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? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE502 ??????????????????????? technology 400ma cmos low dropout voltage low consumption regulator ver 1.2 1 ? description ACE502 series is a group of positive voltage output, low power consumption, low dropout voltage, three terminal regulator. it can provide 200ma output current when input / output voltage differential drops to 470mv vout=2.0v the very low power consumption of ACE502 iq=7ua can greatly improve natural life of batteries. ACE502 can provide output value in the range of 1.5v~6.0v in 0.1v steps. it also can customized on command. ACE502 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE502 has well load transient response and good temperature characteristic, which can assure the stability of chip and power system. and it uses trimming technique to guarantee output voltage accuracy within 2%. ACE502 is available in sot-89-3 sot-23-3 sot-23-5 packages which is lead free it also can available in these packages with lead. features ? low power consumption: 7ua (typ) ? maximum output current: 400ma ? small dropout voltage 250mv@100ma (vout=2.0v) / 470mv@200ma (vout=2.0v) ? input voltage range: 2.0v~10v ? output voltage range: 1.5v~6.0v (customized on command in 0.1v steps) ? high accurate: 2% ( 1% customized) ? output current limit application ? battery powered equipment ? power management of mp3. pda. dsc. mouse. ps2 games ? reference voltage source ? regulation after switching power typical performance characteristic: a ce50218am+ dropout voltage vin (v)
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 2 absolute maximum ratings parameter symbol max unit max input voltage v in 10 v power dissipation sot-23-3 sot-23-5 sot-89-3 0.15 0.25 0.5 w junction temperature t j 125 o c storage temperature t s - 45 to 150 o c ambient temperature t a -40 ~85 o c packaging type sot-89-3 sot-23-3 sot-23-5 3 5 4 1 2 3 1 2 1 2 3 pin sot-89-3 sot-23-3 sot-23-5(a) sot-23-5(b) function v in 2 3 1 3 supply voltage input v ss 1 1 2 2 ground ce 3 4 enable pin nc 4 5 no connect v out 3 2 5 1 output voltage ordering information selection guide ACE502 xx xx + h pb - free am : sot-89-3 bm: sot-23-3 bna: sot-23-5 bnb: sot-23-5 output voltage ? 1.5v/2.2v?..6.0v halogen - free
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 3 block diagram recommended work conditions item min recommended max unit input voltage range 8 v ambient temperature -40 +125 electrical characteristics (test conditions: cin=1uf, cout=1uf,t a =25 , unless otherwise specified.) ACE502-1.8v parameter symbol conditions min typ max units input voltage v in 8 v output voltage v out 1.764 1.8 1.53 v maximum output current i out (max.) v in =v out +1.0v,v out >1.8 v * 0.95 400 ma i out =100ma 300 400 input-output voltage differential dropout voltage i out =200ma 600 700 mv line regulation v out / v in ?v out i out =40ma 2 Q v in Q 8a 0.2 0.3 %/v load regulation v out v in =2.8v 1ma Q i out Q 100ma 20 40 ma quiescent current iq v in =v out +1v 7 10 ua output noise noise f=10hz to 100khz, c out =1 f 40 uvrms ripple rejection psrr f=100hz,i out =40ma, c out =1 f 60 db output voltage temperature coefficient v out / t?v out i out =10ma 50 ppm/
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 4 ACE502-2.0v parameter symbol conditions min typ max units input voltage v in 8 v output voltage v out v in =v out +1.0v,i out =40ma 1.96 2.0 2.04 v maximum output current i out (max.) v in =v out +1.0v,v out >2.0 * 0.95 400 ma i out =100ma 250 400 input-output voltage differential dropout voltage i out =200ma 470 600 mv line regulation v out / v in ?v out i out =40ma 2.2 Q v in Q 8a 0.2 0.3 %/v load regulation v out v in =3.0v 1ma Q i out Q 100ma 20 40 ma quiescent current iq v in =v out +1v 7 10 ua output noise noise f=10hz to 100khz, c out =1 f 40 uvrms ripple rejection psrr f=100hz,i out =40ma, c out =1 f 60 db output voltage temperature coefficient v out / t?v out 50 ppm/ ACE502-3.0v parameter symbol conditions min typ max units input voltage v in 8 v output voltage v out v in =v out +1.0v,i out =40ma 2.94 3.0 3.06 v maximum output current i out (max.) v in =v out +1.0v,v out >3.0 * 0.95 400 ma i out =100ma 200 400 input-output voltage differential dropout voltage i out =200ma 400 600 mv line regulation v out / v in ?v out i out =40ma 3.2 Q v in Q 8a 0.2 0.3 %/v load regulation v out v in =4.0v 1ma Q i out Q 100ma 20 40 ma quiescent current iq v in =v out +1v 7 10 ua output noise noise f=10hz to 100khz, c out =1 f 40 uvrms ripple rejection psrr f=100hz,i out =40ma, c out =1 f 60 db output voltage temperature coefficient v out / t?v out 50 ppm/
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 5 ACE502-3.3v parameter symbol conditions min typ max units input voltage v in 8 v output voltage v out v in =v out +1.0v,i out =40ma 3.234 3.3 3.366 v maximum output current i out (max.) v in =v out +1.0v,v out >3.3 * 0.95 400 ma i out =100ma 200 400 input-output voltage differential dropout voltage i out =200ma 400 600 mv line regulation v out / v in ?v out i out =40ma 3.5 Q v in Q 8a 0.2 0.3 %/v load regulation v out v in =4.3v 1ma Q i out Q 100ma 20 40 ma quiescent current iq v in =v out +1v 7 10 ua output noise noise f=10hz to 100khz, c out =1 f 40 uvrms ripple rejection psrr f=100hz,i out =40ma, c out =1 f 60 db output voltage temperature coefficient v out / t?v out 50 ppm/ typical application circuit ACE502 vin vin vout vout gnd + 1uf + 1uf cin cout application hints: note 1:input capacitor (cin=1uf) is recommended in all application circuit. tantalum capacitor is recommended. note 2:output capacitor (cout =1uf) is recommended in all application to assure the stability of circuit. tantalum capacitor is recommended. ? explanation ACE502 is a series of low dropout voltage and low power consumption three pins regulator. its application circuit is very simple, which only needs two outside capacitors. it is composed of these modules: high accuracy voltage reference, current limit circuit, error amplifier, output driver and power transistor. current limit module can keep chip and power system away from danger when load current is more than 400ma. ACE502 uses trimming technique to assure the accuracy of output value within2%, at the same time, temperature compensated is elaborately considered in this chip, which makes ACE502 ?s temperature coefficient within 50ppm/ .
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 6 typical performance characteristics 1. load regulation v out =1.8v load regulation (v in =2.8v) v out =2v load regulation (v in =3v) output voltage vs. output current output voltage vs. output current v out =1.8v v out =2v i out (ma) i out (ma) v out =3.3v load regulation (v in =4.3v) v out =5v load regulation (v in =6v) output voltage vs. output current output voltage vs. output current v out =3.3v v out =5v i out (ma) i out (ma) 2. line regulation v out =1.8v line regulation (i out =40ma) v out =2.0v line regulation (i out =40ma) line regulation (v out =1.8v) line regulation (v out =2v) v in (v) v in (v) ? ?
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 7 v out =3.3v line regulation (i out =40ma) v out =5.0v line regulation (i out =40ma) line regulation (v out =3.3v) line regulation (v out =5v) v in (v) v in (v) 3. input voltage transient response v out =1.8v (i out =10ma) v out =2.0v (i out =10ma) v out =3.3v (i out =10ma) v out =5.0v (i out =10ma) ?
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 8 4. load transient response v out =3.3v (v in =4.3v) v out =5.0v (v in =6v) 5. ripple rejection ripple rejection c out =1uf i out =40ma ? ?
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 9 packing information sot-89-3
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 10 packing information sot-23-3
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 11 packing information sot-23-5
? ??????????????????????????????????????????????????????????????? ???????????????????????? ACE502 ??????????????????????? technology 4 00ma cmos low dropout voltage low consumption regulator ver 1.2 12 notes ace does not assume any responsibility for use as cr itical components in life support devices or systems without the express written approval of the president and general counsel of ace electronics co., ltd. as sued herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and shoes failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. ace technology co., ltd. http://www.ace-ele.com/

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