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5185.××4$2××4%2××5$#6(5,(6
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NO. EA-045-0006
SOT-23-5 VFM STEP-UP DC/DC CONVERTER
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OUTLINE
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FEATURES
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APPLICATIONS
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1
RN5RK××1A/××1B/××2A
BLOCK DIAGRAM
Lx* |
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Vref |
VOUT |
5 |
LX |
Limiter |
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2 |
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V |
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Buffer |
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-
VFM Control
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5 |
OSC 100kHz |
EXT* |
Chip Enable |
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4 |
GND
1
CE
*) LX pin: only for RN5RK××4$2××4%
SELECTION GUIDE
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D E F G |
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Code |
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Contents |
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D |
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6HWWLQJ#2XWSXW#9ROWDJH#+9287,#= |
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6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#5139#WR#8189#LV#SRVVLEOH1 |
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2
RN5RK××1A/××1B/××2A
PIN CONFIGURATION
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SOT-23-5 |
5 |
4 |
(mark side)
1 2 3
PIN DESCRIPTION
Pin No. |
Symbol |
Pin description |
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4 |
&( |
&KLS#(QDEOH#3LQ |
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5 |
9287 |
6WHS0XS#2XWSXW#0RQLWRULQJ#3LQ/#3RZHU#6XSSO\#+IRU#GHYLFH#LWVHOI, |
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1& |
1R#&RQQHFWLRQ |
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*1' |
*URXQG#3LQ |
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/; |
6ZLWFKLQJ#3LQ#+1FK#2SHQ#'UDLQ, |
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Pin No. |
Symbol |
Pin description |
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4 |
&( |
&KLS#(QDEOH#3LQ |
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5 |
9287 |
6WHS0XS#2XWSXW#0RQLWRULQJ#3LQ/#3RZHU#6XSSO\#+IRU#GHYLFH#LWVHOI, |
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1& |
1R#&RQQHFWLRQ |
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*1' |
*URXQG#3LQ |
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8 |
(;7 |
([WHUQDO#7U1#'ULYH#3LQ#+&026#2XWSXW, |
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3
RN5RK××1A/××1B/××2A
ABSOLUTE MAXIMUM RATINGS
Symbol |
Item |
Rating |
Unit |
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9287 |
6WHS0XS#2XWSXW#3LQ#9ROWDJH |
< |
9 |
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9/; |
/;#3LQ#9ROWDJH |
< |
9 |
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9(;7 |
(;7#3LQ#9ROWDJH |
²316#WR#9287#.316 |
9 |
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9&( |
&(#3LQ#9ROWDJH |
²316#WR#9287#.316 |
9 |
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,/; |
/[#3LQ#2XWSXW#&XUUHQW |
833 |
P$ |
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(;7#3LQ#2XWSXW#&XUUHQW |
“63 |
P$ |
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3' |
3RZHU#'LVVLSDWLRQ |
583 |
P: |
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7RSW |
2SHUDWLQJ#7HPSHUDWXUH#5DQJH |
²73#WR#.;8 |
ƒ& |
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7VWJ |
6WRUDJH#7HPSHUDWXUH#5DQJH |
²88#WR#.458 |
ƒ& |
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ABSOLUTE MAXIMUM RATINGS
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RN5RK××1A/××1B/××2A
ELECTRICAL CHARACTERISTICS
∙ RN5RK 1A/ 1B |
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7RSW 58ƒ& |
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Symbol |
Item |
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Conditions |
MIN. |
TYP. |
MAX. |
Unit |
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9287 |
2XWSXW#9ROWDJH |
9,1 |
VHW#9287×319/#,287 4P$ |
×31<:8 |
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×41358 |
9 |
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9,1 |
,QSXW#9ROWDJH |
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92872 7RSW |
2XWSXW#9ROWDJH#7HPSHUDWXUH |
073ƒ&≤7RSW≤;8ƒ& |
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9VWDUW |
6WDUW08S#9ROWDJH |
9,1 39→59-4 |
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31< |
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9VWDUW2 7RSW |
6WDUW08S#9ROWDJH#7HPSHUD0 |
073ƒ&≤7RSW≤;8ƒ& |
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9,1 39→59-4 |
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9,1 59→39-4 |
31: |
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9KROG |
+ROG0RQ#9ROWDJH#+××4%, |
9,1 59→39-4 |
31< |
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6XSSO\#&XUUHQW5 |
9287 |
9&( VHW#9287.3189 |
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6WDQGE\#&XUUHQW |
9287 |
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318 |
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9287 |
9/; |
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IRVF |
0D[LPXP#2VFLOODWRU#)UH0 |
9287 |
9&( |
VHW#9287×31<9 |
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433 |
453 |
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IRVF2 Topt |
)UHTXHQF\#7HPSHUDWXUH#&R0 |
073ƒ&≤7RSW≤;8ƒ& |
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3174 |
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2VFLOODWRU#'XW\#&\FOH#+××4$, |
9287 |
9&( |
VHW#9287×31<9/#21 |
:3 |
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;8 |
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2VFLOODWRU#'XW\#&\FOH#+××4%, |
9287 |
9&( |
VHW#9287×31<9/#21 |
7: |
88 |
96 |
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9O[OLP |
9/[#9ROWDJH#/LPLW |
9287 |
9&( |
41<89/#/[#6ZLWFK |
317 |
319 |
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9287 |
9&( |
VHW#9287×31<9/ |
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9&(+ |
&(#´+µ#,QSXW#9ROWDJH |
-XGJPHQW#LV#PDGH#E\#WKH#/[ |
31< |
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ZDYHIRUP |
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9287 |
9&( |
VHW#9287×31<9/ |
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9&(/ |
&(#´/µ#,QSXW#9ROWDJH |
-XGJPHQW#LV#PDGH#E\#WKH#/[ |
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316 |
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,&(+ |
&(#´+µ#,QSXW#&XUUHQW |
9287 |
9139/#9&( 9139 |
0318 |
3 |
318 |
—$ |
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&(#´/µ#,QSXW#&XUUHQW |
9287 |
9139/#9&( 3139 |
0318 |
3 |
318 |
—$ |
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,''4 |
6XSSO\#&XUUHQW4#-5 |
5139≤9287≤5179 |
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58 |
83 |
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6XSSO\#&XUUHQW4#-5 |
5189≤9287≤51<9 |
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63 |
88 |
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5
RN5RK××1A/××1B/××2A
Symbol |
Item |
Conditions |
MIN. |
TYP. |
MAX. |
Unit |
|
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,''4 |
6XSSO\#&XUUHQW4#-5 |
6139≤9287≤6179 |
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68 |
93 |
—$ |
,''4 |
6XSSO\#&XUUHQW4#-5 |
6189≤9287≤61<9 |
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73 |
98 |
—$ |
,''4 |
6XSSO\#&XUUHQW4#-5 |
7139≤9287≤7179 |
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78 |
:8 |
—$ |
,''4 |
6XSSO\#&XUUHQW4#-5 |
7189≤9287≤71<9 |
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83 |
;3 |
—$ |
,''4 |
6XSSO\#&XUUHQW4#-5 |
8139≤9287≤8189 |
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93 |
<3 |
—$ |
,/; |
/[#6ZLWFKLQJ#&XUUHQW |
5139≤9287≤5179/#9/; 3179 |
;3 |
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P$ |
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,/; |
/[#6ZLWFKLQJ#&XUUHQW |
5189≤9287≤51<9/#9/; 3179 |
433 |
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P$ |
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,/; |
/[#6ZLWFKLQJ#&XUUHQW |
6139≤9287≤6179/#9/; 3179 |
453 |
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P$ |
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,/; |
/[#6ZLWFKLQJ#&XUUHQW |
6189≤9287≤61<9/#9/; 3179 |
473 |
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P$ |
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,/; |
/[#6ZLWFKLQJ#&XUUHQW |
7139≤9287≤7179/#9/; 3179 |
493 |
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P$ |
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,/; |
/[#6ZLWFKLQJ#&XUUHQW |
7189≤9287≤71<9/#9/; 3179 |
4;3 |
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P$ |
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,/; |
/[#6ZLWFKLQJ#&XUUHQW |
8139≤9287≤8189/#9/; 3179 |
533 |
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P$ |
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*1) 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 1mA after step-up operation. *2) The Supply Current 1 (IDD1) 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 ×0.96
6