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BLOCK DIAGRAM RNxxA RNxxB Vref Vref Current Limit Current Limit SELECTION GUIDE 7KH RXWSXW YROWDJH WKH DFWLYH W\SH WKH SDFNLQJ W\SH DQG WKH WDSLQJ W\SH IRU WKH,&V FDQ EH VHOHFWHG DW WKH XVHUVUHTXHVW7KHVHOHFWLRQFDQEHPDGHE\GHVLJQDWLQJWKHSDUWQXPEHUDVVKRZQEHORZ [[[[[[ DE F G DUWXPEHU Code D 'HVLJQDWLRQRIDFNDJH7\SH 67LQLPROG Contents E F G 6HWWLQJXWSXW9ROWDJH987 6WHSZLVHVHWWLQJZLWKDVWHSRI9LQWKHUDQJHRI9WR9LVSRVVLEOH 'HVLJQDWLRQRI$FWLYH7\SH $ /µdfwlyhw\sh % +µdfwlyhw\sh 'HVLJQDWLRQRI7DSLQJ7\SH ([77/UHIHUWR7DSLQJ6SHFLILFDWLRQV7W\SHLVWKHVWDQGDUGGLUHFWLRQ
PIN CONFIGURATION SOT-- 4 (mark side) NC PIN DESCRIPTION Pin No. Symbol Description 9'',QSXWLQ *' *URXQGLQ &( RU&( &KLS(QDEOHLQ & R&RQQHFWLRQ 987 XWSXWSLQ ABSOLUTE MAXIMUM RATINGS Item Symbol Rating Unit,QSXW9ROWDJH 9, 9,QSXW9ROWDJH &( RU&(LQ 9&( a9, 9 XWSXW9ROWDJH 987 a9, 9 XWSXW&XUUHQW,87 P$ RZHU'LVVLSDWLRQ ' P: SHUDWLQJ7HPSHUDWXUH DQJH 7RSW a & 6WRUDJH7HPSHUDWXUHDQJH 7VWJ a &
ELECTRICAL CHARACTERISTICS RNxxA 7RSW & Symbol Item Conditions Min. Typ. Max. Unit 9, 6HW9879 987 XWSXW9ROWDJH P$,87 P$ 987 987 9,87 XWSXW&XUUHQW HIHUWRWKH(/(&7,&$/&+$$&7(,67,&6E\8787 9/7$*( 987,87 /RDGHJXODWLRQ 9, 6HW9879 P$,87 P$ P9 9',) 'URSRXW9ROWDJH HIHUWRWKH(/(&7,&$/&+$$&7(,67,&6E\8787 9/7$*(,66 6XSSO\&XUUHQW 9, 6HW9879 µ$,vwdqge\ 6XSSO\&XUUHQW6WDQGE\ 9, 9&( 6HW9879 µ$ 987 9, /LQHHJXODWLRQ 6HW9879 9, 9,87 P$ 9 LSSOHHMHFWLRQ I N+]LSSOH9SS 9, 6HW9879 G% 9,,QSXW9ROWDJH 9 987 7 XWSXW9ROWDJH 7HPSHUDWXUH&RHIILFLHQW,87 P$ & 7RSW & SSP &,OLP6KRUW&XUUHQW/LPLW 987 9 P$ 8 &( XOOXSHVLVWDQFH Ω 9&(+ &(,QSXW9ROWDJH +µ 9, 9 9&(/ &(,QSXW9ROWDJH /µ 9 HQ XWSXWRLVH %: +] N+] µ9upv 4
RNxxB 7RSW & Symbol Item Conditions Min. Typ. Max. Unit 9, 6HW9879 987 XWSXW9ROWDJH P$,87 P$ 987 987 9,87 XWSXW&XUUHQW HIHUWRWKH(/(&7,&$/&+$$&7(,67,&6E\8787 9/7$*( 987,87 /RDGHJXODWLRQ 9, 6HW9879 P$,87 P$ P9 9',) 'URSRXW9ROWDJH HIHUWRWKH(/(&7,&$/&+$$&7(,67,&6E\8787 9/7$*(,66 6XSSO\&XUUHQW 9, 6HW9879 µ$,vwdqge\ 6XSSO\&XUUHQW6WDQGE\ 9, 6HW9879 9&( *' µ$ 987 9, /LQHHJXODWLRQ 6HW9879 9, 9,87 P$ 9 LSSOHHMHFWLRQ I.+]LSSOH9SS 9, 6HW9879 G% 9,,QSXW9ROWDJH 9 987 7 XWSXW9ROWDJH 7HPSHUDWXUH&RHIILFLHQW,87 P$ & 7RSW & SSP &,OLP6KRUW&XUUHQW/LPLW 987 9 P$ ' &(XOOGRZQHVLVWDQFH Ω 9&(+ &(,QSXW9ROWDJH +µ 9, 9 9&(/ &(,QSXW9ROWDJH /µ 9 HQ XWSXWRLVH %: +] N+] µ9upv
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE Output Voltage 987 987 Condition 9,987 9 7RSW & Output Current IOUT (ma) Min. Output Voltage (V) Dropout Voltage VDIF (V) 7RSW & Condition Min. Typ. Max. 987,87 P$ 987 987 987 987 OPERATION RNxxA RNxxB R R Vref Vref Current Limit R Current Limit R,QWKHVH,&VIOXFWXDWLRQRIWKHRXWSXWYROWDJH987LVGHWHFWHGE\IHHGEDFNUHJLVWHUVDQGWKHUHVXOWLV FRPSDUHGZLWKDUHIHUHQFHYROWDJHE\WKHHUURUDPSOLILHUVRWKDWDFRQVWDQWYROWDJHLVRXWSXW$FXUUHQWOLPLWFLUFXLW IRUSURWHFWLRQDWVKRUWPRGHDQGDFKLSHQDEOHFLUFXLWDUHLQFOXGHG 6
TEST CIRCUITS IN RNxxB Series OUT IN RNxxB Series OUT IOUT ISS.µF.µF.µF.µF Fig. Standard test Circuit Fig. Supply Current Test Circuit IN RNxxB Series OUT IN RNxxB Series OUT IOUT P.G µf I I Fig. Ripple Rejection, Line Transient Response Test Circuit Fig.4 Load Transient Response Test Circuit 7
TYPICAL CHARACTERISTICS ) Output Voltage vs. Output Current RN8B..8.6.8V.4...8.6 VIN =.V.4. Topt = C.8V.V. 4. 4. 4........ RN4B Topt = C 6.V.V 4.V VIN = 4.V. 4 ) Output Voltage vs. Input Voltage RN8B Topt = C..9 IOUT = ma.8.7.6..4 ma. ma.... 4.. 6. 7. 8. Output Voltage (V)....... RNB Topt = C.V 4.V.V VIN =.V. 4 6.. 4.... RNB Topt = C 7.V 6.V.V VIN =.V. 4...9.8.7.6 RNB Topt = C IOUT=mA ma. ma.. 4.. 6. 7. 8. 8
4. RN4B Topt = C. RNB Topt = C IOUT = ma 4.. ma. ma... 4.. 6. 7. 8. Intput Voltage VIN (V). IOUT = ma 4. 4.. ma. ma... 4.. 6. 7. 8. Intput Voltage VIN (V) ) Dropout Voltage vs. Output Current. RN8B.4 RNB Dropout Voltage VDIF (V)..8.6.4. Topt = 8 C -4 C C Dropout Voltage VDIF (V)....... Topt = 8 C C -4 C...4 RN4B.4 RNB.. Dropout Voltage VDIF (V)..... Topt = 8 C -4 C C Dropout Voltage VDIF (V)..... Topt = 8 C C -4 C.... 9
4) Output Voltage vs. Temperature.9.88.86.84.8.8.78.76.74.7 RN8B VIN =.8V IOUT = ma.7 - - 7 Temperature Topt..8.6.4...98.96.94.9 RNB VIN = 4.V IOUT = ma.9 - - 7 Temperature Topt 4. 4.8 4.6 4.4 4. 4..98.96.94.9 RN4B VIN =.V IOUT = ma.9 - - 7 Temperature Topt..8.6.4.. 4.98 4.96 4.94 4.9 RNB VIN = 6.V IOUT = ma 4.9 - - 7 Temperature Topt ) Supply Current vs. Input Voltage 6 RN8B Topt = C 6 RNB Topt = C Supply Current I ISS µ 4 Supply Current I ISS µ 4... 4.. 6. 7. 8.... 4.. 6. 7. 8.
6 RN4B Topt = C 6 RNB Topt = C Supply Current ISS µ 4 Supply Current ISS µ 4... 4.. 6. 7. 8. Intput Voltage VIN (V)... 4.. 6. 7. 8. Intput Voltage VIN (V) 6) Supply Current vs. Temperature RN8B VIN =.8V RNB VIN = 4.V 4 4 Supply Current ISS (µa) 4 Supply Current ISS (µa) 4 - Temperature Topt ( C) - Temperature Topt ( C) RN4B VIN =.V RNB VIN = 6.V 4 4 Supply Current ISS (µa) 4 Supply Current ISS (µa) 4 - Temperature Topt ( C) - Temperature Topt ( C)
7) Dropout Voltage vs. Set Output Voltage Dropout Voltage VDIF (V)..9 RNxxB Topt =.8 IOUT = ma.7 IOUT = ma IOUT = ma.6 IOUT = ma IOUT = ma..4....... 4.. Set Output Voltage Vreg (V) 8) Ripple Rejection vs. Frequency RN8B Ripple Rejection RR (db) VIN =.8VDC +.Vp-p COUT = tantal.µf 8 7 6 IOUT 4 = ma IOUT = ma IOUT = ma. Frequuency f (khz) Ripple Rejection RR (db) RN8B VIN =.8VDC +.Vp-p COUT = tantal.µf 8 7 6 4 IOUT= ma IOUT = ma IOUT = ma. Frequuency f (khz) Ripple Rejection RR (db) RNB VIN = 4VDC +.Vp-p COUT = tantal.µf 8 7 6 4 IOUT = ma IOUT = ma IOUT = ma. Frequuency f (khz) Ripple Rejection RR (db) RNB VIN = 4VDC +.Vp-p COUT = tantal.µf 8 7 6 IOUT 4 = ma IOUT = ma IOUT = ma. Frequuency f (khz)
Ripple Rejection RR (db) RN4B VIN =.VDC +.Vp-p COUT = tantal.µf 8 7 6 4 IOUT= ma IOUT = ma IOUT = ma. Frequeney f (khz) Ripple Rejection RR (db) RN4B VIN =.VDC +.Vp-p COUT = tantal.µf 8 7 6 4 IOUT = ma IOUT = ma. IOUT = ma Frequeney f (khz) 9) Ripple Rejection vs. Input Voltage (DC bias) RNB Ripple Rejection RR (db) IOUT = ma COUT =.µf 8 7 6 4 f = 4Hz f = khz f = khz....4. Ripple Rejection RR(dB) RNB IOUT = ma COUT =.µf 8 7 6 4 f = 4Hz f = khz f = khz....4. RNB IOUT = ma COUT =.µf Ripple Rejection RR(dB) 8 f = 4Hz 7 6 f = khz f = khz 4....4.
) Line Transient Response.4 RNB IOUT=mA tr=tf= µs COUT=Tantalum.µF 6.....9 Input Voltage Output Voltage 4.8 4 6 8 Time t (µs).4 RNB IOUT=mA tr=tf= µs COUT=Tantalum.µF 6.....9 Input Voltage Output Voltage 4.8 4 6 8 Time t (µs).4 RNB IOUT=mA tr=tf= µs COUT=Tantalum 4.7µF 6.....9 Input Voltage Output Voltage 4.8 4 6 8 Time t (µs) 4
) Load Transient Response.4 RNB VIN=4V CIN=Tantalum µf COUT=Tantalum.µF.....9 Output Current Output Voltage - - Output IOUT (ma).8-4 6 8 4 6 8 Time t (µs).4 RNB VIN=4V CIN=Tantalum µf COUT=Tantalum.µF.....9 Output Current Output Voltage - -.8-4 6 8 4 6 8 Time t (µs).4 RNB VIN=4V CIN=Tantalum µf COUT=Tantalum 4.7µF.....9 Output Current Output Voltage - -.8-4 6 8 4 6 8 Time t (µs)
TECHNICAL NOTES :KHQXVLQJWKHVH,&VFRQVLGHUWKHIROORZLQJSRLQWV,QWKHVH,&VSKDVHFRPSHQVDWLRQLVPDGHIRUVHFXULQJVWDEOHRSHUDWLRQHYHQLIWKHORDGFXUUHQWLVYDULHG)RU WKLVSXUSRVHEHVXUHWRXVHDFDSDFLWRU&87ZLWKJRRGIUHTXHQF\FKDUDFWHULVWLFVDQG(6(TXLYDOHQW6HULHVH VLVWDQFHRIZKLFKLVLQWKHUDQJHGHVFULEHGDVIROORZV VIN VIN Ceramic Capacitor µf RNB Ceramic Capacitor ESR IOUT S.A. Spectrum Analyzer Measuring Circuit for white noise;rnb 7KHUHODWLRQVKLSEHWZHHQ,87RXWSXWFXUUHQWDQG(6RIRXWSXWFDSDFLWRULVVKRZQLQWKHJUDSKVEHORZ7KH FRQGLWLRQVZKHQWKHZKLWHQRLVHOHYHOLVXQGHUµ9$YJDUHLQGLFDWHGE\WKHKDWFKHGDUHDLQWKHJUDSK QRWH:KHQWKHDGGLWLRQDOFHUDPLFFDSDFLWRUVDUHFRQQHFWHGWRWKHRXWSXWSLQZLWKRXWSXWFDSDFLWRUIRUSKDVHFRP SHQVDWLRQWKHRSHUDWLRQPLJKWEHXQVWDEOH%HFDXVHRIWKLVWHVWWKHVH,&VZLWKDVWKHVDPHH[WHUQDOFRPSRQHQWVDV WKHRQHVWREHXVHGRQWKH&% PHDVXULQJFRQGLWLRQV! 9, 9 )UHTXHQF\EDQG+]WR+] 7HPSHUDWXUH & RNB Ceramic.µF RNB Ceramic.µF.. ESR (Ω). ESR (Ω)..... 6
DNH9''DQG*'OLQHVVXIILFLHQW,IWKHLULPSHGDQFHLVKLJKQRLVHSLFNXSRULQFRUUHFWRSHUDWLRQPD\UHVXOW &RQQHFWWKHFDSDFLWRUZLWKDFDSDFLWDQFHRIµ)RUPRUHEHWZHHQ9''DQG*'DVFORVHDVSRVVLEOH 6HWH[WHUQDOFRPSRQHQWVHVSHFLDOO\WKHRXWSXWFDSDFLWRUDVFORVHDVSRVVLEOHWRWKH,&VDQGPDNHZLULQJDVVKRUWDV SRVVLEOH TYPICAL APPLICATION IN RNxxA OUT IN RNxxB OUT Cap. Cap. Cap. Cap. 7