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BLOCK DIAGRAM OSC VIN VOUT EXT Vref PWM/VFM CONTROL Protection Soft Start Chip Enable Vref VDOUT GND 2 CE R1221N SELECTION GUIDE ,Q#WKH#545541#6HULHV/#WKH#RXWSXW#YROWDJH/#WKH#GHWHFWRU#WKUHVKROG/#WKH#RVFLOODWRU#IUHTXHQF\/#WKH#RSWLRQDO#IXQFWLRQ/#DQG WKH#WDSLQJ#W\SH#IRU#WKH#,&V#FDQ#EH#VHOHFWHG#DW#WKH#XVHU*V#UHTXHVW1 7KH#VHOHFWLRQ#FDQ#EH#PDGH#E\#GHVLJQDWLQJ#WKH#SDUW#QXPEHU#DV#VKRZQ#EHORZ> 545541;;;;075 ↑ ↑↑ D EF Code D Contents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(;7#3LQ#,QGXFWRU#'ULYH#2XWSXW#&XUUHQW “58 P$ 3' 3RZHU#'LVVLSDWLRQ 583 P: 7RSW 2SHUDWLQJ#7HPSHUDWXUH#5DQJH 073∼.;8 ƒ& 7VWJ 6WRUDJH#7HPSHUDWXUH#5DQJH 088∼.458 ƒ& R1221N ELECTRICAL CHARACTERISTICS • R1221N***A (C,E,G) Output Voltage : Vo, Detector Threshold : VD Symbol 9,1 Item 2SHUDWLQJ#,QSXW#9ROWDJH 9287 6WHS0GRZQ#2XWSXW#9ROWDJH ∆92872 6WHS0GRZQ#2XWSXW#9ROWDJH ∆7 7HPSHUDWXUH#&RHIILFLHQW IRVF 2VFLOODWRU#)UHTXHQF\ ∆IRVF2 Conditions )UHTXHQF\#7HPSHUDWXUH 9,1 9&( 9R.4159/#,287 043P$ 9,1 9&( 9R.4159/#,287 0433P$ 6XSSO\#&XUUHQW4 ,VWE 6WDQGE\#&XUUHQW ,(;7+ (;7#´+µ#2XWSXW#&XUUHQW ,(;7/ (;7#´/µ#2XWSXW#&XUUHQW ,&(+ &(#´+µ#,QSXW#&XUUHQW ,&(/ &(#´/µ#,QSXW#&XUUHQW 9,1 46159/#9&( 39/#9287 46159 9&(+ &(#´+µ#,QSXW#9ROWDJH 9,1 ;9/#9&( 39→4189 9&(/ &(#´/µ#,QSXW#9ROWDJH 9,1 ;9/#9&( 4189→39 7SURW ,9'/. ,9'/ 9,1 ;9/#9(;7 :1<9/#9287 ;9/ 9&( ;9 9,1 ;9/#9(;7 3149/#9287 39/ 9&( 39 4615 9R 633 9R× 4135 0318 9 $ SSP2 ƒ& 693 $ IXQFWLRQ $W#;3(#RI#ULVLQJ 9,1 9R.4159/#9&( 9R.4159→39 % —$ 3 318 & —$ 043 09 ' P$ ' P$ ( 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Note* “316 9,1 46159/#9&( 39/#9287 39 9)0#'XW\#&\FOH 9'287#2XWSXW#/HDNDJH 573 9287 46159 &\FOH FLUFXLW TYP. “433 9,1 46159/#9&( 46159/ 2VFLOODWRU#0D[LPXP#'XW\ 'HOD\#7LPH#IRU#SURWHFWLRQ 31<; 073ƒ&≤7RSW≤;8ƒ& ,''4 7VWDUW 9R× 073ƒ&≤7RSW≤;8ƒ& &RHIILFLHQW 9)0GW\ MIN. 516 ∆7 0D[GW\ +7RSW 58ƒ&, 318 4 5 R1221N Symbol 09'(7 W9'(7 9+<6 ∆09'(72 ∆7 Item 'HWHFWRU#7KUHVKROG 2XWSXW#'HOD\#7LPH#IRU 5HOHDVHG#9ROWDJH MIN. 9,1 99/#9&( 99/ 9'× 9287 9'×4159→39 31<; TYP. 9' MAX. Note* 9'× 4135 9287 39→9'×4159 5 8 43 9'× 9'× 9'× WHUHVLV 9287 39→9'×4159 3134 3136 3138 SHUDWXUH#&RHIILFLHQW - 9 - PV - P9 $W#;3(#RI#ULVLQJ 9,1 99/#9&( 99/ 'HWHFWRU#7KUHVKROG#7HP0 Unit 9,1 99/#9&( 99/ 'HWHFWRU#7KUHVKROG#+\V0 1RWH=#5HIHU#WR#7HVW#&LUFXLWV 6 Conditions 073ƒ&≤7RSW≤;8ƒ& “433 SSP2 ƒ& R1221N • R1221N***B (D,F,H) Output Voltage : Vo, Detector Threshold : VD Symbol 9,1 Item 2SHUDWLQJ#,QSXW#9ROWDJH 9287 6WHS0GRZQ#2XWSXW#9ROWDJH ∆92872 6WHS0GRZQ#2XWSXW#9ROWDJH ∆7 7HPSHUDWXUH#&RHIILFLHQW IRVF 2VFLOODWRU#)UHTXHQF\ ∆IRVF2∆7 Conditions )UHTXHQF\#7HPSHUDWXUH &RHIILFLHQW 9,1 9&( 9R.4159/#,287 043P$ 9,1 9&( 9R.4159/#,287 0433P$ ,(;7+ (;7#´+µ#2XWSXW#&XUUHQW ,(;7/ (;7#´/µ#2XWSXW#&XUUHQW ,&(+ &(#´+µ#,QSXW#&XUUHQW ,&(/ &(#´/µ#,QSXW#&XUUHQW 9,1 46159/#9&( 39/#9287 46159 9&(+ &(#´+µ#,QSXW#9ROWDJH 9,1 ;9/#9&( 39→4189 9&(/ &(#´/µ#,QSXW#9ROWDJH 9,1 ;9/#9&( 4189→39 ,9'/. ,9'/ 09'(7 9,1 ;9/#9(;7 :1<9/#9287 ;9/ 9&( ;9 9,1 ;9/#9(;7 3149/#9287 39/ 9&( 39 9,1 9R.4159/#9&( 39→9R.4159 IXQFWLRQ $W#;3(#RI#ULVLQJ 'HWHFWRU#7KUHVKROG 9R 9R× 4135 833 0318 $ 9,1 9R.4159/#9&( 9R.4159→39 SSP2 ƒ& 933 $ 9'287 3149 N+] (2ƒ& 533 % —$ 3 318 & —$ 043 09 ' P$ ' P$ ( —$ ( —$ ) 9 ) 9 53 318 3 415 31; ( 58 ( 6 9 43 ) PV 4 5 7 * PV 3 318 , —$ , P$ - 9 9,1 9287 9&( 9'287 ;9 9,1 9287 5169/#9&( 39/ 9 473 31; 316 Unit 9 433 'HOD\#7LPH#E\#6RIW06WDUW 9'287#´/µ#2XWSXW#&XUUHQW 4615 3 9287 46159 $SSOLHG#WR#%#DQG#)#YHUVLRQV#RQO\ &XUUHQW 43 9,1 46159/#9&( 46159/ 9)0#'XW\#&\FOH 9'287#2XWSXW#/HDNDJH MAX. 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Inductor 6HOHFW#DQ#LQGXFWRU#WKDW#SHDN#FXUUHQW#GRHV#QRW#H[FHHG#,/PD[1#,I#ODUJHU#FXUUHQW#WKDQ#DOORZDEOH#FXUUHQW#IORZV/#PDJ0 QHWLF#VDWXUDWLRQ#RFFXUV#DQG#PDNH#WUDQVIRUP#HIILFLHQF\#ZRUVH1 :KHQ#WKH#ORDG#FXUUHQW#LV#VDPH/#WKH#VPDOOHU#YDOXH#RI#//#WKH#ODUJHU#WKH#ULSSOH#FXUUHQW1 3URYLGHG#WKDW#WKH#DOORZDEOH#FXUUHQW#LV#ODUJH#LQ#WKDW#FDVH#DQG#'&#FXUUHQW#LV#VPDOO/#WKHUHIRUH/#IRU#ODUJH#RXWSXW#FXUUHQW/ HIILFLHQF\#LV#EHWWHU#WKDQ#XVLQJ#DQ#LQGXFWRU#ZLWK#D#ODUJH#YDOXH#RI#/#DQG#YLFH#YHUVD/ 2 Diode 8VH#D#GLRGH#ZLWK#ORZ#9)#+6FKRWWN\#W\SH#LV#UHFRPPHQGHG1,#DQG#KLJK#VZLWFKLQJ#VSHHG1 5HYHUVH#YROWDJH#UDWLQJ#VKRXOG#EH#PRUH#WKDQ#9,1#DQG#FXUUHQW#UDWLQJ#VKRXOG#EH#HTXDO#RU#PRUH#WKDQ#,/PD[1 61 &DSDFLtRU $V#IRU#&,1/#XVH#D#FDSDFLWRU#ZLWK#ORZ#(65#+(TXLYDOHQW#6HULHV#5HVLVWDQFH,#DQG#D#FDSDFLW\#RI#DW#OHDVW#43—)#IRU#VWDEOH RSHUDWLRQ1#&287#FDQ#UHGXFH#ULSSOH#RI#2XWSXW#9ROWDJH/#WKHUHIRUH#7:#WR#433—)#WDQWDOXP#W\SH#LV#UHFRPPHQGHG1 4. Lx Transistor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utput Voltage vs. Output Current m R1221N33AH R1221N15XH L=27 H 1.515 Output Voltage VOUT (V) Output Voltage VOUT (V) 3.380 3.360 3.340 3.320 3.300 3.280 12V 3.260 8V 3.240 4.5V 3.220 3.200 1E-05 0.0001 0.001 0.01 0.1 1.510 1.505 1.500 13.2V 1.495 8V 1.490 5V 1.485 2.3V 1.480 1E-05 1 0.0001 Output Current IOUT (A) 2) 0.001 0.01 0.1 1 Output Current IOUT (A) Efficiency vs. Output Current CD104-27µH 100 90 90 80 80 70 70 Efficiency η(%) Efficiency η(%) 100 60 50 40 30 60 50 40 30 20 20 10 10 0 0.1 1 10 100 0 0.1 1000 CD104-27µH Si3443DV 100 80 80 Efficiency η(%) Efficiency η(%) 10 100 1000 60 40 CD104-27µH Si3443DV R1221N33AB(VIN=12V) 100 60 40 20 20 0 0.1 1 Output Current IOUT (mA) Output Current IOUT (mA) R1221N33AC(VIN=4.5V) CD104-27µH Si3443DV R1221N33AA(VIN=12V) R1221N33AA(VIN=4.5V) Si3443DV 1 10 100 Output Current IOUT (mA) 14 L=27µH 1.520 3.400 1000 0 0.1 1 10 100 Output Current IOUT (mA) 1000 R1221N CD104-27µH Si3443DV CD104-27µH R1221N33AC(VIN=12V) 100 100 90 90 80 80 70 70 Efficiency η(%) Efficiency η(%) R1221N33AC(VIN=4.5V) Si3443DV 60 50 40 30 60 50 40 30 20 20 10 10 0 0.1 1 10 100 0 0.1 1000 CD104-27µH Si3443DV 80 80 Efficiency η(%) Efficiency η(%) 100 60 40 CD104-27µH Si3443DV 60 40 1 10 100 0 0.1 1000 CD104-27µH Si3443DV R1221N50XB(VIN=6.0V) 1 10 100 1000 Output Current IOUT (mA) Output Current IOUT (mA) 100 100 80 80 60 40 CD104-27µH Si3443DV R1221N50XB(VIN=12V) Efficiency η(%) Efficiency η(%) 1000 20 20 60 40 20 20 0 0.1 100 R1221N50XA(VIN=12V) 100 0 0.1 10 Output Current IOUT (mA) Output Current IOUT (mA) R1221N50XA(VIN=6.0V) 1 1 10 100 Output Current IOUT (mA) 1000 0 0.1 1 10 100 1000 Output Current IOUT (mA) 15 R1221N CD104-27µH Si3443DV 100 100 80 80 60 40 60 40 20 20 0 0.1 1 10 100 0 0.1 1000 10 100 1000 Ripple Voltage vs. Output Current R1221N33AA L=27µH C=47µF(Ta) R1221N33AA 180 180 VIN=4.5V VIN=8V 140 VIN=12V 120 VIN=6V 160 Ripple Voltage Vrpp (mV) Ripple Voltage Vrpp (mV) 160 100 80 60 40 VIN=8V 140 VIN=12V 120 100 80 60 40 20 20 0 0 1 10 100 1 1000 R1221N33AB 10 100 1000 Output Current IOUT (mA) Output Current IOUT (mA) L=27µH C=47µF(Ta) R1221N50XB 200 L=27µH C=47µF(Ta) 200 180 180 VIN=4.5V 160 140 VIN=6V 160 VIN=8V Ripple Voltage Vrpp (mV) Ripple Voltage Vrpp (mV) L=27µH C=47µF(Ta) 200 200 VIN=12V 120 100 80 60 40 20 VIN=8V 140 VIN=12V 120 100 80 60 40 20 0 0 1 10 100 Output Current IOUT (mA) 16 1 Outpur Current IOUT (mA) Outpur Current IOUT (mA) 3) CD104-27µH Si3443DV R1221N50XC(VIN=12V) Efficiency η(%) Efficiency η(%) R1221N50XC(VIN=6.0V) 1000 1 10 100 Output Current IOUT (mA) 1000 R1221N L=27µH C=47µF(Ta) R1221N33AC 200 200 180 140 VIN=6V 160 VIN=8V Ripple Voltage Vrpp (mV) Ripple Voltage Vrpp (mV) 180 VIN=4.5V 160 VIN=12V 120 100 80 60 40 VIN=8V 140 VIN=12V 120 100 80 60 40 20 20 0 0 1 10 100 1 1000 Oscillator Frequency vs. Input Voltage R1221N15XB Oscillator Frequency fosc(kHz) Oscillator Frequency fosc(kHz) 500 400 300 200 100 0 5 10 L=27µH 500 400 300 200 100 0 15 0 5 10 15 Input Voltage VIN (V) R1221N15XA L=27µH 1.53 1.53 1.52 1.52 Output Voltage VOUT(V) Output Voltage VOUT(V) Output Voltage vs. Input Voltage R1221N15XB 1.51 1.50 1.49 1.48 1.47 1000 600 Input Voltage VIN (V) 5) 100 R1221N15XA L=27µH 600 0 10 Output Current IOUT (mA) Output Current IOUT (mA) 4) L=27µH C=47µF(Ta) R1221N50XC L=27µH 1.51 1.50 1.49 1.48 0 5 10 Input Voltage VIN (V) 15 1.47 0 5 10 15 Input Voltage VIN (V) 17 R1221N R1221N33AA L=27µH 3.36 3.34 3.34 Output Voltage VOUT(V) Output Voltage VOUT(V) R1221N33AB 3.36 3.32 3.30 3.28 3.26 3.24 0 5 10 3.32 3.30 3.28 3.26 3.24 15 0 Input Voltage VIN (V) 6) 10 R1221N15XB L=27µH 15 3.30 3.29 3.28 3.27 -50 0 50 1.50 1.49 1.48 1.47 -50 100 Temperature Topt (°C) Detector Threshold vs. Temperature R1221N25XA(VD=2.0V) 50 R1221N15XB(VD=1.2V) VIN=6V 100 VIN=6V 1.22 Detector Threshold VDOUT(V) Detector Threshold VDOUT(V) 0 Temperature Topt (°C) 2.01 2.00 1.99 1.98 1.97 -50 L=27µH VIN=2.7V 1.51 Output Voltage VOUT(V) Output Voltage VOUT(V) 3.31 0 50 Temperature Topt (°C) 18 5 Input Voltage VIN (V) Output Voltage vs. Temperature R1221N33AH 7) L=27µH 100 1.21 1.20 1.19 1.18 -50 0 50 Temperature Topt (°C) 100 R1221N R1221N33AB(VD=3.0V) VIN=6V Detector Threshold VDOUT(V) 3.06 3.04 3.02 3.00 2.98 2.96 2.94 -50 0 50 100 Temperature Topt (°C) 8) Oscillator Frequency vs. Temperature L=27µH VIN=4.5V R1221N33AB R1221N25XA 360 Oscillator Frequency fosc(kHz) Oscillator Frequency fosc(kHz) 600 550 500 450 400 -50 0 50 340 320 300 280 260 240 -50 100 0 50 100 Temperature Topt (°C) Temperature Topt (°C) Supply Current vs. Temperature R1221N33AH R1221N33AG 135 100 130 90 125 Supply Current1 (µA) Supply Current1 (µA) 9) L=27µH VIN=3.7V 120 115 VIN=15V 110 VIN=13.2V 105 VIN=8V 100 VIN=15V 80 VIN=13.2V 70 VIN=8V 60 95 90 -50 0 50 Temperature Topt (°C) 100 50 -50 0 50 100 Temperature Topt (°C) 19 R1221N 10) Soft-start Time vs. Temperature L=27µH VIN=4.5V R1221N33AB 8 10 Soft-start Time (msec) 12 Soft-start Time (msec) 10 6 4 8 6 4 2 0 -50 0 50 2 -50 100 R1221N25XA 4.0 4.0 3.5 3.5 Delay Time for Latch-type Protection (msec) Delay Time for Latch-type Protection (msec) 11) Delay Time for Latch-type Protection vs. Temperature VIN=4.5V R1221N33AB 3.0 2.5 2.0 1.5 1.0 2.5 2.0 1.5 1.0 0 50 0.0 -50 100 0 R1221N33AG 5 4 4 Delay Time for Reset-type Protection (msec) 5 3 2 1 0 50 Temperature Topt (°C) 50 100 Temperature Topt (°C) 12) Delay Time for Reset-type Protection vs. Temperature R1221N33AH VIN=4.5V Delay Time for Reset-type Protection (msec) VIN=3.7V 3.0 Temperature Topt (°C) 20 100 0.5 0.5 0 -50 50 0 Temperature Topt (°C) Temperature Topt (°C) 0.0 -50 L=27µH VIN=3.7V R1221N25XA 100 VIN=4.5V 3 2 1 0 -50 0 50 Temperature Topt (°C) 100 R1221N 13) VD Output Delay Time vs. Temperature R1221N33AB R1221N25XA VIN=8.0V 5 4 3 2 1 0 -50 0 50 5 4 3 2 1 0 -50 100 Temperature Topt (°C) 50 100 15) EXT "L" Output Current vs. Temperature R1221N33AB 16 30 EXT"L" Output Current (mA) 14 EXT"H"Output Current (mA) 0 Temperature Topt (°C) 14) EXT"H" Output Current vs. Temperature R1221N33AB 12 10 8 6 4 2 0 -50 VIN=8.0V 6 VD Output Delay Time (msec) VD Output Delay Time (msec) 6 0 50 100 Temperature Topt (°C) 25 20 15 10 5 0 -50 0 50 100 Temperature Topt (°C) 16) VDOUT "L" Output Current vs. Temperature R1221N33AD 1.6 1.4 VDLC (mA) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 0 50 100 Temperature Topt (°C) 21 R1221N 17) Load Transient Response R1221N33AA VIN=5V L=27µH R1221N33AA VIN=5V L=27µH 3.6 3.4 3 500 2.6 2.4 0 0.0005 3.4 3.3 3.2 3.1 3 2.9 2.8 2.7 0.1 0.001 2.6 0 R1221N33AB 3.3 3.5 3.2 3.4 3.1 3 500 2.9 2.6 2.5 2.4 0 0.0005 2 3 2.9 2.7 2.6 0 3.4 3.1 3 500 2.9 2.4 0 0.0005 Time (sec) 0.1 0.001 VIN=5V L=27µH 3.3 2 500 3.1 Output Current IOUT(mA) 2.5 Output Voltage VOUT(V) 3.5 3.2 Output Current IOUT(mA) Output Voltage VOUT(V) R1221N33AC 3.3 2.6 22 VIN=5V L=27µH 3.6 2.7 0.1 0.1 0.05 Time (sec) 3.4 2.8 500 3.1 2.8 0.1 0.001 VIN=5V L=27µH 3.3 Time (sec) R1221N33AC 0.1 Output Current IOUT(mA) 2.7 Output Voltage VOUT(V) 3.6 Output Current IOUT(mA) Output Voltage VOUT(V) VIN=5V L=27µH 3.4 2.8 0.1 0.05 Time (sec) Time (sec) R1221N33AB 500 Output Current IOUT(mA) 2.8 Output Voltage VOUT(V) 3.2 Output Current IOUT(mA) Output Voltage VOUT(V) 3.5 3 2.9 2.8 2.7 2.6 0 0.05 Time (sec) 0.1 0.1 R1221N VIN=5V L=27µH R1221N33AD 3.6 3.3 3.5 3.2 3.4 3.1 3 500 2.9 2.7 2.6 2.5 2.4 0 0.0005 3.3 2 500 3.1 3 2.9 2.8 2.7 0.1 0.001 2.6 0 Time (sec) R1221N33AA(VIN=5V,IOUT=0mA) 10 0 0.01 0.02 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -0.01 5 0 0 Time (sec) Time (sec) 0.02 Output Voltage VOUT(V) Output Voltage VOUT(V) 0.02 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -0.01 L=27µH 5 CE Voltage(V) CE Voltage(V) 0 0.01 R1221N33AB(VIN=5V,IOUT=0mA) L=27µH 10 0 0.01 Time (sec) R1221N33AB(VIN=10V,IOUT=0mA) 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -0.01 L=27µH CE Voltage (V) Output Voltage VOUT(V) L=27µH CE Voltage(V) Output Voltage VOUT(V) 18) Turn-on Waveform R1221N33AA(VIN=10V,IOUT=0mA) 0 0.1 0.1 0.05 Time (sec) 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -0.01 VIN=5V L=27µH Output Current IOUT(mA) 2.8 Output Voltage VOUT(V) 3.4 Output Current IOUT(mA) Output Voltage VOUT(V) R1221N33AD 0 0 0.01 0.02 Time (sec) 23 R1221N R1221N33AA(VIN=5V,IOUT=100mA) 10 0 0 0.01 0.02 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -0.01 5 0 0 Time (sec) 0.01 0.02 Output Voltage VOUT(V) Output Voltage VOUT(V) 24 0.02 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -0.01 L=27µH 5 CE Voltage(V) CE Voltage(V) 0 Time (sec) R1221N33AB(VIN=5V,IOUT=100mA) L=27µH 10 0 0.01 Time (sec) R1221N33AB(VIN=10V,IOUT=100mA) 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -0.01 L=27µH CE Voltage(V) Output Voltage VOUT(V) L=27µH CE Voltage(V) Output Voltage VOUT(V) R1221N33AA(VIN=10V,IOUT=100mA) 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -0.01 0 0 0.01 Time (sec) 0.02