r3117x series low voltage detector with sense pin no.ek-186-091101 cmos voltage detector the r3117x series are cmos-based voltage detector ics that can operate at low voltage. since r3117x has a sense pin for monitoring voltage separately from the power pin, its reset signal does not become unstable as long as power supply is secured and the "l" can be maintained. features ? supply current (i ss ) typ. 0.29 a (v sense =-v det 1.1) ? operating voltage range (v dd ) 1.0v to 6.0v ? detector threshold range (-v det ) 0.7v to 5.0v (internally fixed) ? reset signal "l" ? detector threshold accuracy 1% ? temp. coeff. of detector threshold typ. 30ppm/ c ? output type nch. open drain and cmos ? packages dfn(plp)1010-4, sc-88a, sot-23-5 (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 r3117xxxxa r3117xxxxc (nch. open drain output) (cmos output) d out v dd vref gnd sense d out v dd vref gnd sense selection guides timing chart package quantity per reel part no. dfn(plp)1010-4 10,000 pcs r3117k . xx . 1 ? -tr sc-88a 3,000 pcs r3117q . xx . 2 ? -tr-f sot-23-5 3,000 pcs r3117n . xx . 1 ? -tr-f . xx . : specify the detector threshold within 0.7v ( . 07 . ) to 5.0v ( . 50 . ) in 0.1v steps. . ? . : select the output type from ( . a . ) nch. open drain or ( . c . ) cmos. detector threshold h y steresis t plh gnd gnd v ddl - v det +v det detector threshold released voltage minimum operating voltage pull-up voltage sense pin voltage (v sense ) output voltage (v out ) r3117xxxxa t plh r3117xxxxc t phl t phl supply voltage (v dd ) detector threshold hysteresis supply voltage (v dd ) packages dfn(plp)1010-4 sc-88a sot-23-5 ? top view bottom view 2 1 3 4 1 2 4 3 13 54 2 13 54 2 1 d out 2 sense 3 gnd 4 v dd 1v dd 2 nc 3 gnd 4 sense 5d out 1d out 2v dd 3 gnd 4 nc 5 sense ? ) the tab is substrate level (gnd). applications ? microcontroller and logic circuit reset ? battery checker ? window comparator ? wave shaping circuit ? battery back-up circuit ? power failure detector
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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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