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LOW NOISE 150mA LDO REGULATOR
51 6(5,(6
NO. EA-060-0204
OUTLINE
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FEATURES
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APPLICATIONS
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1
R1122N
BLOCK DIAGRAM
R1122Nxx1A
3 VOUT _ + Vref CE 4 Current Limit 2 GND CE 4 Vref Current Limit 2 GND VDD _ +
R1122Nxx1B
1 VOUT
3 VDD
1
SELECTION GUIDE
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2
R1122N
PIN CONFIGURATION
SOT-23-5
5 4
NC (mark side) VOUT GND
CE
VDD
1
2
3
PIN DESCRIPTION
Pin No. Symbol 9287 *1' 9''
RU &(
Description 2XWSXW SLQ *URXQG 3LQ ,QSXW 3LQ &KLS (QDEOH 3LQ 1R &RQQHFWLRQ
1&
ABSOLUTE MAXIMUM RATINGS
Symbol 9,1 9&( 9287 ,287 3' 7RSW 7VWJ ,QSXW 9ROWDJH ,QSXW 9ROWDJH &( RU &( 3LQ 2XWSXW 9ROWDJH 2XWSXW &XUUHQW 3RZHU 'LVVLSDWLRQ 2SHUDWLQJ 7HPSHUDWXUH 5DQJH 6WRUDJH 7HPSHUDWXUH 5DQJH Item Rating a 9,1 a 9,1 a a Unit 9 9 9 P$ P: & &
3
R1122N
ELECTRICAL CHARACTERISTICS
* R1122Nxx1A Symbol 9287 ,287 Item 2XWSXW 9ROWDJH 2XWSXW &XUUHQW 9,1 9,1 9,1 Conditions 6HW 9287 9 6HW 9287 9 6HW 92879 6HW 9287 9 P$ ,287 P$ :KHQ 9287 Min. 9287 x Typ. 7RSW Max. 9287 x & Unit 9 P$ P9
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3XOOXS 5HVLVWDQFH ,QSXW 9ROWDJH +
P$ ,287 P$ $*( 9,1 9,1 ,287 I 9,1 6HW 9287 9 9&( P$ N+] 5LSSOH 9SS 6HW 9287 9 ,287 9287 P$ 9 %: +] a N+] & 7RSW & 6HW 9287 9
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6HW 9287 9 9,1 9
,QSXW 9ROWDJH / 2XWSXW 1RLVH
4
R1122N
* R1122Nxx1B Symbol 9287 ,287 Item 2XWSXW 9ROWDJH 2XWSXW &XUUHQW 9,1 9,1 9,1 Conditions 6HW 9287 9 6HW 9287 9 6HW 92879 6HW 9287 9 P$ ,287 P$ :KHQ 9287 Min. 9287 x Typ. Max. 9287 x
7RSW & Unit 9 P$ P9
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5
R1122N
* ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE 7RSW Dropout Voltage Output Voltage VOUT (V) 9287 9287 9287 9287 9287 ,287 P$ VDIF (V) Conditions Typ. Max. &
OPERATION
R1122xx1A R1122xx1B
3 VDD _ + Vref CE 4 Current Limit
1 VOUT
VDD
3
1 VOUT _
R1
Vref
+
R1
R2 2
GND
CE 4
Current Limit
R2 GND 2
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6
R1122N
TEST CIRCUITS
CE CE
4
VOUT R1122Nxx1B Series
4
VOUT R1122Nxx1B Series
IN
VDD
OUT IOUT
IN ISS
VDD
OUT
3
1
3
1
2 2.2F
GND
2 2.2F
GND
Fig.1 Standard test Circuit
CE
Fig.2 Supply Current Test Circuit
CE
4
VOUT R1122Nxx1B Series
4
VOUT R1122Nxx1B Series
IN
VDD
OUT IOUT
IN
VDD
OUT IOUT
3
1
3
1
P.G
2
GND
2 2.2F
GND I1 I2
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
Fig.4 Load Transient Response Test Circuit
7
R1122N
TECHNICAL NOTES
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TYPICAL APPLICATION
CE R1122Nxx1A Series CE R1122Nxx1B Series
IN + Cap.
VDD
VOUT +
OUT
IN + Cap.
VDD
VOUT +
OUT
GND
Cap.
GND
Cap.
([WHUQDO &RPSRQHQWV 2XWSXW &DSDFLWRU &HUDPLF ) 6HW RXWSXW YROWDJH LQ WKH UDQJH IURP WR 9 &HUDPLF ) 6HW RXWSXW YROWDJH LQ WKH UDQJH IURP WR 9 ,QSXW &DSDFLWRU &HUDPLF )
8
R1122N
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current R1122N151B
1.8 1.6
Output Voltage VOUT(V)
R1122N201B
2.5 2
VIN=2.3V
Output Voltage VOUT(V)
1.4 1.2 1 0.8 0.6 0.4 0.2 0 0 100 200 300 400 500 Output Current IOUT(mA)
VIN=2.0V VIN=2.5V VIN=3.5V
1.5 1 0.5 0 0
VIN=2.5V VIN=3.0V VIN=4.0V
100
200
300
400
500
Output Current IOUT(mA)
R1122N301B
3.5
Output Voltage VOUT(V)
R1122N401B
5
3
Output Voltage VOUT(V)
4
VIN=4.3V
2.5
VIN=3.3V
2 1.5 1 0.5 0 0
VIN=3.5V VIN=4.0V VIN=5.0V
3 2 1 0
VIN=4.5V VIN=5.0V VIN=6.0V
100
200
300
400
500
0
100
200
300
400
500
Output Current IOUT(mA)
Output Current IOUT(mA)
R1122N501B
6
Output Voltage VOUT(V)
5 4 3 2 1 0 0 100 200 300 400 500 Output Current IOUT(mA)
VIN=5.3V VIN=5.5V VIN=6.0V VIN=7.0V
9
R1122N
2)
Output Voltage vs. Input Voltage R1122N151B
1.600
Output Voltage VOUT(V)
R1122N201B
2.100
Output Voltage VOUT(V)
1.500 1.400 1.300 1.200 1.100 1.000 1 2 3 4 5 6 7 Input Voltage VIN(V)
IOUT=1mA IOUT=30mA IOUT=50mA
2.000 1.900 1.800 1.700 1.600 1.500 1 2 3 4 5 6 7 Input Voltage VIN(V)
IOUT=1mA IOUT=30mA IOUT=50mA
R1122N301B
3.100 4.500 3.000 2.900 2.800 2.700 2.600 2.500 2 3 4 5 6 7 Input Voltage VIN(V)
IOUT=1mA IOUT=30mA IOUT=50mA
R1122N401B
Output Voltage VOUT(V)
Output Voltage VOUT(V)
4.000
3.500
3.000
IOUT=1mA IOUT=30mA IOUT=50mA
2.500 2 3 4 5 6 7 Input Voltage VIN(V)
R1122N501B
5.500 5.000 4.500 4.000 3.500 3.000 2.500 2 3 4 5 6 7 Input Voltage VIN(V)
IOUT=1mA IOUT=30mA IOUT=50mA
10
Output Voltage VOUT(V)
R1122N
3)
Dropout Voltage vs. Output Current R1122N151B
0.600
Dropout Voltage VDIF(V)
R1122N201B
0.600 0.500 0.400 0.300 0.200 0.100 0.000
Topt=-40C Topt=25C Topt=85C
0.400 0.300 0.200 0.100 0.000 0
50
100
150
Dropout Voltage VDIF(V)
0.500
Topt=-40C Topt=25C Topt=85C
0
50
100
150
Output Current IOUT(mA)
Output Current IOUT(mA)
R1122N301B
0.600
Dropout Voltage VDIF(V)
R1122N401B
0.600 0.500 0.400 0.300 0.200 0.100 0.000
Topt=-40C Topt=25C Topt=85C
0.400 0.300 0.200 0.100 0.000 0
50
100
150
Dropout Voltage VDIF(V)
0.500
Topt=-40C Topt=25C Topt=85C
0
50
100
150
Output Current IOUT(mA)
Output Current IOUT(mA)
R1122N501B
0.600 0.500 0.400 0.300 0.200 0.100 0.000 0 50 100 150 Output Current IOUT(mA)
Topt=-40C Topt=25C Topt=85C
Dropout Voltage VDIF(V)
11
R1122N
4)
Output Voltage vs. Temperature R1122N151A/B
VIN=2.5V CIN=1F COUT=2.2F IOUT=30mA 1.53 1.52
Output VoltageVOUT(V)
R1122N201B
VIN=3.0V CIN=1F COUT=2.2F IOUT=30mA 2.10 2.08 2.06 2.04 2.02 2.00 1.98 1.96 1.94 1.92 1.90
Output VoltageVOUT(V)
1.51 1.50 1.49 1.48 1.47 -50 -25 50 Temperature Topt (C) 0 25 75 100
-50
-25
0 25 50 Temperature Topt (C)
75
100
R1122N301A/B
VIN=4.0V CIN=1F COUT=2.2F IOUT=30mA 3.06 3.04 3.02 3.00 2.98 2.96 2.94 -50 -25 50 Temperature Topt (C) 0 25 75 100 4.08 4.06
Output VoltageVOUT(V)
R1122N401A/B
VIN=5.0V CIN=1F COUT=2.2F IOUT=30mA
Output VoltageVOUT(V)
4.04 4.02 4.00 3.98 3.96 3.94 3.92 -50 -25 0 25 50 Temperature Topt (C) 75 100
R1122N501A/B
VIN=6.0V CIN=1F COUT=2.2F IOUT=30mA 5.10 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 -50 -25 0 25 50 Temperature Topt (C) 75 100
12
Output VoltageVOUT(V)
R1122N
5)
Supply Current vs. Input Voltage R1122N151B
120 120
R1122N201B
Supply Current ISS (A)
100 80 60 40 20 0
Supply Current ISS (A)
100 80 60 40 20 0 1 2 3 4 5 Input Voltage VIN (V) 6 7
1
2
3 4 5 Input Voltage VIN (V)
6
7
R1122N301B
120 120
R1122N401B
Supply Current ISS (A)
100 80 60 40 20 0
Supply Current ISS (A)
100 80 60 40 20 0 1 2 3 4 5 Input Voltage VIN (V) 6 7
1
2
3 4 5 Input Voltage VIN (V)
6
7
R1122N501B
120
Supply Current ISS (A)
100 80 60 40 20 0 1 2 3 4 5 Input Voltage VIN (V) 6 7
13
R1122N
6)
Supply Current vs. Temperature R1122N151A/B
200 VIN=2.5V CIN=1F COUT=2.2F 200
R1122N201A/B
VIN=3.0V CIN=1F COUT=2.2F
Supply Current ISS (A)
150
Supply Current ISS (A)
-25 50 75 0 25 Temperature Topt (C) 100
150
100
100
50
50
0 -50
0 -50
-25
0 25 50 75 Temperature Topt (C)
100
R1122N301A/B
200 VIN=4.0V CIN=1F COUT=2.2F 200
R1122N401A/B
VIN=5.0V CIN=1F COUT=2.2F
Supply Current ISS (A)
150
Supply Current ISS (A)
50 75 0 25 Temperature Topt (C) 100
150
100
100
50
50
0 -50
-25
0 -50
-25
50 75 0 25 Temperature Topt (C)
100
R1122N501A/B
200 VIN=6.0V CIN=1F COUT=2.2F
Supply Current ISS (A)
150
100
50
0 -50
-25
50 75 0 25 Temperature Topt (C)
100
14
R1122N
7)
Ripple Rejection vs. Frequency R1122N151A/B
90.00
Ripple Rejection RR (dB)
R1122N201A/B
90.00
Ripple Rejection RR (dB)
VIN=2.5V+0.5Vp-p COUT=2.2F IOUT=30mA
VIN=3.0V+0.5Vp-p COUT=2.2F IOUT=30mA
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
R1122N301A/B
90.00
Ripple Rejection RR (dB)
R1122N401A/B
90.00
Ripple Rejection RR (dB)
VIN=4.0V+0.5Vp-p COUT=2.2F IOUT=30mA
VIN=5.0V+0.5Vp-p COUT=2.2F IOUT=30mA
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
R1122N501A/B
90.00
Ripple Rejection RR (dB)
VIN=6.0V+0.5Vp-p COUT=2.2F IOUT=30mA
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
15
R1122N
8)
Ripple Rejection vs. Input Voltage (DC bias) R1122N301B
90.00 COUT=Ceramic 2.2F IOUT=1mA 90.00
R1122N301B
COUT=Ceramic 2.2F IOUT=10mA
Ripple Rejection RR (dB)
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 3.10
f=400Hz f=1kHz f=10kHz
Ripple Rejection RR (dB)
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 3.10
f=400Hz f=1kHz f=10kHz
3.20 3.30 3.40 Input Voltage VIN (V)
3.50
3.20 3.30 3.40 Input Voltage VIN (V)
3.50
R1122N301B
90.00 COUT=Ceramic 2.2F IOUT=50mA
Ripple Rejection RR (dB)
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 3.10
f=400Hz f=1kHz f=10kHz
3.20 3.30 3.40 Input Voltage VIN (V)
3.50
9)
Input Transient Response R1122N151B
Tek Run : 2.50MS/s Average
7RSW &
VIN
1
2
VOUT
9,1 99 ,287 P$ &,1 QRQH &287 )
Ch1 Ch1
1.00V
Ch2 20.0mV
M20.0s
WUWI V
16
R1122N
R1122N201B
Tek Run : 2.50MS/s Average
7RSW &
VIN
1
2
VOUT
9,1 99 ,287 P$ &,1 QRQH &287 )
Ch1
1.00V
Ch2 20.0mV
M20.0s
WUWI V 7RSW &
R1122N301B
Tek Run : 2.50MS/s Average
VIN
1
2
VOUT
9,1 99 ,287 P$ &,1 QRQH &287 )
Ch1
1.00V
Ch2 20.0mV
M20.0s
WUWI V 7RSW &
R1122N401B
Tek Run : 2.50MS/s Average
VIN
1
2
VOUT
9,1 99 ,287 P$ &,1 QRQH &287 )
Ch1
1.00V
Ch2 20.0mV
M20.0s
WUWI V
17
R1122N
R1122N501B
Tek Run : 2.50MS/s Average
7RSW &
VIN
1
2
VOUT
9,1 99 ,287 P$ &,1 QRQH &287 )
Ch1
1.00V
Ch2 20.0mV
M20.0s
WUWI V
10) Load Transient Response R1122N151B
Tek Run : 2.50MS/s Average
7RSW &
1
IOUT
VOUT 2
,287 P$P$ 9,1 9 &,1 ) &287 )
Ch1 500mV
Ch2 50.0mV
M20.0s
WUWI V 7RSW &
R1122N201B
Tek Run : 2.50MS/s Average
1
IOUT
VOUT 2
,287 P$P$ 9,1 9 &,1 ) &287 )
Ch1 500mV
Ch2 50.0mV
M20.0s
WUWI V
18
R1122N
R1122N301B
Tek Run : 2.50MS/s Average
7RSW &
1
IOUT
VOUT 2
,287 P$P$ 9,1 9 &,1 ) &287 )
Ch1 500mV
Ch2 50.0mV
M20.0s
WUWI V 7RSW &
R1122N401B
Tek Run : 2.50MS/s Average
1
IOUT
VOUT 2
,287 P$P$ 9,1 9 &,1 ) &287 )
Ch1 500mV
Ch2 50.0mV
M20.0s
WUWI V 7RSW &
R1122N501B
Tek Run : 2.50MS/s Average
1
IOUT
,287 P$P$
VOUT 2
9,1 9 &,1 ) &287 ) WUWI V
Ch1 500mV
Ch2 50.0mV
M20.0s
19
R1122N
TECHNICAL NOTES
4 CE VOUT1 1
Ceramic Cap. Spectrum Analyzer
R1122Nxx1B 3 VDD 2 GND
ESR IOUT
S.A
Ceramic
VIN Cap.
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