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preliminary datasheet 1 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 general description the ap2121 series are positive voltage regulator ics designed by cmos process. each of these ics consists of a voltage reference, an er ror amplifier, a resistor net- work for setting output voltage, a current limit circuit for current protection and a chip enable circuit (5-pin products only). the ap2121 series have features of high ripple rejec- tion, low dropout voltage, low noise, high output volt- age accuracy, and low current consumption which make them ideal for use in various battery-powered devices. the ap2121 series have 1.5v, 2.5v and 3.2v versions. the ap2121 are available in standard sot-23-3 and sot-23-5 packages. features low dropout voltage at i out =100ma: 150mv typical (except 1.5v version) low standby current: 0.1 a typical (except 1.5v version) low quiescent current: 25 a typical high ripple rejection: 70db typical f=10khz excellent line regulation: 4mv typical excellent load regulation: 12mv typical high output voltage accuracy: 2% excellent line transient response and load transient response low esr ceramic capacitor available esd (human body model): 2kv applications mobile phones, cordless phones wireless communication equipment portable games cameras, video recorders sub-board power supplies for telecom equip- ment battery powered equipment figure 1. package types of ap2121 sot-23-5 sot-23-3
preliminary datasheet 2 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 pin configuration figure 2. pin configuration of ap2121 (top view) k package (sot-23-5) nc v out v in gnd 1 2 3 4 5 ce n package (sot-23-3) v in gnd 1 2 3 v out pin description pin number pin name function sot-23-3 sot-23-5 31 v in input voltage 1 2 gnd ground 3 ce active high enable input pin. l ogic high=enable, l ogic low=shutdown 4 nc no connection 25 v out regulated output voltage
preliminary datasheet 3 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 functional block diagram figure 3. functional block diagram of ap2121 vref current limit v in ce v out gnd 2(1) 3 sot-23-5 (sot-23-3) 1(3) 5(2) circuit type package e1: lead free ap2121 - tr: tape and reel ordering information 1.5: fixed output 1.5v 2.5: fixed output 2.5v n: sot-23-3 3.2: fixed output 3.2v k: sot-23-5 a: active high (pull-down resistor built-in) blank: no enable function
preliminary datasheet 4 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 parameter symbol value unit input voltage v in 6.5 v output current i out 300 ma storage temperature range t stg -65 to 150 o c lead temperature (soldering, 10sec) t lead 260 o c esd (human body model) 2000 v note 1: stresses greater than those li sted under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only, and functiona l operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. exposure to "a bsolute maximum ratings " for extended periods may affect device reliability. absolute maximum ratings (note 1) parameter symbol min max unit input voltage v in 6 v operating junction temperature range t j -40 125 o c recommended operating conditions package tempe rat ure range condition part number marking id packing type tin lead lead free tin lead lead free sot-23-3 -40 to 125 o c ap2121n-1.5tre1 ef1 tape & reel sot-23-5 active high (pull- down resistor built-in) ap2121ak-2.5tre1 e1v tape & reel active high (pull- down resistor built-in) ap2121ak-3.2tre1 e3z tape & reel ordering information (continued) bcd semiconductor's pb-free products, as designated with "e1" suffix in th e part number, are rohs compliant.
5 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet 150ma extremely low noise ldo regulator ap2121 parameter symbol conditions min typ max unit output voltage v out v in =2.5v, 1ma i out 30ma 1.47 1.5 1.53 v input voltage v in 6v output current i out v in -v out =1v 150 ma load regulation v rload v in =2.5v, 1ma i out 80ma 12 40 mv line regulation v rline 2.3v v in 6v, i out =30ma 416mv dropout voltage v drop i out =100ma 400 600 mv quiescent current i q v in =2.5v, i out = 0ma 25 50 a power supply rejection ratio psrr ripple 0.5vp-p, f=10khz, v in =2.5v 70 db output voltage temperature coefficient ? v out / ? t i out =30ma, -40 o c t j 125 o c 150 v/ o c ( ? v out /v out )/ ? t i out =30ma, -40 o c t j 125 o c 100 ppm/ o c short current limit i limit v out =0v 50 ma rms output noise v noise t a =25 o c, 10hz f 100khz 30 vrms (v in =2.5v, t j =25 o c, c in =1 f, c out =1 f, unless otherwise specified.) electrical characteristics ap2121-1.5v electri cal characteristics
preliminary datasheet 6 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 parameter symbol conditions min typ max unit output voltage v out v in =3.5v, 1ma i out 30ma 2.45 2.5 2.55 v input voltage v in 6v output current i out v in -v out =1v 150 ma load regulation v rload v in =3.5v, 1ma i out 80ma 12 40 mv line regulation v rline 3v v in 6v, i out =30ma 416mv dropout voltage v drop i out =100ma 150 300 mv quiescent current i q v in =3.5v, i out = 0ma 25 50 a standby current i std v in =3.5v, v ce in off mode 0.1 1 a power supply rejection ratio psrr ripple 0.5vp-p, f=10khz, v in =3.5v 70 db output voltage temperature coefficient ? v out / ? t i out =30ma, -40 o c t j 125 o c 250 v/ o c ( ? v out /v out )/ ? t i out =30ma, -40 o c t j 125 o c 100 ppm/ o c short current limit i limit v out =0v 50 ma rms output noise v noise t a =25 o c, 10hz f 100khz 30 vrms ce "high" voltage ce input voltage "high" 1.5 v in v ce "low" voltage ce input voltage "low" 0 0.25 v ce pull-down resistance r pd 2.5 5 10 m ? (v in =3.5v, t j =25 o c, c in =1 f, c out =1 f, unless otherwise specified.) electrical characteristics (continued) ap2121-2.5v electri cal characteristics
preliminary datasheet 7 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 parameter symbol conditions min typ max unit output voltage v out v in =4.2v, 1ma i out 30ma 3.136 3.2 3.264 v input voltage v in 6v output current i out v in -v out =1v 150 ma load regulation v rload v in =4.2v, 1ma i out 80ma 12 40 mv line regulation v rline 3.7v v in 6v, i out =30ma 416mv dropout voltage v drop i out =100ma 150 300 mv quiescent current i q v in =4.2v, i out = 0ma 25 50 a standby current i std v in =4.2v, v ce in off mode 0.1 1 a power supply rejection ratio psrr ripple 0.5vp-p, f=10khz, v in =4.2v 70 db output voltage temperature coefficient ? v out / ? t i out =30ma, -40 o c t j 125 o c 320 v/ o c ( ? v out /v out )/ ? t i out =30ma, -40 o c t j 125 o c 100 ppm/ o c short current limit i limit v out =0v 50 ma rms output noise v noise t a =25 o c, 10hz f 100khz 30 vrms ce "high" voltage ce input voltage "high" 1.5 v in v ce "low" voltage ce input voltage "low" 0 0.25 v ce pull-down resistance r pd 2.5 5 10 m ? (v in =4.2v, t j =25 o c, c in =1 f, c out =1 f, unless otherwise specified.) ap2121-3.2v electri cal characteristics electrical characteristics (continued)
preliminary datasheet 8 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 typical performance characteristics figure 4. output voltage vs. output current figure 5. outp ut voltage vs. input voltage figure 6. dropout voltage vs. output current figure 7. output voltage vs. temperature 0 50 100 150 200 250 300 350 0.0 0.4 0.8 1.2 1.6 output voltage (v) output current (ma) ap2121-1.5v v in =2.0v v in =2.5v v in =3.0v 0246810 0.0 0.4 0.8 1.2 1.6 output voltage (v) input voltage (v) ap2121-1.5v i out =30ma 0 50 100 150 200 250 300 0.0 0.1 0.2 0.3 0.4 0.5 0.6 minimum operating requirement dropout voltage (v) output current (ma) ap2121-1.5v -25 0 25 50 75 100 125 1.40 1.42 1.44 1.46 1.48 1.50 1.52 1.54 1.56 1.58 1.60 ap2121-1.5v v in =2.5v i out =30ma output voltage (v) temperature ( o c)
preliminary datasheet 9 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 ? v out (0.05v/div) v in ( 1 v / d i v ) typical performance ch aracteristics (continued) figure 8. supply current vs. input volta ge figure 9. supply cu rrent vs. temperature -25 0 25 50 75 100 125 0 5 10 15 20 25 30 35 40 supply current ( a) temperature ( o c) ap2121-1.5v v in =2.5v i out =0ma figure 10. line transient (conditions: i out =30ma, c in =1 f, c out =1 f) time (40 s/div) figure 11. load transient (conditions: v in =2.5v, c in =1 f, c out =1 f) v out (0.1/v/div) i out (50ma/div) ap2121-1.5v time (20 s/div) ap2121-1.5v 0 100 1.5 1.4 0 2 3 012345678 0 10 20 30 40 50 60 ap2121-1.5v i out =0ma supply current ( a) input voltage (v) 0.05
preliminary datasheet 10 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 typical performance ch aracteristics (continued) figure 12. psrr vs. frequency 10 100 1000 10000 100000 1000000 0 20 40 60 80 100 psrr (db) frequency (hz) ap2121-1.5v v in =2.5v i out =30ma c in =c out =1 f
11 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet 150ma extremely low noise ldo regulator ap2121 typical application figure 13. typical application of ap2121 note: filter capacitors are required at the ap2121's input and output. 1 f capacitor is required at the input. the minimum output capacitance required for stability should be more than 1 f with esr from 0.1 ? to 10 ?. ceramic capacitors are recommended. v in ap2121-1.5 c in 1 f c out 1 f v out v in v out gnd v in ap2121-2.5 c in 1 f c out 1 f v out v in v out gnd ce nc v in =2.5v v out =1.5v v out =2.5v v in =3.5v
preliminary datasheet 12 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited 150ma extremely low noise ldo regulator ap2121 mechanical dimensions sot-23-3 unit: mm(inch) 2.300(0.091) 2.500(0.098) 1.200(0.047) 1.400(0.055) 0.920(0.036) 0.980(0.039) 0.390(0.015) 0.450(0.018) 1.900(0.075)ref 2.800(0.110) 3.000(0.118) 2.0 3.0 0.500(0.020) 0.700(0.028) 1.050(0.041)ref 0.020(0.001) 0.100(0.004) 0.900(0.035) 1.100(0.043) 4 ? r0.100(0.004) 7.0 7.0 0.550(0.022)ref 0.200(0.008)min 0.100(0.004) gauge plane 0.080(0.003) 0.150(0.006) r0.100(0.004) 0.0 ~ 10.0
13 feb. 2006 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet 150ma extremely low noise ldo regulator ap2121 mechanical dimens ions (continued) sot-23-5 unit: mm(inch) 2.820(0.111) 2 . 6 5 0 ( 0 . 1 0 4 ) 1 . 5 0 0 ( 0 . 0 5 9 ) 0 . 0 0 0 ( 0 . 0 0 0 ) 1 . 0 5 0 ( 0 . 0 4 1 ) 0.300(0.012) 0.950(0.037) 1 . 0 5 0 ( 0 . 0 4 1 ) 0.100(0.004) 0.200(0.008) 0 . 3 0 0 ( 0 . 0 1 2 ) 8 0 3.020(0.119) 1 . 7 0 0 ( 0 . 0 6 7 ) 2 . 9 5 0 ( 0 . 1 1 6 ) 0.400(0.016) 1 . 2 5 0 ( 0 . 0 4 9 ) 0 . 1 0 0 ( 0 . 0 0 4 ) 1 . 1 5 0 ( 0 . 0 4 5 ) 0.200(0.008) 0 . 6 0 0 ( 0 . 0 2 4 ) 1.800(0.071) 2.000(0.079) 0 . 7 0 0 ( 0 . 0 2 8 ) r e f t y p
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 27b, tower c, 2070, middle shen nan road, shenzhen 518031, china tel: +86-755-8368 3987, fax: +86-755-8368 3166 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 3170 de la cruz blvd., suite 105, santa clara, ca 95054-2411, u.s.a tel: +1-408-988 6388, fax: +1-408-988 6386 - 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

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