LOW NOISE 150mA LDO REGULATOR
1
NO. EA-060-0204
OUTLINE
!
"""#"$%&"&&
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FEATURES
• -." $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $//µ0
• ""$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $/$µ0
• .12 $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $/$32+4//!0)2,
• 5#" $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $6/7+&4(58,
• .!1&&&"&2$$$$$$ $±//!9°
• % ".""$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $/$/*:92
• 502 $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ ±$/:
• !;( $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ )*+"!,
• 2$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ "&/$2""&$*2
*$/2$
• 7""+<0=>.?7=>5?,
• 7"@("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ "$)/!0
• ;"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ !AA
• !!!"$
APPLICATIONS
• ;&"B10;"&$
• ;&!"!2"!$
• ;&'!"$
R1122N
2
BLOCK DIAGRAM
R1122Nxx1A R1122Nxx1B
31
4
+
_
Current Limit
Vref
V
OUT
V
DD
CE GND
2
31
4
+
_
Current Limit
Vref
V
OUT
V
DD
CE GND
2
SELECTION GUIDE
("""&"C
'$
""!"""!"=
←;!
↑↑↑
Code Contents
"2+2,=
"&/$2""&$*2*$/2$
1""&0=
0=>.?
7=>5?
1""&"=
% $.+&"&"<""$,
R1122N
3
PIN CONFIGURATION
SOT-23-5
5
NC CE
V
OUT
GND
(mark side)
V
DD
4
123
PIN DESCRIPTION
Pin No. Symbol Description
2
"
B1 B";"
)2
";"
D % %";"
* """
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
2 "2 E$/ 2
2 "2+%%;", /$)F2G/$) 2
2 2 /$)F2G/$) 2
" // !0
;;1" */ !H
"!" D/F6* °
!" **F* °
R1122N
4
ELECTRICAL CHARACTERISTICS
• R1122Nxx1A 4*°
Symbol Item Conditions Min. Typ. Max. Unit
2 2 242G2
!0≤≤)/!0
2
×/$36
2
×$/ 2
" 242G2
H"242/$2 */ !0
∆29∆ ." 242G2
!0≤≤6/!0 D/ !2
2 12 &%.%0.500%-;-2.
0B%
" 242G2 // E/ µ0
" "+", 24242G2 /$ $/ µ0
∆29∆2 ."" 2G/$*2≤2≤I2
4)/!0 /$/* /$/ :92
#" &4(58/$*2
242G2 6/ 7
2 "2 $/ I$/ 2
∆29∆2
!&&"
4)/!0
D/°≤≤6*°±// !
9°
! ".! 24/2 )/ !0
;" $* *$/ /$/ Ω
2 "2>5? $* 2 2
2 "2>.? /$// /$* 2
" 7H4/58F//(58 )/ µ2!
R1122N
5
• R1122Nxx1B 4 * °
Symbol Item Conditions Min. Typ. Max. Unit
2 2 242G2
!0≤≤)/!0
2
×/$36
2
×$/ 2
" 242G2
H"242/$2 */ !0
∆29∆ ." 242G2
!0≤≤6/!0 D/ !2
2 12 &%.%0.500%-;-2.
0B%
" 242G2 // E/ µ0
" "+", 242G2
24B1 /$ $/ µ0
∆29∆2 ."" 2G/$*2≤2≤I2
4)/!0 /$/* /$/ :92
#" &4(58/$*2
242G2 6/ 7
2 "2 $/ I$/ 2
∆29∆2
!&&"
4)/!0
D/°≤≤6*°±// !
9°
! ".! 24/2 )/ !0
%;"" $* *$/ /$/ Ω
2 %"2>5? $* 2 2
2 %"2>.? /$// /$* 2
" 7H4/58F//(58 )/ µ2!
R1122N
6
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
4*°
Dropout Voltage
VDIF (V)
Output Voltage
VOUT (V)
Conditions Typ. Max.
$*≤2≤$I /$) /$**
$E≤2≤$6 /$6 /$DE
$3≤2≤$) /$* /$)*
$D≤2≤$E /$/ /$3
$6≤2≤*$/
4//!0
/$3 /$I
OPERATION
R1122xx1A R1122xx1B
31
4
+
_
Current Limit
Vref
V
OUT
V
DD
CE GND
R1
R2
2
R1
R2
31
4
+
_
Current Limit
Vref
V
OUT
V
DD
CE GND
2
"&"&2&(""
!&"!&""$
0"!&"!"""$
R1122N
7
TEST CIRCUITS
IN
I
OUT
V
DD
V
OUT
GND
R1122Nxx1B
Series
CE
OUT
1
4
2
3
2.2µF
IN
I
SS
V
DD
V
OUT
GND
R1122Nxx1B
Series
CE
OUT
1
4
2
3
2.2µF
Fig.1 Standard test Circuit Fig.2 Supply Current Test Circuit
IN
I
OUT
V
DD
V
OUT
GND
R1122Nxx1B
Series
CE
OUT
1
4
2
3
P.G
IN
I
OUT
V
DD
V
OUT
GND
R1122Nxx1B
Series
CE
OUT
I1 I2
1
4
2
3
2.2µF
Fig.3 Ripple Rejection, Line Transient Response Fig.4 Load Transient Response Test Circuit
Test Circuit
R1122N
8
TECHNICAL NOTES
H"""&""=
;!""
"!""!&"""&"$@
&'""%+%'"",$
+= H" " ! "" " &
!"""!"$7&! "!""
"";7$,
!!"< BD/J**AI$)+,
BD//)DJ*))*AI$)+,
BD//)DJ*DE*AI$)+,
;7.
(2"B1"&&"$&!"(""""!
$"""&$µ@!"2"B1"$
"!"""!("
$
TYPICAL APPLICATION
IN V
DD
V
OUT
GND
R1122Nxx1A
Series
CE
OUT
Cap.
+
Cap.
+
IN V
DD
V
OUT
GND
R1122Nxx1B
Series
CE
OUT
Cap.
+
Cap.
+
+% "!"",
< !$µ@+""&!$**$/2,
!D$Eµ@+""&!$*$*2,
"< !$µ@
R1122N
9
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1122N151B R1122N201B
Output Voltage VOUT(V)
V
IN
=2.0V
V
IN
=2.5V
V
IN
=3.5V
Output Current IOUT(mA)
0 100 200 300 500400
1.6
1.8
1.4
1.2
1
0.8
0.4
0.2
0.6
0
Output Voltage V
OUT
(V)
V
IN
=2.3V
V
IN
=2.5V
V
IN
=3.0V
V
IN
=4.0V
Output Current I
OUT
(mA)
0 100 200 300 500400
2.5
2
1.5
0.5
1
0
R1122N301B R1122N401B
Output Voltage V
OUT
(V)
V
IN
=3.3V
V
IN
=3.5V
V
IN
=4.0V
V
IN
=5.0V
Output Current I
OUT
(mA)
0 100 200 300 500400
3.5
3
2.5
0.5
1.5
1
2
0
Output Voltage VOUT(V)
V
IN
=4.3V
V
IN
=4.5V
V
IN
=5.0V
V
IN
=6.0V
Output Current IOUT(mA)
0 100 200 300 500400
5
4
3
1
2
0
R1122N501B
Output Voltage VOUT(V)
VIN=5.3V
VIN=5.5V
VIN=6.0V
VIN=7.0V
Output Current IOUT(mA)
0 100 200 300 500400
6
5
4
1
2
3
0
R1122N
10
2) Output Voltage vs. Input Voltage
R1122N151B R1122N201B
Output Voltage V
OUT
(V)
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
Input Voltage V
IN
(V)
12 34 675
1.600
1.500
1.400
1.300
1.200
1.100
1.000
Output Voltage V
OUT
(V)
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
Input Voltage V
IN
(V)
12 34 675
2.100
2.000
1.900
1.800
1.700
1.600
1.500
R1122N301B R1122N401B
Output Voltage V
OUT
(V)
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
Input Voltage V
IN
(V)
234 675
3.100
3.000
2.900
2.800
2.700
2.600
2.500
Output Voltage V
OUT
(V)
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
Input Voltage V
IN
(V)
234 675
4.500
4.000
3.500
3.000
2.500
R1122N501B
Output Voltage V
OUT
(V)
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
Input Voltage V
IN
(V)
234 675
5.500
5.000
4.500
4.000
3.500
3.000
2.500
R1122N
11
3) Dropout Voltage vs. Output Current
R1122N151B R1122N201B
Dropout Voltage V
DIF
(V)
Topt=-40°C
Topt=25°C
Topt=85°C
Output Current I
OUT
(mA)
0 50 150100
0.600
0.500
0.400
0.300
0.200
0.100
0.000
Dropout Voltage V
DIF
(V)
Topt=-40°C
Topt=25°C
Topt=85°C
Output Current I
OUT
(mA)
0 50 150100
0.600
0.500
0.400
0.300
0.200
0.100
0.000
R1122N301B R1122N401B
Dropout Voltage V
DIF
(V)
Topt=-40°C
Topt=25°C
Topt=85°C
Output Current I
OUT
(mA)
0 50 150100
0.600
0.500
0.400
0.300
0.200
0.100
0.000
Dropout Voltage V
DIF
(V)
Topt=-40°C
Topt=25°C
Topt=85°C
Output Current I
OUT
(mA)
0 50 150100
0.600
0.500
0.400
0.300
0.200
0.100
0.000
R1122N501B
Dropout Voltage V
DIF
(V)
Topt=-40°C
Topt=25°C
Topt=85°C
Output Current I
OUT
(mA)
0 50 150100
0.600
0.500
0.400
0.300
0.200
0.100
0.000
R1122N
12
4) Output Voltage vs. Temperature
R1122N151A/B R1122N201B
Output VoltageV
OUT
(V)
V
IN
=2.5V C
IN
=1µF
C
OUT
=2.2µF I
OUT
=30mA
Temperature Topt (°C)
-50 -25 0 25 100
50 75
1.53
1.52
1.51
1.50
1.49
1.47
1.48
Output VoltageV
OUT
(V)
V
IN
=3.0V C
IN
=1µF
C
OUT
=2.2µF I
OUT
=30mA
Temperature Topt (°C)
-50 -25 0 25 100
50 75
2.10
2.08
2.04
2.06
2.00
2.02
1.98
1.96
1.90
1.94
1.92
R1122N301A/B R1122N401A/B
Output VoltageV
OUT
(V)
V
IN
=4.0V C
IN
=1µF
C
OUT
=2.2µF I
OUT
=30mA
Temperature Topt (°C)
-50 -25 0 25 100
50 75
3.06
3.04
3.02
3.00
2.98
2.94
2.96
Output VoltageV
OUT
(V)
V
IN
=5.0V C
IN
=1µF
C
OUT
=2.2µF I
OUT
=30mA
Temperature Topt (°C)
-50 -25 0 25 100
50 75
4.08
4.06
4.04
4.00
4.02
3.98
3.92
3.96
3.94
R1122N501A/B
Output VoltageVOUT(V)
VIN=6.0V CIN=1µF
COUT=2.2µF IOUT=30mA
Temperature Topt (°C)
-50 -25 0 25 100
50 75
5.10
5.08
5.04
5.06
5.00
5.02
4.98
4.96
4.90
4.94
4.92
R1122N
13
5) Supply Current vs. Input Voltage
R1122N151B R1122N201B
Supply Current I
SS
(µA)
Input Voltage V
IN
(V)
12 34 756
120
100
80
60
40
20
0
Supply Current I
SS
(µA)
Input Voltage V
IN
(V)
12 34 756
120
100
80
60
40
20
0
R1122N301B R1122N401B
Supply Current I
SS
(µA)
Input Voltage V
IN
(V)
12 34 756
120
100
80
60
40
20
0
Supply Current I
SS
(µA)
Input Voltage V
IN
(V)
12 34 756
120
100
80
60
40
20
0
R1122N501B
Supply Current I
SS
(µA)
Input Voltage V
IN
(V)
12 34 756
120
100
80
60
40
20
0
R1122N
14
6) Supply Current vs. Temperature
R1122N151A/B R1122N201A/B
Supply Current I
SS
(µA)
Temperature Topt (°C)
-50 -25 0 25
V
IN
=2.5V C
IN
=1µF
C
OUT
=2.2µF
10050 75
200
150
100
50
0
Supply Current I
SS
(µA)
Temperature Topt (°C)
-50 -25 0 25
V
IN
=3.0V C
IN
=1µF
C
OUT
=2.2µF
10050 75
200
150
100
50
0
R1122N301A/B R1122N401A/B
Supply Current I
SS
(µA)
Temperature Topt (°C)
-50 -25 0 25
V
IN
=4.0V C
IN
=1µF
C
OUT
=2.2µF
10050 75
200
150
100
50
0
Supply Current I
SS
(µA)
Temperature Topt (°C)
-50 -25 0 25
V
IN
=5.0V C
IN
=1µF
C
OUT
=2.2µF
10050 75
200
150
100
50
0
R1122N501A/B
Supply Current I
SS
(µA)
Temperature Topt (°C)
-50 -25 0 25
V
IN
=6.0V C
IN
=1µF
C
OUT
=2.2µF
10050 75
200
150
100
50
0
R1122N
15
7) Ripple Rejection vs. Frequency
R1122N151A/B R1122N201A/B
Ripple Rejection RR (dB)
Frequency Freq (kHz)
0.1 1
V
IN
=2.5V+0.5Vp-p
C
OUT
=2.2µF I
OUT
=30mA
10010
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
Ripple Rejection RR (dB)
Frequency Freq (kHz)
0.1 1
V
IN
=3.0V+0.5Vp-p
C
OUT
=2.2µF I
OUT
=30mA
10010
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
R1122N301A/B R1122N401A/B
Ripple Rejection RR (dB)
Frequency Freq (kHz)
0.1 1
V
IN
=4.0V+0.5Vp-p
C
OUT
=2.2µF I
OUT
=30mA
10010
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
Ripple Rejection RR (dB)
Frequency Freq (kHz)
0.1 1
V
IN
=5.0V+0.5Vp-p
C
OUT
=2.2µF I
OUT
=30mA
10010
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
R1122N501A/B
Ripple Rejection RR (dB)
Frequency Freq (kHz)
0.1 1
V
IN
=6.0V+0.5Vp-p
C
OUT
=2.2µF I
OUT
=30mA
10010
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
R1122N
16
8) Ripple Rejection vs. Input Voltage (DC bias)
R1122N301B R1122N301B
Ripple Rejection RR (dB)
Input Voltage V
IN
(V)
3.10 3.20 3.30 3.40
C
OUT
=Ceramic 2.2µF
I
OUT
=1mA
3.50
90.00
f=400Hz
f=1kHz
f=10kHz
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
Ripple Rejection RR (dB)
Input Voltage V
IN
(V)
3.10 3.20 3.30 3.40
C
OUT
=Ceramic 2.2µF
I
OUT
=10mA
3.50
90.00
f=400Hz
f=1kHz
f=10kHz
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
R1122N301B
Ripple Rejection RR (dB)
Input Voltage V
IN
(V)
3.10 3.20 3.30 3.40
C
OUT
=Ceramic 2.2µF
I
OUT
=50mA
3.50
90.00
f=400Hz
f=1kHz
f=10kHz
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
9) Input Transient Response
R1122N151B 4 * °
24$*2↔)$*2
4)/!0
4""
4$µ@
9&4*µ
2→
1→
Ch1 1.00V Ch2Ch1 20.0mV M20.0µs
VIN
VOUT
Tek Run : 2.50MS/s Average
R1122N
17
R1122N201B 4 * °
24)$/2↔D$/2
4)/!0
4""
4$µ@
9&4*µ
R1122N301B 4 * °
24D$/2↔*$/2
4)/!0
4""
4$µ@
9&4*µ
R1122N401B 4 * °
24*$/2↔I$/2
4)/!0
4""
4$µ@
9&4*µ
2→
1→
1.00V Ch2Ch1 20.0mV M20.0µs
VIN
VOUT
Tek Run : 2.50MS/s Average
2→
1→
1.00V Ch2Ch1 20.0mV M20.0µs
VIN
VOUT
Tek Run : 2.50MS/s Average
2→
1→
1.00V Ch2Ch1 20.0mV M20.0µs
VIN
VOUT
Tek Run : 2.50MS/s Average
R1122N
18
R1122N501B 4 * °
24I$/2↔E$/2
4)/!0
4""
4$µ@
9&4*µ
10) Load Transient Response
R1122N151B 4 * °
4*/!0↔//!0
24$*2
4$µ@
4$µ@
9&4*µ
R1122N201B 4 * °
4*/!0↔//!0
24)$/2
4$µ@
4$µ@
9&4*µ
2→
1→
1.00V Ch2Ch1 20.0mV M20.0µs
VIN
VOUT
Tek Run : 2.50MS/s Average
2→
1→
500mV Ch2Ch1 50.0mV M20.0µs
IOUT
VOUT
Tek Run : 2.50MS/s Average
2→
1→
500mV Ch2Ch1 50.0mV M20.0µs
I
OUT
V
OUT
Tek Run : 2.50MS/s Average
R1122N
19
R1122N301B 4 * °
4*/!0↔//!0
24D$/2
4$µ@
4$µ@
9&4*µ
R1122N401B 4 * °
4*/!0↔//!0
24*$/2
4$µ@
4$µ@
9&4*µ
R1122N501B 4 * °
4*/!0↔//!0
24I$/2
4$µ@
4$µ@
9&4*µ
2→
1→
500mV Ch2Ch1 50.0mV M20.0µs
IOUT
VOUT
Tek Run : 2.50MS/s Average
2→
1→
500mV Ch2Ch1 50.0mV M20.0µs
IOUT
VOUT
Tek Run : 2.50MS/s Average
2→
1→
500mV Ch2Ch1 50.0mV M20.0µs
IOUT
VOUT
Tek Run : 2.50MS/s Average
R1122N
20
TECHNICAL NOTES
Ceramic
Cap.
Ceramic
Cap.
Spectrum
Analyzer
I
OUT
V
DD
GND
V
OUT1
CE
R1122Nxx1B
ESR
4
S.A
3
1
2
V
IN
Measuring Circuit for white noise; R1122Nxx1B
""+","%&"$""
"""D/µ2+0$,""$
+"=H""!"""&!"
""!"$7&! "!""
"";7$,
K!"""L
+, 242G2
+, @'""=/5858
+), !=*°
