R3111x Series
Low Input Voltage Detector
No.EK-071-091101 CMOS Voltage Detector
The R3111x Series are CMOS-based voltage detector ICs that can operate at low voltage.
R3111x is a simple voltage detector without an internal delay circuit.
FEATURES
• Supply Current (ISS1)·······················Typ. 1μA (VDD=-VDET+2V, R3111x15x)
• Operating Voltage Range (VDD)······0.7V to 10.0V (Topt=25°C)
•
Detector Threshol d Range (-V
DET
)
·······0.9V to 6.0V (internally fixed)
• Reset Signal···································"L" (A and C Versions)
"H" (B Version)
• Detector Threshold Accuracy ·········± 2%
•
Temp. coeff. of Detector Threshold
··· Typ. ± 100ppm/°C
• Two Output Types·························· Nch. Open Drain and CMOS
• Packages·······································
SON1612-6, SC-82AB, SC-88A,
SOT-23-3,SOT-23-5, SOT-89, TO-92
BLOCK DIAGRAMS
R3111xxxxA
(Nch. open drain "L" output)
V
DD
OUT
GND
Vref
R3111xxxxB
(Nch. open drain "H" output)
V
DD
OUT
GND
Vref
R3111xxxxC
(CMOS "L" output)
V
DD
OUT
GND
Vref
SELECTION GUIDES TIMING CHART
Package Quantity per Reel Part No.
SON1612-6 4,000 pcs R3111D
.
xx
.
1
.
∗
-TR-F
SC-82AB 3,000 pcs R3111Q
.
xx
.
1
.
∗
-TR-F
SC-88A 3,000 pcs R3111Q
.
xx
.
2
.
∗
-TR-F
SOT-23-3 3,000 pcs R3111N
.
xx
.
2
.
∗
-TR-F
SOT-23-5 3,000 pcs R3111N
.
xx
.
1
.
∗
-TR-F
SOT-89 1,000 pcs R3111H
.
xx
.
1
.
∗
-T1-F
TO-92 2,500 pcs R3111E
.
xx
.
1
.
∗
-TZ-F
.
xx
.
: Specify the detector threshold within the range
0.9V (
.
09
.
) to 6.0V (
.
60
.
) in 0.1V steps.
.
∗
: Select the output type from (
.
A
.
) Nch. open drain "L" output,
(
.
B
.
) Nch. open drain "H" output or (
.
C
.
) CMOS "L" output.
Hysteresis
tPLH tPLH tPLH
GND
GND
VDDL
-
VDET
+VDET
Dete ctor Th reshol d
Minimu m Op erating
V oltage
Pull-up Voltage
Supply
Voltage
(VDD)
Output
Voltage
(VOUT)
R3111xxxxA R3111xxxxB R3111xxxxC
Released Voltage Hysteresis Hysteresis
PACKAGES (Top View)
SON1612-6 SC-82AB SC-88A SOT-23-3 SOT-23-5 SOT-89 TO-92
1 2 3
6 5 4
1 2
4 3
1 3
5 4
2
12
3
13
54
2
1 2 3
123
1 OUT
2 VDD
3 GND
4 NC
5 VDD
6 NC
1 OUT
2 VDD
3 NC
4 GND
1 OUT
2 NC
3 VDD
4 NC
5 GND
1OUT
2 GND
3VDD
1OUT
2VDD
3 GND
4 NC
5 NC
1 OUT
2 VDD
3 GND
1VDD
2 GND
3OUT
APPLICATIONS
• Microcontroller and logic circuit reset
• Battery checker
• Window comparator
• Wave shaping circuit
• Battery back-up circuit
• Power failure detector
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
●Shin-Yokohamaoffice(InternationalSales)
3-2-3,Shin-Yokohama,Kohoku-ku,YokohamaCity,Kanagawa222-8530,Japan
Phone:+81-45-477-1697Fax:+81-45-477-1698
RICOHEUROPE(NETHERLANDS)B.V.
●SemiconductorSupportCentre
Prof.W.H.Keesomlaan1,1183DLAmstelveen,TheNetherlands
P.O.Box114,1180ACAmstelveen
Phone:+31-20-5474-309Fax:+31-20-5474-791
RICOHELECTRONICDEVICESKOREACo.,Ltd.
11floor,Haesung1building,942,Daechidong,Gangnamgu,Seoul,Korea
Phone:+82-2-2135-5700Fax:+82-2-2135-5705
RICOHELECTRONICDEVICESSHANGHAICo.,Ltd.
Room403,No.2Building,690#BiBoRoad,PuDongNewdistrict,Shanghai201203,
People'sRepublicofChina
Phone:+86-21-5027-3200Fax:+86-21-5027-3299
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
●Taipeioffice
Room109,10F-1,No.51,HengyangRd.,TaipeiCity,Taiwan(R.O.C.)
Phone:+886-2-2313-1621/1622Fax:+886-2-2313-1623
http://www.ricoh.com/LSI/
1.Theproductsandtheproductspecificationsdescribedinthisdocumentaresubjecttochangeor
discontinuationofproductionwithoutnoticeforreasons
suchasimprovement.Therefore,before
decidingtousetheproducts,pleaserefertoRicohsalesrepresentativesforthelatest
informationthereon.
2.Thematerialsinthisdocumentmaynotbecopiedorotherwisereproducedinwholeorinpart
withoutpriorwrittenconsentofRicoh.
3.Pleasebesuretotakeanynecessaryformalitiesunderrelevantlawsorregulationsbefore
exportingorotherwisetakingoutofyourcountrytheproductsorthetechnicalinformation
describedherein.
4.Thetechnicalinformationdescribedinthisdocumentshowstypicalcharacteristicsofand
exampleapplicationcircuitsfortheproducts.Thereleaseofsuchinformationisnottobe
construedasawarrantyoforagrantoflicenseunderRicoh'soranythirdparty'sintellectual
propertyrightsoranyotherrights.
5.
Theproductslistedinthisdocumentareintendedanddesignedforuseasgeneralelectronic
componentsinstandardapplications(officeequipment,telecommunicationequipment,
measuringinstruments,consumerelectronicproducts,amusementequipmentetc.).Those
customersintendingtouse
aproductinanapplicationrequiringextremequalityandreliability,
forexample,inahighlyspecificapplicationwherethefailureormisoperationoftheproduct
couldresultinhumaninjuryordeath(aircraft,spacevehicle,nuclearreactorcontrolsystem,
trafficcontrolsystem,automotiveand
transportationequipment,combustionequipment,safety
devices,lifesupportsystemetc.)shouldfirstcontactus.
6.Wearemakingourcontinuousefforttoimprovethequalityandreliabilityofourproducts,but
semiconductorproductsarelikelytofailwithcertainprobability.Inordertopreventanyinjuryto
personsordamagestopropertyresultingfromsuchfailure,customersshouldbecarefulenough
toincorporatesafetymeasuresintheirdesign,suchasredundancyfeature,firecontainment
featureandfail-safefeature.Wedonotassumeanyliability
orresponsibilityforanylossor
damagearisingfrommisuseorinappropriateuseoftheproducts.
7.Anti-radiationdesignisnotimplementedintheproductsdescribedinthisdocument.
8.
PleasecontactRicohsalesrepresentativesshouldyouhaveanyquestionsorcomments
concerningtheproductsorthetechnicalinformation.
RICOHCOMPANY.,LTD.ElectronicDevicesCompany
■
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.