rp131x series 1a ldo no.ek-174-091101 cmos ldo regulator the rp131x series are cmos-based ldo regulators featuring 1a out put with low on-resistance. the cmos process provides both large output current and low supply current. the dropout voltage is significantly lower than bipolar regulators. the rp131x han dles low voltage with an input voltage from 1.6v and an output voltage from 0.8v. accordingly, the device supports highly integrated , low voltage-driven lsi as a rear stage of the dc/dc converter. the ce pin can switch the regulator into standby mode. in addition t o a fold-back protection circuit built into conventional ldo regulators, rp131x has a thermal shutdown circuit and inrush current l imit circuit. ceramic capacitors can be used. features ? supply current (i ss ) typ. 65 a (v in =6.5v) ? standby current (i standby ) typ. 0.15 a (same as above, ce=?l?) ? dropout voltage (v dif ) typ. 0.5v (i out =1a, v out =2.8v) ? ripple rejection (rr)typ. 70db (f=1khz, v out < = 3.3v), typ. 60db (f=1khz, v out >3.3v) ? input voltage range (v in ) 1.6v to 6.5v ? output voltage range (v out )0.8v to 5.0v (internally fixed) ? output voltage accuracy 1% ? temp. coeff. of output voltage typ. 100ppm/ c ? line regulationtyp. 0.05%/v ? fold-back protection circuitcurrent limit typ. 250ma ? inrush current limit circuit typ. 500ma ? thermal shutdown circuit stops at 165 c. ? packages dfn (plp)1820-6, sot-89-5, hsop-6j to-252-5-p2 ? ceramic capacitors can be used. 2.2 f or more (v out < = f or more (v out > 3.6v) (the above shows specification at topt=25 c. design assurance value at -40 c < = < = c is also available. for details, please refer to the datasheet.) block diagrams r131xxx1b r131xxx1d (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. dfn(plp)1820-6 5,000 pcs rp131k . xx . 1 . ? -tr sot-89-5 1,000 pcs rp131h . xx . 1 . ? -t1-f hsop-6j 1,000 pcs rp131s . xx . 1 . ? -e2-f to-252-5-p2 3,000 pcs rp131j . xx . 1 . ? -t1-f . xx . : specify the output voltage within the range 0.8v( . 08 . ) to 5.0v( . 50 . ) in 0.1v steps. . ? : select from ( . b . ) without auto-discharge function or ( . d . ) with auto-discharge function. packages (top view) t ypical characteristic dfn ( plp ) 1820-6 sot-89-5 hsop-6j to-252-5-p2 6 5 4 1 2 3 ? 1 3 5 4 2 13 64 2 5 1 2345 1 v out ? 1 2 v out ? 1 3 gnd 4 ce 5 v dd ? 1 6 v dd ? 1 1 nc 2 gnd 3 ce 4 v dd 5 v out 1 v out 2 gnd ? 1 3 nc 4 ce 5 gnd ? 1 6 v dd 1 v out 2 gnd ? 1 3 gnd ? 1 4 ce 5 v dd rp131x331x dropout voltage vs. output current ? ) the tab is substrate level (gnd). ? 1) the v out pin, v dd pin and gnd pin must be wired each other when it is mounted on board. applications ? power source for hand-held communication equipment, cameras, and vcrs ? power source for battery-powered equipment ? power source for laptop personal computers and home appliances 0 1.4 1.0 0.6 1.2 0.8 0.4 0.2 0 800 200 400 600 900 300 500 700 100 1000 output current i out (ma) dropout voltage v dif (v) 85 c 25 c -40 c
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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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