R1121N18A-TL [RICOH]
Fixed Positive LDO Regulator, 1.8V, 1.4V Dropout, CMOS, PDSO5, MINI, PLASTIC, SOT-23, 5 PIN;
| 型号： | R1121N18A-TL |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Fixed Positive LDO Regulator, 1.8V, 1.4V Dropout, CMOS, PDSO5, MINI, PLASTIC, SOT-23, 5 PIN 光电二极管 输出元件 调节器 |
| 文件： | 总19页 (文件大小：180K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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5(*8/$725
544541#6(5,(6
$33/,&$7,21#0$18$/
NO. EA-058-0006
LOW NOISE 150mA LDO REGULATOR
544541#6(5,(6
OUTLINE
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FEATURES
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APPLICATIONS
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• 3RZHU#VRXUFH#IRU#EDWWHU\0SRZHUHG#HTXLSPHQW1
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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↑
↑ ↑
D
E F
Code
Contents
6HWWLQJ#2XWSXW#9ROWDJH#+9287,#=
D
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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
4
5
6
7
8
2XWSXW#SLQ
*1'
9''
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,QSXW#3LQ
#RU#&(
&(
1&
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ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
9
9,1
,QSXW#9ROWDJH
<
9&(
,QSXW#9ROWDJH#+&(#RU#&(#3LQ, 0316#a#9,1.316
9
9287
3'
2XWSXW#9ROWDJH
0316a#9,1.316
9
3RZHU#'LVVLSDWLRQ
583
P:
2SHUDWLQJ#7HPSHUDWXUH
7RSW
7VWJ
073#a#;8
°&
°&
5DQJH
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088#a#458
3
R1121N
ELECTRICAL CHARACTERISTICS
• R1121NXX1A
7RSW# #58°&
Symbol
Item
2XWSXW#9ROWDJH
Conditions
MIN.
TYP.
MAX.
Unit
9,1# #6HW#9287.49
4P$#≤#,287#≤#63P$
9287
9287
9287
9
×31<;
×4135
UHIHU#WR#WKH#(/(&75,&$/#&+$5$&7(5,67,&6#E\#287387
,287
2XWSXW#&XUUHQW
92/7$*(
9,1# #6HW#9287.49
∆92872∆,287 /RDG#5HJXODWLRQ
45
73
P9
4P$#≤#,287#≤#;3P$
UHIHU#WR#WKH#(/(&75,&$/#&+$5$&7(5,67,&6#E\#287387
9',)
'URSRXW#9ROWDJH
92/7$*(
,66
6XSSO\#&XUUHQW
9,1# #6HW#9287.49
68
:3
µ$
µ$
,VWDQGE\
6XSSO\#&XUUHQW#+6WDQGE\,
9,1# #9&(# #6HW#9287.49
314
413
6HW#9287.3189#≤#9,1#≤#;9
,287# #63P$
∆92872∆9,1 /LQH#5HJXODWLRQ
3138
:3
3153
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9,1# #6HW#9287.49
55
9,1
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,QSXW#9ROWDJH
G%
9
;
2XWSXW#9ROWDJH
,287# #63P$
SSP
∆92872∆7
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073°&#≤#7RSW#≤#;8°&
2°&
,OLP
538
9&(+
9&(/
HQ
6KRUW#&XUUHQW#/LPLW
9287# #39
83
8
P$
0Ω
9
#3XOO0XS#5HVLVWDQFH
#,QSXW#9ROWDJH#´+µ
#,QSXW#9ROWDJH#´/µ
CE
CE
CE
518
418
3
43
9,1
3158
9
2XWSXW#1RLVH
%:# #43+]#a#433N+]
63
µ9UPV
4
R1121N
• R1121NXX1B
7RSW 58°&
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
9,1# #6HW#9287.49
4P$#≤#,287#≤#63P$
9287
9287
9287
2XWSXW#9ROWDJH
9
×31<;
×4135
UHIHU#WR#WKH#(/(&75,&$/#&+$5$&7(5,67,&6#E\#287387
,287
2XWSXW#&XUUHQW
/RDG#5HJXODWLRQ
92/7$*(
9,1# #6HW#9287.49
∆92872∆,287
45
73
09
4P$#≤#,287#≤#;3P$
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9',)
,66
'URSRXW#9ROWDJH
6XSSO\#&XUUHQW
92/7$*(
9,1# #6HW#9287.49
68
:3
µ$
µ$
9,1# #6HW#9287.49
9&(# #*1'
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6XSSO\#&XUUHQW#+6WDQGE\,
314
413
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,287# #63P$
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9
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53'
9&(+
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2XWSXW#1RLVH
9287# #39
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8
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9
518
418
3
43
9,1
3158
9
%:# #43+]#a#433N+]
63
µ9UPV
5
R1121N
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
7RSW# #58°&
Output Current
IOUT (mA)
Conditions
Output Voltage
VOUT (V)
MIN.
433
418#≤#9287#≤#41:
41;#≤#9287#≤#813
9,1#0#9287# #4139
483
7RSW# #58°&
Dropout Voltage
Output Voltage
VOUT (V)
VDIF (V)
MIN.
318
Conditions
TYP.
MAX.
418
419
317
41:
316
41;#≤#9287#≤#41<
513#≤#9287#≤#517
518#≤#9287#≤#51:
51;#≤#9287#≤#616
617#≤#9287#≤#813
3193
3168
3157
3153
314:
4173
31:3
3168
3163
3159
,287# #433P$
1RWH#=:KHQ#VHW#2XWSXW#9ROWDJH#LV#HTXDO#RU#OHVV#WKDQ#5139/#9,1#VKRXOG
EH#HTXDO#RU#PRUH#WKDQ#51391
6
R1121N
OPERATION
R1121NXX1A
R1121NXX1B
3
1
3
1
V
DD
V
OUT
V
DD
V
OUT
R1
R1
R2
Vref
Vref
R2
Current Limit
Current Limit
CE
GND
CE
4
GND
4
2
2
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LV#FRPSDUHG#ZLWK#D#UHIHUHQFH#YROWDJH#E\#(UURU#$PSOLILHU/#VR#WKDW#D#FRQVWDQW#YROWDJH#LV#RXWSXW1
$#FXUUHQW#OLPLW#FLUFXLW#IRU#SURWHFWLRQ#DW#VKRUW#PRGH#DQG#D#FKLS#HQDEOH#FLUFXLW#DUH#LQFOXGHG1
7
R1121N
TEST CIRCUITS
CE
CE
4
4
V
DD
V
OUT
V
DD
V
OUT
IN
OUT
IN
OUT
3
1
3
1
R1121Nxx1B Series
R1121Nxx1B Series
I
OUT
I
SS
2.2µF
2.2µF
2
2
GND
GND
0.1µF
0.1µF
Standard test Circuit
Supply current Test
Circuit
Fig.1 Standard test Circuit
Fig.2 Supply Current Test Circuit
CE
CE
4
4
V
DD
VOUT
V
DD
VOUT
IN
OUT
IN
OUT
1
3
1
3
R1121Nxx1B Series
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
8
R1121N
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1121N181B
R1121N301B
Topt = 25°C
Topt = 25°C
2.0
3.5
3.0
2.5
2.0
1.5
1.0
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)
9
R1121N
R1121N401B
R1121N501B
Topt = 25°C
Topt = 25°C
4.5
5.5
5.0
4.5
4.0
3.5
I
OUT = 1mA
4.0
3.5
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
1.20
0.40
0.35
0.30
0.25
0.20
0.15
0.10
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)
10
R1121N
4) Output Voltage vs. Temperature
R1121N181B
R1121N301B
V
IN = 4.0V
V
IN = 2.8V
I
OUT = 30mA
I
OUT = 30mA
3.10
3.08
3.06
3.04
3.02
3.00
2.98
2.96
2.94
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
2.92
2.90
1.72
1.70
-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
IOUT = 30mA
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.10
4.08
4.06
4.04
4.02
4.00
3.98
3.96
3.94
4.92
4.90
3.92
3.90
-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)
11
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
V
IN = 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
V
IN = 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)
12
R1121N
7) Dropout Voltage vs. Set Output Voltage
R1121N××1B
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
VIN = 2.8VDC + 0.5Vp-p
COUT = tantal 1.0µF
C
OUT = tantal 2.2µF
80
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
I
I
OUT = 1mA
I
OUT= 1mA
OUT = 30mA
I
I
OUT = 30mA
OUT = 50mA
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
VIN = 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
IOUT = 1mA
I
OUT = 1mA
I
OUT = 30mA
OUT = 50mA
IOUT = 30mA
IOUT = 50mA
I
0.1
1
10
100
0.1
1
10
100
Frequency f (kHz)
Frequency f (kHz)
13
R1121N
R1121N401B
R1121N401B
V
IN = 5.0VDC + 0.5Vp-p
V
IN = 5.0VDC + 0.5Vp-p
COUT = tantal 1.0µF
C
OUT = 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
I
OUT = 30mA
OUT = 50mA
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
IOUT = 10mA
I
OUT = 1mA
COUT = 2.2µF
COUT = 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 = 400Hz
f = 1kHz
f = 10kHz
3.4
f = 10kHz
3.1
3.2
3.3
Input Voltage VIN (V)
3.4
3.5
3.1
3.2
3.3
Input Voltage VIN (V)
3.5
R1121N301B
I
OUT = 50mA
COUT = 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
14
R1121N
10) Line Transient Response
R1121N301B
IOUT=30mA
tr=tf=5 µs
COUT=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
COUT=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)
15
R1121N
11) Load Transient Response
R1121N301B
VIN=4V
CIN=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
4
4
4
6
6
6
8
12
14
16
18
20
20
20
Time t (µs)
R1121N301B
V
C
C
IN=4V
IN=Tantalum 1µF
OUT=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
2
8
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
Output Voltage
0
3.1
3.0
-50
-100
-150
2.9
2.8
10
2
8
12
14
16
18
Time t (µs)
16
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 1.0µF
Ceramic 2.2µF
100.0
10.0
100.0
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)
17
R1121N
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WR#ZRUN#FRUUHFWO\1
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TYPICAL APPLICATION
CE
CE
IN
V
DD
VOUT
OUT IN
V
DD
V
OUT
OUT
R1121NXX1A
GND
R1121Nxx1B
GND
Cap.
Cap.
Cap.
Cap.
18
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