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S-81233资料

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Contents

Features..............................................................................................1Applications.........................................................................................1Pin Assignment...................................................................................1Block Diagram.....................................................................................1Selection Guide...................................................................................2Absolute Maximum Ratings.................................................................2Electrical Characteristics.....................................................................3Test Circuits........................................................................................11Technical Terms..................................................................................12Operation.............................................................................................13Transient Response............................................................................14Standard Circuit...................................................................................17Application Circuits..............................................................................17Notes on Design..................................................................................19Dimensions..........................................................................................20Markings..............................................................................................20Package Power Dissipation.................................................................21Taping Dimensions..............................................................................22Characteristics.....................................................................................25Measuring Circuits............................................................................... 31Frequently Asked Questions................................................................ 32

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HIGH-PRECISIONVOLTAGE REGULATORS-812XXSG SeriesThe S-812XXSG Series is a three-terminal positive voltage regulatormade using the CMOS process. Since the S-812XXSG Series hashigher precision output voltage and consumes less current than existingthree-terminal voltage regulators, battery-powered portable equipmentcan have a higher performance and a longer service life.

Features󰀁Block Diagram󰀁󰀁 Low power consumption (2.5 High accuracy of output voltage󰀂A max.)V*IN±2% : VVOUTOUT󰀃2.7 V±2.4% : V23OUT󰀁 Small input/output voltage difference󰀄2.6 V(S-81250SG: 160 mV typ. IOUT=10 mA)󰀁 Low temperature coefficient of output voltage+(S-81250SG: ±0.625 mV/󰀅C typ.)󰀁 Wide operating voltage range-RL(S-81250SG: 16 V max.)Ref.󰀁 Good line regulationGNDvol.(S-81250SG: 40 mV typ. IOUT=1󰀂A to 40 mA)1 TO-92, SOT-89-3 and SOT-23-5 package* Parasitic diodeFigure 1Applications󰀁 Constant voltage power supply of battery-powered equipment, communications equipment, video equipment

and others

Pin Assignment

(1)TO-92(2)SOT-89-3(3)SOT-23-51GNDTop viewTop View2VINNCNC3VOUT1GND2VIN3VOUT123GNDVINVOUT123Bottom viewFigure 2Seiko Instruments Inc.1

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HIGH PRECISION VOLTAGE REGULATORS-812XXSG Series

󰀁

Selection Guide

Table 1

Output voltage1.1󰀁2.4%1.5󰀁2.4%1.7󰀁2.4%1.8󰀁2.4%2.0󰀁2.4%2.1󰀁2.4%2.3󰀁2.4%2.4󰀁2.4%2.5󰀁2.4%2.7󰀁2.0%3.0󰀁2.0%3.3󰀁2.0%3.5󰀁2.0%3.6󰀁2.0%3.7󰀁2.0%4.0󰀁2.0%4.2󰀁2.0%4.5󰀁2.0%4.6󰀁2.0%4.7󰀁2.0%5.0󰀁2.0%5.2󰀁2.0%5.3󰀁2.0%5.4󰀁2.0%5.5󰀁2.0%5.6󰀁2.0%*

TO-92 *1S-81211SGY-XS-81215SGY-XSOT-89-3 *2S-81211SGUP-DQA-XS-81215SGUP-DQK-XSOT-23-5 *2S-81211SG-QA-XS-81215SG-QK-XS-81217SG-QQ-XS-81218SG-QR-XS-81220SG-QS-XS-81223SG-QW-XS-81224SG-QX-XS-81225SG-QH-XS-81230SG-QB-XS-81233SG-QF-XS-81235SG-QI-XS-81237SG-QE-XS-81240SG-QJ-XS-81242SG-IB-XS-81245SG-Q5-XS-81246SG-QM-XS-81247SG-IE-XS-81250SG-QD-XS-81252SG-QL-XS-81220SGY-XS-81223SGY-XS-81224SGY-XS-81225SGY-XS-81230SGY-XS-81233SGY-XS-81235SGY-XS-81237SGY-XS-81240SGY-XS-81245SGY-XS-81246SGY-XS-81250SGY-XS-81252SGY-XS-81220SGUP-DQS-XS-81221SGUP-DQU-XS-81224SGUP-DQX-XS-81225SGUP-DQH-XS-81227SGUP-DQZ-XS-81230SGUP-DQB-XS-81233SGUP-DQF-XS-81235SGUP-DQI-XS-81236SGUP-DQ7-XS-81237SGUP-DQE-XS-81240SGUP-DQJ-XS-81245SGUP-DQ5-XS-81246SGUP-DQM-XS-81250SGUP-DQD-XS-81252SGUP-DQL-XS-81253SGUP-DIJ-XS-81254SGUP-DIK-XS-81255SGUP-DIL-XS-81256SGUP-DIM-X1In the TO-92 package, “x” differs depending upon the packaging form:

B : LooseT, Z : Tape

2In the SOT package, “x” differs depending upon the packaging form (in the SOT-23-5 package, on-tapepacked products only):

S : Stick

T : Tape (T1 and T2 are available depending upon the direction of the IC)

󰀁Absolute Maximum Ratings

ParameterInput voltageOutput voltageOutput currentPower dissipationOperating temperatureStorage temperatureSymbolVINVOUTIOUTPDToprTstgTable 2

(Unless otherwise specified: Ta=25󰀂C)ConditionsVOUT󰀃2.6 VVOUT󰀄2.7 VRatings1218VIN+0.3 to VSS-0.3100400500150-40 to +85-40 to +125UnitVVmAmW󰀂C󰀂CTO-92SOT-89-3SOT-23-5Caution: Keep static electricity to a minimum.

2Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

Electrical Characteristics

S-81211SGY-X, S-81211SGUP-DQA-X, S-81211SG-QA-X (1.1-V output type)

Table 3

(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTest cir.Output voltageVOUTVIN =1.5 V, IOUT =0.5 mA1.0731.1001.127V1I/O voltage differenceVdifIOUT=0.5 mA󰀁0.050.2V1Line regulation 1󰀂VOUT1VIN =1.5 to 10 V1050mV1I󰀁OUT=0.5 mALine regulation 2󰀂VOUT2VIN =1.5 to 10 V󰀁1077mV1IOUT=10 󰀃ALoad regulation󰀂VOUT3VIN =1.5 V󰀁10100mV1IOUT=10 󰀃A to 0.5 mACurrent consumptionISSVIN =1.5 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁10V󰀁Temperature charac-󰀂VOUTVIN=1.5 V, IOUT = 0.5 mA󰀁±0.138󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C2. S-81215SGY-X, S-81215SGUP-DQK-X, S-81215SG-QK-X (1.5-V output type)Table 4(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTest cir.Output voltageVOUTVIN =3.5 V, IOUT =0.5 mA1.4641.5001.536V1I/O voltage differenceVdifIOUT=0.5 mA󰀁0.030.18V1Line regulation 1󰀂VOUT1VIN =2.5 to 10 VI󰀁739mV1OUT=0.5 mALine regulation 2󰀂VOUT2VIN =2.5 to 10 V󰀁7105mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =3.5 V󰀁80120mV1IOUT=1 󰀃A to10 mACurrent consumptionISSVIN =3.5 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁10V󰀁Temperature charac-󰀂VOUTVIN=3.5 V, IOUT = 0.5 mA󰀁±0.188󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C3. S-81217SG-QQ-X (1.7-V output type)Table 5(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTest cir.Output voltageVOUTVIN =3.7 V, IOUT =10 mA1.6591.7001.741V1I/O voltage differenceVdifIOUT=10 mA󰀁0.771.63V1Line regulation 1󰀂VOUT1VIN =2.7 to 10 VI󰀁843mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =2.7 to 10 V󰀁8119mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =3.7 V󰀁80120mV1IOUT=1 󰀃A to 10 mACurrent consumptionISSVIN =3.7 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁10V󰀁Temperature charac-󰀂VOUTVIN=3.7 V, IOUT = 10 mAteristic of 󰀂VOUT󰀂Ta󰀁±0.213󰀁mV/󰀄C󰀁Ta=-40󰀄C to 85󰀄CSeiko Instruments Inc.3

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HIGH PRECISION VOLTAGE REGULATORS-812XXSG Series

S-81218SG-QR-X (1.8-V output type)

Table 6

Table 7

Table 8

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

S-81223SGY-X, S-81223SG-QW-X (2.3-V output type)

Table 9

(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTest cir.Output voltageVOUTVIN =4.3 V, IOUT =10 mA2.2442.3002.356V1I/O voltage differenceVdifIOUT=10 mA󰀁0.531.20V1Line regulation 1󰀂VOUT1VIN =3.3 to 10 V󰀁954mV1IOUT=1 mALine regulation 2󰀂VOUT2VIN =3.3 to 10 V󰀁9161mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =4.3 V󰀁80120mV1IOUT=1 󰀃A to 10 mACurrent consumptionISSVIN =4.3 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁10V󰀁Temperature charac-󰀂VOUTVIN=4.3 V, IOUT = 10 mA󰀁±0.288󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C8.S-81224SGY-X, S-81224SGUP-DQX-X, S-81224SG-QX-X (2.4-V output type)

Table 10

(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTest cir.Output voltageVOUTVIN =4.4 V, IOUT =10 mA2.3422.4002.458V1I/O voltage differenceVdifIOUT=10 mA󰀁0.491.15V1Line regulation 1󰀂VOUT1VIN =3.4 to 10 VI󰀁1055mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =3.4 to 10 V󰀁10168mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =4.4 V󰀁80120mV1IOUT=1 󰀃A to 10 mACurrent consumptionISSVIN =4.4 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁10V󰀁Temperature charac-󰀂VOUTVIN=4.4 V, IOUT = 10 mA󰀁±0.300󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C9.S-81225SGY-X, S-81225SGUP-DQH-X, S-81225SG-QH-X (2.5-V output type)

Table 11

(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTest cir.Output voltageVOUTVIN =4.5 V, IOUT =10 mA2.4402.5002.560V1I/O voltage differenceVdifIOUT=10 mA󰀁0.591.32V1Line regulation 1󰀂VOUT1VIN =3.5 to 10 VI󰀁1057mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =3.5 to 10 V󰀁10175mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =4.5 V󰀁80120mV1IOUT=1 󰀃A to 10 mACurrent consumptionISSVIN =4.5 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁10V󰀁Temperature charac-󰀂VOUTVIN=4.5 V, IOUT = 10 mAteristic of 󰀂VOUT󰀂Ta󰀁±0.313󰀁mV/󰀄C󰀁Ta=-40󰀄C to 85󰀄CSeiko Instruments Inc.5

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

10.S-81227SGUP-DQZ-X (2.7-V output type)

Table 12ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=4.7 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =4.7 V, IOUT =10 mAIOUT=10 mAVIN =3.7 to 16 VIOUT=1 mAVIN =3.7 to 16 VIOUT=1 󰀃AVIN =4.7 VIOUT=1 󰀃A to 20 mAVIN =4.7 V, UnloadedMin.2.646󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.2.7000.523636801.2󰀁±0.338Max.2.7541.20721891202.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTest cir.111112󰀁󰀁11.S-81230SGY-X, S-81230SGUP-DQB-X, S-81230SG-QB-X (3.0-V output type)Table 13ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=5.0 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =5.0 V, IOUT =10 mAIOUT=10 mAVIN =4.0 to 16 VIOUT=1 mAVIN =4.0 to 16 VIOUT=1 󰀃AVIN =5 VIOUT=1 󰀃A to 20 mAVIN =5.0 V, UnloadedMin.2.940󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.3.0000.443939601.2󰀁±0.375Max.3.0601.04782101002.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTestcir.111112󰀁󰀁12.S-81233SGY-X, S-81233SGUP-DQF-X, S-81233SG-QF-X (3.3-V output type)Table 14ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=5.3 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =5.3 V, IOUT =10 mAIOUT=10 mAVIN =4.3 to 16 VIOUT=1 mAVIN =4.3 to 16 VIOUT=1 󰀃AVIN =5.3 VIOUT=1 󰀃A to 20 mAVIN =5.3 V, UnloadedMin.3.234󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.3.3000.374242601.2󰀁±0.413Max.3.3660.91842311002.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTestcir.111112󰀁󰀁6Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

13.S-81235SGY-X, S-81235SGUP-DQI-X, S-81235SG-QI-X (3.5-V output type)

Table 15

(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTestcir.Output voltageVOUTVIN =5.5 V, IOUT =10 mA3.4303.5003.570V1I/O voltage differenceVdifIOUT=10 mA󰀁0.340.84V1Line regulation 1󰀂VOUT1VIN =4.5 to 16 V88mV1I󰀁44OUT=1 mALine regulation 2󰀂VOUT2VIN =4.5 to 16 V󰀁44245mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =5.5 V󰀁60100mV1IOUT=1 󰀃A to 30 mACurrent consumptionISSVIN =5.5 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁16V󰀁Temperature charac-󰀂VOUTVIN=5.5 V, IOUT = 10 mA󰀁±0.438󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C14. S-81236SGUP-DQ7-X (3.6-V output type)Table 16(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTestcir.Output voltageVOUTVIN =5.6 V, IOUT =10 mA3.5283.6003.672V1I/O voltage differenceVdifIOUT=16 mA󰀁0.320.81V1Line regulation 1󰀂VOUT1VIN =4.6 to 16 VI󰀁4590mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =4.6 to 16 V󰀁45252mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =5.6 V󰀁60100mV1IOUT=1 󰀃A to 30 mACurrent consumptionISSVIN =5.6 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁16V󰀁Temperature charac-󰀂VOUTVIN=5.6 V, IOUT = 10 mA󰀁±0.450󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C15.S-81237SGY-X, S-81237SGUP-DQE-X, S-81237SG-QE-X (3.7-V output type)Table 17(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTestcir.Output voltageVOUTVIN =5.7 V, IOUT =10 mA3.6263.7003.774V1I/O voltage differenceVdifIOUT=10 mA󰀁0.310.78V1Line regulation 1󰀂VOUT1VIN =4.7 to 16 VI󰀁4692mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =4.7 to 16 V󰀁46259mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =5.7 V󰀁60100mV1IOUT=1 󰀃A to 30 mACurrent consumptionISSVIN =5.7 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁16V󰀁Temperature charac-󰀂VOUTVIN=5.7 V, IOUT = 10 mAteristic of 󰀂VOUT󰀂Ta󰀁±0.463󰀁mV/󰀄C󰀁Ta=-40󰀄C to 85󰀄CSeiko Instruments Inc.7

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

16.S-81240SGY-X, S-81240SGUP-DQJ-X, S-81240SG-QJ-X (4.0-V output type)

Table 18

ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=6.0 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =6.0 V, IOUT =10 mAIOUT=10 mAVIN =5.0 to 16 VIOUT=1 mAVIN =5.0 to 16 VIOUT=1 󰀃AVIN =6.0 VIOUT=1 󰀃A to 30 mAVIN =6.0 V, UnloadedMin.3.920󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.4.0000.274848501.2󰀁±0.500Max.4.0800.7096280902.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTestcir.111112󰀁󰀁17. S-81242SG-IB-X (4.2-V output type)Table 19ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=6.2 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =6.2V, IOUT =10 mAIOUT=10 mAVIN =5.2 to 16 VIOUT=1 mAVIN =5.2 to 16 VIOUT=1 󰀃AVIN =6.2 VIOUT=1 󰀃A to 30 mAVIN =6.2 V, UnloadedMin.4.116󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.4.2000.245050501.2󰀁±0.525Max.4.2840.65100294902.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTestcir.111112󰀁󰀁18.S-81245SGY-X, S-81245SGUP-DQ5-X, S-81245SG-Q5-X (4.5-V output type)Table 20ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=6.5 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =6.5 V, IOUT =10 mAIOUT=10 mAVIN =5.5 to 16 VIOUT=1 mAVIN =5.5 to 16 VIOUT=1 󰀃AVIN =6.5 VIOUT=1 󰀃A to 30 mAVIN =6.5 V, UnloadedMin.4.410󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.4.5000.215252501.2󰀁±0.563Max.4.5900.58104315902.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTestcir.111112󰀁󰀁8Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

19.S-81246SGY-X, S-81246SGUP-DQM-X, S-81246SG-QM-X (4.6-V output type)

Table 21(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTestcir.Output voltageVOUTVIN =6.6 V, IOUT =10 mA4.5084.6004.692V1I/O voltage differenceVdifIOUT=10 mA󰀁0.200.57V1Line regulation 1󰀂VOUT1VIN =5.6 to 16 V105mV1I󰀁53OUT=1 mALine regulation 2󰀂VOUT2VIN =5.6 to 16 V󰀁53322mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =6.6 V󰀁5090mV1IOUT=1 󰀃A to 30 mACurrent consumptionISSVIN =6.6 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁16V󰀁Temperature charac-󰀂VOUTVIN=6.6 V, IOUT = 10 mA󰀁±0.575󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C20.S-81247SG-IE-X (4.7-V output type)Table 22(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTestcir.Output voltageVOUTVIN =6.7 V, IOUT =10 mA4.6064.7004.794V1I/O voltage differenceVdifIOUT=10 mA󰀁0.190.55V1Line regulation 1󰀂VOUT1VIN =5.7 to 16 VI󰀁54107mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =5.7 to 16 V󰀁54329mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =6.7 V󰀁5090mV1IOUT=1 󰀃A to 30 mACurrent consumptionISSVIN =6.7 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁16V󰀁Temperature charac-󰀂VOUTVIN=6.7 V, IOUT = 10 mA󰀁±0.588󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C21.S-81250SGY-X, S-81250SGUP-DQD-X, S-81250SG-QD-X (5.0-V output type)Table 23(Unless otherwise specified: Ta=25󰀄C)ParameterSymbolConditionsMin.Typ.Max.UnitTestcir.Output voltageVOUTVIN =7.0 V, IOUT =10 mA4.9005.0005.100V1I/O voltage differenceVdifIOUT=10 mA󰀁0.160.50V1Line regulation 1󰀂VOUT1VIN =6.0 to 16 VI󰀁55110mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =6.0 to 16 V󰀁55350mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =7.0 V󰀁4080mV1IOUT=1 󰀃A to 40 mACurrent consumptionISSVIN =7.0 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁16V󰀁Temperature charac-󰀂VOUTVIN=7.0 V, IOUT = 10 mAteristic of 󰀂VOUT󰀂Ta󰀁±0.625󰀁mV/󰀄C󰀁Ta=-40󰀄C to 85󰀄CSeiko Instruments Inc.9

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

22.S-81252SGY-X, S-81252SGUP-DQL-X, S-81252SG-QL-X (5.2-V output type)

Table 24ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=7.2 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =7.2 V, IOUT =10 mAIOUT=10 mAVIN =6.2 to 16 VIOUT=1 mAVIN =6.2 to 16 VIOUT=1 󰀃AVIN =7.2 VIOUT=1 󰀃A to 40 mAVIN =7.2 V, UnloadedMin.5.096󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.5.2000.155757401.2󰀁±0.650Max.5.3040.47113364802.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTestcir.111112󰀁󰀁23.S-81253SGUP-DIJ-X (5.3-V output type)Table 25ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=7.3 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =7.3 V, IOUT =10 mAIOUT=10 mAVIN =6.3 to 16 VIOUT=1 mAVIN =6.3 to 16 VIOUT=1 󰀃AVIN =7.3 VIOUT=1 󰀃A to 40 mAVIN =7.3 V, UnloadedMin.5.194󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.5.3000.145757401.2󰀁±0.663Max.5.4060.45114371802.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTestcir.111112󰀁󰀁24.S-81254SGUP-DIK-X (5.4-V output type)Table 26ParameterOutput voltageI/O voltage differenceLine regulation 1Line regulation 2Load regulationCurrent consumptionInput voltageTemperature charac-teristic of 󰀂VOUTSymbolVOUTVdif󰀂VOUT1󰀂VOUT2󰀂VOUT3ISSVIN󰀂VOUT󰀂TaVIN=7.4 V, IOUT = 10 mATa=-40󰀄C to 85󰀄CConditionsVIN =7.4 V, IOUT =10 mAIOUT=10 mAVIN =6.4 to 16 VIOUT=1 mAVIN =6.4 to 16 VIOUT=1 󰀃AVIN =7.4 VIOUT=1 󰀃A to 40 mAVIN =7.4 V, UnloadedMin.5.292󰀁󰀁󰀁󰀁󰀁󰀁󰀁(Unless otherwise specified: Ta=25󰀄C)Typ.5.4000.135858401.2󰀁±0.675Max.5.5080.44115378802.516󰀁UnitVVmVmVmV󰀃AVmV/󰀄CTestcir.111112󰀁󰀁10Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

25.S-81255SGUP-DIL-X (5.5-V output type)

Table 27

(Unless otherwise specified: Ta=25 C)ParameterSymbolConditionsMin.Typ.Max.UnitTestcir.Output voltageVOUTVIN =7.5 V, IOUT =10 mA5.3905.5005.610V1I/O voltage differenceVdifIOUT=10 mA󰀁0.130.43V1Line regulation 1󰀂VOUT1VIN =6.5 to 16 VI󰀁58116mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =6.5 to 16 V󰀁58385mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =7.5 V󰀁4080mV1IOUT=1 󰀃A to 40 mACurrent consumptionISSVIN =7.5 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁16V󰀁Temperature charac-󰀂VOUTVIN=7.5 V, IOUT = 10 mA󰀁±0.688󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄C26.S-81256SGUP-DIM-X (5.6-V output type)

Table 28(Unless otherwise specified: Ta=25 C)ParameterSymbolConditionsMin.Typ.Max.UnitTestcir.Output voltageVOUTVIN =7.6 V, IOUT =10 mA5.4885.6005.712V1I/O voltage differenceVdifIOUT=10 mA󰀁0.120.42V1Line regulation 1󰀂VOUT1VIN =6.6 to 16 VI󰀁59117mV1OUT=1 mALine regulation 2󰀂VOUT2VIN =6.6 to 16 V󰀁59392mV1IOUT=1 󰀃ALoad regulation󰀂VOUT3VIN =7.6 V󰀁4080mV1IOUT=1 󰀃A to 40 mACurrent consumptionISSVIN =7.6 V, Unloaded󰀁1.22.5󰀃A2Input voltageVIN󰀁󰀁16V󰀁Temperature charac-󰀂VOUTVIN=7.6 V, IOUT = 10 mA󰀁±0.7󰀁mV/󰀄C󰀁teristic of 󰀂VOUT󰀂TaTa=-40󰀄C to 85󰀄CTest Circuits

12VINS-812XXSGVOUTVINVOUTAAS-812XXSGSeriesSeriesGNDGNDVVVFigure 3

Seiko Instruments Inc.11

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

󰀁

Technical Terms

Output voltage (VOUT)

The precision of output voltage is guaranteed at ±2.0% or ±2.4% under the prescribed conditions of input voltage,output voltage, and temperature, which differ with items. If these conditions are varied, output voltage value maychange into beyond the scope of precision of output voltage. See electrical characteristics and characteristicsdata for detail.2

Line regulations 1 and 2 (󰀁VOUT1, 󰀁VOUT2)

Indicates the input voltage dependencies of output voltage. That is, the values express how the output voltagechanges, when input voltage is changed under the condition that output current is fixed.3

Load regulation (󰀁VOUT3)

Indicates the output current dependencies of output voltage. That is, the values express how the output voltagechanges, when output current is changed under the condition that input voltage is fixed.4

I/O voltage defference (Vdif)

98% of VOUT is output when the voltage of VOUT+Vdif is applied. When Vdif is small, output keeps a constantvoltage in the small side of input voltage and large output current can be obtained.NOTE : Vdif is highly dependent on IOUT.

12Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

Operation

Basic operation

Figure 4 shows the block diagram of the S-812XXSG Series.The error amplifier compares a reference voltage VREF with apart of the output voltage fed back by the feedback resistorsRA and RB. It supplies the control transistor with the gatecurrent, necessary to keep a stable output voltage range notinfluenced by input voltage or temperature fluctuation.

2Internal circuit

2.1Reference voltage circuit

In a voltage regulator, the reference voltage circuit playsa very important role because any change will show updirectly at an output.

The S-812XXSG Series has 0.8 V typical stable voltagecircuit as a highly stable reference voltage source.Features:

󰀂󰀂 Low power consumption

Good temperature characteristic

2.2Error amplifier

The error amplifier consumes very low current because itis a differential amplifier in a stable current circuit.Features:

󰀂󰀂 󰀂 Good matching characteristics Wide operating voltage rangeLow offset voltage

2.3Control transistor

The S-812XXSG Series has a Pch MOS transistor as acurrent control transistor shown in Figure 6. Thereforean output current IOUT is expressed by the followingformula where is only a small difference between inputand output voltages:

IOUT=KP{2(VGS-VTP) (VIN-VOUT)-(VIN-VOUT)2

}*KP:Conductive coefficiency

VTP:Threshold voltage of a control transistorSetting KP to the large value results in a voltageregulator with 160 mV typical I/O voltage difference.

NOTE:A parasitic diode is generated between VIN and VOUT.

If the electric potential of VIN is higher than that ofVOUT, IC may break because of a reverse current.Keep VOUT less than VIN+0.3 V.

Seiko Instruments Inc.S-812XXSG Series

VINCurrentsourceReferencevoltage-circuit+*Error amplifierVOUTRARBGND* Parasitic diodeFigure 4 Reference block diagramVINVOUTVIN+VIN-BiasGNDFigure 5 Error amplifierVINVVGSREF-*+VOUTGND* Parasitic diode

Figure 6 Control transistor

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

Temperature characteristic of output voltage

The temperature characteristic of the output voltage is expressed by the following formula in the range of-40󰀃C to 85󰀃C.

VOUTVREFx (±0.1) mV/󰀃C typ.*VREF is 0.7 V min., 0.8 V typ., 0.9 V max.

󰀁Transient Response

Line transient response

The overshoot and undershoot are caused in the output voltage if the input voltage fluctuates while the outputcurrent is constant. Figure 7 shows the output voltage fluctuation due to input voltage change between 6.0 V and10 V in square wave. Table 19 shows the parameter dependency when input voltage fluctuates. For reference,Figure 8 describes the measurement circuit.

10 V

Input voltage

6.0

Output voltageOvershootUndershootFigure 7 Output voltage fluctuation due to input voltage fluctuation

Fast amplifierVINS-812XXSGVSSVOUT+-OscilloscopeP.G.

CLFigure 8 Measuring circuit

Table 29 Parameter dependency due to input voltage fluctuation

ParameterOutput currentIOUT󰀁VIN*Method to decreaseovershootDecreaseIncreaseDecrease󰀂*

Method to decreaseundershootDecreaseIncreaseDecreaseHigh temperatureLoad capacitanceCLInput voltage fluctuationTemperatureTa󰀁VIN: High voltage value - low voltage value

For reference, the next page describes the results of measuring the ringing amounts at the VOUT pin using the

output current (IOUT), load capacitance (CL), input voltage fluctuation width (󰀁VIN), and temperature as parameters.

14Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

Reference data

1.IOUT dependency

1.2 Line transient response of S-81250SG

2.CL dependency

1.21.0Ringing0.8amount

0.6(V)

0.40.2IOUT=10mATa=25󰀂CCL=10󰀁F1.0Ta=25󰀂CRinging0.8amount

0.6(V)

0.40.20.00-51015202530IOUT (mA)

0.00102030CL (󰀁F)

4050UndershootOvershoot3.󰀃VIN dependency

󰀃VIN shows the difference between the lowvoltage fixed to 6 V and the high voltage.

For example, 󰀃VIN = 2 V means the differencebetween 6 V and 8 V.CL=10󰀁F1.0Ta=25󰀂CIOUT=10mARinging0.8amount

0.6(V)

0.40.20.001

1.24.Temperature dependency

1.21.0Ringing0.8amount

0.6(V)

0.40.20.0-40

IOUT=10mACL=10󰀁F40Ta (󰀂C)

󰀃VIN (V)

UndershootOvershoot2.Load transient response

The overshoot and undershoot are caused in the output voltage if the output current fluctuates while the input

voltage is costant. Figure 9 shows the output voltage fluctuation due to output current change between 10mA and1 󰀁A in square wave. Table 20 shows the parameter dependency when output current fluctuates. For reference,Figure 10 describes the measuring circuit.

1󰀁A

Output current

10mA

Output voltageOvershootUndershootFigure 9 Output voltage fluctuation due to output current fluctuation

VINS-812XXSGVSSVOUTCLOscilloscopeFigure 10 Measuring circuit

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

Table 28 Parameter dependency due to output current fluctuationParameterOutput current fluctuation󰀁IOUTLoad capacitanceCLInput voltageTemperatureVINTaMethod to decreaseovershootDecreaseIncreaseIncrease󰀂Method to decreaseundershootDecreaseIncreaseIncrease󰀂For reference, the following describes the results of measuring the ringing amounts at the VOUT pin using the inputvoltage (VIN), load capacitance (CL), output current fluctuation width (󰀁IOUT), and temperature as parameters.

Load transient response of S-81250SG

Reference data

1.VIN dependency

0.62.CL dependency

0.50.4Ringing0.3amount(V)

0.20.1VIN=7VTa=25󰀃CCL=10󰀄F0.5Ta=25󰀃C0.4Ringing

amount0.3(V)

0.20.10.06

1012VIN (V)

0.001020304050

CL (󰀄F)

󰀁IOUT shows the difference between the lowcurrent fixed to 1 󰀄A and the high.

For example, 󰀁IOUT =10 mA means the differencebetween 10mA and 1 󰀄A.

1.2

0.50.4

Ringingamount0.3(V)

0.2

0.20.0

1015202530󰀁IOUT (mA)

0.1-40

40Ta (󰀃C)

UndershootOvershoot80

3.󰀁IOUT dependency4.Temperature dependency

CL=10󰀄F1.0Ta=25󰀃CVIN=7VRinging0.8amount

0.6(V)

0.4

VIN=7VCL=10󰀄F16Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

Standard Circuit

The basic circuit using the S-812XXSG Series is shown in Figure 11.

VIN2S-812XXSGVOUTSeries31CICOCommonCommon Single-point GND Figure 11Application Circuits

1.High output current positive voltage regulatorTr1Figure 12 shows a circuit for increasing the outputcurrent.VINVINS-812XXSGVOUTVOUTRSeriesGNDCommonFigure 12Short-circuit protection of Tr1 is possible byVINadding the sense resistor RRsTr1S and the PNPtransistor as shown in Figure 13.Tr2VINS-812XXSGVOUTRSeriesGNDCommonFigure 13Seiko Instruments Inc.17

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

Circuits for increasing output voltage

If the output voltage you need cannot be found in ourproduct line-up, the designs in Figures 14 or 15 willincrease output voltages easily.VOUT=Vxx 󰀄1󰀁R2󰀇󰀁Iss󰀈R2󰀉Vxx󰀄1󰀁󰀃󰀂󰀃󰀅R1󰀆󰀂R2󰀅󰀇R1󰀆VINVINS-812XXSGVOUTSeriesGNDVXXISSVOUTR1R2Because of its low current consumption, theS-812XXSG Series can set the resistor values, and R1and R2 high to lower the power consumption of wholesystems.Current flows to the Zener diode (Di) through thequiescent current (ISS) of the S-812XXSG Series, andthe GND terminal rises for the voltage of DI.When Di cannot drive with a quiescent current, theadded resistance R increases the current flowingthrough DI.Figure 14VINVINVOUTRS-812XXSGVOUTSeriesGNDISSDiFigure 153.Constant current regulator

The S-812XXSG Series can be used as a constant-current regulator within allowable dissipation limits.IOUT =VXXRA+ ISSGNDFigure 16 Constant current regulatorVINVINS-812XXSGVOUTSeriesVXXGNDISSRAIOUTRL4.Dual supply

A dual supply can be formed using the S-812XXSGSeries.Figure 17 shows a circuit example for receiving twooutputs (5 V and 8 V) with the S-81230SG and the S-81250SG. As the resistance R lets the quiescentcurrent of IC1 pass, R is unnecessary if the minimumoutput current of IC2 is more than the IC1 quiescentcurrent.ICVINIC2VINS-81250VOUTSGGNDGNDRS-81230VOUTSGGNDVINVOUT1+8 VVOUT2+5 VFigure 17 Dual power source18Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

󰀁

Notes on Design

󰀂 Voltage regulators may oscillate if small or zero capacity is connected to IC input when the impedance of the

power source is high and a large capacity is connected to IC output.󰀂 The S-812XXSG Series has no short-current circuit limiting. The element may break by exceed current of

errorneous short-current.󰀂 Keep the output current more than 10 󰀃A when using the product of VOUT󰀄2.6 V under the condition of high input

voltage and high temperature.󰀂 Do not apply any ripple voltage under the condition in Figure 18 to VIN terminal.

V [V]VPPff [Hz]VPP 󰀎 0.5 Vf 󰀎 1000 HzFigure 18󰀂 Mount diodes for IC protection, when connecting another power supply to VOUT terminal.

VINV / RGNDVOUTOUTFigure 19󰀂 When designing for mass production using an application circuit described here, keep the deviation of components

and temperature characteristic.

Seiko Instruments Inc.19

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

󰀁

Dimensions

(2)SOT-89-35.2 max.4.2 max.4.5󰀁0.21.6󰀁0.2Mark side5.0±0.22.5󰀁0.20.6 max.2.3max.0.8 min.0.8 max.12.7 min.0.45󰀁0.10.4󰀁0.10.45󰀁0.11.5󰀁0.1(0.4)1.27󰀁0.051.27󰀁0.052.51.5 max.(0.4)andare available45󰀂(0.2)0.4󰀁0.11.5󰀁0.10.4󰀁0.054.0-0.35+0.25(1)TO-921.5󰀁0.20.45󰀁0.1(3)SOT-23-52.9 (3.1 max.)0.451.62.8-0.3+0.20.4󰀁0.11.1󰀁0.10.95󰀁0.11.9󰀁0.20 min.0.95󰀁0.11.3 max.0.16-0.06+0.1Unit: mmFigure 20󰀁Markings

(2) SOT-89-3(1) White labelS1(1) TO-92(3) SOT-23-5(2) Blue labelFactory code801121212󰀄󰀁󰀂󰀃󰀄362S G131󰀁Product name󰀂Last digit of the year󰀃Lot No.󰀁Product name(abbreviation)󰀁Product name(abbreviation)󰀁 to 󰀂󰀃 to 󰀄Product name(abbreviation)Lot NO.󰀃:Alphabet󰀄:Dot on one side󰀂Lot NO.󰀂Lot NO.Figure 2120Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

󰀁

Package Power Dissipation

(1)TO-92(2)SOT-89-3600600PowerBefore mountedPowerBefore mountedDissipation400Dissipation400PDPD(mW)(mW)20020000050100150050100150 Ta (󰀃C) Ta (󰀃C)(3)SOT-23-5400300Before mountedPowerDissipationPD(mW)20010000255075100125150 Ta (󰀃C)Figure 22Seiko Instruments Inc.21

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

󰀁

Taping Dimensions

SOT-89-3

1.1Tape specifications

T1 and T2 types are available depending upon the direction of ICs on the tape.(1) White label (without a hole in the center of embossed area)

󰀁1.5-0+0.12.0󰀁0.054.0󰀁0.1(10 pitches : 40.0󰀁0.2)5󰀂 max.8.0󰀁0.13󰀂max.0.3󰀁0.052.0󰀁0.14.75󰀁0.1Figure 23

(2) Blue label (with a hole in the center of embossed area)

󰀁1.5-0+0.12.0󰀁0.054.0󰀁0.1(10 pitches : 40.0󰀁0.2)󰀁1.5-08.0󰀁0.1+0.15󰀂max.3󰀂max.0.3󰀁0.052.0󰀁0.14.75󰀁0.1Unit: mmT1

Feed directionFigure 24

Feed direction22Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

1.2Reel specifications

1 reel holds 1000 regulators.

16.5 Max.(dimension of external reel core)2󰀁0.210.5󰀁0.4(1.5)󰀁13󰀁0.2󰀁60 +1 0(60󰀂)(60󰀂)13.0󰀁0.3󰀁180 0-3(dimension of inner reel core)15.4󰀁1.0Figure 25Unit: mm1.3Magazine Dimensions1 stick holds 25 regulators.178.2󰀁0.15󰀁0.134.835353538.4Part ACounting mark (every five units)Part B3.35󰀁0.073.5󰀁0.073.5󰀁0.073.5󰀁0.073.5󰀁0.073.35󰀁0.070.52.81.45󰀁0.12.80.52.53.25󰀁0.14.1󰀁0.071.91.62.7󰀁0.0710.0󰀁0.10.50.52.83.153.85󰀁0.072.6󰀁0.11.45󰀁0.12.8“Part A” magnified“Part B” magnifiedUnit : mmFigure 26Seiko Instruments Inc.23

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

SOT-23-5

2.1Tape specifications

T1 and T2 types are available depending upon the direction of ICs on the tape.

+0.1+0.2-0󰀁1.5-0󰀁1.02.0󰀂0.054.0󰀂0.1(10 pitches : 40.0󰀂0.2)1.75󰀂0.13.5󰀂0.058.0󰀂0.23󰀁max.3󰀁max.4.0󰀂0.10.27󰀂0.051.4󰀂0.13.2󰀂0.1T1T2Unit : mm󰀁 Feed directionFigure 27

󰀁 Feed directionThe top cover tape comes in 2 tones ; opaque, semi-transparent and transparent.2.2Reel specifications

1 reel holds 3000 regulators.12.5 Max.(dimension of external reel core)2󰀂0.210.5󰀂0.4󰀁13󰀂0.2(1.5)󰀁60 +1 0(60󰀃)(60󰀃) 0󰀁1803󰀁9.0󰀂0.3(dimension of inner reel core)11.4󰀂1.024Seiko Instruments Inc.Figure 28Unit: mm易网www.cecb2b.com

HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

Characteristics

Input voltage - output voltage1.1S-81211SG series

1.2S-81215SG seriesVOUTVOUT(V)(V)1.2Ta=25󰀁C2.0Ta=25󰀁C1.1IOUT=0.5 mA1.8IOUT=0.5 mA1.0I1.6OUT=3 mAIOUT=1 mA0.9I1.4OUT=1 mA0.81.2IOUT=3 mA0.70.81.01.21.41.61.81.01.01.21.41.61.82.0VIN (V)VIN (V)1.3S-81220SG series

VOUT1.4S-81225SGseries

(V)2.2Ta=25󰀁CVOUT2.0IOUT=0.5 mA2.7(V)Ta=25󰀁CIOUT=0.5 mA1.82.5

IOUT=3 mA1.62.3IOUT=3 mAIOUT=1 mA1.42.1

IOUT=1 mA1.21.91.51.82.12.42.73.01.7VIN (V)

2.02.32.62.93.23.51.5S-81230SG series

VIN (V)

VOUT1.6S-81235SG series

3.2(V)Ta=25󰀁CVOUT3.0IOUT=1 mA4.0(V)Ta=25󰀁C2.83.82.6IOUT=20 mA3.6IOUT=10 mAIOUT=1 mA2.4IOUT=10 mA3.42.2

3.22.52.83.13.43.74.0IOUT=20 mAVIN (V)

3.03.03.33.63.94.24.51.7S-81240SG series

V1.8S-81245SG seriesVIN (V)OUT(V)VOUT4.2Ta=25󰀁C(V)5.0Ta=25󰀁C4.0IOUT=1 mA4.83.8IOUT=10 mA4.6IOUT=1 mA3.6IOUT=20 mA4.43.4IOUT=10 mA4.2IOUT=20 mA3.23.53.84.14.44.75.04.0V4.04.34.64.95.25.5IN (V)VIN (V)Seiko Instruments Inc.25

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

1.9S-81250SG series

VOUT(V)5.25.04.84.64.44.24.54.85.1VIN (V)IOUT=20 mAIOUT=10 mATa=25󰀁CIOUT=1 mA5.45.76.02.Output current - output voltage2.1S-81211SG seriesVOUT(V)1.2-40󰀁C2.2S-81215SG seriesVIN=1.5VVOUT(V)1.51.31.125󰀁C-40󰀁C25󰀁CVIN=3.5V1.11.00.985󰀁C0.90.785󰀁C0.80.7024IOUT (mA)68100.502040IOUT (mA)60801002.3S-81220SG seriesVOUT(V)2.01.81.61.41.21.0085󰀁C25󰀁C2.4S-81225SG seriesVIN=4.0VVOUT(V)2.52.32.11.91.760801001.502040IOUT (mA)608010085󰀁C-40󰀁C25󰀁CVIN=4.5V-40󰀁C2040IOUT (mA)2.5S-81230SG seriesVOUT(V)3.02.82.62.42.22.00204085󰀁C25󰀁C2.6S-81235SG seriesVIN=5.0V-40󰀁CVOUT(V)3.53.3VIN=5.5V-40󰀁C3.125󰀁C2.985󰀁C2.760801002.502040IOUT (mA)6080100IOUT (mA)

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

2.7S-81240SG seriesV2.8S-81245SG seriesOUT(V)VIN=6.0VVOUT(V)VIN=6.5V4.0-40󰀁C4.5-40󰀁C3.84.325󰀁C25󰀁C3.64.185󰀁C3.43.9853.2󰀁C3.73.00204060801003.5020406080100IOUT (mA)IOUT (mA)

2.9S-81250SG seriesVOUT(V)VIN=7.0V5.0-40󰀁C4.84.625󰀁C4.485󰀁C4.24.0020406080100IOUT (mA)

3.Output current - output voltage (at low load)3.1VOUT󰀂1.4V3.21.5V󰀂VOUT󰀂2.6VVOUTVOUT(V)(V)2.0Ta=85󰀁CTa=85󰀁C1.71.8VIN=10VVIN=8V1.6V1.6VIN=10VIN=6VVIN=8V1.4VIN=6V1.51.2VIN=4VVIN=4V1.00.0010.010.11101001.40.0010.010.1110100IOUT (mA)

IOUT (mA)

3.3VOUT󰀂2.7V

VOUT(V)3.1

VTa=85󰀁CIN=16VVIN=12V3.0

VIN=10VVIN=7V2.9

0.0010.010.1110100

IOUT (mA)

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

Input voltage - current consumptionS-81250SG seriesISS(󰀃A)2.01.085󰀁C25󰀁C-40󰀁C002468101214161820VIN (V)

5.Temperature characteristic of output voltages5.1VOUT 󰀄 1.3 V

* (%)

5.2 VOUT 󰀄 1.4 V

* (%)0.51.00.50-0.5-1.0-40

0-0.5-20020406080

-1.0-40-20020406080Ta (󰀁C)

Definite with fluctuation ratio based on the output voltage at Ta=25󰀁C

Ta (󰀁C)

6.I/O voltage difference characteristics6.1S-81211SG series

(Vinitial:Output voltage value at VIN=1.5 V and IOUT=0.5 mA)VOUT1.02Vinitial1.00

0.98

IOUT=2 mA6.2S-81215PG series

(Vinitial:Output voltage value at VIN=3.5 V and IOUT=0.5 mA)

VOUT1.02Vinitial1.00

0.980.96

IOUT=3 mAIOUT=5 mAIOUT=1 mAIOUT=5 mAIOUT=10 mAIOUT=0.5 mAIOUT=1 mATa=25󰀁CTa=25󰀁C0.960.940.920.900.0

0.2

0.40.60.8VIN-Vinitial (V)

1.0

0.940.920.900.0

0.2

0.40.60.8VIN-Vinitial (V)

1.0

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

6.3S-81220SG series

6.4S-81225SG series

(Vinitial:Output voltage value at(Vinitial:Output voltage value at VIN=4.0 V and IOUT=10 mA) VIN=4.5 V and IOUT=10 mA)VOUT1.02VOUT1.02VinitialIVinitialIOUT=1 mAOUT=1 mATa=25󰀁CTa=25󰀁C1.00

1.000.98

0.98IOUT=10 mAIOUT=10 mAIOUT=0.960.9620 mAIOUT=20 mA0.94

0.94IIOUT=5 mAIOUT=OUT=5 mA0.920.9230 mA0.900.0

0.2

0.40.60.81.0

0.900.00.20.40.60.81.0VIN-Vinitial (V)

VIN-Vinitial (V)

6.5S-81230SG series

6.6S-81235SG series

(Vinitial:Output voltage value at(Vinitial:Output voltage value at VIN=5.0 V and IOUT=10 mA) VIN=5.5 V and IOUT=10 mA)VOUT1.02

Vinitial

ITa=25󰀁CVOUT1.02OUT=1 mA1.00VinitialIOUT=1 mATa=25󰀁C1.000.980.98IOUT=IOUT=0.96I0.9610 mA20 mAOUT=10 mAIOUT=0.9420 mA0.94IOUT=5 mAIOUT=0.92IOUT=5 mAIOUT=30 mA0.9230 mA0.900.0

0.2

0.40.60.81.0

0.900.00.20.40.60.81.0VIN-Vinitial (V)

VIN-Vinitial (V)

6.7S-81240SG series

6.8S-81245SG series

(Vinitial:Output voltage value at(Vinitial:Output voltage value at VIN=6.0 V and IOUT=10 mA) VIN=6.5 V and IOUT=10 mA)

VOUTVOUTVinitial1.021.00IOUT=1 mATa=25󰀁CVinitial1.02IOUT=1 mA1.00IOUT=5 mATa=25󰀁C0.98I0.98

OUT=0.9610 mAIOUT=0.96IIOUT=OUT=0.945 mA20 mA0.9410 mAIOUT=20 mAIOUT=30 mA0.92IOUT=30 mA0.92

0.900.0

0.2

0.40.60.81.0

0.900.0

0.2

0.40.60.81.0

VIN-Vinitial (V)

6.9S-81250PG series

(Vinitial:Output voltage value at VIN=7.0 V and IOUT=10 mA)VOUTVinitial1.02IOUT=1 mA1.00IOUT=5 mATa=25󰀁C0.980.96IOUT=10 mAIOUT=30 mA0.940.92IOUT=20 mA0.900.00.20.40.60.81.0VIN-Vinitial (V)

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HIGH-PRECISION VOLTAGE REGULATORS-812XXSG Series

7.Temperature characteristic of I/O voltage difference

7.1S-81211SG series

Vdif(mV)

500IOUT=5 mA7.2S-81215SG series

Vdif(mV)

500400IOUT=3 mAIOUT=2 mAIOUT=1 mAIOUT=5 mA4003002001000-50-30-103002001000-50-30-10IOUT=3 mAIOUT=1 mAIOUT=0.5 mAIOUT=0.5 mA10305070901030507090Ta (󰀁C)Ta (󰀁C)7.3S-81220SG series

Vdif

(V)1.5

IOUT=30 mA7.4S-81225SG seriesVdif(V)1.5IOUT=30 mA1.0

IOUT=20 mA1.0IOUT=20 mAIOUT=10 mA0.5

IOUT=5 mAIOUT=1 mA0.5IOUT=10 mAIOUT=5 mA0

-50-30-10

1030507090

0-50-30-10IOUT=1 mA1030507090Ta (󰀁C)

Ta (󰀁C)7.5S-81230SG series

Vdif

(V)1.5IOUT=30 mA7.6S-81235SG series

Vdif

(V)1.5

IOUT=30 mA1.0IOUT=20 mA1.0

IOUT=20 mA0.5IOUT=10 mAIOUT=5 mA0.5

IOUT=10 mAIOUT=5 mA0-50-30-101030507090Ta (󰀁C)0

-50-30-10

1030507090

Ta (󰀁C)

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HIGH-PRECISION VOLTAGE REGULATOR

S-812XXSG Series

7.7S-81240SG seriesVdif1.5(V)1.0IOUT=30 mA7.8S-81245SG series

Vdif1.5(V)

1.0

IOUT=30 mAIOUT=20 mAIOUT=20 mA0.5IOUT=10 mAIOUT=5 mA0.5

IOUT=10 mA0-50-30-1010305070900

-50-30-10

IOUT=5 mA1030507090

Ta (󰀁C)Ta (󰀁C)

7.9S-81250SG series

Vdif1.5(V)

1.0

IOUT=30 mA0.5

IOUT=20 mAIOUT=10 mA0

-50-30-10IOUT=5 mA1030507090Ta (󰀁C)

󰀁Measuring Circuits

1. Input voltage - output voltageVINVVOUTVAIOUT2. Output current - output voltage

VINVOUTVARLGNDGND3. Current consumption

AVINVOUTGNDFigure 29

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Collection of Product FAQs

Author: Imura Yukihiro

A:Index:

Division name:01 ICCategory 1:Category 2:Cal No.:Related Documents:

11 Power Supply2. Voltage RegulatorsOverall

Public (Printing O.K.)A: General

Date: 99/05/31 (Monday) 11:50 (Modified:)

Question:

Why do people dislike using electrolytic capacitors?

Answer:

Because electrolytic capacitors may cause failure due to short-circuit or even burn when subjected to anovercurrent or overvoltage, an increasing number of users are declining to use electrolytic capacitors,as UL and other safety standards require that such products be incombustible. As a result, ceramiccapacitors of no short-circuit and made of nonflammable materials attract most users.

FAQ No.: 11S814005

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