vout=vlx=6v 0.5 ua v ceh (ce h threshold voltage) v ce : 0 -> 2v 0.6 0.9 v v cel (ce l threshold voltage) v ce : 2-> 0v 0.3 0.6 v fosc (oscillation frequency) lx on l side, vout=v out*0.96 300 350 400 khz maxdty (oscillator duty cycle) on (vlx l) side 7 0 75 80 % (efficiency) 85 % advanced innovation technology corp. page 3/9 www.ait-ic.com rev 1.0 A7530 p fm s tep -u p d c -d c c onverter with high efficiency and low noice free datasheet http://
typical characteristics advanced innovation technology corp. page 4/9 www.ait-ic.com rev 1.0 A7530 p fm s tep -u p d c -d c c onverter with high efficiency and low noice free datasheet http://
advanced innovation technology corp. page 5/9 www.ait-ic.com rev 1.0 A7530 p fm s tep -u p d c -d c c onverter with high efficiency and low noice free datasheet http://
block diagram advanced innovation technology corp. page 6/9 www.ait-ic.com rev 1.0 A7530 p fm s tep -u p d c -d c c onverter with high efficiency and low noice free datasheet http://
package information dimension in sot-23 (unit: mm) tape dimension reel dimension advanced innovation technology corp. page 7/9 www.ait-ic.com rev 1.0 A7530 p fm s tep -u p d c -d c c onverter with high efficiency and low noice free datasheet http://
dimension in sot-25 (unit: mm) tape dimension r eel dimension advanced innovation technology corp. page 8/9 www.ait-ic.com rev 1.0 A7530 p fm s tep -u p d c -d c c onverter with high efficiency and low noice free datasheet http://
important notice advanced innovation technology corp. (ait) reserves the right to make changes to any its product, specifications, to discountinue any integr ated circuit product or service without notice, and advises its customers to obtain the lat est version of relevant information to verify, before placing orders, that the information being r elied on is current. advanced innovation technology corp.'s integrated c ircuit products are not designed, intended, authorized, or warranted to be suitable f or use in life support applications, devices or systems or other critical applications. use of ait products in such applications is understood to be fully at the risk of the customer. as used herein may involve potential risks of death, personal injury, or servere propert y, or environmental damage. in order to minimize risks associated with the customer's appli cations, the customer should provide adequate design and operating safeguards. advanced innovation technology corp. assumes to no liability to customer product design or application support. ait warrants the performan ce of its products of the specifications applicable at the time of sale. advanced innovation technology corp. page 9/9 www.ait-ic.com rev 1.0 A7530 p fm s tep -u p d c -d c c onverter with high efficiency and low noice free datasheet http://
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