Contents Features .............................................................................................. 1 Applications ......................................................................................... 1 Pin Assignment ................................................................................... 1 Block Diagram ..................................................................................... 1 Selection Guide ................................................................................... 2 Absolute Maximum Ratings ................................................................. 2 Electrical Characteristics ..................................................................... 3 Test Circuits ........................................................................................ 11 Technical Terms.................................................................................. 12 Operation............................................................................................. 13 Transient Response ............................................................................ 14 Standard Circuit................................................................................... 17 Application Circuits .............................................................................. 17 Notes on Design .................................................................................. 19 Dimensions.......................................................................................... 20 Markings.............................................................................................. 20 Package Power Dissipation ................................................................. 21 Taping Dimensions.............................................................................. 22 Characteristics..................................................................................... 25 Measuring Circuits............................................................................... 31 Frequently Asked Questions................................................................ 32 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series The S-812XXSG Series is a three-terminal positive voltage regulator made using the CMOS process. Since the S-812XXSG Series has higher precision output voltage and consumes less current than existing three-terminal voltage regulators, battery-powered portable equipment can have a higher performance and a longer service life. Features Low power consumption (2.5 A max.) High accuracy of output voltage 2% : VOUT2.7 V 2.4% : VOUT2.6 V Small input/output voltage difference (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 (S-81250SG: 16 V max.) Good line regulation (S-81250SG: 40 mV typ. IOUT=1A to 40 mA) TO-92, SOT-89-3 and SOT-23-5 package Block Diagram * VIN VOUT 2 3 + RL - Ref. GND vol. 1 * Parasitic diode Figure 1 Applications Constant voltage power supply of battery-powered equipment, communications equipment, video equipment and others Pin Assignment (1) TO-92 (2) SOT-89-3 1 GND (3) SOT-23-5 Top View NC NC Top view 2 VIN 1 GND 3 VOUT 2 VIN 3 VOUT 1 1 2 3 2 3 GND VIN VOUT Bottom view Figure 2 Seiko Instruments Inc. 1 HIGH PRECISION VOLTAGE REGULATOR S-812XXSG Series Selection Guide Table 1 Output voltage TO-92 *1 SOT-89-3 *2 SOT-23-5 *2 1.12.4% 1.52.4% 1.72.4% 1.82.4% S-81211SGY-X S-81215SGY-X S-81211SGUP-DQA-X S-81215SGUP-DQK-X S-81211SG-QA-X S-81215SG-QK-X S-81217SG-QQ-X S-81218SG-QR-X 2.02.4% 2.12.4% S-81220SGY-X S-81220SGUP-DQS-X S-81221SGUP-DQU-X S-81220SG-QS-X 2.32.4% 2.42.4% 2.52.4% 2.72.0% 3.02.0% 3.32.0% 3.52.0% 3.62.0% S-81223SGY-X S-81224SGY-X S-81225SGY-X 3.72.0% 4.02.0% S-81237SGY-X S-81240SGY-X S-81237SGUP-DQE-X S-81240SGUP-DQJ-X S-81245SGY-X S-81246SGY-X S-81245SGUP-DQ5-X S-81246SGUP-DQM-X S-81250SGY-X S-81252SGY-X S-81250SGUP-DQD-X S-81252SGUP-DQL-X S-81253SGUP-DIJ-X S-81254SGUP-DIK-X S-81230SGY-X S-81233SGY-X S-81235SGY-X 4.22.0% 4.52.0% 4.62.0% 4.72.0% 5.02.0% 5.22.0% 5.32.0% 5.42.0% 5.52.0% 5.62.0% S-81224SGUP-DQX-X S-81225SGUP-DQH-X S-81227SGUP-DQZ-X S-81230SGUP-DQB-X S-81233SGUP-DQF-X S-81235SGUP-DQI-X S-81236SGUP-DQ7-X S-81223SG-QW-X S-81224SG-QX-X S-81225SG-QH-X S-81230SG-QB-X S-81233SG-QF-X S-81235SG-QI-X S-81237SG-QE-X S-81240SG-QJ-X S-81242SG-IB-X S-81245SG-Q5-X S-81246SG-QM-X S-81247SG-IE-X S-81250SG-QD-X S-81252SG-QL-X S-81255SGUP-DIL-X S-81256SGUP-DIM-X * 1 In the TO-92 package, "x" differs depending upon the packaging form: B : Loose T, Z : Tape * 2 In the SOT package, "x" differs depending upon the packaging form (in the SOT-23-5 package, on-tape packed products only): S : Stick T : Tape (T1 and T2 are available depending upon the direction of the IC) Absolute Maximum Ratings Table 2 Parameter Input voltage Output voltage Output current Symbol VIN (Unless otherwise specified: Ta=25C) Conditions VOUT2.6 V VOUT2.7 V VOUT IOUT Unit 12 18 V V mA Power dissipation PD Operating temperature Topr VIN+0.3 to VSS-0.3 100 400 500 150 -40 to +85 Storage temperature Tstg -40 to +125 TO-92 SOT-89-3 SOT-23-5 Caution: Keep static electricity to a minimum. 2 Ratings Seiko Instruments Inc. mW C C HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Electrical Characteristics 1. S-81211SGY-X, S-81211SGUP-DQA-X, S-81211SG-QA-X (1.1-V output type) Table 3 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Current consumption Input voltage Temperature characteristic of VOUT Symbol VOUT Vdif V V V Conditions VIN =1.5 V, IOUT =0.5 mA IOUT=0.5 mA OUT1 VIN =1.5 to 10 V IOUT=0.5 mA OUT2 VIN =1.5 to 10 V IOUT=10 A OUT3 VIN IOUT ISS =1.5 V =10 A to 0.5 mA VIN =1.5 V, Unloaded VIN V Ta OUT VIN=1.5 V, IOUT = 0.5 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 1.073 1.100 1.127 V 1 0.05 0.2 V 1 10 50 mV 1 10 77 mV 1 10 100 mV 1 1.2 2.5 A 2 0.138 10 V mV/ C 2. S-81215SGY-X, S-81215SGUP-DQK-X, S-81215SG-QK-X (1.5-V output type) Table 4 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V IOUT=0.5 mA VIN =2.5 to 10 V IOUT=0.5 mA OUT2 VIN =2.5 to 10 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =3.5 V, IOUT =0.5 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =3.5 V =1 A to10 mA VIN =3.5 V, Unloaded VIN=3.5 V, IOUT = 0.5 mA Min. Typ. Max. 1.464 1.500 1.536 V 1 0.03 0.18 V 1 7 39 mV 1 7 105 mV 1 80 120 mV 1 1.2 2.5 A 10 V 0.188 Unit mV/ C Test cir. 2 Ta=-40 C to 85 C 3. S-81217SG-QQ-X (1.7-V output type) Table 5 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V IOUT=10 mA OUT1 OUT2 VIN =2.7 to 10 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =3.7 V, IOUT =10 mA VIN =2.7 to 10 V IOUT=1 mA Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =3.7 V =1 A to 10 mA VIN =3.7 V, Unloaded VIN=3.7 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 1.659 1.700 1.741 V 1 0.77 1.63 V 1 8 43 mV 1 8 119 mV 1 80 120 mV 1 1.2 2.5 A 10 V Seiko Instruments Inc. 0.213 mV/ C 2 3 HIGH PRECISION VOLTAGE REGULATOR S-812XXSG Series 4. S-81218SG-QR-X (1.8-V output type) Table 6 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Current consumption Input voltage Temperature characteristic of VOUT 5. Symbol VOUT Vdif V V V Conditions VIN =3.8 V, IOUT =10 mA IOUT=10 mA OUT1 VIN =2.8 to 10 V IOUT=1 mA OUT2 VIN =2.8 to 10 V IOUT=1 A OUT3 VIN IOUT ISS =3.8 V =1 A to 10 mA VIN =3.8 V, Unloaded VIN V Ta OUT VIN=3.8 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 1.756 1.800 1.843 V 1 0.72 1.55 V 1 8 45 mV 1 8 126 mV 1 80 120 mV 1 1.2 2.5 A 2 10 0.225 V mV/ C S-81220SGY-X, S-81220SGUP-DQS-X, S-81220SG-QS-X (2.0-V output type) Table 7 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation VOUT Vdif V V V VIN =4.0 V, IOUT =10 mA IOUT=10 mA VIN =3.0 to 10 V IOUT=1 mA OUT2 VIN =3.0 to 10 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN Conditions OUT1 Current consumption Temperature characteristic of VOUT 6. Symbol V Ta OUT =4.0 V =1 A to 10 mA VIN =4.0 V, Unloaded VIN=4.0 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 1.592 2.000 2.048 V 1 0.63 1.39 V 1 8 48 mV 1 8 140 mV 1 80 120 mV 1 1.2 2.5 A 2 10 V 0.250 mV/ C S-81221SGUP-DQU-X (2.1-V output type) Table 8 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation VOUT Vdif V V V IOUT=10 mA VIN =3.1 to 10 V IOUT=1 mA OUT2 VIN =3.1 to 10 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN Conditions VIN =4.1 V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT 4 Symbol V Ta OUT =4.1 V =1 A to 10 mA VIN =4.1 V, Unloaded VIN=4.1 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 2.049 2.100 2.151 V 1 0.59 1.32 V 1 9 50 mV 1 9 147 mV 1 80 120 mV 1 1.2 2.5 A 10 V Seiko Instruments Inc. 0.263 mV/ C 2 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 7. S-81223SGY-X, S-81223SG-QW-X (2.3-V output type) Table 9 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Current consumption Input voltage Temperature characteristic of VOUT 8. Symbol VOUT Vdif V V V Conditions VIN =4.3 V, IOUT =10 mA IOUT=10 mA OUT1 VIN =3.3 to 10 V IOUT=1 mA OUT2 VIN =3.3 to 10 V IOUT=1 A OUT3 VIN IOUT ISS =4.3 V =1 A to 10 mA VIN =4.3 V, Unloaded VIN V Ta OUT VIN=4.3 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 2.244 2.300 2.356 V 1 0.53 1.20 V 1 9 54 mV 1 9 161 mV 1 80 120 mV 1 1.2 2.5 A 2 10 0.288 V mV/ C S-81224SGY-X, S-81224SGUP-DQX-X, S-81224SG-QX-X (2.4-V output type) Table 10 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation VOUT Vdif V V V VIN =4.4 V, IOUT =10 mA IOUT=10 mA VIN =3.4 to 10 V IOUT=1 mA OUT2 VIN =3.4 to 10 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN Conditions OUT1 Current consumption Temperature characteristic of VOUT 9. Symbol V Ta OUT =4.4 V =1 A to 10 mA VIN =4.4 V, Unloaded VIN=4.4 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 2.342 2.400 2.458 V 1 0.49 1.15 V 1 10 55 mV 1 10 168 mV 1 80 120 mV 1 1.2 2.5 A 2 10 V 0.300 mV/ C S-81225SGY-X, S-81225SGUP-DQH-X, S-81225SG-QH-X (2.5-V output type) Table 11 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V VIN =3.5 to 10 V IOUT=1 mA OUT2 VIN =3.5 to 10 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN IOUT=10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions VIN =4.5 V, IOUT =10 mA V Ta OUT =4.5 V =1 A to 10 mA VIN =4.5 V, Unloaded VIN=4.5 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 2.440 2.500 2.560 V 1 0.59 1.32 V 1 10 57 mV 1 10 175 mV 1 80 120 mV 1 1.2 2.5 A 10 V Seiko Instruments Inc. 0.313 mV/ C 2 5 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 10. S-81227SGUP-DQZ-X (2.7-V output type) Table 12 (Unless otherwise specified: Ta=25 C) Parameter Symbol Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation VOUT Vdif V V V Current consumption Input voltage Temperature characteristic of VOUT Conditions VIN =4.7 V, IOUT =10 mA IOUT=10 mA OUT1 VIN =3.7 to 16 V IOUT=1 mA OUT2 VIN =3.7 to 16 V IOUT=1 A OUT3 VIN IOUT ISS =4.7 V =1 A to 20 mA VIN =4.7 V, Unloaded VIN V Ta OUT VIN=4.7 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 2.646 2.700 2.754 V 1 0.52 1.20 V 1 36 72 mV 1 36 189 mV 1 80 120 mV 1 1.2 2.5 A 2 16 0.338 V mV/ C 11. S-81230SGY-X, S-81230SGUP-DQB-X, S-81230SG-QB-X (3.0-V output type) Table 13 (Unless otherwise specified: Ta=25 C) Parameter Symbol Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation VOUT Vdif V V V Current consumption Input voltage Temperature characteristic of VOUT Conditions VIN =5.0 V, IOUT =10 mA IOUT=10 mA OUT1 VIN =4.0 to 16 V IOUT=1 mA OUT2 VIN =4.0 to 16 V IOUT=1 A OUT3 VIN IOUT ISS =5 V =1 A to 20 mA VIN =5.0 V, Unloaded VIN V Ta OUT VIN=5.0 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 2.940 3.000 3.060 V 1 0.44 1.04 V 1 39 78 mV 1 39 210 mV 1 60 100 mV 1 1.2 2.5 A 2 16 0.375 V mV/ C 12. S-81233SGY-X, S-81233SGUP-DQF-X, S-81233SG-QF-X (3.3-V output type) Table 14 (Unless otherwise specified: Ta=25 C) Parameter Symbol Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Current consumption Input voltage Temperature characteristic of VOUT 6 VOUT V V V Vdif Conditions VIN =5.3 V, IOUT =10 mA IOUT=10 mA OUT1 VIN =4.3 to 16 V IOUT=1 mA OUT2 VIN =4.3 to 16 V IOUT=1 A OUT3 VIN IOUT ISS =5.3 V =1 A to 20 mA VIN =5.3 V, Unloaded VIN V Ta OUT VIN=5.3 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 3.234 3.300 3.366 V 1 0.37 0.91 V 1 42 84 mV 1 42 231 mV 1 60 100 mV 1 1.2 2.5 A 2 Seiko Instruments Inc. 0.413 16 V mV/ C 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) Parameter Symbol Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation VOUT V V V Vdif IOUT=10 mA VIN =4.5 to 16 V IOUT=1 mA OUT2 VIN =4.5 to 16 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =5.5 V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =5.5 V =1 A to 30 mA VIN =5.5 V, Unloaded VIN=5.5 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 3.430 3.500 3.570 V 1 0.34 0.84 V 1 44 88 mV 1 44 245 mV 1 60 100 mV 1 1.2 2.5 A 16 V 0.438 mV/ C 2 14. S-81236SGUP-DQ7-X (3.6-V output type) Table 16 (Unless otherwise specified: Ta=25 C) Parameter Symbol Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation VOUT V V V Vdif IOUT=16 mA VIN =4.6 to 16 V IOUT=1 mA OUT2 VIN =4.6 to 16 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =5.6 V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =5.6 V =1 A to 30 mA VIN =5.6 V, Unloaded VIN=5.6 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 3.528 3.600 3.672 V 1 0.32 0.81 V 1 45 90 mV 1 45 252 mV 1 60 100 mV 1 1.2 2.5 A 16 V 0.450 mV/ C 2 15. S-81237SGY-X, S-81237SGUP-DQE-X, S-81237SG-QE-X (3.7-V output type) Table 17 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V IOUT=10 mA VIN =4.7 to 16 V IOUT=1 mA OUT2 VIN =4.7 to 16 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =5.7 V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =5.7 V =1 A to 30 mA VIN =5.7 V, Unloaded VIN=5.7 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 3.626 3.700 3.774 V 1 0.31 0.78 V 1 46 92 mV 1 46 259 mV 1 60 100 mV 1 1.2 2.5 A 16 V Seiko Instruments Inc. 0.463 mV/ C 2 7 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 16. S-81240SGY-X, S-81240SGUP-DQJ-X, S-81240SG-QJ-X (4.0-V output type) Table 18 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V IOUT=10 mA VIN =5.0 to 16 V IOUT=1 mA OUT2 VIN =5.0 to 16 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =6.0 V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =6.0 V =1 A to 30 mA VIN =6.0 V, Unloaded VIN=6.0 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 3.920 4.000 4.080 V 1 0.27 0.70 V 1 48 96 mV 1 48 280 mV 1 50 90 mV 1 1.2 2.5 A 16 V 0.500 mV/ C 2 17. S-81242SG-IB-X (4.2-V output type) Table 19 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V IOUT=10 mA VIN =5.2 to 16 V IOUT=1 mA OUT2 VIN =5.2 to 16 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =6.2V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =6.2 V =1 A to 30 mA VIN =6.2 V, Unloaded VIN=6.2 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 4.116 4.200 4.284 V 1 0.24 0.65 V 1 50 100 mV 1 50 294 mV 1 50 90 mV 1 1.2 2.5 A 16 V 0.525 mV/ C 2 18. S-81245SGY-X, S-81245SGUP-DQ5-X, S-81245SG-Q5-X (4.5-V output type) Table 20 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Current consumption Input voltage Temperature characteristic of VOUT 8 Symbol VOUT Vdif V V V Conditions VIN =6.5 V, IOUT =10 mA IOUT=10 mA OUT1 VIN =5.5 to 16 V IOUT=1 mA OUT2 VIN =5.5 to 16 V IOUT=1 A OUT3 VIN IOUT ISS =6.5 V =1 A to 30 mA VIN =6.5 V, Unloaded VIN V Ta OUT VIN=6.5 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 4.410 4.500 4.590 V 1 0.21 0.58 V 1 52 104 mV 1 52 315 mV 1 50 90 mV 1 1.2 2.5 A 2 Seiko Instruments Inc. 0.563 16 V mV/ C 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) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V IOUT=10 mA VIN =5.6 to 16 V IOUT=1 mA OUT2 VIN =5.6 to 16 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =6.6 V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =6.6 V =1 A to 30 mA VIN =6.6 V, Unloaded VIN=6.6 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 4.508 4.600 4.692 V 1 0.20 0.57 V 1 53 105 mV 1 53 322 mV 1 50 90 mV 1 1.2 2.5 A 16 V 0.575 mV/ C 2 20. S-81247SG-IE-X (4.7-V output type) Table 22 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Current consumption Input voltage Temperature characteristic of VOUT Symbol VOUT Vdif V V V Conditions VIN =6.7 V, IOUT =10 mA IOUT=10 mA OUT1 VIN =5.7 to 16 V IOUT=1 mA OUT2 VIN =5.7 to 16 V IOUT=1 A OUT3 VIN IOUT ISS =6.7 V =1 A to 30 mA VIN =6.7 V, Unloaded VIN V Ta OUT VIN=6.7 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 4.606 4.700 4.794 V 1 0.19 0.55 V 1 54 107 mV 1 54 329 mV 1 50 90 mV 1 1.2 2.5 A 2 16 0.588 V mV/ C 21. S-81250SGY-X, S-81250SGUP-DQD-X, S-81250SG-QD-X (5.0-V output type) Table 23 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Current consumption Input voltage Temperature characteristic of VOUT Symbol VOUT Vdif V V V Conditions VIN =7.0 V, IOUT =10 mA IOUT=10 mA OUT1 VIN =6.0 to 16 V IOUT=1 mA OUT2 VIN =6.0 to 16 V IOUT=1 A OUT3 VIN IOUT ISS =7.0 V =1 A to 40 mA VIN =7.0 V, Unloaded VIN V Ta OUT VIN=7.0 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 4.900 5.000 5.100 V 1 0.16 0.50 V 1 55 110 mV 1 55 350 mV 1 40 80 mV 1 1.2 2.5 A 2 Seiko Instruments Inc. 0.625 16 V mV/ C 9 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 22. S-81252SGY-X, S-81252SGUP-DQL-X, S-81252SG-QL-X (5.2-V output type) Table 24 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V IOUT=10 mA VIN =6.2 to 16 V IOUT=1 mA OUT2 VIN =6.2 to 16 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =7.2 V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =7.2 V =1 A to 40 mA VIN =7.2 V, Unloaded VIN=7.2 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 5.096 5.200 5.304 V 1 0.15 0.47 V 1 57 113 mV 1 57 364 mV 1 40 80 mV 1 1.2 2.5 A 16 V 0.650 mV/ C 2 23. S-81253SGUP-DIJ-X (5.3-V output type) Table 25 (Unless otherwise specified: Ta=25 C) Parameter Output voltage I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Symbol VOUT Vdif V V V IOUT=10 mA VIN =6.3 to 16 V IOUT=1 mA OUT2 VIN =6.3 to 16 V IOUT=1 A OUT3 VIN IOUT ISS Input voltage VIN VIN =7.3 V, IOUT =10 mA OUT1 Current consumption Temperature characteristic of VOUT Conditions V Ta OUT =7.3 V =1 A to 40 mA VIN =7.3 V, Unloaded VIN=7.3 V, IOUT = 10 mA Ta=-40 C to 85 C Min. Typ. Max. Unit Test cir. 5.194 5.300 5.406 V 1 0.14 0.45 V 1 57 114 mV 1 57 371 mV 1 40 80 mV 1 1.2 2.5 A 2 16 V 0.663 mV/ C 24. S-81254SGUP-DIK-X (5.4-V output type) Table 26 (Unless otherwise specified: Ta=25 C) Parameter Symbol Conditions Min. Typ. Max. Unit Test cir. Output voltage VOUT VIN =7.4 V, IOUT =10 mA 5.292 5.400 5.508 V 1 I/O voltage difference Vdif IOUT=10 mA 0.13 0.44 V 1 58 115 mV 1 58 378 mV 1 40 80 mV 1 1.2 2.5 A 2 16 V Line regulation 1 Line regulation 2 Load regulation OUT1 VIN =6.4 to 16 V IOUT=1 mA OUT2 VIN =6.4 to 16 V IOUT=1 A OUT3 VIN =7.4 V IOUT=1 A to 40 mA Current consumption ISS Input voltage VIN Temperature characteristic of VOUT 10 V V V V Ta OUT VIN =7.4 V, Unloaded VIN=7.4 V, IOUT = 10 mA Ta=-40 C to 85 C Seiko Instruments Inc. 0.675 mV/ C 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) Parameter Symbol Conditions Min. Typ. Max. Unit Test cir. Output voltage VOUT VIN =7.5 V, IOUT =10 mA 5.390 5.500 5.610 V 1 0.13 0.43 V 1 58 116 mV 1 58 385 mV 1 40 80 mV 1 1.2 2.5 A 16 V I/O voltage difference Line regulation 1 Line regulation 2 Load regulation Vdif OUT1 VIN =6.5 to 16 V IOUT=1 mA OUT2 VIN =6.5 to 16 V IOUT=1 A OUT3 VIN =7.5 V IOUT=1 A to 40 mA Current consumption ISS Input voltage VIN Temperature characteristic of VOUT IOUT=10 mA V V V VIN =7.5 V, Unloaded V Ta VIN=7.5 V, IOUT = 10 mA Ta=-40 C to 85 C OUT 0.688 mV/ C 2 26. S-81256SGUP-DIM-X (5.6-V output type) Table 28 (Unless otherwise specified: Ta=25 C) Parameter Symbol Conditions Min. Typ. Max. Unit Test cir. Output voltage VOUT VIN =7.6 V, IOUT =10 mA 5.488 5.600 5.712 V 1 0.12 0.42 V 1 59 117 mV 1 59 392 mV 1 40 80 mV 1 1.2 2.5 A 16 V I/O voltage difference Line regulation 1 Line regulation 2 Load regulation VIN =6.6 to 16 V IOUT=1 mA OUT2 VIN =6.6 to 16 V IOUT=1 A OUT3 VIN =7.6 V IOUT=1 A to 40 mA ISS Input voltage VIN IOUT=10 mA OUT1 Current consumption Temperature characteristic of VOUT Vdif V V V VIN =7.6 V, Unloaded V Ta VIN=7.6 V, IOUT = 10 mA Ta=-40 C to 85 C OUT 0.7 mV/ C 2 Test Circuits 1 2 VIN S-812XXSG Series VIN VOUT A A GND GND V VOUT S-812XXSG Series V V Figure 3 Seiko Instruments Inc. 11 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Technical Terms 1 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 may change into beyond the scope of precision of output voltage. See electrical characteristics and characteristics data 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 voltage changes, 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 voltage changes, 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 constant voltage in the small side of input voltage and large output current can be obtained. NOTE : Vdif is highly dependent on IOUT. 12 Seiko Instruments Inc. HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Operation 1 Basic operation VIN Figure 4 shows the block diagram of the S-812XXSG Series. The error amplifier compares a reference voltage VREF with a part of the output voltage fed back by the feedback resistors RA and RB. It supplies the control transistor with the gate current, necessary to keep a stable output voltage range not influenced by input voltage or temperature fluctuation. Current source Reference voltage circuit + * VOUT Error amplifier RA RB GND * Parasitic diode Figure 4 Reference block diagram 2 Internal circuit 2.1 Reference voltage circuit In a voltage regulator, the reference voltage circuit plays a very important role because any change will show up directly at an output. The S-812XXSG Series has 0.8 V typical stable voltage circuit as a highly stable reference voltage source. Features: Low power consumption Good temperature characteristic VIN VOUT VIN+ 2.2 Error amplifier VIN- The error amplifier consumes very low current because it is a differential amplifier in a stable current circuit. Features: Good matching characteristics Wide operating voltage range Low offset voltage Bias GND Figure 5 Error amplifier 2.3 Control transistor VIN The S-812XXSG Series has a Pch MOS transistor as a current control transistor shown in Figure 6. Therefore an output current IOUT is expressed by the following formula where is only a small difference between input and output voltages: IOUT=KP{2(VGS-VTP) (VIN-VOUT)-(VIN-VOUT)2 } * KP : Conductive coefficiency VTP : Threshold voltage of a control transistor VGS VREF - * + VOUT Setting KP to the large value results in a voltage regulator with 160 mV typical I/O voltage difference. GND NOTE: A parasitic diode is generated between VIN and VOUT. If the electric potential of VIN is higher than that of VOUT, IC may break because of a reverse current. Keep VOUT less than VIN+0.3 V. Seiko Instruments Inc. * Parasitic diode Figure 6 Control transistor 13 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 3 Temperature characteristic of output voltage The temperature characteristic of the output voltage is expressed by the following formula in the range of -40C to 85C. VOUT x (0.1) mV/C typ. VREF * VREF is 0.7 V min., 0.8 V typ., 0.9 V max. Transient Response 1. Line transient response The overshoot and undershoot are caused in the output voltage if the input voltage fluctuates while the output current is constant. Figure 7 shows the output voltage fluctuation due to input voltage change between 6.0 V and 10 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 Overshoot Output voltage Undershoot Figure 7 Output voltage fluctuation due to input voltage fluctuation Fast amplifier VIN S-812XXSG VSS P.G. VOUT CL Oscilloscope + - Figure 8 Measuring circuit Table 29 Parameter dependency due to input voltage fluctuation Parameter Output current IOUT Method to decrease overshoot Method to decrease undershoot Decrease Decrease Load capacitance CL Input voltage fluctuation Temperature VIN* Increase Increase Decrease Decrease High temperature Ta * 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. 14 Seiko Instruments Inc. HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Line transient response of S-81250SG Reference data 2. CL dependency 1. IOUT dependency 1.2 1.2 CL=10F 1.0 Ta=25C Ringing 0.8 amount 0.6 (V) Ringing 0.8 amount 0.6 (V) 0.4 0.4 0.2 0.2 0.0 0 IOUT=10mA Ta=25C 1.0 0.0 0 5 10 15 20 25 30 10 20 30 50 CL (F) IOUT (mA) - 40 3. VIN dependency Undershoot Overshoot 4. Temperature dependency VIN shows the difference between the low voltage fixed to 6 V and the high voltage. For example, VIN = 2 V means the difference between 6 V and 8 V. 1.2 1.2 CL=10F 1.0 Ta=25C IOUT=10mA Ringing 0.8 amount 0.6 (V) Ringing 0.8 amount 0.6 (V) 0.4 0.4 0.2 0.2 0.0 0 1 2 IOUT=10mA CL=10F 1.0 3 4 0.0 -40 5 0 VIN (V) 2. 40 Undershoot Overshoot 80 Ta (C) 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 and 1 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 Overshoot Output voltage Undershoot Figure 9 Output voltage fluctuation due to output current fluctuation VIN S-812XXSG VSS VOUT CL Oscilloscope + - Figure 10 Measuring circuit Seiko Instruments Inc. 15 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Table 28 Parameter dependency due to output current fluctuation Parameter Method to decrease overshoot Method to decrease undershoot Decrease Decrease Load capacitance CL Increase Increase Input voltage VIN Increase Increase Temperature Ta Output current fluctuation IOUT For reference, the following describes the results of measuring the ringing amounts at the VOUT pin using the input voltage (VIN), load capacitance (CL), output current fluctuation width (IOUT), and temperature as parameters. Load transient response of S-81250SG Reference data 1. VIN dependency 2. CL dependency 0.6 0.5 CL=10F 0.5 Ta=25C 0.4 Ringing amount 0.3 (V) 0.2 Ringing 0.3 amount (V) 0.2 0.1 0.1 0.0 6 8 VIN=7V Ta=25C 0.4 10 12 14 16 0.0 0 10 20 30 40 50 CL (F) VIN (V) 3. IOUT dependency IOUT shows the difference between the low current fixed to 1 A and the high. For example, IOUT =10 mA means the difference between 10mA and 1 A. 1.2 4. Temperature dependency 0.5 CL=10F 1.0 Ta=25C VIN=7V Ringing 0.8 amount 0.6 (V) VIN=7V CL=10F 0.4 Ringing amount 0.3 (V) 0.4 0.2 0.2 0.0 0 5 10 15 20 25 30 0.1 -40 IOUT (mA) 0 40 80 Ta (C) Undershoot Overshoot 16 Seiko Instruments Inc. HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Standard Circuit The basic circuit using the S-812XXSG Series is shown in Figure 11. VIN VOUT S-812XXSG Series 1 2 3 CI CO Common Common Single-point GND Figure 11 Application Circuits 1. High output current positive voltage regulator Tr1 Figure 12 shows a circuit for increasing the output current. VIN R VIN S-812XXSG VOUT Series VOUT GND Common Figure 12 Short-circuit protection of Tr1 is possible by adding the sense resistor RS and the PNP transistor as shown in Figure 13. VIN Rs Tr2 R Tr1 VIN S-812XXSG Series VOUT GND Common Figure 13 Seiko Instruments Inc. 17 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 2. Circuits for increasing output voltage If the output voltage you need cannot be found in our product line-up, the designs in Figures 14 or 15 will increase output voltages easily. R VOUT=Vxx 1 R2 Iss R2 Vxx 1 2 R1 R1 Because of its low current consumption, the S-812XXSG Series can set the resistor values, and R1 and R2 high to lower the power consumption of whole systems. Current flows to the Zener diode (Di) through the quiescent current (ISS) of the S-812XXSG Series, and the GND terminal rises for the voltage of DI. When Di cannot drive with a quiescent current, the added resistance R increases the current flowing through DI. VIN VIN S-812XXSG VOUT Series GND VXX ISS VOUT R1 R2 Figure 14 VIN VIN S-812XXSG VOUT Series GND VOUT R ISS Di Figure 15 3. Constant current regulator VIN VIN S-812XXSG VOUT Series VXX GND The S-812XXSG Series can be used as a constantcurrent regulator within allowable dissipation limits. IOUT = VXX RA RA ISS + ISS IOUT RL GND Figure 16 Constant current regulator 4. Dual supply A dual supply can be formed using the S-812XXSG Series. Figure 17 shows a circuit example for receiving two outputs (5 V and 8 V) with the S-81230SG and the S81250SG. As the resistance R lets the quiescent current of IC1 pass, R is unnecessary if the minimum output current of IC2 is more than the IC1 quiescent current. VIN VIN IC S-81230 VOUT SG IC2 VIN GND +5 V R GND Figure 17 Dual power source 18 Seiko Instruments Inc. +8 V VOUT2 S-81250 VOUT SG GND VOUT1 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 VOUT2.6 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] VPP f f [Hz] VPP 0.5 V f 1000 Hz Figure 18 Mount diodes for IC protection, when connecting another power supply to VOUT terminal. VIN V/R VOUT OUT GND Figure 19 When designing for mass production using an application circuit described here, keep the deviation of components and temperature characteristic. Seiko Instruments Inc. 19 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Dimensions (1) TO-92 (2) SOT-89-3 5.2 max. 4.50.2 4.2 max. 1.50.2 1.60.2 5.00.2 Mark side 2.50.2 +0.25 4.0 -0.35 2.3 max. 0.6 max. 0.8 min. 0.8 max. 12.7 min. 0.450.1 0.40.1 0.450.1 0.450.1 0.40.1 1.50.1 0.40.05 1.50.1 (0.4) 1.270.05 1.270.05 2.5 45 1.5 max. (0.2) (0.4) and are available (3) SOT-23-5 2.9 (3.1 max.) 0.45 +0.2 1.6 2.8 -0.3 +0.1 0.40.1 1.10.1 0.16 -0.06 1.3 max. 0 min. 0.950.1 0.950.1 Unit: mm 1.90.2 Figure 20 Markings (1) TO-92 (2) SOT-89-3 (3) SOT-23-5 (1) White label S 8 1 2 3 0 S G 6 1 1 1 (2) Blue label Factory code 1 2 2 1 Last digit of the year Product name (abbreviation) Lot NO. Product name (abbreviation) Lot NO. Figure 21 20 2 3 Product name Lot No. 1 Seiko Instruments Inc. to to Product name (abbreviation) Lot NO. : Alphabet : Dot on one side HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Package Power Dissipation (1) TO-92 (2) SOT-89-3 600 600 Before mounted Power 400 Dissipation PD (mW) Before mounted Power 400 Dissipation PD (mW) 200 200 0 0 0 50 100 Ta (C) 150 0 50 100 Ta (C) 150 (3) SOT-23-5 400 Before mounted 300 Power Dissipation PD 200 (mW) 100 0 0 25 50 75 100 Ta (C) 125 150 Figure 22 Seiko Instruments Inc. 21 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Taping Dimensions 1. SOT-89-3 1.1 Tape 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) +0.1 1.5 -0 4.00.1(10 pitches : 40.00.2) 2.00.05 3max. 0.30.05 8.00.1 5 max. 2.00.1 4.750.1 Figure 23 (2) Blue label (with a hole in the center of embossed area) +0.1 1.5 -0 2.00.05 4.00.1(10 pitches : 40.00.2) +0.1 1.5 -0 3max. 0.30.05 8.00.1 5max. 2.00.1 4.750.1 Unit: mm T1 T2 Feed direction Feed direction Figure 24 22 Seiko Instruments Inc. HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 1.2 Reel specifications 1 reel holds 1000 regulators. 16.5 Max. (dimension of external reel core) 20.2 10.50.4 130.2 (1.5) 60 +1 0 (60) (60) 13.00.3 0 180 -3 (dimension of inner reel core) 15.41.0 Figure 25 Unit: mm 1.3 Magazine Dimensions 1 stick holds 25 regulators. 50.1 178.20.1 34.8 35 35 35 38.4 Part B Counting mark (every five units) Part A 3.350.07 3.50.07 3.50.07 0.5 2.8 3.50.07 3.50.07 1.450.1 2.5 3.350.07 2.8 0.5 3.250.1 4.10.07 1.9 2.70.07 1.6 10.00.1 0.5 0.5 2.8 3.15 3.850.07 2.60.1 1.450.1 2.8 "Part B" magnified "Part A" magnified Unit : mm Figure 26 Seiko Instruments Inc. 23 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 2. SOT-23-5 2.1 Tape specifications T1 and T2 types are available depending upon the direction of ICs on the tape. +0.1 1.5 -0 1.0 +0.2 -0 2.00.05 4.00.1(10 pitches : 40.00.2) 1.750.1 3.50.05 8.00.2 3max. 4.00.1 3max. 0.270.05 1.40.1 3.20.1 T1 Unit : mm T2 Feed direction Feed direction Figure 27 The top cover tape comes in 2 tones ; opaque, semi-transparent and transparent. 2.2 Reel specifications 1 reel holds 3000 regulators. 12.5 Max. (dimension of external reel core) 20.2 10.50.4 (1.5) 130.2 60 +1 0 (60) (60) 9.00.3 0 180 3 (dimension of inner reel core) 11.41.0 24 Figure 28 Seiko Instruments Inc. Unit: mm HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series Characteristics 1 Input voltage - output voltage 1.1 S-81211SG series VOUT (V) 1.2 1.2 S-81215SG series VOUT (V) 2.0 Ta=25C IOUT=0.5 mA 1.1 Ta=25C 1.8 IOUT=0.5 mA 1.0 1.6 IOUT=3 mA IOUT=1 mA 1.4 0.9 IOUT=1 mA IOUT=3 mA 0.8 1.2 0.7 0.8 1.0 1.2 VIN (V) 1.4 1.6 1.8 1.0 1.0 1.2 1.4 VIN (V) 1.6 1.8 2.0 3.2 3.5 1.3 S-81220SG series 1.4 S-81225SG series VOUT (V) 2.2 VOUT (V) 2.7 Ta=25C IOUT=0.5 mA 2.0 Ta=25C IOUT=0.5 mA 2.5 1.8 IOUT=3 mA 2.3 IOUT=3 mA 1.6 IOUT=1 mA 2.1 1.4 IOUT=1 mA 1.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 1.7 VIN (V) 2.0 2.3 1.5 S-81230SG series VOUT (V) 3.2 Ta=25C 3.0 IOUT=1 mA 2.6 2.9 VIN (V) 1.6 S-81235SG series VOUT (V) 4.0 Ta=25C 3.8 2.8 2.6 IOUT=10 mA 3.6 IOUT=20 mA IOUT=1 mA 2.4 2.2 3.4 IOUT=10 mA 3.2 2.5 2.8 3.1 3.4 3.7 4.0 1.7 S-81240SG series VOUT (V) 4.2 Ta=25C 4.0 IOUT=1 mA 3.0 3.3 3.6 3.9 4.2 4.5 VIN (V) 1.8 S-81245SG series VOUT (V) 5.0 Ta=25C 4.8 IOUT=10 mA 3.8 4.6 3.6 IOUT=20 mA 3.8 4.1 VIN (V) 4.4 4.7 IOUT=1 mA 4.4 IOUT=10 mA 3.4 3.2 3.5 IOUT=20 mA 3.0 VIN (V) IOUT=20 mA 4.2 5.0 4.0 4.0 Seiko Instruments Inc. 4.3 4.6 VIN (V) 4.9 5.2 5.5 25 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 1.9 S-81250SG series VOUT (V) 5.2 Ta=25C 5.0 IOUT=1 mA 4.8 IOUT=20 mA 4.6 IOUT=10 mA 4.4 4.2 4.5 2. 4.8 5.1 VIN (V) 5.4 5.7 6.0 Output current - output voltage 2.1 S-81211SG series 2.2 S-81215SG series VOUT (V) 1.2 VOUT (V) 1.5 VIN=1.5V VIN=3.5V -40C 1.1 1.3 1.0 1.1 0.9 0.9 25C 85C -40C 25C 0.8 85C 0.7 0.7 0 2 4 IOUT (mA) 6 8 10 2.3 S-81220SG series 0.5 0 20 40 IOUT (mA) 60 80 2.4 S-81225SG series VOUT (V) 2.0 VIN=4.0V 1.8 -40C 1.6 VOUT (V) 2.5 VIN=4.5V 2.3 2.1 -40C 25C 1.4 1.9 85C 1.2 1.0 0 20 40 IOUT (mA) 100 85C 25C 1.7 60 80 100 2.5 S-81230SG series 1.5 0 20 40 IOUT (mA) 60 80 100 2.6 S-81235SG series VOUT (V) 3.0 VIN=5.0V -40C 2.8 VOUT (V) 3.5 VIN=5.5V 3.3 -40C 2.6 3.1 25C 2.4 25C 2.9 85C 2.2 2.0 85C 0 20 40 2.7 60 80 100 2.5 IOUT (mA) 26 Seiko Instruments Inc. 0 20 40 IOUT (mA) 60 80 100 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 2.7 S-81240SG series 2.8 S-81245SG series VOUT (V) 4.0 VOUT (V) 4.5 VIN=6.0V -40C 3.8 VIN=6.5V -40C 25C 4.3 25C 3.6 4.1 3.4 85C 3.9 85C 3.2 3.0 3.7 0 20 40 60 80 100 3.5 0 20 IOUT (mA) 40 60 80 100 IOUT (mA) 2.9 S-81250SG series VOUT (V) 5.0 VIN=7.0V -40C 4.8 4.6 25C 4.4 85C 4.2 4.0 0 20 40 60 80 100 IOUT (mA) 3. Output current - output voltage (at low load) 3.1 VOUT1.4V 3.2 1.5VVOUT2.6V VOUT (V) 2.0 VOUT (V) Ta=85C VIN=10V 1.8 Ta=85C 1.7 VIN=8V 1.6 1.6 VIN=6V VIN=10V VIN=8V VIN=6V 1.4 1.5 1.2 VIN=4V VIN=4V 1.0 0.001 0.01 0.1 1 10 100 1.4 IOUT (mA) 0.001 0.01 0.1 1 10 100 IOUT (mA) 3.3 VOUT2.7V VOUT (V) 3.1 Ta=85C VIN=16V VIN=12V 3.0 VIN=10V VIN=7V 2.9 0.001 0.01 0.1 1 10 100 IOUT (mA) Seiko Instruments Inc. 27 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 4. Input voltage - current consumption S-81250SG series ISS (A) 2.0 85C 25C 1.0 -40C 0 5. 0 2 4 6 8 10 12 14 16 18 20 VIN (V) Temperature characteristic of output voltages 5.1 VOUT 1.3 V * 5.2 * (%) VOUT 1.4 V (%) 0.5 1.0 0.5 0 0 -0.5 -0.5 -1.0 -40 * 6. -20 0 20 40 60 80 -1.0 -40 -20 20 40 60 Ta (C) Ta (C) Definite with fluctuation ratio based on the output voltage at Ta=25C I/O voltage difference characteristics 6.1 S-81211SG series 6.2 S-81215PG series (Vinitial:Output voltage value at VIN=1.5 V and IOUT=0.5 mA) VOUT 1.02 Vinitial 1.00 IOUT=0.5 mA IOUT=1 mA (Vinitial:Output voltage value at VIN=3.5 V and IOUT=0.5 mA) VOUT 1.02 Vinitial 1.00 Ta=25C 0.98 Ta=25C 0.98 IOUT=2 mA IOUT=1 mA 0.96 0.96 IOUT=3 mA IOUT=5 mA 0.94 0.94 IOUT=5 mA 0.92 0.90 0.0 28 0 IOUT=10 mA 0.92 0.2 0.4 0.6 0.8 VIN-Vinitial (V) 1.0 0.90 0.0 Seiko Instruments Inc. 0.2 0.4 0.6 0.8 VIN-Vinitial (V) 1.0 80 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 6.4 S-81225SG series 6.3 S-81220SG series (Vinitial:Output voltage value at VIN=4.5 V and IOUT=10 mA) VOUT 1.02 IOUT=1 mA Ta=25C Vinitial 1.00 (Vinitial:Output voltage value at VIN=4.0 V and IOUT=10 mA) VOUT 1.02 Ta=25C IOUT=1 mA Vinitial 1.00 0.98 0.98 IOUT=10 mA IOUT=10 mA IOUT= 20 mA 0.96 0.96 IOUT=20 mA 0.94 0.94 IOUT=5 mA 0.90 0.0 0.2 0.4 0.6 0.8 VIN-Vinitial (V) 1.0 0.90 0.0 Ta=25C IOUT=1 mA 1.00 0.98 0.98 0.96 0.96 IOUT=10 mA IOUT= 20 mA 0.94 0.92 IOUT= 5 mA 0.4 0.6 0.8 VIN-Vinitial (V) 1.0 0.90 0.0 VOUT 1.02 Vinitial Ta=25C IOUT=1 mA 0.94 0.96 IOUT= 20 mA 0.94 IOUT=30 mA 0.2 1.0 IOUT=5 mA Ta=25C 0.98 0.92 0.90 0.0 IOUT=1 mA 1.00 IOUT= 10 mA IOUT= 5 mA 0.4 0.6 0.8 VIN-Vinitial (V) (Vinitial:Output voltage value at VIN=6.5 V and IOUT=10 mA) 1.00 0.96 0.2 IOUT= 20 mA 6.8 S-81245SG series (Vinitial:Output voltage value at VIN=6.0 V and IOUT=10 mA) 0.98 1.0 IOUT= 30 mA 0.92 6.7 S-81240SG series VOUT 1.02 Vinitial 0.4 0.6 0.8 VIN-Vinitial (V) IOUT= 10 mA 0.94 IOUT= 30 mA IOUT=5 mA 0.2 0.2 (Vinitial:Output voltage value at VIN=5.5 V and IOUT=10 mA) 1.02 VOUT Ta=25C IOUT=1 mA Vinitial 1.00 (Vinitial:Output voltage value at VIN=5.0 V and IOUT=10 mA) 1.02 0.90 0.0 IOUT= 30 mA 6.6 S-81235SG series 6.5 S-81230SG series VOUT Vinitial IOUT=5 mA 0.92 0.92 0.4 0.6 0.8 VIN-Vinitial (V) IOUT= 10 mA IOUT= 20 mA IOUT=30 mA 0.92 1.0 0.90 0.0 0.2 0.4 0.6 0.8 VIN-Vinitial (V) 1.0 6.9 S-81250PG series (Vinitial:Output voltage value at VIN=7.0 V and IOUT=10 mA) VOUT 1.02 Vinitial IOUT=1 mA 1.00 IOUT=5 mA Ta=25C 0.98 0.96 IOUT= 10 mA IOUT=30 mA 0.94 0.92 IOUT=20 mA 0.90 0.0 0.2 0.4 0.6 0.8 VIN-Vinitial (V) 1.0 Seiko Instruments Inc. 29 HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 7. Temperature characteristic of I/O voltage difference 7.2 S-81215SG series 7.1 S-81211SG series Vdif (mV) Vdif (mV) 500 500 IOUT=5 mA 400 IOUT=5 mA 400 IOUT=3 mA 300 IOUT=3 mA 300 IOUT=2 mA 200 200 IOUT=1 mA 100 IOUT=1 mA 100 IOUT=0.5 mA 0 -50 -30 -10 10 30 50 IOUT=0.5 mA 70 90 0 -50 -30 -10 10 30 50 70 Ta (C) 7.3 S-81220SG series 90 Ta (C) 7.4 S-81225SG series Vdif (V) 1.5 Vdif (V) 1.5 IOUT=30 mA IOUT=30 mA 1.0 1.0 IOUT=20 mA IOUT=20 mA IOUT=10 mA 0.5 0.5 IOUT=10 mA IOUT=5 mA 0 -50 -30 -10 IOUT=5 mA IOUT=1 mA IOUT=1 mA 10 30 50 70 90 0 -50 -30 -10 10 30 50 90 Ta (C) Ta (C) 7.5 S-81230SG series 70 7.6 S-81235SG series Vdif (V) 1.5 Vdif (V) 1.5 IOUT=30 mA IOUT=30 mA 1.0 1.0 IOUT=20 mA IOUT=20 mA IOUT=10 mA 0.5 0.5 IOUT=10 mA IOUT=5 mA 0 -50 -30 -10 30 10 30 50 70 90 Ta (C) IOUT=5 mA 0 -50 -30 -10 Seiko Instruments Inc. 10 30 50 70 90 Ta (C) HIGH-PRECISION VOLTAGE REGULATOR S-812XXSG Series 7.7 S-81240SG series 7.8 S-81245SG series Vdif 1.5 (V) Vdif 1.5 (V) IOUT=30 mA 1.0 1.0 IOUT=30 mA IOUT=20 mA IOUT=20 mA 0.5 0.5 IOUT=10 mA IOUT=10 mA IOUT=5 mA 0 -50 -30 -10 10 30 50 70 0 -50 -30 -10 90 IOUT=5 mA 10 30 50 Ta (C) 70 90 Ta (C) 7.9 S-81250SG series Vdif 1.5 (V) 1.0 IOUT=30 mA IOUT=20 mA 0.5 IOUT=10 mA IOUT=5 mA 0 -50 -30 -10 10 30 50 70 90 Ta (C) Measuring Circuits 2. Output current - output voltage 1. Input voltage - output voltage VIN A VOUT IOUT VIN A VOUT RL V V GND GND V 3. Current consumption A VIN VOUT GND Figure 29 Seiko Instruments Inc. 31 Collection of Product FAQs Author: Imura Yukihiro Date: 99/05/31 (Monday) 11:50 (Modified:) <Information level> A: Public (Printing O.K.) Index: A: General <Product> Division name: 01 IC Category 1: 11 Power Supply Category 2: 2. Voltage Regulators Cal No.: Overall Related Documents: 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 an overcurrent 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, ceramic capacitors of no short-circuit and made of nonflammable materials attract most users. <Remarks> FAQ No.: 11S814005 32