STEP-UP DC/DC CONTROLLER
1
NO. EA-088-0204
OUTLINE
!"!##$% $ &&' &'"!!&("$
) $ )$&& *$ &" *)$%& +"$ *$,!&
)*)$"$ "$ *! $" *$$"$%& +&-" ./012" 3&'!!&*+))
$( !"!##$% $,!) 4' , $&,!$$ *$$" **
!'5*% *$!
,!$ $ $ , $ $&&( $ 6# * '& ! ,!$ $ $
, $&&()36#%$ $(,
" ((&$ $&&() (!&&( 78) )"$ $"& $*$) $+ , (!
&&( 7,.36* -9: %$2 ;,.#* <-9: %$2 3 ) ! $ " * ) )
$+ ,*) ,,"," ((&$ $") $!* & $&%
' )) *1 (!! $" '-
&( ,)& $ ' $ $&!
& ! $" * ' !'$.0& +"!!&="&& $/01
&&%&2*$) ,-$+ " $(' !$&!$$$& " +$
FEATURES
• $("$ (!>3.)6#%$2
• 4$!" 0& +$+ ;0 0
• 6"& $1 (! $5"$ $." !" #&(,$ ' $ $&! 2
• '! $)6&& 5="$( <-9:*-9:
• #" ((&(!78
• 9+)$0& +3"( ?;8
• /01&&%&(!0.9( (!<02
• ,&&-+ < $ .!-++ @;,,2 A
./$#%&!,$ 2
APPLICATIONS
• $ $ 0& +'")! &="!,$
• $ $ 0& +'")1#$#
R1211x
2
BLOCK DIAGRAMS
Version A/C Version B/D
VFB
AMPOUT
EXT
VIN
GND
DELAY
OSC
UVLO
Latch
+
-+
-
-
-
+
-
+
-
Vref
DTC
V
FB
CE
EXT
V
IN
GND
DTC
DELAY
OSC
UVLO
Latch
+
-+
-
-
-
+
-
+
-
Chip
Enable
Vref
SELECTION GUIDE
4$ * && )="$(* ! $&)"$ $*$ !-+ (!) 4$
& "B="
& $$,' +$ $+ ! $",'$&'C
← A",
↑↑
Code Contents
#+$ $)-+(!D
#DA
AD<
#+$ $)! $&5"$ $
3D-9:*' 3/!$. $&,!$ $(!2
6D-9:*' !$.4$ $&,!$ $(!*' $(2
D<-9:*' 3/!$. $&,!$ $(!2
#D<-9:*' !$.4$ $&,!$ $(!*' $(2
PIN CONFIGURATIONS
SON-6 SOT-23-6W
1
2
3
6
5
4
DELAY
GND
EXT
AMPOUT/CE
V
FB
V
IN
(MARK SIDE)
645
132
EXT GND V
IN
(MARK SIDE)
DELAY
AMPOUT/CE
V
FB
R1211x
3
PIN DESCRIPTIONS
Pin No Symbol Description
SON6 SOT23-6W
#13E
$) $&!
.) $+" !" #&() $2
; FA# F"$$
< $&5#%$." !" 2
GG0
,1 '"!!&($
;<0
)% 5-$),$ $+" !" 0& +
3/ 3,!&)" !" $.30$2
!$&$.6#0$*3 % H9H2
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
0,1 0,1$0& + ; 0
0(;7 $" !" 0& + <I0,1J< 0
0'/< #13E$0& + <I0,1J< 0
0$03 3/$0& + <I0,1J< 0
0&( $4$!" 0& + <I0,1J< 0
0)% 0)%$0& + <I0,1J< 0
4$03 3/$"$ ? ,3
4(;7
$4$" #%" !" "
$ ?; ,3
''#! $ ; ,
! ! $+,! "$+ GIJ@; K
+ +,! "$+ ;;IJ; K
R1211x
4
ELECTRICAL CHARACTERISTICS
• R1211x002A
! L;K
Symbol
Item Conditions Min. Typ. Max. Unit
0,1 ! $+4$!" 0& + ; 0
0)% 0)%0& +&$ 0,1L<<0 0
∆0)%
∆
0)%0& +
,! "))$ GKK≤! ≤@;K ?; !!,
K
4)% 0)%4$!" "$ 0,1L0*0)%L00 >3
)26& && 5="$( 0,1L<<0*0'/<L0)%L0 ;7; @; -9:
∆)26&
∆
&& 5="$(
,! "))$ GK≤! ≤@;K ?G -9:
K
4'' "!!&("$ 0,1L0*0'/<L0)%L0*
$& 7 >3
, ( ,",#" ((& 0,1L<<0*
H9H @ 7 7G 8
(;7+ H9HA $ 0,1L<<0*4(;7L,3 ; Ω
(;7/
H1H
A $ 0,1L<<0*4(;7L,3 < Ω
4'/<
#&($+
"$ 0,1L<<0*0'/<L0)%L0 ; ; ; >3
4'/<
#&($#+"
$
0,1L0)%L;0*
0'/<L0 ; ;; 7 ,3
0'/<
#&($#
&
0,1L<<0*
0)%L0*0'/<L0→0 7; ; 0
67$57 ) , 0,1L<<0 78)
$++ G; 7 <; ,
089/2
/01#
&
0,1L<<0→0*
0'/<L0)%L0 < 0
089/2
/01#
9(
0,1L0→<<0*
0'/<L0)%L0 @ < @ 0
4$03
3H9H" !"
"$
0,1L<<0*0$03L0*
0)%L70 G; 7 ; ,3
4$03
3H1H" !"
"$
0,1L<<0*0$03L0*
0)%L0 < 7 >3
R1211x
5
• R1211x002B
! L;K
Symbol Item Conditions Min. Typ. Max. Unit
0,1 ! $+4$!" 0& + ; 0
0)% 0)%0& +&$ 0,1L<<0 7@; ; 0
∆0)%
∆
0)%0& +
,! "))$ GK≤! ≤@;K ?; !!,
K
4)% 0564$!" "$ 0,1L0*0)%L00 >3
)26& && 5="$( 0,1L<<0*0'/<L0)%L0 ;7; @; -9:
∆)26&∆&& 5="$(
,! "))$ GK≤! ≤@;K ?G -9:
K
4'' "!!&("$ 0,1L0*0'/<L0)%L0*
$& 7 >3
, ( ,",#" ((& 0,1L<<0*H9H @ 7 7G 8
(;7+ H9HA $ 0,1L<<0*4(;7L,3 ; Ω
(;7/ H1HA $ 0,1L<<0*4(;7L,3 < Ω
4'/<
#&($+
"$ 0,1L<<0*0'/<L0)%L0 ; ; ; >3
4'/<
#&($#+"
$ 0,1L0)%L;0*0'/<L0 ; ;; 7 ,3
0'/<
#&($#
&
0,1L<<0*0)%L0*
0'/<L0→0 7; ; 0
67$57 ) , 0,1L<<0 G; 7 <; ,
089/2
/01#
&
0,1L<<0→0*
0'/<L0)%L0 < 0
089/2
/01#
9(
0,1L0→<<0*
0'/<L0)%L0 @ < @ 0
467% $("$ 0,1L0*0&(L0 >3
4&(+ H9H4$!" "$ 0,1L0*0&(L0 ; ; >3
4&(/ H1H4$!" "$ 0,1L0*0&(L0 ; ; >3
0&(+ H9H4$!" 0& + 0,1L0*0&(L0→0 ; 0
0&(/ H1H4$!" 0& + 0,1L;0*0&(L0→0 < 0
R1211x
6
• R1211x002C
! L;K
Symbol Item Conditions Min. Typ. Max. Unit
0,1 ! $+4$!" 0& + ; 0
0)% 0)%0& +&$ 0,1L<<0 7@; ; 0
∆0)%
∆
0)%0& +
,! "))$ GK≤! ≤@;K ?; !!,
K
4)% 0564$!" "$ 0,1L0*0)%L00 >3
)26& && 5="$( 0,1L<<0*0'/<L0)%L0 G < < -9:
∆)26&∆&& 5="$(
,! "))$ GK≤! ≤@;K ? -9:
K
4'' "!!&("$ 0,1L0*0'/<L0)%L0*
$& < ; >3
, ( ,",#" ((& 0,1L<<0*H9H @ 7 7G 8
(;7+ H9HA $ 0,1L<<0*4L,3 ; Ω
(;7/ H1HA $ 0,1L<<0*4L,3 < Ω
4'/<
#&($+
"$ 0,1L<<0*0'/<L0)%L0 G; >3
4'/<
#&($#+
"$ 0,1L0)%L;0*0'/<L0 ; ;; 7 ,3
0'/< #&($# & 0,1L<<0*0)%L0*
0'/<L0→0 7; ; 0
67$57 ) , 0,1L<<0 ; ; ,
089/2 /01# & 0,1L<<0→0*
0'/<L0)%L0 < 0
089/2 /01# 9( 0,1L0→<<0*
0'/<L0)%L0 @ < @ 0
4$03 3H9H" !" "$ 0,1L<<0*0$03L0*
0)%L70 G; 7 ; ,3
4$03 3H1H" !" "$ 0,1L<<0*0$03L0*
0)%L0 ; ; ; >3
R1211x
7
• R1211x002D
! L;K
Symbol Item Conditions Min. Typ. Max. Unit
0,1 ! $+4$!" 0& + ; 0
0)% 0)%0& +&$ 0,1L<<0 7@; ; 0
∆0)%
∆
0)%0& +
,! "))$ GK≤! ≤@;K ?; !!,
K
4)% 0564$!" "$ 0,1L0*0)%L00 >3
)26& && 5="$( 0,1L<<0*0'/<L0)%L0 G < < -9:
∆)26&
∆
&& 5="$(
,! "))$ GK≤! ≤@;K ? -9:
K
4'' "!!&("$ 0,1L0*0'/<L0)%L0*
$& < ; >3
, ( ,",#" ((& 0,1L<<0*H9H @ 7 7G 8
(;7+ H9HA $ 0,1L<<0*4L,3 ; Ω
(;7/ H1HA $ 0,1L<<0*4L,3 < Ω
4'/<
#&($+
"$ 0,1L<<0*0'/<L0)%L0 G; >3
4'/<
#&($#+
"$ 0,1L0)%L;0*0'/<L0 ; ;; 7 ,3
0'/<
#&($#
&
0,1L<<0*0)%L0*
0'/<L0→0 7; ; 0
67$57 ) , 0,1L<<0 ; ; ,
089/2
/01#
&
0,1L<<0→0*
0'/<L0)%L0 < 0
089/2
/01#
9(
0,1L0→<<0*
0'/<L0)%L0 @ < @ 0
467% $("$ 0,1L0*0&(L0 >3
4&(+ H9H4$!" "$ 0,1L0*0&(L0 ; ; >3
4&(/ H1H4$!" "$ 0,1L0*0&(L0 ; ; >3
0&(+ H9H4$!" 0& + 0,1L0*0&(L0→0 ; 0
0&(/ H1H4$!" 0& + 0,1L;0*0&(L0→0 < 0
R1211x
8
TYPICAL APPLICATIONS AND TECHNICAL NOTES
<R1211x002A/R1211x002C>
VIN
DELAY
GND
EXT
VFB
AMPOUT
Inductor
R3
C4
C3
R1
R2
VOUTDiode
NMOS
C1
C2
C5 R4
NMOS : IRF7601 (International Rectifier)
Inductor : LDR655312T-100 10µH (TDK) for R1211x002A
: LDR655312T-220 22µH (TDK) for R1211x002C
Diode : CRS02 (Toshiba)
C1 : 4.7µF (Ceramic)
C2 : 0.22µF (Ceramic)
C3 : 10µF (Ceramic)
C4 : 680pF (Ceramic)
C5 : 2200pF (Ceramic)
R1 : Output Voltage Setting Resistor 1
R2 : Output Voltage Setting Resistor 2
R3 : 30kΩ
R4 : 30kΩ
<R1211x002B/R1211x002D>
VIN
DELAY
GND
EXT
VFB
CE
Inductor
R3
C4
C3
R1
R2
VOUTDiode
NMOS
C1
C2
CE Control
NMOS : IRF7601 (International Rectifier)
Inductor : LDR655312T-100 10µH (TDK) for R1211x002B
: LDR655312T-220 22µH (TDK) for R1211x002D
Diode : CRS02 (Toshiba)
C1 : 4.7µF (Ceramic)
C2 : 0.22µF (Ceramic)
C3 : 10µF (Ceramic)
C4 : 680pF (Ceramic)
R1 : Setting Output Voltage Resistor 1
R2 : Setting Output Voltage Resistor 2
R3 : 30kΩ
MA N,!&" ,(!!& " !" %& +=",$ ;0&4) " !" %& +
=",$ ;0,* $+)A$'$%% &, * )*
$&,!$$
R1211x
9
•/>5,! $%&")(!! '$0,1!$$FA#*'$$ (!&!
!& $%
•4$ ,) ! ) $+&( ,) & ! $*'$$ (!&!!& $)
!%"!+*$$ '$#&(!$$FA#!$) 4' ,$,",'$+ $
•$$ >5,%&")! '$0287$FA#*<'$$ (!&!!& $) !%
"!+.,,$%&"),>5 >524) ! $) ,!##$% ,("$
&*" $ &", (!! $ ), (!
•$$ ! '$0287$ %$+!$ *G'$$ (!&!!& $) !%"!+
! $%&")G!$$% )" !" %& + $+(!&%&" '$!5
$!5
•" !" 0& +$ ' % )%& + $+*$'$$ (!&!!& $)
!%"!+) $ ),"&
" !" 0& +L0)%×.J2
JL-Ω,,$$+) $
•! $)1 ! $" )&&'D$ 4 ,,"," ((&*+ $
$&! *)#13E!$ 3$,,"," ((&$ $"$ %& +)#(/$<!$
&(%& + &*0'/<*" !" H1H !$$ "$)) $&!'5
& & ! $! $*,- 4 $(,' !$$,- %$ ,)
6#%$ '* ' !'$
&( ,)& ! $$&"& ' *0'/<*$#&($+"$ *4'/<*$ $
),"&
L×0'/<4'/<
$) ,,"," ( $&)&( ,*+ ! & $&(!$
" !" H1H
•3)3%$* %&"$! $$+)G*;*<*$G'$$ %+,
O" $,!&,$ $),-$+!,!$ $4) !-$)0287,(&+*
!-$,(!-$ 0)%!$$,- ! $"$ &4$ * <*'$$ (!&
!!& $) !%"!+,,$ $%&")<$ $+),-Ω ;-Ω$*
$&%&'&&
•3)6#%$*!$" !" FA#&%& $(,
R1211x
10
•& '5* *$ $" ' $ $+.0& +*"$ *'2) 4
!'5' &' &%& +!$$+$4$!" 0& + & "$$ 5,!& &(
' &'0)" -( (!' &'%"$ 45*$' ) ' $+!$
$ $& $ ' $+* !- %& + ,( +$ "( $ $" * ) ,,$
%& + &$)! $$ 0287 ,) $+%& +,
∗!),$)!'" ' "$+ 4!$$ $&,!$$ , " &
,!$$ )("!!& $
Output Current and Selection of External Components
<Basic Circuit>
i1
CL
LX Tr
VIN
IOUT
VOUT
i2
Inductor
GND
Diode
<Circuit through L>
Discontinuous Mode Continuous Mode
IL
ILxmax
ILxmin Tf
t
To n
T=1/fosc
Toff
IL ILxmax
ILxmin
t
To n
T=1/fosc
Iconst
Toff
',*$ $"",$$ $"",) !"!' $++"&
!$$+$ $ $"" )$" "$
#"$+ $ , ) $ * '$ %& + $ $" 0,1* "$
0,1× 1)* & !'*21*'"!!&' $!" *$$$ ),"&
1 0
,1
7RQ
21 ×= ∫ 5,"&
!"!" *& !'"!!&),!'"&"$+)) ,4$ *$!" "
$ .02870,12× 1* )& !'*2))$$ ),"&
R1211x
11
1 200.0 ,1287,1
7I
2)) ×−×= ∫ 5,"&
4$ ),"&*),$ ,)' $+(%$ $" $$+, "%+&
!'*$9$ $ ),"&
P 1 200.0 1 0Q2. ,1287,1
7I
,1
7RQ
2))21$9 ×−×+××+= ∫∫ 5,"&<
4$$ &*'$)L)) "* $" "$ ,$ $"* $ ! $)' $+
+"& ,$ $"",
4$ $ $"",* % $) "$ ="& '$$ ,$)) ,
,1287,1 ×−== 5,"&G
5" * & !'*$9 ="& " !" & !'*0287×4287* "*
{}
201.$0200.1$0)4 287
,1,1287
,126&287 ×××=−××××= 5,"&;
$4287,, $),"&;* "$ )&' "+ $" * $ ,,$ $""
$ $"""$ "+ $" 4$ * $*
{}
287,1,1287
,126&287 04$ 0200.1$0)4 ×+−××××= 5,"&
4$ ,,$ * !-"$ *41,)&'$+ "+ $" $ %)&&'D
1$04$ ,41 ,1 ×+= 5,"&
),"&G**$41,*
,1287,1287 ××+×= 5,"&@
)*!-"$ , $4287$$+ %&")41,* $ $)$!" $" !" *$
$&,!$$ "&&
4$ ),"&*!-"$ 41, $ $"",$&"& " 4$ L$ ),"&
!&$ $%$ &&"& $*$ &"(1' $ $&,!$$
$ $&" "&,,"," !" "$ '$;8$@8) &"& $!&&(*'$ 41
&+*0,1&'* &)0,1+$ ' $ $) ' 3) 0287*0).,"
<02) "&$
R1211x
12
TIMING CHART
• R1211x002A/R1211x002C
R1
R2
VOUT VFB
+
-
VREF
AMPOUT
-
+
-
-
SS
DTC
EXT PWM Comparator
EXT
OP AMP
• R1211x002B/R1211x002D
R1
R2
V
OUT
V
FB
+
-
V
REF
AMPOUT
-
+
-
-
SS
DTC
EXT PWM Comparator
EXT
OP AMP
R) ! $S
) ! $ $+),!'$)&&'D
. !2
%& +&%&)$++"&&(($ $ "$ " ) 4$! 05()&%&'$!"
3&+"&&($+0287$+"! $!" %& +&%&O" ) !'$* )*0)%%&
+$+"! $+%& +' $!" %& +$ $)$3/ H1H*$' $+
$
. !2
$ %& +&%&), $+%& +' $)$,*' $+! $
05()&%&+"&&($ + ' &%&0287&$+' &$$+05()$0)%#" ((&
!$$ &' &%&,$+3/**$#) G$!" ,$&$ ,!
R1211x
13
. !<2
$0*) ! $)$05(),$ $ %& +.L02$ ' $+!
$,$,&,
SS
V
FB
,V
REF
DTC
AMPOUT
AMPOUT
SS,V
REF
Step1 Step2 Step3
V
FB
V
OUT
V
IN
R1 $! $S
! $ ) 1 ! $" )&&'D$3/ , H9H $ 4 ,,",
" ((&*+ $ $&! *)#13E!$ 3$,,"," ((&$ $"$ %&
+)#13E!$&(%& + &*0'/<*" !" H1H !$$ "$)) $&
!'5
& & ! $! $*,- 4 $(,' !$$,- %$ ,)
6#%$ '*,-"!!&(%& +'$ /01 &&'*$,-
"! $,&$!" %& +
#"$+ ) ,*) " ((&,( ,,",*! $" $ '-$#13E!$
) FA#&%&
&( ,)& ! $$&"& ' *0'/<*$#&($+"$ *4'/<*$ $
),"&
L×0'/<4'/<
$) ,,"," ( $&)&( ,*+ ! & $&(!$
" !" H1H
AMPOUT
AMPOUT
DTC
Output Short
Normal LatchedMaxduty Operation
EXT
DELAY
V
DLY
R1211x
14
TEST CIRCUITS
• R1211x002A/R1211x002C
*Oscillator Frequency,
Maximum Duty Cycle, VFB Voltage Test *Consumption Current Test
OSCILLOSCOPE
V
IN
GND
EXT
V
FB
DELAY
3.3V
VIN
GND
VFB
DELAY
6V
A
*EXT "H" ON Resistance *EXT "L" ON Resistance
OSCILLOSCOPE
V
IN
GND
EXT
V
FB
DELAY
3.3V
150Ω
V
IN
GND
EXT
V
FB
DELAY
3.3V
150Ω
V
*DELAY Pin Charge Current *DELAY Pin Discharge Current
V
IN
GND
V
FB
DELAY
3.3V
A
VIN
GND
VFB
DELAY
2.5V
A
0.1V
R1211x
15
*DELAY Pin Detector Threshold Voltage Test *AMP "H" Output Current/"L"
Output Current Test
OSCILLOSCOPE
V
IN
GND
EXT
V
FB
DELAY
3.3V
V
IN
GND
AMPOUT
V
FB
DELAY
3.3V
A
0.9V/1.1V
1V
*UVLO Detector Threshold/Hysteresis Range Test
OSCILLOSCOPE
VIN
GND
EXT
VFB
DELAY
*Soft-start Time Test
VIN
GND
EXT
AMPOUT
VFB
DELAY
Coil
C5 C2
OSCILLOSCOPE
C4 R4
R3
C1 R1
R2
Rout
VOUT
Diode
NMOS
C3
R,!$$ S
4$" .12 D>9.#T1#;;<2
#.#2 D.2
! D@!5.,2*D>5.$ &",2J>5.,2*
<D@>5.$ &",2J>5.,2*GD!5.,2*;D>5.$ &",2
A$ D45.4$ $ $& )2
DD7-Ω*D-Ω*<D<-Ω*GD<-Ω*" D-Ω<<Ω
R1211x
16
• R1211x002B/R1211x002D
*Oscillator Frequency, *Consumption Current Test
Maximum Duty Cycle, VFB Voltage Test
OSCILLOSCOPE
V
IN
GND
EXT
CE
V
FB
DELAY
3.3V
V
IN
GND
CE
V
FB
DELAY
6V
A
*EXT "H" ON Resistance *EXT "L" ON Resistance
OSCILLOSCOPE
V
IN
GND
EXT
CE
V
FB
DELAY
3.3V
150Ω
VIN
GND
EXT
CE
VFB
DELAY
3.3V
150Ω
V
*DELAY Pin Charge Current *DELAY Pin Discharge Current
VIN
GND
CE
VFB
DELAY
3.3V
A
VIN
GND
CE
VFB
DELAY
2.5V
A
0.1V
*DELAY Pin Detector Threshold Voltage Test *Standby Current Test
V
IN
GND
EXT
CE
V
FB
DELAY
3.3V
OSCILLOSCOPE
V
IN
GND
CE
V
FB
DELAY
6V
A
R1211x
17
*UVLO Detector Threshold/ * CE "L" Input Current/"H" Input Current Test
Hysteresis Range Test
V
IN
GND
EXT
CE
V
FB
DELAY
OSCILLOSCOPE
V
IN
GND
CE
V
FB
DELAY
6V
A
0V/6V
*CE "L" Input Voltage/"H" Input Voltage Test
VIN
GND
EXT
CE
VFB
DELAY
OSCILLOSCOPE
2.5V/6V
*Soft-start Time Test
VIN
GND
EXT
CE
VFB
DELAY
Coil
C5 C2
OSCILLOSCOPE
0V/3.3V
R3
C1 R1
R2
Rout
VOUT
Diode
NMOS
C3
R,!$$ S
4$" .12 D>9.#T1#;;<2
#.#2 D.2
! D@!5.,2*D>5.$ &",2J>5.,2*
<D@>5.$ &",2J>5.,2*;D>5.$ &",2
A$ D45.4$ $ $& )2
DD7-Ω*D-Ω*<D<-Ω
R1211x
18
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1211x002A R1211x002A
4.9
5.1
5.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
1 10 100 1000
L=10µH
V
OUT
=5V
V
IN
=2.5V
V
IN
=3.3V
9.8
10.2
10.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
1 10 100 1000
L=10µH
V
OUT
=10V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
R1211x002A R1211x002B
14.7
15.3
15.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
1 10 100 1000
L=10µH
V
OUT
=15V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
4.9
5.1
5.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
1 10 100 1000
L=10µH
V
OUT
=5V
V
IN
=2.5V
V
IN
=3.3V
R1211x002B R1211x002B
9.8
10.2
10.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
1 10 100 1000
L=10µH
V
OUT
=10V
V
IN
=2.5V
V
IN
=3.3V
V
IN
=5.0V
14.7
15.3
15.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
1 10 100 1000
L=10µH
V
OUT
=15V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
R1211x
19
R1211x002C R1211x002C
4.9
5.1
5.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
1 10 100 1000
L=22µH
V
OUT
=5V
V
IN
=2.5V
V
IN
=3.3V
9.8
10.2
10.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
1 10 100 1000
L=22µH
V
OUT
=10V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
R1211x002C R1211x002D
14.7
15.3
15.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
1 10 100 1000
L=22µH
V
OUT
=15V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
4.9
5.1
5.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
1 10 100 1000
L=22µH
V
OUT
=5V
V
IN
=2.5V
V
IN
=3.3V
R1211x002D R1211x002D
9.8
10.2
10.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
1 10 100 1000
L=22µH
V
OUT
=10V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
14.7
15.3
15.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
1 10 100 1000
L=22µH
V
OUT
=15V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
R1211x
20
2) Efficiency vs. Output Current
R1211x002A R1211x002A
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=10µH
V
OUT
=5V
V
IN=2.5V
VIN=3.3V
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=10µH
V
OUT
=10V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
R1211x002A R1211x002B
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=10µH
V
OUT
=15V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=10µH
V
OUT
=5V
V
IN=2.5V
VIN=3.3V
R1211x002B R1211x002B
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=10µH
V
OUT
=10V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=10µH
V
OUT
=15V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
R1211x
21
R1211x002C R1211x002C
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=22µH
V
OUT
=5V
V
IN=2.5V
VIN=3.3V
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=22µH
V
OUT
=10V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
R1211x002C R1211x002D
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=22µH
V
OUT
=15V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=22µH
V
OUT
=5V
V
IN=2.5V
VIN=3.3V
R1211x002D R1211x002D
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=22µH
V
OUT
=10V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
0
20
40
100
60
80
Output Current IOUT(mA)
Efficiency η(%)
1 10 100 1000
L=22µH
V
OUT
=15V
V
IN=2.5V
VIN=3.3V
VIN=5.0V
R1211x
22
3) V)% Voltage vs. Input Voltage (Topt =25°C)
R1211x002x
Input Voltage V
IN
(V)
1015
1010
1005
1000
995
990
985
23456
V
FB
Voltage(mV)
Topt=25°C
4) Oscillator Frequency vs. Input Voltage (Topt=25°C)
R1211x002A/B R1211x002C/D
Input Voltage V
IN
(V)
900
600
800
700
500
23456
Oscillator Frequency(kHz)
Topt=25°C
Input Voltage VIN(V)
400
250
350
300
200
23456
Oscillator Frequency(kHz)
Topt=25°C
5) Supply Current vs. Input Voltage (Topt=25°C)
R1211x002A R1211x002B
Input Voltage V
IN
(V)
600
500
400
300
200
100
0
23456
Supply Current(
µ
A)
Topt=25°C
Input Voltage VIN(V)
600
100
200
400
500
300
0
23456
Supply Current(µA)
Topt=25°C
R1211x
23
R1211x002C R1211x002D
Input Voltage VIN(V)
100
200
400
300
0
23456
Supply Current(µA)
Topt=25°C
Input Voltage VIN(V)
100
200
400
300
0
23456
Supply Current(µA)
Topt=25°C
6) Maximum Duty Cycle vs. Input Voltage (Topt=25°C)
R1211x002A/B R1211x002C/D
Input Voltage VIN(V)
84
86
88
90
94
96
92
80
82
23456
Maximum Duty Cycle(%)
Topt=25°C
Input Voltage VIN(V)
84
86
88
90
94
96
92
80
82
23456
Maximum Duty Cycle(%)
Topt=25°C
7) VFB Voltage vs. Temperature
R1211x002x
Temperature Topt(°C)
985
990
995
1000
1010
1015
1005
-50 -25 0 25 7550 100
V
FB
Voltage(mV)
VIN=3.3V
R1211x
24
8) Oscillator Frequency vs. Temperature
R1211x002A/B R1211x002C/D
Temperature Topt(°C)
500
600
700
800
900
-50 -25 0 25 7550 100
Oscillator Frequency(kHz)
V
IN
=3.3V
Temperature Topt(°C)
200
250
300
350
400
-50 -25 0 25 7550 100
Oscillator Frequency(kHz)
V
IN
=3.3V
9) Supply Current vs. Temperature
R1211x002A R1211x002B
Temperature Topt(°C)
0
100
300
500
600
-50 -25 0 25 7550 100
Supply Current(µA)
400
200
V
IN
=3.3V
Temperature Topt(°C)
0
100
300
500
600
-50 -25 0 25 7550 100
Supply Current(µA)
400
200
V
IN
=3.3V
R1211x002C R1211x002D
Temperature Topt(°C)
0
100
300
400
-50 -25 0 25 7550 100
Supply Current(µA)
200
V
IN
=3.3V
Temperature Topt(°C)
0
100
300
400
-50 -25 0 25 7550 100
Supply Current(µA)
200
V
IN
=3.3V
R1211x
25
10) Maximum Duty Cycle vs. Temperature
R1211x002A/B R1211x002C/D
84
86
88
90
94
96
92
80
82
Maximum Duty Cycle(%)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
84
86
88
90
94
96
92
80
82
Maximum Duty Cycle(%)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
11) EXT "H" On Resistance vs. Temperature
R1211x002x
4
5
6
7
8
2
3
EXT "H" ON Resistance(Ω)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
12) EXT "L" On Resistance vs. Temperature
R1211x002x
3
4
5
1
2
EXT "L" ON Resistance(Ω)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
R1211x
26
13) Soft-start Time vs. Temperature
R1211x002A/B R1211x002C/D
10
14
12
16
6
8
Soft-start Time(ms)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
10
14
12
16
6
8
Soft-start Time(ms)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
14) UVLO Detector Threshold vs. Temperature
R1211x002x
2200
2250
2300
2100
2150
UVLO Detector Threshold(mV)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
15) AMP "H" Output Current vs. Temperature
R1211x002A/C
800
1000
1200
1400
1600
400
600
AMP "H" Output Current(µA)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
R1211x
27
16) AMP "L" Output Current vs. Temperature
R1211x002A R1211x002C
40
50
60
70
80
20
30
AMP "L" Output Current(µA)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
40
50
60
70
80
20
30
AMP "L" Output Current(µA)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
17) DELAY Pin Charge Current vs. Temperature
R1211x002A/B R1211x002C/D
4
6
5
7
2
3
DELAY Pin Charge Current(µA)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
4
6
5
7
2
3
DELAY Pin Charge Current(µA)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=3.3V
18) DELAY Pin Detector Threshold vs. Temperature
R1211x002x
1020
1000
1040
960
980
DELAY Pin Detector Threshold(mV)
-50 -25 0 25 7550 100
Temperature Topt(°C)
VIN=3.3V
R1211x
28
19) DELAY Pin Discharge Current vs. Temperature
R1211x002x
4
8
6
10
0
2
DELAY Pin Discharge Current(µA)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=2.5V
20) CE "L" Input Voltage vs. Temperature
R1211x002B/D
800
900
1000
1100
1200
600
700
CE "L" Input Voltage(mV)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=2.5V
21) CE "H" Input Voltage vs. Temperature
R1211x002B/D
800
900
1000
1100
1200
600
700
CE "H" Input Voltage(mV)
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=6.0V
R1211x
29
22) Standby Current vs. Temperature
R1211x002B/D
0.4
0.8
0.6
1.0
-0.2
0.2
Standby Current(µA)
0.0
-50 -25 0 25 7550 100
Temperature Topt(°C)
V
IN
=6.0V
23) Load Transient Response
R1211x002A
5.6
5.0
4.4
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=10µH
V
IN
=3.3V, C3=22µF
V
OUT
=5V, I
OUT
=1-100mA
V
OUT
I
OUT
R1211x002A
11.2
10.0
8.8
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=10µH
V
IN
=3.3V, C3=22µF
V
OUT
=10V, I
OUT
=1-100mA
V
OUT
I
OUT
R1211x
30
R1211x002A
16.8
15.0
13.2
300
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=10µH
V
IN
=3.3V, C3=22µF
V
OUT
=15V, I
OUT
=1-50mA
V
OUT
I
OUT
R1211x002B
5.6
5.0
4.4
300
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=10µH
V
IN
=3.3V, C3=22µF
V
OUT
=5V, I
OUT
=1-100mA
V
OUT
I
OUT
R1211x002B
11.2
10.0
8.8
300
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=10µH
V
IN
=3.3V, C3=22µF
V
OUT
=10V, I
OUT
=1-100mA
V
OUT
I
OUT
R1211x
31
R1211x002B
V
OUT
I
OUT
16.8
15.0
13.2
300
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=10µH
V
IN
=3.3V, C3=22µF
V
OUT
=15V, I
OUT
=1-50mA
R1211x002C
5.6
5.0
4.4
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=22µH
V
IN
=3.3V, C3=22µF
V
OUT
=5V, I
OUT
=1-100mA
V
OUT
I
OUT
R1211x002C
11.2
10.0
8.8
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=22µH
V
IN
=3.3V, C3=22µF
V
OUT
=10V, I
OUT
=1-100mA
V
OUT
I
OUT
R1211x
32
R1211x002C
16.8
15.0
13.2
300
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=22µH
V
IN
=3.3V, C3=22µF
V
OUT
=15V, I
OUT
=1-50mA
V
OUT
I
OUT
R1211x002D
5.6
5.0
4.4
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=22µH
V
IN
=3.3V, C3=22µF
V
OUT
=5V, I
OUT
=1-100mA
V
OUT
I
OUT
R1211x002D
11.2
10.0
8.8
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=22µH
V
IN
=3.3V, C3=22µF
V
OUT
=10V, I
OUT
=1-100mA
V
OUT
I
OUT
R1211x
33
R1211x002D
16.8
15.0
13.2
300
200
100
0
Time (5ms/div)
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
L=22µH
V
IN
=3.3V, C3=22µF
V
OUT
=15V, I
OUT
=1-50mA
V
OUT
I
OUT
24) Power-on Response
R1211x002A R1211x002B
16
2
8
6
4
12
14
10
0
0 5 10 15 20 25
Output Voltage(V)
Time (5ms/div)
L=10µH
V
IN
=3.3V, I
OUT
=10mA
(c)V
OUT
=15V
(b)V
OUT
=10V
(a)V
OUT
=5V
V
IN
16
2
8
6
4
12
14
10
0
0 5 10 15 20 25
Output Voltage(V)
Time (5ms/div)
L=10µH
V
IN
=3.3V, I
OUT
=10mA
(c)V
OUT
=15V
(b)V
OUT
=10V
(a)V
OUT
=5V
V
IN
R1211x002C R1211x002D
16
2
8
6
4
12
14
10
0
0 5 10 15 20 25
Output Voltage(V)
Time (5ms/div)
L=22µH
V
IN=3.3V, IOUT=10mA
(c)VOUT=15V
(b)VOUT=10V
(a)VOUT=5V
VIN
16
2
8
6
4
12
14
10
0
0 5 10 15 20 25
Output Voltage(V)
Time (5ms/div)
L=22µH
V
IN=3.3V, IOUT=10mA
(c)VOUT=15V
(b)VOUT=10V
(a)VOUT=5V
VIN
R1211x
34
25) Turn-on speed with CE pin
R1211x002B R1211x002D
16
2
8
6
4
12
14
10
0
0 5 10 15 20 25
Output Voltage(V)
Time (5ms/div)
L=10µH
V
IN=3.3V, IOUT=10mA
(c)VOUT=15V
(b)VOUT=10V
(a)VOUT=5V
CE
16
2
8
6
4
12
14
10
0
0 5 10 15 20 25
Output Voltage(V)
Time (5ms/div)
L=22µH
V
IN=3.3V, IOUT=10mA
(c)VOUT=15V
(b)VOUT=10V
(a)VOUT=5V
CE
