rp171x series 150ma 10v input ldo no.ek-245-100223 cmos ldo regulator the rp171x series are cmos-based ldo regulators featuring 150ma output current. due to the 10v maximum input voltage, rp171x can be used for 2 cell lithium-ion battery powered portable appliances and home appliances. rp171x has a fold-back protection circuit and a thermal shutdown circuit. sc-88a and sot-23-5 packages are available. features ? supply current (i ss ) typ. 23 a (v in =set v out +1v) ? standby current (i standby ) typ. 0.1 a (v in =10v, ce="l") ? dropout voltage (v dif ) typ. 0.4v (i out =150ma, v out =2.8v) ? ripple rejection (rr) typ. 70db (f=1khz) ? input voltage range (v in ) 2.6v to 10v ? output voltage range (v out ) 1.2v to 6.0v (internally fixed) ? output voltage accuracy 1% ? temp. coeff. of output voltage typ. 80ppm/ c ? line regulationtyp. 0.02%/v ? fold-back protection circuitcurrent limit typ. 40ma ? thermal shutdown circuit stops at 165 c ? auto-discharge function d version ? packages sc-88a, sot-23-5 ? ceramic capacitors can be used. 1 f or more block diagrams rp171xxxxb rp171xxxxd (without auto-discharge function) (with auto-discharge function) v dd gnd v out ce vref current limit thermal shutdown v dd gnd v out ce vref current limit thermal shutdown selection guides package quantity per reel part no. sc-88a 3,000 pcs rp171q . xx . 2 . ? -tr-fe sot-23-5 3,000 pcs rp171n . xx . 1 . ? -tr-fe . xx . : specify the output voltage within the range 1.2v ( . 12 . ) to 6.0v ( . 60 . ) in 0.1v steps. . ? : select from ( . b . ) without auto-discharge function or ( . d . ) with auto-discharge function. packages (top view) t ypical characteristic sc-88a sot-23-5 1 3 5 4 2 1 3 5 4 2 1 ce 2 nc 3 gnd 4 v out 5 v dd 1 v dd 2 gnd 3 ce 4 nc 5 v out rp171x30xx dropout voltage vs. output current 0 120 60 90 30 150 output current i out (ma) dropout voltage v dif (v) 85 c 25 c -40 c 0 0.40 0.20 0.30 0.10 0.25 0.35 0.15 0.05 applications ? power source for hand-held communication equipment and laptop personal computers ? power source for digital slrs and vcrs ? power source for home appliances ? power source for battery-powered equipment
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- 5 % & m f d u s p o j d % f w j d f t $ p n q b o z ricoh presented with the japan management quality award for 1999 . ricoh continually strives to promote customer satisfaction, and shares the achievements of its management quality improvement program with people and society. ricoh awarded iso 14001 certification. the ricoh group was awarded iso 14001 certification, which is an international standard for environmental management systems, at both its domestic and overseas production facilities. our current aim is to obtain iso 14001 certification for all of our business offices. ricoh completed the organization of the lead-free production for all of our products. after apr. 1, 2006, we will ship out the lead free products only. thus, all products that will be shipped from now on comply with rohs directive.
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