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ace 525 300ma high psrr, linear regulator ver 1. 3 1 d escription ace525 series is a group of positive voltage output, low power consumption, low dropout voltage regulator. ace525 can provide output value in the range of 1. 0 v~4. 4 v every 0.1v step. it also can be customized on command. ace525 includes high ac curacy voltage reference, error amplifier, current limit circuit and output driver module. ace525 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. and it uses trim ming technique to guarantee output voltage accuracy within 2%. features ? low power consumption: 2 5 ua (typ) ? low output noise (47uvrms) ? standby mode: 0.1ua ? low dropout voltage 360m v@300ma (typ.) ? high ripple rejection: 7 4 db @100hz (typ.) ? low temperature coe fficient: 100ppm/ ? excellent line regulation: 0.05%/v ? build - in c hip e nable ? output voltage range: 1. 0 v~4. 4 v (customized on command every 0.1v step) ? high accurate: 2% ? output current limit application ? power source for cellular phones and various kind of pcss ? battery p owered equipment ? power m anagement of mp3 , pda, dsc , mouse, ps2 games ? reference voltage source ? regulation after switching power absolute maximum ratings p arameter s ymbol m ax u nit max input voltage v in 8 v power dissipation sc - 70 - 5 sot - 23 - 5 dfn1*1 - 4 sot - 23 - 3 250 250 600 250 m w j unction temperature t j 125 o c storage temperature t s - 45 to 150 o c output current 300 ma ambient temperature t a - 40 to 85 o c
ace 525 300ma high psrr, linear regu lator ver 1. 3 2 note: heat sink area of pcb for dfn1x1 - 4 is recommended at least 2.5mmx4mm. exceed these limits to d amage to the device. exposure to absolute maximum rating conditions may affect device reliability. packaging type sc - 70 - 5 dfn1*1 - 4 sot - 23 - 3 sot - 23 - 5 5 4 4 3 3 1 2 3 1 2 1 2 thermal pad: v ss ordering information ace525 xx xx + h sc - 70 - 5 sot - 23 - 5 dfn1*1 - 4 sot - 23 - 3 description function 5 5 1 2 v out output pin 1 1 4 3 v dd input pin 2 2 2 1 gnd ground pin 3 3 3 ce chip enable pin 4 4 nc no connection hn : sc - 70 - 5 bn : sot - 23 - 5 in: dfn1*1 - 4 bm : sot - 23 - 3 output voltage 1.0v ..4.4v p b - free halogen - free
ace 525 300ma high psrr, linear regu lator ver 1. 3 3 bl ock diagram explanation ace525 series is a group of positive voltage output, low noise, low power consumption , low dropout voltage regulator. ace525 can provide output value in the range of 1.0v~4.5v every 0.1v step. it also can be customized on command. ace525 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver mod ule. ace525 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. and it uses trimming technique to guarantee output voltage accuracy within 2%. re commended work cond itions item min max unit input voltage range 2 6 v ambient temperature - 40 85
ace 525 300ma high psrr, linear regu lator ver 1. 3 4 electrical characteristics (test conditions: cin=1uf, cout= 1 uf,t a =25 , unless otherwise specified.) ace525 for arbitrary output voltage parameter symbol cond itions min typ max units input voltage v in 2 6 v output voltage v out >1.5v v in =set v out +1v 1ma Q iout Q 30ma v out x0.98 v out v out x 1.02 v v out <=1.5v v out C 0.03 v out v out + 0.03 maximum output current i out (max.) v in - v out =1v 300 ma dropout voltage, v out R 2.8v vdrop 1 i out =100ma 115 200 mv i out =300ma 3 60 4 20 mv line regulation v out / v in ?v out i out =40ma 2.8v Q v in Q 6v 0.05 0.2 %/v load regulation v out / i out v in =set v out +1v 1ma Q i out Q 300ma 60 100 mv supply current iss v in =set v out +1v 25 50 ua supply current (standby) istandby v in =set v out +1v vce= v ss 0.1 1.0 ua output voltage temperature coefficient v out / t?v out i out =30ma 100 ppm/ ripple rejection psrr f=100hz, ripple=0.5vp - p v in =set v out +1v 7 4 db current limit iiim 500 ma ce input voltage h vceh 1.5 v in v ce input voltage l vcel 0 0.25 v output noise e n bw=10hz~100khz 47 uvrms note: vdr o p=vin 1 - (vout2*0.98) vout2 is the output voltage when vin=vout1+1.0v and iout=300ma . vin is the input voltage at which the output voltage becomes 98% of vout1 after gradually decreasing the input voltage.
ace 525 300ma high psrr, linear regu lator ver 1. 3 5 psrr typical application circuit ace525 n ote : input capacitor (cin=1uf) and output capacitor (cout=1uf) are re commended in all application circuit. typical performance characteristics 1. output voltage vs. output current 2.output voltage vs. input voltage load regulation lin regulation vout=2.8v
ace 525 300ma high psrr, linear regu lator ver 1. 3 6 3. dropout voltage vs. output current 4.ripple rejection vs. frequency dropout psrr 5.line transient response cin=cout=1 uf iout= 10 ma vout= 2.8 v 6.l oad transient response cin=cout=1uf vin =4. 0 v vout= 2.8 v
ace 525 300ma high psrr, linear regu lator ver 1. 3 7 7.startup from ce
ace 525 300ma high psrr, linear regu lator ver 1. 3 8 packing information sc - 70 - 5 sot - 23 - 5
ace 525 300ma high psrr, linear regu lator ver 1. 3 9 packing information dfn1*1 - 4 4l stslp (1*1mm) pin #1 denti fication chamfer r0.075mm pin 1# dot by marking top view bottom view note. a dimension as below table max nom min a 0.6 0.55 0.5 side view
ace 525 300ma high psrr, linear regu lator ver 1. 3 10 packing information sot - 23 - 3
ace 525 300ma high psrr, linear regu lator ver 1. 3 11 notes ace does not assume any responsibility for use as critical 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 o r effectiveness. ace technology co., ltd. http://www.ace - ele.com/

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