data sheet 150ma, low noise, high psrr low-dr opout regulator AUR9503 oct. 2011 rev. 1. 0 bcd semiconductor manufacturing limited 1 general description AUR9503 is a low-noise and high-psrr ldo linear voltage regulator which operates from 2.5v to 5.5v and provides up to 150ma output current. AUR9503 achieves ultra low quiescent current to be ideally used with green operational portable products. fixed output voltage options are provided with an internal built-in feedback circuit and optimized for stable operations with small 1 f ceramic output capacitors for excellent tr ansient performance. en pin enables the main chip operation and enables the output to be turned off to allow reduced power consumption in shutdown mode with a smaller than 0.1 a shutdown current. the low dropout voltage is 100mv at a load current of 150ma for system power efficiency. an internal current limit circuit is designed and operated as a short circuit protection for the regulator output pin. the AUR9503 is available in tiny dfn-1.61.6-6 package for a small footprint solution to satisfy the portable design needs. features ? low noise for rf application ? low dropout voltage: 100mv @ 150ma ? standby current: 55 a ? < 0.1 a standby current when shutdown ? thermal shutdown protection ? current limiting protection ? only 1 f output capacitor required for stability ? wide operating voltage range: 2.5v to 5.5v applications ? battery-powered device or equipment ? mobile phone, digital camera and mp3 player ? radios, other hand-held games and instruments ? post dc-dc voltage regulation ? mini pci & pci-e card ? wifi card figure 1. package type of AUR9503 dfn-1.61.6-6
data sheet 150ma, low noise, high psrr low-dr opout regulator AUR9503 oct. 2011 rev. 1. 0 bcd semiconductor manufacturing limited 2 pin configuration d package (dfn-1.61.6-6) figure 2. pin configuration of AUR9503 (top view) pin description pin number pin name function 1 en enable input signal, a 100k pull-down resistor is needed when there is no digital signal connected 2, 5 nc no internal connection 3 vin regulator input supply voltage with 1 f or greater capacitor 4 vout regulator voltage output pin, 1 f or greater capacitor is needed 6 gnd ground connection
data sheet 150ma, low noise, high psrr low-dr opout regulator AUR9503 oct. 2011 rev. 1. 0 bcd semiconductor manufacturing limited 3 functional block diagram enable control voltage reference voltage buffer and compensator feedback network current limit & thermal detect vin gnd en error amp vout 1 3 4 6 figure 3. functional block diagram of AUR9503 ordering information AUR9503 - circuit type 12: fixed output 1.2v package temperature range part number marking id packing type dfn-1.6 1.6-6 -40 to 80c AUR9503-12gd 503 tape & reel bcd semiconductor's pb-free products, as designated with "g" in the part number, are rohs compliant and green. package d: dfn-1.61.6-6 g: green
data sheet 150ma, low noise, high psrr low-dr opout regulator AUR9503 oct. 2011 rev. 1. 0 bcd semiconductor manufacturing limited 4 absolute maximum ratings (note 1) parameter symbol value unit supply input voltage v in 0 to 6.0 v enable input voltage v en -0.3 to v in +0.3 v output voltage v out 0 to v in +0.3 v power dissipation (on pcb, t a =25c) p d 0.55 w empirical thermal resistance (on pcb, t a =25c) ja 180 c/w operating junction temperature t j 160 c operating temperature t op -40 to 85 c storage temperature t stg -55 to 150 c esd (human body model) v hbm 2000 v esd (machine model) v mm 200 v note 1: stresses greater than those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ?recommended operating co nditions? is not implied. exposure to ?absolute maximum ratings? for extended periods may affect device reliability. recommended operating conditions parameter symbol min max unit supply input voltage v in 2.5 5.5 v junction temperature range t j -40 125 c ambient temperature range t a -40 80 c
data sheet 150ma, low noise, high psrr low-dr opout regulator AUR9503 oct. 2011 rev. 1. 0 bcd semiconductor manufacturing limited 5 electrical characteristics (note 2) v in =v out +0.5v, c in =c out =1 f (ceramic), t a =25c, unless otherwise specified. parameter symbol conditions min typ max unit supply voltage v in 2.5 5.5 v output voltage accuracy v out /v out i out =1ma -2 2 % shutdown current i sd en=low, i out =0ma 0.1 1 a quiescent current i q en=high, no load 55 a maximum output current i max r load =1 180 300 410 ma ?h? level v ih 1.6 5.5 enable input voltage ?l? level v il 0 0.3 v dropout voltage (note 3) v do i out = 150ma 50 200 mv load regulation v load 1ma< i out <150ma, 2.5v data sheet 150ma, low noise, high psrr low-dr opout regulator AUR9503 oct. 2011 rev. 1. 0 bcd semiconductor manufacturing limited 6 typical performance characteristics aur 9503 v in = 5 v c in = c out =1 f 1 ma 120 ma figure 4. load transient response figure 5. line transient response time 500 s/div i out 50ma/div v out 50mv/div v in 2v/div v out 50mv/div time 500 s/div
data sheet 150ma, low noise, high psrr low-dr opout regulator AUR9503 oct. 2011 rev. 1. 0 bcd semiconductor manufacturing limited 7 application information along with the highly development of portable devices, the ldo linear regulators are applied in many modern digital products like mobile phone, digital camera and mp3 player, etc. hence, the battery of the hand-held device is widely used and it is important to design a ldo regulator with low quiescent current to extend the battery?s life-time. when applied in rf application which is easily affected by noise, low noise supply voltage is also necessary. AUR9503, a low-noise and high-psrr product, is ideally designed for such portable applications. the basic application circuit of AUR9503 is shown in figure 6. 1. thermal protection the efficiency of a ldo linear regulator is determined by the difference between input and output voltage. the larger difference may cause overheat problems within the integrated circuit and reduce the efficiency. AUR9503 has a built-in over-temperature and over-current protection circuit. when the junction temperature exceeds 160 c , thermal shutdown circuit is enabled to prevent heat danger. 2. external capacitors the AUR9503 is stable using an output capacitor of 1 f. the ceramic capacitors can be used to attain better ac response. moreover, low esr can provide smaller undershoot and overshoot when loading current varies. besides, an input capacitor of 1 f is required to stabilize vin. all the capacitors? ground is recommended to share the ic?s gnd pin as direct and short as possible. 3. enable input the AUR9503 can be operated or shutdown by the voltage level of en pin. for continuous on state, the en pin is tied to vin. 4. pcb layout consideration the AUR9503 needs 1 f capacitors on vin and vout pin. place the capacitors as close as possible to the pin. typical application AUR9503 figure 6. typical application circuit of AUR9503
data sheet 150ma, low noise, high psrr low-dr opout regulator AUR9503 oct. 2011 rev. 1. 0 bcd semiconductor manufacturing limited 8 mechanical dimensions dfn-1.61.6-6 unit: mm(inch) 0.950(0.037) 1.050(0.041) 0.500(0.020) bsc 0.550(0.022) 0.650(0.026) pin 1 mark 1.550(0.061) 1.650(0.065) 1.550(0.061) 1.650(0.065) 0.290(0.011) 0.190(0.007) 0.180(0.007) 0.280(0.011) 0.700(0.028) 0.800(0.031) 0.000(0.000) 0.050(0.002) 0.195(0.008) 0.211(0.008) pin 1 mark
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 co., ltd. 800 yishan road, shanghai 200233, china tel: +021-6485-1491, fa x: +86-021-5450-0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manu facturing co., ltd., shenzhen office unit a room 1203,skyworth bldg., gaoxin ave.1.s., nanshan district shenzhen 518057, china tel: +86-0755-8660-4900, fax: +86-0755-8660-4958 taiwan office (taipei) bcd semiconductor (taiwan) company limited 3f, no.17, lane 171, sec. 2, jiu-zong rd., ne i-hu dist., taipei(114), taiwan, r.o.c tel: +886-2-2656 2808 fax: +886-2-2656-2806/26562950 taiwan office (hsinchu) bcd semiconductor (taiwan) company limited 8f, no.176, sec. 2, gong-dao 5th road, east district hsinchu city 300, taiwan, r.o.c tel: +886-3-5160181, fax: +886-3-5160181 - headquarters bcd (shanghai) micro-electronics limited no. 1600, zi xing road, shanghai zizhu scie nce-based industrial park, 200241, p. r.c. tel: +86-021-2416-2266, fax: +86-021-2416-2277 usa office bcd semiconductor corp. 48460 kato road, fremont, ca 94538, usa tel: +1-510-668-1950 fax: +1-510-668-1990 korea office bcd semiconductor limited korea office. room 101-1112, digital-empire ii, 486 sin-dong, yeongtong-gu, suwon-city, gyeonggi-do, korea tel: +82-31-695-8430 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 room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 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 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - 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 bcd semiconductor manufacturing limited 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 co., ltd. 800 yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd., shenzhen office unit a room 1203, skyworth bldg., gaoxin ave.1.s., nanshan district, shenzhen, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 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 corp. 30920 huntwood ave. hayward, ca 94544, usa tel : +1-510-324-2988 fax: +1-510-324-2788 - headquarters bcd semiconductor manufacturing limited no. 1600, zi xing road, shanghai zizhu sc ience-based industrial park, 200241, china tel: +86-21-24162266, fax: +86-21-24162277 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 room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 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 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - 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 bcd semiconductor manufacturing limited
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