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RNRKxxA/xxB/xxA BLOCK DIAGRAM Lx* VLX Limiter Buffer VFM Control OSC khz - + Vref VOUT EXT* Chip Enable CE GND *) LX pin: only for RNRKxx$xx% SELECTION GUIDE 7KHRXWSXWYROWDJHWKHGULYHUW\SHWKHGXW\F\FOHDQGWKHWDSLQJW\SHIRUWKH,&VFDQEHVHOHFWHGDWWKHXVHUVUH TXHVW 7KHVHOHFWLRQFDQEHPDGHE\GHVLJQDWLQJWKHSDUWQXPEHUDVVKRZQEHORZ.[[[[[[ 3DUWXPEHU DEF G Code D E F G Contents 6HWWLQJXWSXW9ROWDJH987 6WHSZLVHVHWWLQJZLWKDVWHSRI9LQWKHUDQJHRI9WR9LVSRVVLEOH 'HVLJQDWLRQRI'ULYHU,QWHUQDO/[7U'ULYHU ([WHUQDO7U'ULYHU 'HVLJQDWLRQRI'XW\&\FOH $ % 'HVLJQDWLRQRI7DSLQJW\SH ([77/UHIHUWR7DSLQJ6SHFLILFDWLRQV7W\SHLVSUHVFULEHGDVDVWDQGDUG
RNRKxxA/xxB/xxA PIN CONFIGURATION SOT-3- (mark side) 3 PIN DESCRIPTION Pin No. Symbol Pin description &( &KLS(QDEOH3LQ 987 6WHSXSXWSXWRQLWRULQJ3LQ3RZHU6XSSO\IRUGHYLFHLWVHOI & R&RQQHFWLRQ *' *URXQG3LQ /; 6ZLWFKLQJ3LQFKSHQ'UDLQ Pin No. Symbol Pin description &( &KLS(QDEOH3LQ 987 6WHSXSXWSXWRQLWRULQJ3LQ3RZHU6XSSO\IRUGHYLFHLWVHOI & R&RQQHFWLRQ *' *URXQG3LQ (;7 ([WHUQDO7U'ULYH3LQ&6XWSXW 3
RNRKxxA/xxB/xxA ABSOLUTE MAXIMUM RATINGS Symbol Item Rating Unit 987 6WHSXSXWSXW3LQ9ROWDJH 9 9/; /;3LQ9ROWDJH 9 9(;7 (;73LQ9ROWDJH ²WR987 9 9&( &(3LQ9ROWDJH ²WR987 9,/; /[3LQXWSXW&XUUHQW P$,(;7 (;73LQXWSXW&XUUHQW P$ 3' 3RZHU'LVVLSDWLRQ P: 7RSW SHUDWLQJ7HPSHUDWXUHDQJH ²WR ƒ& 7VWJ 6WRUDJH7HPSHUDWXUHDQJH ²WR ƒ& ABSOLUTE MAXIMUM RATINGS $EVROXWHD[LPXPUDWLQJVDUHWKUHVKROGOLPLWYDOXHVWKDWPXVWQRWEHH[FHHGHGHYHQIRUDQLQVWDQWXQGHUDQ\FRQ GLWLRQVRUHRYHUVXFKYDOXHVIRUDQ\WZRLWHPVPXVWQRWEHUHDFKHGVLPXOWDQHRXVO\SHUDWLRQDERYHWKHVHDEVR OXWHPD[LPXPUDWLQJVPD\FDXVHGHJUDGDWLRQRUSHUPDQHQWGDPDJHWRWKHGHYLFH7KHVHDUHVWUHVVUDWLQJVRQO\DQG GRQRWQHFHVVDULO\LPSO\IXQFWLRQDORSHUDWLRQEHORZWKHVHOLPLWV
RNRKxxA/xxB/xxA ELECTRICAL CHARACTERISTICS RNRKxxA/xxB 7RSW ƒ& Symbol Item Conditions Min. Typ. Max. Unit 987 XWSXW9ROWDJH 9, VHW987,87 P$ 9 9,,QSXW9ROWDJH 9 987 7RSW XWSXW9ROWDJH7HPSHUDWXUH &RHIILFLHQW ƒ& 7RSW ƒ& SSPƒ& 9VWDUW 6WDUW8S9ROWDJH 9, 9 9 9 9VWDUW 7RSW 6WDUW8S9ROWDJH7HPSHUD WXUH&RHIILFLHQW ƒ& 7RSW ƒ& P9ƒ& 9, 9 9 9KROG +ROGRQ9ROWDJH[[$ 9, 9 9 9 9KROG +ROGRQ9ROWDJH[[% 9, 9 9 9,'' 6XSSO\&XUUHQW 987 9&( VHW9879 $,VWDQE\ 6WDQGE\&XUUHQW 987 99&( 9 $,/;OHDN /[/HDNDJH&XUUHQW987 9/; 9 $ IRVF D[LPXPVFLOODWRU)UH TXHQF\ 987 9&( VHW987 N+] IRVF Topt )UHTXHQF\7HPSHUDWXUH&R HIILFLHQW ƒ& 7RSW ƒ& N+] ƒ& 'XW\ VFLOODWRU'XW\&\FOH[[$ 987 9&( VHW987 9/; /µvlgh 'XW\ VFLOODWRU'XW\&\FOH[[% 987 9&( VHW987 9/; /µvlgh 9O[OLP 9/[9ROWDJH/LPLW 987 9&( 9/[6ZLWFK 9 987 9&( VHW987 9&(+ &( +µ,qsxw9rowdjh -XGJPHQWLVPDGHE\WKH/[ ZDYHIRUP 9 987 9&( VHW987 9&(/ &( /µ,qsxw9rowdjh -XGJPHQWLVPDGHE\WKH/[ ZDYHIRUP 9,&(+ &( +µ,qsxw&xuuhqw 987 99&( 9 $,&(/ &( /µ,qsxw&xuuhqw 987 99&( 9 $,'' 6XSSO\&XUUHQW 9 987 9 $,'' 6XSSO\&XUUHQW 9 987 9 $
RNRKxxA/xxB/xxA Symbol Item Conditions Min. Typ. Max. Unit,'' 6XSSO\&XUUHQW 9 987 9 $,'' 6XSSO\&XUUHQW 9 987 9 $,'' 6XSSO\&XUUHQW 9 987 9 $,'' 6XSSO\&XUUHQW 9 987 9 $,'' 6XSSO\&XUUHQW 9 987 9 $,/; /[6ZLWFKLQJ&XUUHQW 9 987 99/; 9 P$,/; /[6ZLWFKLQJ&XUUHQW 9 987 99/; 9 P$,/; /[6ZLWFKLQJ&XUUHQW 9 987 99/; 9 P$,/; /[6ZLWFKLQJ&XUUHQW 9 987 99/; 9 P$,/; /[6ZLWFKLQJ&XUUHQW 9 987 99/; 9 P$,/; /[6ZLWFKLQJ&XUUHQW 9 987 99/; 9 P$,/; /[6ZLWFKLQJ&XUUHQW 9 987 99/; 9 P$ *) Condition: An Output load resistor RL is connected between VOUT and GND. Note that the resistor RL has a resistance which makes an output current ma after step-up operation. *) The Supply Current (IDD) for IC itself is measured when the internal oscillator works continuously. If the oscillator works intermittently, the supply current becomes smaller than the value which is written on the above table. Measurement condition: VOUT=VCE=Setting Output Voltage.96 6
RNRKxxA/xxB/xxA RNRKxxA 7RSW ƒ& Symbol Item Conditions Min. Typ. Max. Unit 987 XWSXW9ROWDJH 9, VHW987,87 P$ 9 9,,QSXW9ROWDJH 9 VOUT Topt Output Voltage Temperature Coefficient ƒ& 7RSW ƒ& SSPƒ& 9VWDUW 6WDUW8S9ROWDJH 9, 9 9 9 Vstart/ Topt Start-Up Voltage Temperature Coefficient - C Topt 8 C P9ƒ& VIN=V V,'' 6XSSO\&XUUHQW 987 9&( VHW9879 $,VWDQE\ 6WDQGE\&XUUHQW 987 99&( 9 $ )RVF IRVF Topt D[LPXPVFLOODWRU)UH TXHQF\ )UHTXHQF\7HPSHUDWXUH&R HIILFLHQW 987 9&( VHW987 N+] ƒ& 7RSW ƒ& N+]ƒ& 'XW\ VFLOODWRU'XW\&\FOH 987 9&( VHW987 9(;7 +µvlgh 987 9&( VHW987 9&(+ &( +µ,qsxw9rowdjh -XGJPHQWLVPDGHE\WKH(;7 ZDYHIRUP 9 987 9&( VHW987 9&(/ &( /µ,qsxw9rowdjh -XGJPHQWLVPDGHE\WKH(;7 ZDYHIRUP 9,&(+ &( +µ,qsxw&xuuhqw 987 99&( 9 $,&(/ &( /µ,qsxw&xuuhqw 987 99&( 9 $,'' 6XSSO\&XUUHQW 9 987 9(;7QRORDG $,'' 6XSSO\&XUUHQW 9 987 9(;7QRORDG $,'' 6XSSO\&XUUHQW 9 987 9(;7QRORDG $,'' 6XSSO\&XUUHQW 9 987 9(;7QRORDG $,(;7+ (;7 +µxwsxw9rowdjh,(;7+ (;7 +µxwsxw9rowdjh 9 987 9 9(;7 9879 9 987 9 9(;7 9879 P$ P$ 7
RNRKxxA/xxB/xxA Symbol Item Conditions Min. Typ. Max. Unit,(;7+ (;7 +µxwsxw9rowdjh 9 987 9 9(;7 9879 P$,(;7+ (;7 /µxwsxw9rowdjh 9 987 99(;7 9 P$,(;7+ (;7 /µxwsxw9rowdjh 9 987 99(;7 9 P$,(;7+ (;7 /µxwsxw9rowdjh 9 987 99(;7 9 P$ *) Condition: An Output load resistor RL is connected between VOUT and GND. Note that the resistor RL has a resistance which makes an output current ma after step-up operation. *) The Supply Current (IDD) for IC itself is measured when the internal oscillator works continuously. If the oscillator works intermittently, the supply current becomes smaller than the value which is written on the above table. Measurement condition: VOUT=VCE=Setting Output Voltage.96 8
RNRKxxA/xxB/xxA TEST CIRCUITS SBD L VIN Lx GND VOUT CE CL V RL kω Lx GND VOUT CE A CL Test Circuit Test Circuit Lx VOUT GND CE CL Oscilloscope Test Circuit 3 *) When VLXlim and ILX are measured, the Ω resistor is used. Otherwise kω is used. &RPSRQHQWV,QGXFWRU / + +6XPLGD(OHFWULF&R/WG&' 'LRGH 6%' $DWVXVKLWD(OHFWURQLFV&RUSRUDWLRQ6FKRWWN\7\SH &DSDFLWRU &/ )7DQWDOXP7\SH 8VLQJWKHVHWHVWFLUFXLWVFKDUDFWHULVWLFVGDWDKDVEHHQREWDLQHGDVVKRZQRQWKHIROORZLQJSDJHV 7HVW&LUFXLW 7HVW&LUFXLW 7HVW&LUFXLW 7\SLFDO&KDUDFWHULVWLFV 7\SLFDO&KDUDFWHULVWLFV 7\SLFDO&KDUDFWHULVWLFV 9
RNRKxxA/xxB/xxA SBD L VIN Tr Rb Cb EXT GND VOUT CE CL V EXT GND VOUT CE A CL Test Circuit Test Circuit Ω EXT VOUT EXT VOUT Oscilloscope GND CE CL GND CE CL Oscilloscope Test Circuit 3 Test Circuit &RPSRQHQWV,QGXFWRU / +6XPLGD(OHFWULF&R/WG&' 'LRGH 6%' %&RKP&R/WG6FKRWWN\7\SH &DSDFLWRU &/ ) 7DQWDOXP7\SH 7UDQVLVWRU 7U 6'* %DVHHVLVWRU E Ω %DVH&DSDFLWRU&E ) 7KHW\SLFDOFKDUDFWHULVWLFVZHUHREWDLQHGZLWKXVLQJWKHVHWHVWFLUFXLWV 7HVW&LUFXLW 7HVW&LUFXLW 7HVW&LUFXLW 7HVW&LUFXLW 7\SLFDO&KDUDFWHULVWLFV 7\SLFDO&KDUDFWHULVWLFV 7\SLFDO&KDUDFWHULVWLFV 7\SLFDO&KDUDFWHULVWLFV
RNRKxxA/xxB/xxA TYPICAL CHARACTERISTICS RNRKxxA/B ) Output Voltage vs. Output Current (Topt= C) 3. RNRK3A L=µH 3. RNRK3A L=µH 3.......V.3V.V.V 3.......V.V.V.3V. 6 8 6. 6 8 6 3. RNRK3B L=µH 3. RNRK3B L=µH 3...... VIN=.V.3V.V.V 3.......3V VIN=.V.V.V. 3. 3 6 RNRKA L=µH 6 RNRKA L=µH 3.V.V 3.V.V 3.V.V.V 3.V
RNRKxxA/xxB/xxA 6 RNRKB L=µH 6 RNRKB L=µH 3.V VIN=.V.V.V 3.V 3.V VIN=.V.V 3.V.V ) Efficiency vs. Output Current (Topt= C) RNRK3A L=µH RNRK3A L=µH 9 9 Efficiency η(%) 8 7.V 6.V.V.3V 6 8 6 Efficiency η(%) 8 7 6.V.V.V.3V 6 8 6 RNRK3B L=µH RNRK3B L=µH 9 9 Efficiency η(%) 8 7 6.3V VIN=.V.V.V Efficiency η(%) 8 7.3V VIN=.V.V.V 6 3 3
RNRKxxA/xxB/xxA RNRKA L=µH RNRKA L=µH Efficiency η(%) 9 8 7 6.V.V.V 3.V Efficiency η(%) 9 8 7 6.V.V.V 3.V RNRKB L=µH RNRKB L=µH 9.V 9 Efficiency η(%) 8 7 6.V VIN=.V.V 3.V Efficiency η(%) 8 7 6.V VIN=.V.V.V 3.V 3) Ripple Voltage vs. Output Current (Topt= C) RNRK3A L= µh.v Ripple Voltage Vr(mVp-p) 8 6.3V.V.V 6 8 6 Ripple Voltage Vr(mVp-p) 6 8 6.3V RNRK3A.V L=µH.V.V 6 8 6 3
RNRKxxA/xxB/xxA Ripple Voltage Vr(mVp-p) 3 3 RNRK3B.3V VIN=.V.V L=µH.V Ripple Voltage Vr(mVp-p) 3 3.V.3V RNRK3B.V L=µH.V 3 3 RNRKA L=µH RNRKA L=µH Ripple Voltage Vr(mVp-p).V.V 3.V.V Ripple Voltage Vr(mVp-p).V.V 3.V.V Ripple Voltage Vr(mVp-p) RNRKB L=µH 3.V 8.V 6.V.V VIN=.V Ripple Voltage Vr(mVp-p) RNRKB L=µH 3.V 8.V 6.V VIN=.V
RNRKxxA/xxB/xxA ) Start-up/Hold-on Voltage vs. Output Current (Topt= C). RNRK3A L=µH. RNRKA L=µH Start-up/Hold-on Voltage Vstart/Vhold(V)...8.6.. Vstart Vhold Start-up/Hold-on Voltage Vstart/Vhold(V)...8.6.. Vstart Vhold.. Start-up/Hold-on Voltage Vstart/Vhold(V) RNRK3B L=µH..8.6.. Vstart..8.6 Vhold... Start-up/Hold-on Voltage Vstart/Vhold(V) RNRKB L=µH..8.6.. Vstart..8.6 Vhold... ) Output Voltage vs. Temperature RNRK3A VIN=.V,L=µH 3.. RNRKA VIN=3.V,L=µH 3. 3..9 IOUT=mA IOUT=mA IOUT=3mA.9 - - 7...9 IOUT=3mA IOUT=mA IOUT=mA.9 - - 7
RNRKxxA/xxB/xxA 6) Start-up Voltage vs. Temperature RNRKA L= µh RNRKB L=µH Start-up Voltage Vstart(V).8.6.. Start-up Voltage Vstart(V).8.6.. - - 7 - - 7 7) Hold-on Voltage vs. Temperature RNRKA L=µH RNRKB L=µH Hold-on Voltage Vhold(V).8.6.. Hold-on Voltage Vhold(V).8.6.. - - 7 - - 7 8) Lx Switching Current vs. Temperature RNRK3A RNRKA LxSwitching Current ILx(mA) 3 LxSwitching Current ILx(mA) 3 - - 7 - - 7 6
RNRKxxA/xxB/xxA 9) Supply Current vs. Temperature RNRK3A 8 RNRKA Supply Current IDD(µA) 3 Supply Current IDD(µA) 7 6 - - 7 3 - - 7 ) Supply Current vs. Temperature ) Standby Current 3 vs. Temperature RNRK3A RNRK3A Supply Current IDD(µA) 3 Supply Current3 Istandby(µA).8.6.. - - 7 - - 7 ) Oscillator Duty Cycle vs. Temperature Oscullator Duty Cycle Maxduty(%) RNRK3A 8 8 7 7 - - 7 Oscullator Duty Cycle Maxduty(%) RNRK3B 6 8 6 - - 7 7
RNRKxxA/xxB/xxA 3) CE H Input Voltage vs. Temperature ) CE L Input Voltage vs. Temperature RNRK3A RNRK3A CE H Input Voltage VCEH(V).8.6.. CE L Input Voltage VCEL(V).8.6.. - - 7 - - 7 ) Maximum Oscillator Frequency vs. Temperature 6) VLX Voltage Limit vs. Temperature RNRK3A RNRK3A Maximum Oscillator Frequency fosc(khz) 9 8 7 6 - - 7 VLx Voltage Limit VLx(V).8.7.6.. - - 7 8
RNRKxxA/xxB/xxA RNRKxxA ) Output Voltage vs. Output Current (Topt= C) 3. RNRK3A L=7µH 6. RNRKA L=7µH 3.......3V.V.V.V.. 3... VIN=.V.V.V 3.V 6 8. 6 8 ) Efficiency vs. Output Current (Topt= C) RNRK3A L=7µH RNRKA L=7µH 9 9 Efficiency η(%) 8 7 6.3V.V.V.V Efficiency η(%) 8 7 6 VIN=.V.V.V 3.V 6 8 3) Ripple Voltage vs. Output Current (Topt= C) RNRK3A L=7µH Ripple Voltage Vr(mVp-p).3V.V.V.V 6 8 Ripple Voltage Vr(mVp-p) 3 6 8 RNRKA 3 L=7µH.V.V 3.V VIN=.V 6 8 9
RNRKxxA/xxB/xxA ) Start-up/Hold-on Voltage vs. Output Current (Topt= C) RNRK3A L=7µH..8.6.. Vstart..8.6 Vhold... Start-up/Hold-on Voltage Vstart/Vhold(V) Start-up/Hold-on Voltage Vstart/Vhold(V) RNRKA L=7µH....8.6. Vstart,Vhold...8.6... ) Output Voltage vs. Temperature RNRK3A VIN=.V,L=7µH 3.. RNRKA VIN=3.V,L=7µH 3. 3..9.9.8 IOUT=mA IOUT=mA IOUT=mA...9 IOUT=mA IOUT=mA IOUT=mA.8 - - 7.9 - - 7 6) EXT H Output Current vs. Temperature EXT H Output Current IEXTH(mA) RNRK3A 9 8 7 6 3 - - 7 EXT H Output Current IEXTH(mA) RNRKA 9 8 7 6 3 - - 7
RNRKxxA/xxB/xxA 7) EXT L Output Current vs. Temperature EXT L Output Current IEXTL(mA) RNRK3A 8 6 8 6 - - 7 EXT L Output Current IEXTL(mA) RNRKA 8 6 8 6 - - 7 8) Supply Current vs. Temperature RNRK3A RNRKA Supply Current IDD(µA) 3 Supply Current IDD(µA) 3 - - 7 - - 7 9) Supply Current vs. Temperature ) Standby Current vs. Temperature RNRK3A RNRK3A Supply Current IDD(µA) 3 Supply Current3 Istandby(µA).8.6.. - - 7 - - 7
RNRKxxA/xxB/xxA ) Oscillator Duty Cycle vs. Temperature ) Maximum Oscillator Frequency vs. Temperature RNRK3A RNRK3A 8 Oscullator Duty Cycle Maxduty(%) 8 7 7 - - 7 Maximum Oscillator Frequency fosc(khz) 9 8 7 6 - - 7 3) CE H Input Voltage vs. Temperature ) CE L Input Voltage vs. Temperature RNRK3A RNRK3A CE H Input Voltage VCEH(V).8.6.. CE L Input Voltage VCEL(V).8.6.. - - 7 - - 7