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NO. EA-045-0006
SOT-23-5 VFM STEP-UP DC/DC CONVERTER
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FEATURES
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2XWSXW#9R O W D J H 11111111111111111111111111111111111111111111111111111111111111111111 6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#5139#WR
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APPLICATIONS
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•
1
RN5RK××1A/××1B/××2A
BLOCK DIAGRAM
*) LX pin: only for RN5RK
Lx*
EXT*
4$2××4%
××
Vref
5
5
VLX Limiter
Buffer
VFM Control
OSC 100kHz
Chip Enable
1
-
+
CE
2
4
OUT
V
GND
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
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Code Contents
287
D
6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#5139#WR#8189#LV#SRVVLEOH1
6HWWLQJ#2XWSXW#9R O W D J H #+9
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2
PIN CONFIGURATION
RN5RK××1A/××1B/××2A
SOT-23-5
54
(mark side)
PIN DESCRIPTION
Pin No. Symbol Pin description
4 &( &KLS#(QDEOH#3LQ
5 9
6 1& 1R#&RQQHFWLRQ
7 *1' *URXQG#3LQ
8 /
Pin No. Symbol Pin description
4 &( &KLS#(QDEOH#3LQ
5 9
6 1& 1R#&RQQHFWLRQ
7 *1' *URXQG#3LQ
287
;
287
12
3
6WHS0XS#2XWSXW#0RQLWRULQJ#3LQ/#3RZHU#6XSSO\#+IRU#GHYLFH#LWVHOI,
6ZLWFKLQJ#3LQ#+1FK#2SHQ#'UDLQ,
6WHS0XS#2XWSXW#0RQLWRULQJ#3LQ/#3RZHU#6XSSO\#+IRU#GHYLFH#LWVHOI,
8 (;7 ([WHUQDO#7U1#'ULYH#3LQ#+&026#2XWSXW,
3
RN5RK××1A/××1B/××2A
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
287
9
/;
9
6WHS0XS#2XWSXW#3LQ#9R O W D J H < 9
/;#3LQ#9R O W D J H < 9
(;7
9
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9
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287#
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287#
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ABSOLUTE MAXIMUM RATINGS
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GLWLRQV1#0RUHRYHU/#VXFK#YDOXHV#IRU#DQ\#WZR#LWHPV#PXVW#QRW#EH#UHDFKHG#VLPXOWDQHRXVO\1#2SHUDWLRQ#DERYH#WKHVH#DEVR0
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RN5RK××1A/××1B/××2A
ELECTRICAL CHARACTERISTICS
•
RN5RK 1A/ 1B
Symbol Item Conditions MIN. TYP. MAX. Unit
7R S W 58ƒ&
287
9
,1
9
287
2∆7R S W
9
∆
2XWSXW#9R O W D J H 9,1 VHW#9
,QSXW#9R O W D J H ; 9
2XWSXW#9R O W D J H #7HPSHUDWXUH
&RHIILFLHQW
073ƒ&≤7R S W≤;8ƒ& “433 SSP2ƒ&
9VWDUW 6WDUW08S#9R O W D J H 9,1 39→59
9VWDUW2∆7R S W
∆
6WDUW08S#9R O W D J H #7H P S H U D 0
WXUH#&RHIILFLHQW
073ƒ&≤7R S W≤;8ƒ&
,1
39→59-
9
9KROG +ROG0RQ#9RO W D J H #+××4$, 9,1 59→39-
9KROG +ROG0RQ#9RO W D J H #+××4%, 9,1 59→39-
''5
,
6XSSO\#&XUUHQW5 9
,VWDQE\ 6WDQGE\#&XUUHQW 9
/;OHDN
,
/[#/HDNDJH#&XUUHQW 9
0D[LPXP#2VFLOODWRU#)UH0
I
RVF
287 9&(
287
287 9/;
287 9&(
9
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I
RVF2
∆
HIILFLHQW
Topt
∆
073ƒ&≤7R S W≤;8ƒ& 3174
287
VHW#9
×
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4
4
4
287
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287
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;9 4 —$
VHW#9
287
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433 453 N+]
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&(#´+µ#,QSXW#&XUUHQW 9
&(#´/µ#,QSXW#&XUUHQW 9
6XSSO\#&XUUHQW4#
6XSSO\#&XUUHQW4#
-5
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287 9&(
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287 9&(
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287
287
287
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287 9&(
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287
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287
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287
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5139≤9
5189≤9
287
5179 58 83 —$
≤
287
51<9 63 88 —$
≤
5
RN5RK××1A/××1B/××2A
Symbol Item Conditions MIN. TYP. MAX. Unit
,
,
,
,
,
''4
''4
''4
''4
''4
6XSSO\#&XUUHQW4#
6XSSO\#&XUUHQW4#
6XSSO\#&XUUHQW4#-
6XSSO\#&XUUHQW4#-
6XSSO\#&XUUHQW4#-
-5
-5
5
5
5
6139≤9
6189≤9
7139≤9
7189≤9
8139≤9
287
6179 68 93 —$
≤
287
61<9 73 98 —$
≤
287
7179 78 :8 —$
≤
287
71<9 83 ;3 —$
≤
287
8189 93 <3 —$
≤
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;
;
;
;
;
;
/[#6ZLWFKLQJ#&XUUHQW 5139≤9
/[#6ZLWFKLQJ#&XUUHQW 5189≤9
/[#6ZLWFKLQJ#&XUUHQW 6139≤9
/[#6ZLWFKLQJ#&XUUHQW 6189≤9
/[#6ZLWFKLQJ#&XUUHQW 7139≤9
/[#6ZLWFKLQJ#&XUUHQW 7189≤9
/[#6ZLWFKLQJ#&XUUHQW 8139≤9
*1) Condition: An Output load resistor RL is connected between V
287
287
287
287
287
287
287
5179/#9/
≤
51<9/#9/
≤
6179/#9/
≤
61<9/#9/
≤
7179/#9/
≤
71<9/#9/
≤
8189/#9/
≤
;
3179 ;3 P$
;
3179 433 P$
;
3179 453 P$
;
3179 473 P$
;
3179 493 P$
;
3179 4;3 P$
;
3179 533 P$
OUT
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 (I
DD1
) 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: V
OUT=VCE
=Setting Output Voltage ×0.96
6
RN5RK××1A/××1B/××2A
RN5RK
•
××
××
××××
2A
7R S W 58ƒ&
Symbol Item Conditions MIN. TYP. MAX. Unit
287
9
,1
9
2
V
OUT
∆
∆
2XWSXW#9R O W D J H 9,1 VHW#9
,QSXW#9R O W D J H ; 9
Output Voltage Temperature
Topt
073ƒ&≤7R S W≤;8ƒ& “433 SSP2ƒ&
287
319/#,
×
287
4P$
31<:8
×
41358 9
×
Coefficient
9VWDUW 6WDUW08S#9R O W D J H 9,1 39→59
Vstart/∆Topt
∆
''5
,
Coefficient
6XSSO\#&XUUHQW5 9
,VWDQE\ 6WDQGE\#&XUUHQW 9
0D[LPXP#2VFLOODWRU#)UH0
)
Start-Up Voltage Temperature
RVF
TXHQF\
-40°C≤Topt≤85°C
=0V→2V*
V
IN
287 9&(
287
287 9&(
9
99/#9&( 39 318 —$
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1
VHW#9
VHW#9
31: 31; 9
0419 P92ƒ&
287
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287
31<9 ;3 433 453 N+]
×
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I
RVF2
∆
HIILFLHQW
Topt
∆
073ƒ&≤7R S W≤;8ƒ& 3174 N+]2ƒ&
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&(+
9
9
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,
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&(#´+µ#,QSXW#9R O W D J H
&(#´/µ#,QSXW#9R O W D J H
&(#´+µ#,QSXW#&XUUHQW 9
&(#´/µ#,QSXW#&XUUHQW 9
6XSSO\#&XUUHQW4 5139≤9
6XSSO\#&XUUHQW4 6139≤9
6XSSO\#&XUUHQW4 7139≤9
6XSSO\#&XUUHQW4 8139≤9
(;7#´+µ#2XWSXW#9RO W D J H
287 9&(
9
21#+9
287 9&(
9
VHW#9
(;7#
´+µ#VLGH,
VHW#9
-XGJPHQW#LV#PDGH#E\#WKH#(;7
287
287
31<9/
×
31<9/
×
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31< 9
ZDYHIRUP
287 9&(
9
VHW#9
-XGJPHQW#LV#PDGH#E\#WKH#(;7
287
×
31<9
316 9
ZDYHIRUP
287
9139/#9&( 9139 0318 3 318 —$
287
9139/#9&( 3139 0318 3 318 —$
5
5
5
5
53 73 —$
58 83 —$
63 93 —$
68 :3 —$
0413
5139≤9
(;7 9287
9
287
51<9/#(;7#QR#ORDG-
≤
287
61<9/#(;7#QR#ORDG-
≤
287
71<9/#(;7#QR#ORDG-
≤
287
8189/#(;7#QR#ORDG-
≤
287
51<9/
≤
03179
P$
(;7+
,
(;7#´+µ#2XWSXW#9RO W D J H
6139≤9
(;7 9287
9
287
61<9/
≤
03179
0418 P$
7
RN5RK××1A/××1B/××2A
Symbol Item Conditions MIN. TYP. MAX. Unit
287
(;7+
,
(;7#´+µ#2XWSXW#9RO W D J H
7139≤9
(;7 9287
9
8189/
≤
03179
0513 P$
(;7+
,
(;7+
,
(;7+
,
(;7#´/µ#2XWSXW#9R O W D J H 5139≤9
(;7#´/µ#2XWSXW#9R O W D J H 6139≤9
(;7#´/µ#2XWSXW#9R O W D J H 7139≤9
*1) Condition: An Output load resistor RL is connected between V
287
287
287
51<9/#9
≤
61<9/#9
≤
8189/#9
≤
(;7
3179 413 P$
(;7
3179 418 P$
(;7
3179 513 P$
OUT
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 (I
DD1
) 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: V
OUT=VCE
=Setting Output Voltage ×0.96
8
TEST CIRCUITS
SBD
1KΩ
Lx
RN5RK××1A/××1B/××2A
OUT
V
L
V
IN
Osilloscope
*) When V
Lx
GND
OUT
V
CE
V
R
C
L
L
GND
CE
T est Circuit 1 T est Circuit 2
Lx
V
OUT
C
GND
CE
L
T est Circuit 3
LX
lim and ILX are measured, the 5Ωresistor is used. Otherwise 1kΩis used.
A
C
L
&RPSRQHQWV#,QGXFWRU +/, =#433—+/#553—+#+6XPLGD#(OHFWULF#&R1/#/WG>#&'087,
'LRGH +6%',=#0$:54#+0DWVXVKLWD#(OHFWURQLFV#&RUSRUDWLRQ>#6FKRWWN\#7\ S H ,
/
&DSDFLWRU +&
, =#7:—)#+7DQWDOXP#7\ S H ,
8VLQJ#WKHVH#WHVW#FLUFXLWV#FKDUDFWHULVWLFV#GDWD#KDV#EHHQ#REWDLQHG#DV#VKRZQ#RQ#WKH#IROORZLQJ#SDJHV1
7H V W #&LUFXLW#4 =#7<3,&$/#&+$5$&7(5,67,&6#+4,0+:,
7H V W #&LUFXLW#5 =#7<3,&$/#&+$5$&7(5,67,&6#+<,0+44,
7H V W #&LUFXLW#6 =#7<3,&$/#&+$5$&7(5,67,&6#+;,/#+45,0+49,
9
RN5RK××1A/××1B/××2A
SBD
L
Tr
Rb
EXT
V
OUT
V
L
IN
V
Cb
GND
CE
C
T est Circuit 1 T est Circuit 2
EXT
V
OUT
Osilloscope
C
GND
CE
L
T est Circuit 3 T est Circuit 4
&RPSRQHQWV#,QGXFWRU +/, =#5:—+#+6XPLGD#(OHFWULF#&R1/#/WG>#&'0437,
'LRGH +6%',=#5%444&#+52+0#&R1/#/WG>#6FKRWWN\#7\ S H ,
/
&DSDFLWRU +&
, =#7:—)×5+7DQWDOXPH#7\ S H ,
7UDQVLVWRU +7U ,=#56'495;*
%DVH#5HVLVWRU +5E, =#633Ω%DVH#&DSDFLWRU#+&E,=#3134—)
EXT
GND
100Ω
Osilloscope
V
EXT
GND
OUT
CE
A
C
L
OUT
V
C
CE
L
8VLQJ#WKHVH#WHVW#FLUFXLWV#FKDUDFWHULVWLFV#GDWD#KDV#EHHQ#REWDLQHG#DV#VKRZQ#RQ#WKH#IROORZLQJ#SDJHV1
7H V W #&LUFXLW#4 =#7<3,&$/#&+$5$&7(5,67,&6#+4,0+8,
7H V W #&LUFXLW#5 =#7<3,&$/#&+$5$&7(5,67,&6#+;,0+43,
7H V W #&LUFXLW#6 =#7<3,&$/#&+$5$&7(5,67,&6#+44,0+47,
7H V W #&LUFXLW#7 =#7<3,&$/#&+$5$&7(5,67,&6#+9,/#+:,
10
TYPICAL CHARACTERISTICS
RN5RK××1A/××1B/××2A
RN5RK
•
××
××
××××
1A/B
1) Output Voltage vs. Output Current (Topt=25°C)
RN5RK301A RN5RK301A
3.5
3.0
(V)
2.5
OUT
2.0
VIN=0.9V
1.5
1.0
Output V oltage V
0.5
0.0
0 204060 16014080 100 120
1.0V
1.3V
Output Current I
OUT
L=100µH
2.0V
1.5V
(mA)
RN5RK301B RN5RK301B
L=100µH
2.0V
(V)
OUT
3.5
3.0
2.5
2.0
1.5
VIN=1.0V
1.3V
1.5V
3.5
3.0
(V)
2.5
OUT
Output V oltage V
2.0
1.5
1.0
0.5
0.0
1.0V 1.5V 2.0V
VIN=0.9V
0 204060 16014080 100 120
1.3V
Output Current I
3.5
(V)
OUT
3.0
2.5
2.0
1.5
1.3V
VIN=1.0V
1.5V
OUT
L=220µH
(mA)
L=220µH
2.0V
1.0
Output V oltage V
0.5
0.0
0 102030 5040
Output Current IOUT(mA)
RN5RK501A RN5RK501A
6
5
(V)
OUT
4
VIN=0.9V
3
2
Output V oltage V
1
0
0 50 100 150 200
2.0V
1.5V
Output Current I
OUT
(mA)
L=100µH
4.0V
3.0V
1.0
Output V oltage V
0.5
0.0
0 102030 5040
Output Current I
6
5
(V)
OUT
4
VIN=0.9V
3
2
Output V oltage V
1
0
0 50 100 150 200
1.5V 2.0V 3.0V
Output Current I
OUT
OUT
(mA)
(mA)
L=220µH
4.0V
11
RN5RK××1A/××1B/××2A
RN5RK501B RN5RK501B
6
5
(V)
OUT
4
2.0V
3
IN
=1.5V
V
2
L=100µH
2.5V 3.0V
4.0V
(V)
OUT
6
5
2.0V
4
IN
=1.5V
V
3
2
2.5V
L=220µH
4.0V
3.0V
Output V oltage V
1
0
0 50 100 150 200
Output Current I
OUT
(mA)
2) Efficiency vs. Output Current (Topt=25°C)
RN5RK301A RN5RK301A
100
90
80
70
60
Efficiency η(%)
50
VIN=0.9V
40
0 204060 16014080 100 120
1.0V
Output Current I
1.5V
1.3V
OUT
L=100µH
(mA)
2.0V
Output V oltage V
1
0
0 50 100 150 200
Output Current I
100
90
80
70
60
Efficiency η(%)
50
40
1.0V
VIN=0.9V
0 204060 16014080 100 120
1.3V
Output Current I
1.5V
OUT
OUT
(mA)
(mA)
L=220µH
2.0V
12
RN5RK301B RN5RK301B
100
90
80
VIN=1.0V
70
60
Efficiency η(%)
50
40
0 102030 5040
Output Current I
1.3V
1.5V
OUT
(mA)
L=100µH
2.0V
100
90
80
70
Efficiency η(%)
VIN=1.0V
60
50
0 102030 5040
Output Current I
OUT
L=220µH
2.0V1.5V1.3V
(mA)
100
RN5RK××1A/××1B/××2A
RN5RK501A RN5RK501A
L=100µH
100
L=220µH
90
80
2.0V
70
VIN=0.9V
60
Efficiency η(%)
50
40
0 50 100 150 200
1.5V
Output Current I
OUT
(mA)
RN5RK501B RN5RK501B
100
90
2.0V
2.5V
VIN=1.5V
Efficiency η(%)
80
70
60
4.0V
3.0V
L=100µH
4.0V
3.0V
90
80
70
Efficiency η(%)
Efficiency η(%)
60
50
40
100
90
80
70
60
1.5V
VIN=0.9V
2.0V
0 50 100 150 200
Output Current I
2.0V
2.5V
VIN=1.5V
OUT
(mA)
4.0V
3.0V
L=220µH
4.0V
3.0V
50
40
0 50 100 150 200
Output Current I
OUT
(mA)
3) Ripple Voltage vs. Output Current (Topt=25°C)
RN5RK301A RN5RK301A
140
120
100
80
60
40
Ripple V oltage Vr(mVp-p)
20
0
0 204060 16014080 100 120
1.3V
1.0V
VIN=0.9V
Output Current I
1.5V
OUT
L=100 µH
2.0V
(mA)
50
40
0 50 100 150 200
Output Current I
160
140
120
100
1.3V
80
60
40
Ripple V oltage Vr(mVp-p)
20
0
04020 8060 100 160140120
1.0V
VIN=0.9V
Output Current I
1.5V
OUT
OUT
(mA)
(mA)
L=220µH
2.0V
13
RN5RK××1A/××1B/××2A
RN5RK301B RN5RK301B
45
40
35
30
25
20
15
10
Ripple V oltage Vr(mVp-p)
5
0
0 102030 5040
200
1.3V
VIN=1.0V
Output Current I
RN5RK501A RN5RK501A
1.5V
L=100µH
OUT
(mA)
L=100µH
2.0V
45
40
35
30
25
20
15
10
Ripple V oltage Vr(mVp-p)
5
0
1.3V1.0V
1.5V
0 102030 5040
Output Current I
200
L=220µH
OUT
(mA)
L=220µH
2.0V
150
100
2.0V
50
Ripple V oltage Vr(mVp-p)
0
0 50 100 150 200
1.5V
VIN=0.9V
Output Current I
OUT
RN5RK501B RN5RK501B
140
120
100
80
60
2.0V
40
Ripple V oltage Vr(mVp-p)
20
VIN=1.5V
0
0 50 100 150 200
2.5V
Output Current I
OUT
3.0V
4.0V
(mA)
L=100µH
3.0V
4.0V
(mA)
150
2.0V
100
50
Ripple V oltage Vr(mVp-p)
0
0 50 100 150 200
1.5V
VIN=0.9V
Output Current I
140
120
100
80
60
40
Ripple V oltage Vr(mVp-p)
20
0
VIN=1.5V
0 50 100 150 200
Output Current I
2.5V
OUT
3.0V
OUT
3.0V
(mA)
(mA)
4.0V
L=220µH
4.0V
14
4) Start-up/Hold-on Voltage vs. Output Current (Topt=25°C)
RN5RK301A RN5RK501A
1.4
L=100µH
1.4
RN5RK××1A/××1B/××2A
L=100µH
1.2
1.0
Vstart
0.8
0.6
Vstart/Vhold(V)
0.4
Start-up/Hold-on Voltage
0.2
0.0
015105
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
Vstart/Vhold(V)
0.4
Start-up/Hold-on Voltage
0.2
0.0
015105
1.2
1.0
Vstart
0.8
0.6
Vhold
015105
Output Current I
Vhold
Output Current I
OUT
(mA)
Vstart/Vhold(V)
0.4
Start-up/Hold-on Voltage
0.2
0.0
RN5RK301B RN5RK501B
Vstart
Vhold
Output Current I
OUT
L=100µH
(mA)
2.0
1.8
1.6
1.4
1.2
Vstart
1.0
0.8
0.6
Vstart/Vhold(V)
0.4
Start-up/Hold-on Voltage
0.2
0.0
015105
Vhold
Output Current I
OUT
OUT
(mA)
L=100µH
(mA)
5) Output Voltage vs. Temperature
RN5RK301A RN5RK501A
3.10
(V)
3.05
OUT
3.00
2.95
Output V oltage V
2.90
I
OUT=0m
OUT
I
OUT
A
=10mA
=30mA
I
-50 -25 1007502550
Temperature Topt( )
VIN=1.5V,L=100µH
5.10
(V)
5.05
OUT
5.00
4.95
Output V oltage V
4.90
-50 -25 1007502550
IOUT=30mA
IOUT=0mA
IOUT=10mA
Temperature Topt( )
VIN=3.0V,L=100µH
15
RN5RK××1A/××1B/××2A
6) Start-up Voltage vs. Temperature
RN5RK501A RN5RK501B
1
L=100 µH
1
L=100µH
0.8
0.6
0.4
0.2
Start-up Voltage Vstart(V)
0
-50 -25 1007502550
Temperature Topt( )
7) Hold-on Voltage vs. Temperature
RN5RK501A RN5RK501B
1
0.8
0.6
0.4
L=100µH
0.8
0.6
0.4
0.2
Start-up Voltage Vstart(V)
0
-50 -25 1007502550
Temperature Topt( )
1
0.8
0.6
0.4
L=100µH
0.2
Hold-on V oltage Vhold(V)
0
-50 -25 1007502550
Temperature Topt( )
8) Lx Switching Current vs. Temperature
RN5RK301A RN5RK501A
500
400
300
200
100
LxSwitching Current ILx(mA)
0
-50 -25 1007502550
Temperature Topt( )
0.2
Hold-on V oltage Vhold(V)
0
-50 -25 1007502550
Temperature Topt( )
500
400
300
200
100
LxSwitching Current ILx(mA)
0
-50 -25 1007502550
Temperature Topt( )
16
9) Supply Current 1 vs. Temperature
RN5RK301A RN5RK501A
50
RN5RK××1A/××1B/××2A
80
(µA)
40
DD1
30
20
Supply Current1 I
10
-50 -25 1007502550
Temperature Topt( )
70
(µA)
DD1
60
50
40
Supply Current1 I
30
-50 -25 1007502550
Temperature Topt( )
10) Supply Current 2 vs. Temperature 11) Standby Current 3 vs. Temperature
RN5RK301A RN5RK301A
(µA)
DD2
5
4
3
2
1
0.8
0.6
0.4
1
Supply Current2 I
0
-50 -25 1007502550
Temperature Topt( )
12) Oscillator Duty Cycle vs. Temperature
RN5RK301A RN5RK301B
85
80
75
Oscullator Duty Cycle Maxduty(%)
70
-50 -25 1007502550
Temperature Topt( )
0.2
Supply Current3 Istandby(µA)
0
-50 -25 1007502550
Temperature Topt( )
60
58
56
54
52
Oscullator Duty Cycle Maxduty(%)
50
-50 -25 1007502550
Temperature Topt( )
17
RN5RK××1A/××1B/××2A
13) CE “H” Input Voltage vs. Temperature 14) CE “L” Input Voltage vs. Temperature
RN5RK301A RN5RK301A
(V)
CEH
1
0.8
(V)
CEL
1
0.8
0.6
0.4
0.2
CE H Input Voltage V
0
-50 -25 1007502550
Temperature Topt( )
0.6
0.4
0.2
CE L Input Voltage V
0
-50 -25 1007502550
Temperature Topt( )
15) Maximum Oscillator Frequency vs. Temperature 16) VLX Voltage Limit vs. Temperature
RN5RK301A RN5RK301A
0.8
120
(kHz)
OSC
110
100
90
80
70
60
50
-50 -25 1007502550
Maximum Oscillator Frequency f
Temperature Topt( )
(V)
0.7
Lx
0.6
Voltage Limit V
0.5
Lx
V
0.4
-50 -25 1007502550
Temperature Topt( )
18
RN5RK××1A/××1B/××2A
RN5RK
•
××
××
××××
2A
1) Output Voltage vs. Output Current (Topt=25°C)
RN5RK302A RN5RK502A
1.5V
OUT
L=27µH
2.0V
(mA)
3.5
3.0
(V)
2.5
OUT
2.0
1.5
1.0
Output V oltage V
VIN=0.9V
0.5
0
0 200 400 600 800
1.3V
1.0V
Output Current I
2) Efficiency vs. Output Current (Topt=25°C)
RN5RK302A RN5RK502A
L=27µH
2.0V
Efficiency η(%)
100
90
80
70
60
50
V
IN
=0.9V
1.5V
1.3V
1.0V
6.0
5.0
(V)
OUT
4.0
IN
=1.0V
V
3.0
2.0
Output V oltage V
1.0
0.0
0 200 400 600 800
Output Current I
100
90
80
70
VIN=1.0V
60
Efficiency η(%)
50
40
1.5V
1.5V
2.0V
OUT
2.0V
(mA)
L=27µH
3.0V
L=27µH
3.0V
40
0 200 400 600 800
Output Current I
OUT
(mA)
3) Ripple Voltage vs. Output Current (Topt=25°C)
RN5RK302A RN5RK502A
OUT
L=27µH
2.0V
(mA)
250
1.3V
200
1.0V
150
100
50
Ripple V oltage Vr(mVp-p)
VIN=0.9V
0
0 200 400 600 800
1.5V
Output Current I
30
0 200 400 600 800
Output Current I
300
250
200
150
100
50
Ripple V oltage Vr(mVp-p)
0
0 200 400 600 800
1.5V
VIN=1.0V
Output Current I
OUT
2.0V
OUT
(mA)
(mA)
L=27µH
3.0V
19
RN5RK××1A/××1B/××2A
4) Start-up/Hold-on Voltage vs. Output Current (Topt=25°C)
RN5RK302A RN5RK502A
2.0
1.8
1.6
1.4
1.2
V
start
1.0
0.8
0.6
Vstart/Vhold(V)
0.4
Start-up/Hold-on Voltage
0.2
0.0
hold
V
0 20015010050
Output Current I
5) Output Voltage vs. Temperature
RN5RK302A RN5RK502A
3.10
OUT
VIN=1.2V,L=27µH
L=27µH
(mA)
2.4
2.2
2.0
1.8
1.6
Vstart,Vhold
1.4
1.2
1.0
0.8
Vstart/Vhold(V)
0.6
0.4
Start-up/Hold-on Voltage
0.2
0.0
0 20015010050
5.10
Output Current I
L=27µH
OUT
(mA)
VIN=3.0V,L=27µH
3.05
(V)
OUT
3.00
I
OUT=0m
A
2.95
I
OUT
=50mA
Output V oltage V
2.90
2.85
I
OUT
=100mA
2.80
-50 -25 1007502550
Temperature Topt( )
6) EXT “H” Output Current vs. Temperature
RN5RK302A RN5RK502A
10
9
(mA)
8
EXTH
7
6
5
4
3
2
1
EXT H Output Current I
0
-50 -25 1007502550
Temperature Topt( )
(V)
5.05
OUT
5.00
4.95
I
OUT
=100mA
Output V oltage V
4.90
-50 -25 1007502550
Temperature Topt( )
10
9
(mA)
8
EXTH
7
6
5
4
3
2
1
EXT H Output Current I
0
-50 -25 1007502550
Temperature Topt( )
I
OUT=0m
I
OUT
A
=50mA
20
7) EXT “L” Output Current vs. Temperature
RN5RK302A RN5RK502A
20
18
(mA)
16
EXTL
14
12
10
8
6
4
2
EXT L Output Current I
0
-50 -25 1007502550
Temperature Topt( )
8) Supply Current 1 vs. Temperature
RN5RK302A RN5RK502A
50
RN5RK××1A/××1B/××2A
20
18
(mA)
16
EXTL
14
12
10
8
6
4
2
EXT L Output Current I
0
-50 -25 1007502550
Temperature Topt( )
50
40
(µA)
DD1
30
20
10
Supply Current1 I
0
-50 -25 1007502550
Temperature Topt( )
40
(µA)
DD1
30
20
10
Supply Current1 I
0
-50 -25 1007502550
Temperature Topt( )
9) Supply Current 2 vs. Temperature 10) Standby Current vs. Temperature
RN5RK302A RN5RK302A
1
0.8
0.6
0.4
(µA)
DD2
5
4
3
2
1
Supply Current2 I
0
-50 -25 1007502550
Temperature Topt( )
0.2
Supply Current3 Istandby(µA)
0
-50 -25 1007502550
Temperature Topt( )
21
RN5RK××1A/××1B/××2A
11) Oscillator Duty Cycle vs. Temperature 12) Maximum Oscillator Frequency vs. Temperature
RN5RK302A RN5RK302A
85
120
110
80
100
90
(kHz)
80
OSC
75
Oscullator Duty Cycle Maxduty(%)
70
-50 -25 1007502550
Temperature Topt( )
f
70
60
Maximum Oscillator Frequency
50
-50 -25 1007502550
Temperature Topt( )
13) CE “H” Input Voltage vs. Temperature 14) CE “L” Input Voltage vs. Temperature
RN5RK302A RN5RK302A
1
(V)
0.8
CEH
0.6
0.4
0.2
CE H Input Voltage V
0
-50 -25 1007502550
Temperature Topt( )
1
(V)
0.8
CEL
0.6
0.4
0.2
CE L Input Voltage V
0
-50 -25 1007502550
Temperature Topt( )
22
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