r1118x series automatic mode shift 150ma ldo no.ek-175-091101 cmos ldo regulator the r1118x series are cmos-based auto mode switching ldo regulators featuring 150ma output. in auto switching mode, the operation can switch automatically to fast response mode or low power mode of the eco function according to output current. (automatic switching to fast response mode under i out > 7ma conditions or to low power mode under i out < 2ma conditions.) in lower power mode, supply current is as low as 5.5 a. in fast response mode, ripple rejection is 70db and noise is low. r1118x requires neither eco pin for switching mode nor microcontroller pin. r1118x supports low voltage, featuring input voltage from 1.4v and output voltage from 0.8v. standby mode and auto-discharge function are also available (see selection guide). ceramic capacitors can be used. features ? supply current (i ss1 ) typ. 5.5 a (low power mode, v in =set v out +1v) ? supply current (i ss2 ) typ. 50 a (fast mode, same as above) ? standby current (i standby ) typ. 0.1 a (v in =6.0v, ce = "l") ? dropout voltage (v dif ) typ. 0.27v (i out =150ma, v out =2.8v) ? ripple rejection (rr)typ. 70db (f=1khz), typ. 60db (f=10khz) ? input voltage range (v in ) 1.4v to 6.0v ? output voltage range (v out )0.8v to 4.2v (internally fixed) ? output voltage accuracy 1% ? temp. coeff. of output voltage typ. 100ppm/ c ? line regulation typ. 0.02%/v ? fold-back protection circuit current limit typ. 40ma ? auto-discharge function d version ? packages dfn(plp)1612-4b, sot-23-5 ? ceramic capacitors can be used. 1 f or more (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 r1118xxx1b r1118xxx1d (without auto-discharge function) (with auto-discharge function) v dd gnd v out ce vref current limit v dd gnd v out ce vref current limit selection guides package quantity per reel part no. dfn(plp)1612-4b 5,000 pcs r1118k . xx . 1 . ? -tr sot-23-5 3,000 pcs r1118n . xx . 1 . ? -tr-f . xx . : specify the output voltage within the range 0.8v( . 08 . ) to 4.2v( . 42 . ) in 0.1v steps. . ? : select from ( . b . ) without auto-discharge function or ( . d . ) with auto-discharge function. packages typica l characteristic dfn(plp)1612-4b sot-23-5 1 4 2 3 2 3 1 4 top view bottom view ? 1 3 5 4 2 1 v out 2 gnd 3 ce 4 v dd 1 v dd 2 gnd 3 ce 4 nc 5 v out r1118x281x dropout voltage vs. output current 0 75 100 125 50 25 150 output current i out (ma) dropout voltage v dif (v) 0 0.35 0.30 0.15 0.05 0.20 0.25 0.10 85 c 25 c - 40 c ? ) the tab is substrate level (gnd). applications ? power source for hand-held communication equipment, cameras, and vcrs ? power source for battery-powered equipment ? power source for home appliances
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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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