RICOH RN5RK212A-TL, RN5RK212A-TR, RN5RK221A-TL, RN5RK221A-TR, RN5RK221B-TL Datasheet

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62705608#9)0#67(3083#'&2'& &219(57(5

5185.××4$2××4%2××5$#6(5,(6

$33/,&$7,21#0$18$/

NO. EA-045-0006

SOT-23-5 VFM STEP-UP DC/DC CONVERTER

5185.××4$2××4%2××5$#6(5,(6

OUTLINE

7KH#5185.××4$2××4%2××5$#6HULHV#DUH#9)0#+&KRSSHU,#6WHS0XS#'&2'FRQYHUWHU#,&V#ZLWK#XOWUD#ORZ#VXSSO\#FXU0 UHQW#DQG#KLJK#RXWSXW#YROWDJH#DFFXUDF\#E\#&026#SURFHVV1

(DFK#RI#WKH#5185.××4$2××4%#FRQVLVWV#RI#DQ#RVFLOODWRU/#D#9)0#FRQWURO#FLUFXLW/#D#GULYHU#WUDQVLVWRU#WR#KDYH#ORZ#21 UHVLVWDQFH#+/[#VZLWFK,/#D#UHIHUHQFH#YROWDJH#XQLW/#D#KLJK#VSHHG#FRPSDUDWRU/#UHVLVWRUV#IRU#YROWDJH#GHWHFWLRQ/#DQ#/[#VZLWFK SURWHFWLRQ#FLUFXLW#DQG#DQ#LQWHUQDO#FKLS#HQDEOH#FLUFXLW1##$#ORZ# ULSSOH/# KLJK# HIILFLHQF\# VWHS0XS# '&2' FRQYHUWHU# FDQ# EH FRPSRVHG#RI#WKLV#5185.××4$2××4%#ZLWK#RQO\#WKUHH#H[WHUQDO#FRPSRQHQWV=#DQ#LQGXFWRU/#D#GLRGH#DQG#D#FDSDFLWRU1

7KH#5185.××5$#XVHV#WKH#VDPH#FKLS#DV#ZKDW#LV#HPSOR\HG#LQ#WKH#5185.××4$24%#,DQG#KDV#D#GULYH#SLQ#+(;7,#IRU DQ# H[WHUQDO# WUDQVLVWRU# LQVWHDG# RI# DQ# /[# SLQ1# # $V# LW# LV# SRVVLEOH# WR# ORDG# D# ODUJH# RXWSXW# FXUUHQW# ZLWK# D# SRZHU# WUDQVLVWRU ZKLFK#KDV#D#ORZ#VDWXUDWLRQ#YROWDJH/#5185.××5$#,LV#UHFRPPHQGDEOH#WR#XVHUV#ZKR#QHHG#DQ#RXWSXW#FXUUHQW#DV#ODUJH#DV EHWZHHQ#VHYHUDO#WHQV#P$#DQG#VHYHUDO#KXQGUHGV#P$1

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FEATURES

6PDOO#1XPEHU#RI#([WHUQDO#&RPSRQHQWV 111111111111111111111111111 2QO\#DQ#LQGXFWRU/#D#GLRGH#DQG#D#FDSDFLWRU

+5185.××4$2××4%,

8OWUD#/RZ#,QSXW#&XUUHQW#RQ#6WDQGE\ 11111111111111111111111111111111 7<31#3—$

+LJK#2XWSXW#9ROWDJH#$FFXUDF\ 111111111111111111111111111111111111111111 “518(

/RZ#5LSSOH#DQG#/RZ#1RLVH

/RZ#6WDUW0XS#9ROWDJH1111111111111111111111111111111111111111111111111111111111 0$;1#31<9

+LJK#(IILFLHQF\ 1111111111111111111111111111111111111111111111111111111111111111111 7<31#;3(

,QFOXGLQJ#D#'ULYHU#7UDQVLVWRU#ZLWK#/RZ#21#5HVLVWDQFH

7ZR#.LQGV#RI#'XW\#5DWLR 1111111111111111111111111111111111111111111111111111 ::(#+××4$/#××5$,2#88(#+××4%,

2XWSXW#9ROWDJH11111111111111111111111111111111111111111111111111111111111111111111 6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#5139#WR

8189#LV#SRVVLEOH#+UHIHU#WR#6HOHFWLRQ#*XLGH,

/RZ#7HPSHUDWXUH0'ULIW#&RHIILFLHQW#RI#2XWSXW#9ROWDJH11111 7<31#“433SSP2ƒ&

6PDOO#3DFNDJHV 1111111111111111111111111111111111111111111111111111111111111111111 62705608#+0LQL00ROG,

APPLICATIONS

3RZHU#VRXUFH#IRU#EDWWHU\0SRZHUHG#HTXLSPHQW1

3RZHU#VRXUFH#IRU#FDPHUDV/#FDPFRUGHUV/#9&5V/##DQG#KDQG0KHOG#FRPPXQLFDWLRQ#HTXLSPHQW1

3RZHU#VRXUFH#IRU#WKRVH#DSSOLDQFHV#ZKLFK#UHTXLUH#KLJKHU#FHOO#YROWDJH#WKDQ#WKDW#RI#EDWWHULHV1

1

RICOH RN5RK212A-TL, RN5RK212A-TR, RN5RK221A-TL, RN5RK221A-TR, RN5RK221B-TL Datasheet

RN5RK××1A/××1B/××2A

BLOCK DIAGRAM

Lx*

 

 

Vref

VOUT

5

LX

Limiter

 

2

 

V

 

 

Buffer

 

 

-

VFM Control

+

5

OSC 100kHz

EXT*

Chip Enable

 

4

GND

1

CE

*) LX pin: only for RN5RK××4$2××4%

SELECTION GUIDE

7KH#RXWSXW#YROWDJH/#WKH#GULYHU#W\SH/#WKH#GXW\#F\FOH#DQG#WKH#WDSLQJ#W\SH#IRU#WKH#,&V#FDQ#EH#VHOHFWHG#DW#WKH#XVHU*V#UH0 TXHVW1

7KH#VHOHFWLRQ#FDQ#EH#PDGH#E\#GHVLJQDWLQJ#WKH#SDUW#QXPEHU#DV#VKRZQ#EHORZ=

5185.#××××0××#3DUW#1XPEHU

 

− −− −

 

D E F G

 

 

 

Code

 

Contents

 

 

 

D

 

6HWWLQJ#2XWSXW#9ROWDJH#+9287,#=

 

6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#5139#WR#8189#LV#SRVVLEOH1

 

 

 

 

 

 

 

'HVLJQDWLRQ#RI#'ULYHU

E

 

4=#,QWHUQDO#/[#7U1#'ULYHU

 

 

5=#([WHUQDO#7U1#'ULYHU

 

 

 

 

 

'HVLJQDWLRQ#RI#'XW\#&\FOH

F

 

$=#::(

 

 

%=#88(

 

 

 

G

 

'HVLJQDWLRQ#RI#7DSLQJ#W\SH

 

([1#75/#7/#+UHIHU#WR#7DSLQJ#6SHFLILFDWLRQV/#75#W\SH#LV#SUHVFULEHG#DV#D#VWDQGDUG1,

 

 

 

 

 

2

RN5RK××1A/××1B/××2A

PIN CONFIGURATION

 

SOT-23-5

5

4

(mark side)

1 2 3

PIN DESCRIPTION

Pin No.

Symbol

Pin description

 

 

 

4

&(

&KLS#(QDEOH#3LQ

 

 

 

5

9287

6WHS0XS#2XWSXW#0RQLWRULQJ#3LQ/#3RZHU#6XSSO\#+IRU#GHYLFH#LWVHOI,

 

 

 

6

1&

1R#&RQQHFWLRQ

 

 

 

7

*1'

*URXQG#3LQ

 

 

 

8

/;

6ZLWFKLQJ#3LQ#+1FK#2SHQ#'UDLQ,

 

 

 

Pin No.

Symbol

Pin description

 

 

 

4

&(

&KLS#(QDEOH#3LQ

 

 

 

5

9287

6WHS0XS#2XWSXW#0RQLWRULQJ#3LQ/#3RZHU#6XSSO\#+IRU#GHYLFH#LWVHOI,

 

 

 

6

1&

1R#&RQQHFWLRQ

 

 

 

7

*1'

*URXQG#3LQ

 

 

 

8

(;7

([WHUQDO#7U1#'ULYH#3LQ#+&026#2XWSXW,

 

 

 

3

RN5RK××1A/××1B/××2A

ABSOLUTE MAXIMUM RATINGS

Symbol

Item

Rating

Unit

 

 

 

 

9287

6WHS0XS#2XWSXW#3LQ#9ROWDJH

<

9

 

 

 

 

9/;

/;#3LQ#9ROWDJH

<

9

 

 

 

 

9(;7

(;7#3LQ#9ROWDJH

²316#WR#9287#.316

9

 

 

 

 

9&(

&(#3LQ#9ROWDJH

²316#WR#9287#.316

9

 

 

 

 

,/;

/[#3LQ#2XWSXW#&XUUHQW

833

P$

 

 

 

 

,(;7

(;7#3LQ#2XWSXW#&XUUHQW

“63

P$

 

 

 

 

3'

3RZHU#'LVVLSDWLRQ

583

P:

 

 

 

 

7RSW

2SHUDWLQJ#7HPSHUDWXUH#5DQJH

²73#WR#.;8

ƒ&

 

 

 

 

7VWJ

6WRUDJH#7HPSHUDWXUH#5DQJH

²88#WR#.458

ƒ&

 

 

 

 

ABSOLUTE MAXIMUM RATINGS

$EVROXWH#0D[LPXP#UDWLQJV#DUH#WKUHVKROG#OLPLW##YDOXHV#WKDW#PXVW#QRW#EH#H[FHHGHG#HYHQ#IRU#DQ#LQVWDQW#XQGHU#DQ\#FRQ0 GLWLRQV1#0RUHRYHU/#VXFK#YDOXHV#IRU#DQ\#WZR#LWHPV#PXVW#QRW#EH#UHDFKHG#VLPXOWDQHRXVO\1#2SHUDWLRQ#DERYH#WKHVH#DEVR0 OXWH#PD[LPXP#UDWLQJV#PD\#FDXVH#GHJUDGDWLRQ#RU#SHUPDQHQW#GDPDJH#WR#WKH#GHYLFH1#7KHVH#DUH#VWUHVV#UDWLQJV#RQO\#DQG GR#QRW#QHFHVVDULO\#LPSO\#IXQFWLRQDO#RSHUDWLRQ#EHORZ#WKHVH#OLPLWV1

4

RN5RK××1A/××1B/××2A

ELECTRICAL CHARACTERISTICS

RN5RK 1A/ 1B

 

 

 

 

 

7RSW 58ƒ&

Symbol

Item

 

Conditions

MIN.

TYP.

MAX.

Unit

 

 

 

 

 

 

 

 

9287

2XWSXW#9ROWDJH

9,1

VHW#9287×319/#,287 4P$

×31<:8

 

×41358

9

 

 

 

 

 

 

 

 

 

9,1

,QSXW#9ROWDJH

 

 

 

 

 

;

9

 

 

 

 

 

 

 

92872 7RSW

2XWSXW#9ROWDJH#7HPSHUDWXUH

073ƒ&7RSW;8ƒ&

 

“433

 

SSP2ƒ&

 

&RHIILFLHQW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9VWDUW

6WDUW08S#9ROWDJH

9,1 3959-4

 

31:8

31<

9

9VWDUW2 7RSW

6WDUW08S#9ROWDJH#7HPSHUD0

073ƒ&7RSW;8ƒ&

 

0419

 

P92ƒ&

WXUH#&RHIILFLHQW

9,1 3959-4

 

 

9KROG

+ROG0RQ#9ROWDJH#+××4$,

9,1 5939-4

31:

 

 

9

9KROG

+ROG0RQ#9ROWDJH#+××4%,

9,1 5939-4

31<

 

 

9

,''5

6XSSO\#&XUUHQW5

9287

9&( VHW#9287.3189

 

5

8

—$

 

 

 

 

 

 

 

 

,VWDQE\

6WDQGE\#&XUUHQW

9287

99/#9&( 39

 

 

318

—$

 

 

 

 

 

 

 

 

 

,/;OHDN

/[#/HDNDJH#&XUUHQW

9287

9/;

;9

 

 

4

—$

 

 

 

 

 

 

 

 

 

IRVF

0D[LPXP#2VFLOODWRU#)UH0

9287

9&(

VHW#9287×31<9

;3

433

453

N+]

TXHQF\

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IRVF2 Topt

)UHTXHQF\#7HPSHUDWXUH#&R0

073ƒ&7RSW;8ƒ&

 

3174

 

N+]2

HIILFLHQW

 

 

ƒ&

 

 

 

 

 

 

 

 

 

'XW\

2VFLOODWRU#'XW\#&\FOH#+××4$,

9287

9&(

VHW#9287×31<9/#21

:3

::

;8

(

 

 

+9/;#´/µ#VLGH,

 

 

 

 

'XW\

2VFLOODWRU#'XW\#&\FOH#+××4%,

9287

9&(

VHW#9287×31<9/#21

7:

88

96

(

 

 

+9/;#´/µ#VLGH,

 

 

 

 

9O[OLP

9/[#9ROWDJH#/LPLW

9287

9&(

41<89/#/[#6ZLWFK

317

319

31;

9

21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9287

9&(

VHW#9287×31<9/

 

 

 

 

9&(+

&(#´+µ#,QSXW#9ROWDJH

-XGJPHQW#LV#PDGH#E\#WKH#/[

31<

 

 

9

 

 

ZDYHIRUP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9287

9&(

VHW#9287×31<9/

 

 

 

 

9&(/

&(#´/µ#,QSXW#9ROWDJH

-XGJPHQW#LV#PDGH#E\#WKH#/[

 

 

316

9

 

 

ZDYHIRUP

 

 

 

 

 

 

 

 

 

 

 

 

 

,&(+

&(#´+µ#,QSXW#&XUUHQW

9287

9139/#9&( 9139

0318

3

318

—$

 

 

 

 

 

 

 

 

,&(/

&(#´/µ#,QSXW#&XUUHQW

9287

9139/#9&( 3139

0318

3

318

—$

 

 

 

 

 

 

 

,''4

6XSSO\#&XUUHQW4#-5

513992875179

 

58

83

—$

,''4

6XSSO\#&XUUHQW4#-5

5189928751<9

 

63

88

—$

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

RN5RK××1A/××1B/××2A

Symbol

Item

Conditions

MIN.

TYP.

MAX.

Unit

 

 

 

 

 

 

 

,''4

6XSSO\#&XUUHQW4#-5

613992876179

 

68

93

—$

,''4

6XSSO\#&XUUHQW4#-5

6189928761<9

 

73

98

—$

,''4

6XSSO\#&XUUHQW4#-5

713992877179

 

78

:8

—$

,''4

6XSSO\#&XUUHQW4#-5

7189928771<9

 

83

;3

—$

,''4

6XSSO\#&XUUHQW4#-5

813992878189

 

93

<3

—$

,/;

/[#6ZLWFKLQJ#&XUUHQW

513992875179/#9/; 3179

;3

 

 

P$

 

 

 

 

 

 

 

,/;

/[#6ZLWFKLQJ#&XUUHQW

5189928751<9/#9/; 3179

433

 

 

P$

 

 

 

 

 

 

 

,/;

/[#6ZLWFKLQJ#&XUUHQW

613992876179/#9/; 3179

453

 

 

P$

 

 

 

 

 

 

 

,/;

/[#6ZLWFKLQJ#&XUUHQW

6189928761<9/#9/; 3179

473

 

 

P$

 

 

 

 

 

 

 

,/;

/[#6ZLWFKLQJ#&XUUHQW

713992877179/#9/; 3179

493

 

 

P$

 

 

 

 

 

 

 

,/;

/[#6ZLWFKLQJ#&XUUHQW

7189928771<9/#9/; 3179

4;3

 

 

P$

 

 

 

 

 

 

 

,/;

/[#6ZLWFKLQJ#&XUUHQW

813992878189/#9/; 3179

533

 

 

P$

 

 

 

 

 

 

 

*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

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