r1161x series low voltage 300ma ldo with eco pin no.ek-111-091101 cmos ldo regulator the r1161x series are cmos-based ldo regulators with eco pin featuring 300ma output. by inputting control signals from the eco pin, the mode of the regulator can be switched to low power mode or fast response mode, thus making both active and sleep modes available for the system. the ce pin can switch the regulator into standby mode. features ? supply current (i ss1 ) ? typ. 60 a (fast mode, v in =set v out +1v) ? supply current (i ss2 ) ? typ. 4.5 a ( low power mode, same as above ) ? standby current (i standby ) typ. 0.1 a (same as above, in standby) ? dropout voltage (v dif ) ? typ. 0.23v (fast mode, i out =300ma) typ. 0.24v (low power mode, i out =300ma) ? ripple rejection (rr)typ. 65db (fast mode, f=1khz) ? input voltage range (v in ) 1.4v to 6.0v ? output voltage range (v out )0.8v to 3.3v (internally fixed) ? output voltage accuracy 2% (fast mode) 3% (low power mode) ? temp. coeff. of output voltage typ. 100ppm/ c ? line regulationtyp. 0.01%/v (fast mode) ? fold-back protection circuitcurrent limit typ. 50ma ? auto-discharge function d version ? packages son-6, sot-23-5, hson-6 ? ceramic capacitors can be used. 1 f or more (v out > = 1.0v) ? ) at v out =2.8v block diagrams r1161xxxxa ( ce pin "l" active) r1161xxxxb (ce pin "h" active) r1161xxxxd (with auto-discharge function) v dd gnd v out eco vref current limit ce v dd ce gnd v out eco vref current limit v dd ce gnd v out eco vref current limit selection guides package quantity per reel part no. son-6 3,000 pcs r1161d . xx . 1 . ? -tr-f sot-23-5 3,000 pcs r1161n . xx . 1 . ? -tr-f hson-6 3,000 pcs r1161d . xx . 2 . ? -tr-f . xx . : specify the output voltage within the range 0.8v ( . 08 . ) to 3.3v ( . 33 . ) in 0.1v steps. . ? : select the polarity of the ce pin from ( . a . ) "l" active, ( . b . ) "h" active or ( . d . ) "h" active with auto-discharge function. packages (top view) t ypical characteristic son-6 sot-23-5 hson-6 6 5 4 1 2 3 ? 1 3 5 4 2 1 3 6 4 2 5 ? 1 v dd 2 nc 3 v out 4 eco 5 gnd 6 ce or ce 1 v dd 2 gnd 3 ce or ce 4 eco 5 v out 1 v dd 2 nc 3 v out 4 eco 5 gnd 6 ce or ce r1161x26xx dropout voltage vs. output current (fast response mode) 0 50 100 150 200 250 300 dropout voltage v dif (v) output current i out (ma) eco=h 85 c 25 c -40 c 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 ? ) the tab and tab suspension leads on back side are substrate level (gnd). applications ? power source for hand-held communication equipment, cameras, and vcrs ? very stable voltage reference ? 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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