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99.11.11 cmos multi-ldos for rf unit R5320G series rev.1.13 - 1 - n outline the R5320G series are multi voltage regulator ics with high output voltage accuracy, extremely low supply current, low noise, low on-resistance and high ripple rejection by cmos process. the R5320G series contain three voltage regulators. each of these voltage regulators in the R5320G series consists of a voltage reference unit, an error amplifier, resistors for setting o utput voltage, a current limit circuit and a chip enable circuit. the chip enable function contributes to prolong battery life. further, regulators in the R5320G series are with low dropout voltage, excellent load transient response and line transient response, thus the R5320G series are very suitable for the power supply for hand-held communication equipment. the output voltage of each regulator is fixed with high accuracy by laser trim. since the package for these ics are ssop8g package, high density mounting of the ics on boards is possible. n features l ultra-low supply current.....................................typ. 70a:vr1, typ. 70a:vr2, typ. 70a:vr3 l low standby current ............................................typ. 0.1a:vr1, typ. 0.1a:vr2, typ. 0.1a:vr3 l low dropout voltage ............................................typ. 0.22v (vr1) 0.16v (vr2,vr3) i out =150ma:vr1,80ma:vr2,vr3 (ex. for 3.0v output type) l high ripple rejection ...........................................typ.70db (f=1khz) l high output voltage accuracy..............................2.0% l excellent load transient response and line transient response l small package .......................................................8-pin ssop (0.65mm pitch) l input voltage .........................................................max. 6v n applications l power source for cellular phones such as gsm,cdma and personal handy-phone system. l power source for electrical appliances such as cameras, vcrs, camcorders, etc. l power source for battery-powered equipment.
rev.1.13 - 2 - n block diagram R5320Gxxxa vref current limit error amp. r1_1 r2_1 r1_2 r2_2 r1_3 r2_3 v out1 18 v dd 7 ce1 vref current limit error amp. v out2 2 6 ce2 vref current limit error amp. v out3 3 gnd 4 5 ce3
rev.1.13 - 3 - n selection guide the selection can be made by designating the part number as shown below : R5320Gxxxx-tr ? part number -- ab code descriptions a serial number for voltage setting from 001 b alphabetical code for mask versions a: standard n pin configuration ssop8g package 85 t=1.3max 1 7 24 6 2.9 0.3 (unit:mm) 0.65 4.0 0.3 2.8 0.2 3 n pin descriptions pin no. symbol descriptions 1v out1 output pin 2v out2 output pin 3v out3 output pin 4 gnd ground pin 5 ce3 chip enable pin 6 ce2 chip enable pin 7 ce1 chip enable pin 8v dd input pin
rev.1.13 - 4 - n absolute maximum ratings symbol item rating unit v in input voltage 7 v ce input voltage (ce pin) -0.3 ~ vin+0.3 v v out output voltage -0.3 ~ vin+0.3 v i out1 output current (v out1 ) 200 ma i out2 output current (v out2 ) 100 ma i out3 output current (v out3 ) 100 ma pd power dissipation 300 mw topt operating temperature range -40 ~ 85 c tstg storage temperature range -55 ~ 125 c n electrical characteristics l R5320Gxxxa vr1 topt=25c symbol item conditions min. typ. max. unit v out output voltage v in -v out =1.0v 1ma i out 30ma 0.98 1.02 v i out output current v in -v out =1.0v 150 ma d v out / d i out load regulation v in -v out =1.0v 1ma i out 80ma 12 40 mv v dif dropout voltage refer to electrical characteristic by output voltage (vr1) i ss supply current v in -v out =1.0v 70 120 a istandby supply current (standby) v in -v out =1.0v v ce =gnd 0.1 1.0 a d v out / d v in line regulation v out +0.5v v in 6v i out =30ma 0.05 0.20 %/v rr ripple rejection f=1khz, sinusoidal 1vp-p v in -v out =1.0v 70 db v in input voltage 6 v d v out / d t output voltage temperature coefficient i out =50ma -40c topt 85c 100 ppm/ c i lim short current limit v out =0v 50 ma r dn ce pull-down resistance 2.5 5 10 m w v ceh ce input voltage h 1.5 v in v v cel ce input voltage l 0 0.25 v en output noise bw=10hz-100khz 60 vrms l electrical characteristics by output voltage(vr1) topt=25c dropout voltage v dif (v) output voltage v out (v) conditions typ. max. 2.0 v out 2.4 0.35 0.55 2.5 v out 2.7 0.3 0.45 2.8 v out 3.3 0.22 0.35 3.4 v out 5.0 i out =150ma 0.2 0.3
rev.1.13 - 5 - vr2 topt=25c symbol item conditions min. typ. max. unit v out output voltage v in -v out =1.0v 1ma i out 30ma 0.98 1.02 v i out output current v in -v out =1.0v 80 ma d v out / d i out load regulation v in -v out =1.0v 1ma i out 50ma 12 40 mv v dif dropout voltage refer to electrical characteristics by output voltage (vr2) i ss supply current v in -v out =1.0v 70 120 a istandby supply current (standby) v in -v out =1.0v v ce =gnd 0.1 1.0 a d v out / d v in line regulation v out +0.5v v in 6v i =30ma 0.05 0.20 v rr ripple rejection f=1khz, sinusoidal 1vp-p v in -v out =1.0v 70 db v in input voltage 6 v d v out / d t output voltage temperature coefficient i out =30ma -40c topt 85c 100 ppm/ c i lim short current limit v out =0v 50 ma r dn ce pull-down resistance 2.5 5 10 m w v ceh ce input voltage h 1.5 v in v v cel ce input voltage l 0 0.25 v en output noise bw=10hz-100khz 60 vrms l electrical characteristics by output voltage (vr2) topt=25c dropout voltage v dif (v) output voltage v out (v) conditions typ. max. 2.0 v out 2.4 0.22 0.38 2.5 v out 2.7 0.2 0.38 2.8 v out 3.3 0.16 0.24 3.4 v out 5.0 i out =80ma 0.12 0.24
rev.1.13 - 6 - vr3 topt=25c symbol item conditions min. typ. max. unit v out output voltage v in -v out =1.0v 1ma i out 30ma 0.98 1.02 v i out output current v in -v out =1.0v 80 ma d v out / d i out load regulation v in -v out =1.0v 1ma i out 50ma 12 40 mv v dif dropout voltage refer to electrical characteristics by dropout voltage (vr3) i ss supply current v out +0.5v v in 6v i out =30ma 70 120 a istandby supply current (standby) f=1khz, sinusoidal 1vp-p v in -v out =1.0v 0.1 1.0 a d v out / d v in line regulation 0.05 0.20 %/v rr ripple rejection i out =30ma -40c topt 85c 70 db v in input voltage v out =0v 6 v d v out / d t output voltage temperature coefficient 100 ppm/ c i lim short current limit bw=10hz-100khz 50 ma r dn ce pull-down resistance 2.5 5 10 m w v ceh ce input voltage h 1.5 v in v v cel ce input voltage l 0 0.25 v en output noise 60 vrms l electrical characteristics by output voltage (vr3) topt=25c dropout voltage v dif (v) output voltage v out (v) conditions typ. max. 2.0 v out 2.4 0.24 0.38 2.5 v out 2.7 0.22 0.28 2.8 v out 3.3 0.16 0.24 3.4 v out 5.0 i out =80ma 0.15 0.24
rev.1.13 - 7 - n operation vref current limit error amp. r1_1 r2_1 1 8 7 vref current limit error amp. r1_2 r2_2 2 6 vref current limit error amp. r1_3 r2_3 3 14 5 fluctuation of each regulator'fs output voltage, or v out1 , 2 , 3 is detected individually and put back to an error amplifier through feedback resistors, or r1_1, r2_1, r1_2, r2_2, r1_3, r2_3 and compared with a reference voltage and compensated for the result and make a constant voltage. in each regulator, short protection is made by a current limit circuit and stand-by mode is available by a chip enable circuit.
rev.1.13 - 8 - n test circuits R5320G series c1=1 f, c2=c3=c4=2.2 f v out1 c1 c2 c3 c4 v in 8 1 v dd i out1 v out2 7 2 ce1 i out2 v out3 6 3 ce2 i out3 gnd 5 4 ce3 basic test circuit R5320G series c1=1 f, c2=c3=c4=2.2 f v out1 c1 c2 c3 c4 v in 8 1 a v dd i out1 v out2 7 2 ce1 i out2 v out3 6 3 ce2 i out3 gnd 5 4 ce3 test circuit for supply current R5320G series c1=c2=c3=2.2 f v out1 c1 c2 c3 8 1 p.g. v dd i out1 v out2 7 2 ce1 i out2 v out3 6 3 ce2 i out3 gnd 5 4 ce3 test circuit for line transient response
rev.1.13 - 9 - R5320G series c1=1 f, c2=c3=c4=2.2 f v out1 c1 c2 i1a i1b i2a i2b i3a i3b c3 c4 v in 8 1 v dd v out2 7 2 ce1 v out3 6 3 ce2 gnd 5 4 ce3 test circuit for load transient response R5320G series c1=c2=c3=2.2 f v out1 c1 c2 c3 8 1 v dd i out1 v out2 7 2 ce1 i out2 v out3 6 3 ce2 i out3 gnd 5 4 ce3 v in test circuit for ripple rejection
rev.1.13 - 10 - n typical characterestics 1) output voltage vs. output current 3v 4v 3.5 3.0 1.5 1.0 0.5 2.5 2.0 0.0 output current i out (a) 0 0.2 0.3 0.4 0.5 0.6 0.1 output voltage v out (v) vr1 5v 4v 3.5v v in = 3.3v 4.5 3.5 3.0 4.0 1.5 1.0 0.5 2.5 2.0 0.0 0 0.2 0.3 0.4 0.5 0.6 0.1 vr1 6v 5v 4.5v v in = 4.3v output current i out (a) output voltage v out (v) 3v 4v 3.5 3.0 1.5 1.0 0.5 2.5 2.0 0.0 0 0.2 0.3 0.4 0.5 0.1 vr2 5v 4v 3.5v v in = 3.3v output current i out (a) output voltage v out (v) 4.5 3.5 3.0 4.0 1.5 1.0 0.5 2.5 2.0 0.0 0 0.2 0.3 0.4 0.5 0.1 vr2 6v 5v 4.5v v in = 4.3v output current i out (a) output voltage v out (v) 3v 4v 3.5 3.0 1.5 1.0 0.5 2.5 2.0 0.0 0 0.2 0.3 0.4 0.1 vr3 5v 4v 3.5v v in = 3.3v output current i out (a) output voltage v out (v) 4.5 3.5 3.0 4.0 1.5 1.0 0.5 2.5 2.0 0.0 0 0.2 0.3 0.4 0.1 vr3 6v 5v 4.5v v in = 4.3v output current i out (a) output voltage v out (v)
rev.1.13 - 11 - 2) output voltage vs. input voltage 5v 3v 5.5 4.5 3.5 3.0 5.0 4.0 1.5 1.0 0.5 2.5 2.0 0.0 output current i out (a) 0 0.2 0.3 0.4 0.5 0.6 0.1 output voltage v out (v) vr1 6v 5.5v v in = 5.3v 4.0 3.0 1.0 2.0 0.0 input voltage v in (v) i out =1ma i out =30ma i out =50ma 023456 1 vr1 output voltage v out (v) 5v 3v 5.5 4.5 3.5 3.0 5.0 4.0 1.5 1.0 0.5 2.5 2.0 0.0 0 0.2 0.3 0.4 0.5 0.1 vr2 6v 5.5v v in = 5.3v output current i out (a) output voltage v out (v) 4.0 3.0 1.0 2.0 0.0 i out =1ma i out =30ma i out =50ma 023456 1 vr2 input voltage v in (v) output voltage v out (v) 5v 3v 5.5 4.5 3.5 3.0 5.0 4.0 1.5 1.0 0.5 2.5 2.0 0.0 0 0.2 0.3 0.4 0.1 vr3 6v 5.5v v in = 5.3v output current i out (a) output voltage v out (v) 4.0 3.0 1.0 2.0 0.0 i out =1ma i out =30ma i out =50ma 023456 1 vr3 input voltage v in (v) output voltage v out (v)
rev.1.13 - 12 - 4v 5v 5.0 4.0 3.0 1.0 2.0 0.0 i out =1ma i out =30ma i out =50ma 023456 1 vr1 output voltage v out (v) input voltage v in (v) 6.0 5.0 4.0 3.0 1.0 2.0 0.0 i out =1ma i out =30ma i out =50ma 023456 1 vr1 output voltage v out (v) input voltage v in (v) 4v 5v 5.0 4.0 3.0 1.0 2.0 0.0 i out =1ma i out =30ma i out =50ma 023456 1 vr2 output voltage v out (v) input voltage v in (v) 6.0 5.0 4.0 3.0 1.0 2.0 0.0 i out =1ma i out =30ma i out =50ma 023456 1 vr2 output voltage v out (v) input voltage v in (v) 4v 5v 5.0 4.0 3.0 1.0 2.0 0.0 i out =1ma i out =30ma i out =50ma 023456 1 vr3 output voltage v out (v) input voltage v in (v) 6.0 5.0 4.0 3.0 1.0 2.0 0.0 i out =1ma i out =30ma i out =50ma 023456 1 vr3 output voltage v out (v) input voltage v in (v)
rev.1.13 - 13 - 3) ripple rejection vs. input voltage (dc bias) 3v 3v i out = 10ma c out = tantal 2.2 f 50 60 70 80 40 30 10 20 0 100hz 1khz 10khz 3.1 3.3 3.4 3.5 3.2 vr1 input voltage v in (v) ripple rejection rr (db) i out = 50ma c out = tantal 2.2 f 50 60 70 80 40 30 10 20 0 100hz 1khz 10khz 3.1 3.3 3.4 3.5 3.2 vr1 input voltage v in (v) ripple rejection rr (db) 50 60 70 80 40 30 10 20 0 100hz 1khz 10khz 3.1 3.3 3.4 3.5 3.2 vr2 input voltage v in (v) ripple rejection rr (db) 50 60 70 80 40 30 10 20 0 100hz 1khz 10khz 3.1 3.3 3.4 3.5 3.2 vr2 input voltage v in (v) ripple rejection rr (db) 50 60 70 80 40 30 10 20 0 100hz 1khz 10khz 3.1 3.3 3.4 3.5 3.2 vr3 input voltage v in (v) ripple rejection rr (db) 50 60 70 80 40 30 10 20 0 input voltage v in (v) 100hz 1khz 10khz 3.1 3.3 3.4 3.5 3.2 ripple rejection rr (db) vr3
rev.1.13 - 14 - 4) output voltage vs. temperature 3v 4v 3.05 3.10 3.00 2.95 2.90 -50 50 0 100 i out = 50ma vr1 temperature topt topt ( ) output voltage v out (v) 4.05 4.10 4.00 3.95 3.90 -50 50 0 100 i out = 50ma vr1 temperature topt topt ( ) output voltage v out (v) 3v 4v 3.05 3.10 3.00 2.95 2.90 -50 50 0 100 i out = 30ma vr2 temperature topt topt ( ) output voltage v out (v) 4.05 4.10 4.00 3.95 3.90 -50 50 0 100 i out = 30ma vr2 temperature topt topt ( ) output voltage v out (v) 3v 4v 3.05 3.10 3.00 2.95 2.90 -50 50 0 100 i out = 10ma vr3 temperature topt topt ( ) output voltage v out (v) 4.05 4.10 4.00 3.95 3.90 temperature topt topt ( ) -50 50 0 100 output voltage v out (v) i out = 10ma vr3
rev.1.13 - 15 - 5) supply current vs. input voltage 5v 3v 5.05 5.10 5.00 4.95 4.90 -50 50 0 100 i out = 50ma vr1 temperature topt topt ( ) output voltage v out (v) 50 60 70 80 40 30 10 20 0 input voltage v in (v) vr1 vr2 vr3 03 2456 1 supply current i ss ( a) 5v 4v 5.05 5.10 5.00 4.95 4.90 -50 50 0 100 i out = 30ma vr2 temperature topt topt ( ) output voltage v out (v) 50 60 70 80 40 30 10 20 0 vr1 vr2 vr3 03 2456 1 input voltage v in (v) supply current i ss ( a) 5v 5v 5.05 5.10 5.00 4.95 4.90 -50 50 0 100 i out = 10ma vr3 temperature topt topt ( ) output voltage v out (v) 50 60 70 80 40 30 10 20 0 vr1 vr2 vr3 03 2456 1 input voltage v in (v) supply current i ss ( a)
rev.1.13 - 16 - 6) supply current vs. temperature 3v 4v vr1 80 100 60 40 20 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a) vr1 80 100 60 40 20 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a) vr2 80 100 60 40 20 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a) vr2 80 100 60 40 20 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a) vr3 80 100 60 40 20 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a) vr3 80 100 60 40 20 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a)
rev.1.13 - 17 - 7) dropout voltage vs. set output voltage 5v 3v vr1 80 100 60 20 40 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a) 0.15 0.20 0.25 0.10 0.05 0.00 set output voltage vreg (v) 10ma 30ma 50ma 100ma vr1 2345 dropout voltage v dif (v) vr2 80 100 60 20 40 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a) 0.15 0.20 0.25 0.10 0.05 0.00 10ma 30ma 50ma vr2 2345 set output voltage vreg (v) dropout voltage v dif (v) vr3 80 100 60 20 40 0 -50 50 0 100 temperature topt topt ( ) supply current i ss ( a) 0.15 0.20 0.25 0.10 0.05 0.00 10ma 30ma 50ma vr3 2345 set output voltage vreg (v) dropout voltage v dif (v)
rev.1.13 - 18 - 8) ripple rejection vs. frequency 3v 3v 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma frequency f (khz) c out = 0.47 f vr1 ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma c out = 2.2 f vr1 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr2 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr2 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr3 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr3 frequency f (khz) ripple rejection rr (db)
rev.1.13 - 19 - 4v 4v 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma c out = 0.47 f vr1 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma c out = 2.2 f vr1 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr2 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr2 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr3 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr3 frequency f (khz) ripple rejection rr (db)
rev.1.13 - 20 - 5v 5v 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma c out = 0.47 f vr1 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma c out = 2.2 f vr1 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr2 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr2 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr3 frequency f (khz) ripple rejection rr (db) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1ma 10ma 50ma vr3 frequency f (khz) ripple rejection rr (db)
rev.1.13 - 21 - 9) dropout voltage vs. output current 3v 4v 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 50 100 150 output current i out (ma) vr1 25 c 85 c -40 c dropout voltage v dif (v) 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 50 100 150 vr1 25 c 85 c -40 c output current i out (ma) dropout voltage v dif (v) 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 2040 6080 vr2 25 c 85 c -40 c output current i out (ma) dropout voltage v dif (v) 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 2040 6080 vr2 25 c 85 c -40 c output current i out (ma) dropout voltage v dif (v) 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 2040 6080 vr3 25 c 85 c -40 c output current i out (ma) dropout voltage v dif (v) 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 2040 6080 vr3 25 c 85 c -40 c output current i out (ma) dropout voltage v dif (v)
rev.1.13 - 22 - 5v 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 50 100 150 vr1 25 c 85 c -40 c output current i out (ma) dropout voltage v dif (v) 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 2040 6080 vr2 25 c 85 c -40 c output current i out (ma) dropout voltage v dif (v) 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 2040 6080 vr3 25 c 85 c -40 c output current i out (ma) dropout voltage v dif (v)
rev.1.13 - 23 - 10) line transient response tr=tf=5 s c out =tantal 2.2 f 2.96 2.97 2.98 2.99 3.00 3.01 3.02 output voltage (v) input voltage (v) 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 output voltage(vr1) input voltage i out =50ma time t ( s) i out =30ma output voltage(vr1) input voltage 2.96 2.97 2.98 2.99 3.00 3.01 3.02 output voltage (v) input voltage (v) 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 time t ( s) i out =10ma output voltage(vr1) input voltage 2.96 2.97 2.98 2.99 3.00 3.01 3.02 output voltage (v) input voltage (v) 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 time t ( s)
rev.1.13 - 24 - tr=tf=5 s c out =tantal 0.47 f 2.96 2.97 2.98 2.99 3.00 3.01 3.02 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 i out =50ma output voltage (v) input voltage (v) output voltage(vr1) input voltage time t ( s) i out =30ma output voltage(vr1) input voltage 2.96 2.97 2.98 2.99 3.00 3.01 3.02 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 output voltage (v) input voltage (v) time t ( s) i out =10ma output voltage(vr1) input voltage 2.96 2.97 2.98 2.99 3.00 3.01 3.02 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 output voltage (v) input voltage (v) time t ( s)
rev.1.13 - 25 - tr=tf=5 s c out =ceramic 2.2 f+esr1 2.96 2.97 2.98 2.99 3.00 3.01 3.02 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 i out =50ma output voltage (v) input voltage (v) output voltage(vr1) input voltage time t ( s) i out =30ma output voltage(vr1) input voltage 2.96 2.97 2.98 2.99 3.00 3.01 3.02 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 output voltage (v) input voltage (v) time t ( s) i out =10ma output voltage(vr1) input voltage 2.96 2.97 2.98 2.99 3.00 3.01 3.02 0102030 40 50 60 70 80 0.0 1.0 6.0 5.0 4.0 3.0 2.0 output voltage (v) input voltage (v) time t ( s)
rev.1.13 - 26 - 11) load transient response c out = 2.2 f+1 3.10 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 2.85 2.80 3.15 3.20 3.25 3.30 3.35 3.40 output voltage v out (v) output current i out 1 (ma) -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 0 150 100 50 i out 1 v out 1 v out 2 i out 2=30ma v out 3 i out 3=10ma time t ( s)
rev.1.13 - 27 - c out = 2.2 f+1 3.10 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 2.85 2.80 3.15 3.20 3.25 3.30 3.35 3.40 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 0 100 50 i out 2 v out 1 v out 1 v out 2 v out 3 i out 1=50ma i out 3=10ma output voltage v out (v) output current i out 1 (ma) time t ( s)
rev.1.13 - 28 - c out = 2.2 f+1 3.00 2.95 2.90 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 2.85 2.80 3.05 3.10 3.15 3.20 3.25 3.30 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 0 100 50 i out 3 v out 1 v out 2 v out 3 i out 1=50ma i out 2=30ma output voltage v out (v) output current i out 1 (ma) time t ( s)
rev.1.13 - 29 - n technical notes to use this ic with ceramic capacitors, esr should be set in the range of the following graphs. test circuit for noise level measurement is shown below; v dd i out1 i out2 i out3 v out1 v out2 v out3 gnd esr esr esr ceramic 0.01 f R5320G sreies spectrum analyzer ceramic capacitor ceramic capacitor ceramic capacitor s.a. 1 2 3 4 8 ce1 7 ce2 6 ce3 5 v in noise level is measured with a spectrum analyzer and hatched area shows stable areas of which noise level is approximately equal or less than 40v (avg.). the relation between load current (i out ) and equivalent series resistors (esr) value of external output capacitor with the stable area is shown below; 100 10 1 0.1 0.01 load current (ma) ceramic capacitor 1 f 0 vr1 100 50 150 esr ( ) 100 10 1 0.1 0.01 0 vr1 100 50 150 esr ( ) ceramic capacitor 2.2 f load current (ma)
rev.1.13 - 30 - 100 10 1 0.1 0.01 0 vr2 40 20 80 60 load current (ma) ceramic capacitor 1 f esr ( ) 100 10 1 0.1 0.01 0 vr2 40 20 80 60 esr ( ) ceramic capacitor 2.2 f load current (ma) 100 10 1 0.1 0.01 0 vr3 40 20 80 60 esr ( ) load current (ma) 100 10 1 0.1 0.01 0 vr3 40 20 80 60 esr ( ) load current (ma) measuring conditions frequency band : 10hz to 1mhz temperature : 25c

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