R1121N201B-TL-FA [RICOH]
Fixed Positive LDO Regulator, 2V, 0.7V Dropout, CMOS, PDSO5, MINI, SOT-23, 5 PIN;
| 型号： | R1121N201B-TL-FA |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Fixed Positive LDO Regulator, 2V, 0.7V Dropout, CMOS, PDSO5, MINI, SOT-23, 5 PIN 光电二极管 |
| 文件： | 总17页 (文件大小：171K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LOW NOISE 150mA LDO REGULATOR
NO. EA-058-0204
5ꢀꢀꢁꢀ1ꢂ6(5,(6
OUTLINE
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FEATURES
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APPLICATIONS
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1
R1121N
BLOCK DIAGRAM
R1121Nxx1A
R1121Nxx1B
3
1
3
1
V
DD
VOUT
V
DD
VOUT
Vref
Vref
Current Limit
Current Limit
CE
4
GND
2
CE
4
GND
2
SELECTION GUIDE
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↑ ↑ ↑
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Code
Contents
6HWWLQJꢆ2XWSXWꢆ9ROWDJHꢆ.9287/ꢆꢎ
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2
R1121N
PIN CONFIGURATION
SOT-23-5
5
4
NC
CE
(mark side)
GND
VOUT
V
DD
1
2
3
PIN DESCRIPTION
Pin No.
Symbol
9287
Description
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ABSOLUTE MAXIMUM RATINGS
Symbol
9,1
Item
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Rating
Unit
9
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ELECTRICAL CHARACTERISTICS
• R1121Nxx1A
7RSWꢆ ꢆꢁꢅ°&
Symbol
Item
2XWSXWꢆ9ROWDJH
Conditions
Min.
Typ.
Max.
Unit
9,1ꢆ ꢆ6HWꢆ9287ꢓꢀ9
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Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
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• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
7RSWꢆ ꢆꢁꢅ°&
Output Current
IOUT (mA)
Conditions
Output Voltage
VOUT (V)
Min.
ꢀꢄꢄ
ꢀꢂꢅꢆ≤ꢆ9287ꢆ≤ꢆꢀꢂꢊ
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Dropout Voltage
Output Voltage
VOUT (V)
VDIF (V)
Min.
ꢄꢂꢅꢄ
Conditions
Typ.
Max.
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OPERATION
R1121Nxx1A
R1121Nxx1B
3
1
3
1
VDD
VOUT
VDD
VOUT
R1
R1
Vref
Vref
R2
R2
Current Limit
Current Limit
CE
GND
CE
4
GND
4
2
2
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6
R1121N
TEST CIRCUITS
CE
CE
4
4
V
DD
VOUT
IN
OUT
V
DD
VOUT
3
1
R1121Nxx1B Series
IN
OUT
3
1
R1121Nxx1B Series
ISS
I
OUT
2.2µF
2
2.2µF
2
GND
0.1µF
GND
0.1µF
Supply current Test
Circuit
Standard test Circuit
Fig.1 Standard test Circuit
Fig.2 Supply Current Test Circuit
CE
CE
4
4
V
DD
VOUT
IN
OUT
V
DD
VOUT
3
1
R1121Nxx1B Series
IN
OUT
3
1
R1121Nxx1B Series
I
OUT
P. G
2
2
GND
GND
1µF
I1 I2
Ripple Rejection, Line
Transient Response
Test Circuit
Load Transient Response
Test Circuit
Fig.3 Ripple Rejection, Line Transient Response
Test Circuit
Fig.4 Load Transient Response Test Circuit
7
R1121N
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1121N181B
R1121N301B
Topt = 25°C
Topt = 25°C
3.5
3.0
2.5
2.0
1.5
1.0
2.0
5.0V
1.8
4.0V
3.8V
1.6
1.4
1.2
1.0
0.8
0.6
0.4
2.8V
2.3V
3.5V
VIN = 3.3V
VIN = 2.1V
0.5
0.0
0.2
0.0
0
100
200
300
400
500
0
100
200
300
400
500
Output Current IOUT (mA)
Output Current IOUT (mA)
R1121N401B
R1121N501B
Topt = 25°C
Topt = 25°C
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
6.0
5.0
4.0
3.0
7.0V
6.0V
5.0V
4.5V
6.0V
5.5V
V
IN = 4.3V
2.0
1.0
0.0
V
IN = 5.3V
0.5
0.0
0
100
200
300
400
500
0
100
200
300
400
500
Output Current IOUT (mA)
Output Current IOUT (mA)
2) Output Voltage vs. Input Voltage
R1121N181B
R1121N301B
Topt = 25°C
Topt = 25°C
3.1
3.0
2.9
2.8
2.0
1.9
I
OUT=1mA
I
OUT = 1mA
1.8
1.7
1.6
1.5
1.4
2.7
2.6
2.5
30mA
30mA
1.3
1.2
50mA
2.0 3.0
Input Voltage VIN (V)
50mA
3.0
2.0
4.0
5.0
6.0
7.0
8.0
1.0
4.0
5.0
6.0
7.0
8.0
Input Voltage VIN (V)
8
R1121N
R1121N401B
R1121N501B
Topt = 25°C
Topt = 25°C
4.5
4.0
3.5
5.5
5.0
4.5
4.0
3.5
I
OUT = 1mA
I
OUT = 1mA
30mA
3.0
2.5
30mA
50mA
4.0
3.0
2.5
50mA
3.0
2.0
4.0
5.0
6.0
7.0
8.0
2.0
3.0
5.0
6.0
7.0
8.0
Input Voltage VIN (V)
Input Voltage VIN (V)
3) Dropout Voltage vs. Output Current
R1121N181B
R1121N301B
0.40
0.35
0.30
0.25
0.20
0.15
0.10
1.20
1.00
Topt = 85°C
Topt = 85°C
25°C
0.80
0.60
0.40
25°C
-40°C
-40°C
0.20
0.00
0.05
0.00
0
50
100
150
0
50
100
150
Output Current IOUT (mA)
Output Current IOUT (mA)
R1121N401B
R1121N501B
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.40
0.35
0.30
0.25
0.20
0.15
0.10
Topt = 85°C
Topt = 85°C
25°C
25°C
-40°C
-40°C
0.05
0.00
0.05
0.00
0
50
100
150
0
50
100
150
Output Current IOUT (mA)
Output Current IOUT (mA)
9
R1121N
4) Output Voltage vs. Temperature
R1121N181B
R1121N301B
VIN = 2.8V
IOUT = 30mA
VIN = 4.0V
IOUT = 30mA
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
3.10
3.08
3.06
3.04
3.02
3.00
2.98
2.96
2.94
1.72
1.70
2.92
2.90
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt (°C)
Temperature Topt (°C)
R1121N401B
R1121N501B
V
IN = 5.0V
V
IN = 6.0V
I
OUT = 30mA
I
OUT = 30mA
4.10
4.08
4.06
4.04
4.02
4.00
3.98
3.96
3.94
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
3.92
3.90
4.92
4.90
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Tempareture Topt (°C)
Temperature Topt (°C)
5) Supply Current vs. Input Voltage
R1121N181B
R1121N301B
Topt = 25°C
Topt = 25°C
60
50
40
30
60
50
40
30
20
10
0
20
10
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
Input Voltage VIN (V)
Input Voltage VIN (V)
10
R1121N
R1121N401B
R1121N501B
Topt = 25°C
Topt = 25°C
60
50
40
30
20
60
50
40
30
20
10
0
10
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
Input Voltage VIN (V)
Input Voltage VIN (V)
6) Supply Current vs. Temperature
R1121N181B
R1121N301B
VIN = 2.8V
V
IN = 4.0V
50
45
40
35
30
50
45
40
35
30
25
20
25
20
-50
0
50
100
-50
0
50
100
Temperature Topt (°C)
Temperature Topt (°C)
R1121N401B
R1121N501B
VIN = 5.0V
V
IN = 6.0V
50
50
45
40
35
30
45
40
35
30
25
20
25
20
-50
0
50
100
-50
0
50
100
Temperature Topt (°C)
Temperature Topt (°C)
11
R1121N
7) Dropout Voltage vs. Set Output Voltage
R1121Nxx1B
Topt = 25°C
1.0
0.9
IOUT = 150mA
IOUT = 100mA
IOUT = 50mA
IOUT = 30mA
IOUT = 10mA
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.0
2.0
3.0
4.0
5.0
Set Output Voltage Vreg (V)
8) Ripple Rejection vs. Frequency
R1121N181B
R1121N181B
V
IN = 2.8VDC + 0.5Vp-p
V
IN = 2.8VDC + 0.5Vp-p
C
OUT = tantal 2.2µF
C
OUT = tantal 1.0µF
80
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
I
OUT= 1mA
I
I
OUT = 1mA
I
I
OUT = 30mA
OUT = 50mA
OUT = 30mA
I
OUT = 50mA
0.1
1
10
100
0.1
1
10
100
Frequency f (kHz)
Frequency f (kHz)
R1121N301B
R1121N301B
V
IN = 4.0VDC + 0.5Vp-p
V
IN = 4.0VDC + 0.5Vp-p
COUT = tantal 2.2µF
COUT = tantal 1.0µF
80
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
I
I
I
OUT = 1mA
I
OUT = 1mA
OUT = 30mA
OUT = 50mA
I
OUT = 30mA
OUT = 50mA
I
0.1
1
10
100
0.1
1
10
100
Frequency f (kHz)
Frequency f (kHz)
12
R1121N
R1121N401B
R1121N401B
V
IN = 5.0VDC + 0.5Vp-p
V
IN = 5.0VDC + 0.5Vp-p
COUT = tantal 1.0µF
COUT = tantal 2.2µF
80
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
I
I
I
OUT = 1mA
OUT = 30mA
OUT = 50mA
I
OUT= 1mA
I
OUT = 30mA
OUT = 50mA
I
0.1
1
10
100
0.1
1
10
100
Frequency f (kHz)
Frequency f (kHz)
9) Ripple Rejection vs. Input Voltage (DC bias)
R1121N301B
R1121N301B
I
OUT = 10mA
I
C
OUT = 1mA
OUT = 2.2µF
C
OUT = 2.2µF
80
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
f = 400Hz
f = 1kHz
f = 10kHz
3.4
f = 400Hz
f = 1kHz
f = 10kHz
3.1
3.2
3.3
Input Voltage VIN (V)
3.5
3.1
3.2
3.3
Input Voltage VIN (V)
3.4
3.5
R1121N301B
I
OUT = 50mA
C
OUT = 2.2µF
80
f = 400Hz
f = 1kHz
70
60
50
40
30
20
10
0
f = 10kHz
3.1
3.2
3.3
Input Voltage VIN (V)
3.4
3.5
13
R1121N
10) Line Transient Response
R1121N301B
I
OUT=30mA
tr=tf=5 µs
C
OUT=Tantalum 1.0µF
3.4
3.3
3.2
6
5
4
Input Voltage
3
2
1
0
3.1
3.0
Output Voltage
2.9
2.8
0
20
40
60
80
100
120
TIme t (µs)
R1121N301B
I
OUT=30mA
tr=tf=5 µs
C
OUT=Tantalum 2.2µF
3.4
3.3
3.2
6
5
4
Input Voltage
3
2
1
0
3.1
3.0
Output Voltage
2.9
2.8
0
20
40
60
80
100
120
Time t (µs)
R1121N301B
I
OUT=30mA
tr=tf=5 µs
OUT=Tantalum 6.8µF
C
3.4
3.3
3.2
6
5
4
3
2
1
0
Input Voltage
3.1
3.0
Output Voltage
2.9
2.8
0
20
40
60
80
100
120
Time t (µs)
14
R1121N
11) Load Transient Response
R1121N301B
VIN=4V
C
IN=Tantalum 1µF
COUT=Tantalum 1.0µF
3.4
3.3
3.2
150
100
50
Output Current
Output Voltage
0
3.1
3.0
-50
-100
-150
2.9
2.8
10
0
0
0
2
2
2
4
4
4
6
6
6
8
8
8
12
14
16
18
20
20
20
Time t (µs)
R1121N301B
VIN=4V
CIN=Tantalum 1µF
COUT=Tantalum 2.2µF
3.4
3.3
3.2
150
100
50
Output Current
Output Voltage
0
3.1
3.0
-50
-100
-150
2.9
2.8
10
12
14
16
18
Time t (µs)
R1121N301B
V
C
C
IN=4V
IN=Tantalum 1µF
OUT=Tantalum 6.8µF
3.4
3.3
3.2
150
100
50
Output Current
0
3.1
3.0
Output Voltage
-50
-100
-150
2.9
2.8
10
12
14
16
18
Time t (µs)
15
R1121N
TECHNICAL NOTES
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CE
4
3
1
Vout
R1121N301B
Vin
Ceramic
Capacitor
Spectrum
Analyzer
S.A.
ESR
GND
2
Vin
Iout
Ceramic Capacitor
1µF
Measuring Circuit for white noise ; R1121N301B
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R1121N301B
R1121N301B
Ceramic 2.2µF
Ceramic 1.0µF
100.0
100.0
10.0
10.0
1.0
1.0
0.1
0.1
0
50
100
150
0
50
100
150
Output Current IOUT (mA)
Output Current IOUT (mA)
16
R1121N
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SRVVLEOHꢂ
TYPICAL APPLICATION
CE
CE
IN
V
DD
V
OUT
OUT IN
V
DD
V
OUT
OUT
R1121Nxx1A
GND
R1121Nxx1B
GND
Cap.
Cap.
Cap.
Cap.
17
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