rp154x series small dual 300ma ldo no.ek-202-100223 cmos ldo regulator the rp154x series are cmos-based dual output ldo regulators featuring 300ma output. various basic performances of the rp series have been improved by adopting a new manufacturing process. rp154x features a supply current from 50 a per output, a minimum input voltage from 1.4v and the output voltage can be set from 0.8v to 3.6v (in 0.1v steps). rp154x is available in sot -23-6 and dfn1216-8 packages. due to the low minimum input voltage rp154l is able to extend battery life, additionally the ldo has le ss power dissipation by the low dropout voltage between input and output. features ? supply current (i ss ) typ. 50 a 2 (v in =set v out +1v) ? standby current (i standby ) typ. 0.1 a 2 (same as above, ce1/ce2="l") ? dropout voltage (v dif ) typ. 0.25v (i out =300ma, v out =2.8v) ? ripple rejection (rr) typ. 70db (f=1khz) ? input voltage range (v in ) 1.4v to 5.25v ? output voltage range (v out ) 0.8v to 3.6v ? (internally fixed) ? output voltage accuracy 1% ? temp. coeff. of output voltage typ. 80ppm/ c ? line regulationtyp. 0.02%/v ? fold-back protection circuit current limit typ. 60ma ? auto-discharge function b version ? packages dfn1216-8, sot-23-6 ? ceramic capacitor can be used. 1 f or more ? ) for information about combination of out put voltage, visit our website to check. (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 rp154nxxxb rp154lxxxb (single input type) (dual input type) vref current limit error amp. r1_1 r2_1 vref current limit error amp. r1_2 r2_2 v out1 v out2 v dd ce1 ce2 gnd vref current limit error amp. r1_1 r2_1 vref current limit error amp. r1_2 r2_2 v out1 v out2 v dd1 ce1 ce2 gnd v dd2 ? ) xxxa version does not exist above blue line. selection guides package quantity per reel part no. dfn1216-8 5,000 pcs rp154l . xxx ? -e2 sot-23-6 3,000 pcs rp154n . xxx ? -tr-fe . xxx . : specify a combination of output voltage for each output using serial numbers. . ? : select from ( . a . ) without auto-discharge function or ( . b . ) with auto-discharge function. packages typica l characteristic dfn1216-8 sot-23-6 top view bottom view 2 7 3 6 4 5 1 8 3 6 2 7 1 8 4 5 ? 6 5 4 1 2 3 1 gnd ? 1 2 v out1 3 v out2 4 gnd ? 1 5 ce2 6 v dd2 7 v dd1 8 ce1 1 ce1 2 v dd 3 ce2 4 v out2 5 gnd 6 v out1 rp154x (vr1/vr2) dropout voltage vs. output current 85 c 25 c -40 c 0 300 v out =2.5v 250 100 200 150 50 0 200 250 100 50 150 300 output current i out (ma) dropout voltage v dif (mv) ? ) the tab is substrate level (gnd). ? 1) the gnd pin must be wired toge ther when it is mounted on board. applications ? power source for hand-held communication equipment, cameras, 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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