RICOH R1121N

LOW NOISE 150mA LDO REGULATOR
NO. EA-058-0204
OUTLINE
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FEATURES
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1
R1121N
BLOCK DIAGRAM
R1121Nxx1A
R1121Nxx1B
3
1
3
VOUT
VDD
VDD
Vref
VOUT
Vref
Current Limit
CE
1
GND
4
2
CE
Current Limit
4
GND
2
SELECTION GUIDE
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Code
Contents
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R1121N
PIN CONFIGURATION
SOT-23-5
5
4
NC
CE
(mark side)
VOUT
GND
VDD
1
2
3
PIN DESCRIPTION
Pin No.
Symbol
Description
4
# #(
A3
A (:(
-
4
!(# :(
C
#(:(
((
(
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
D
4
4
!(# 4
4
!(# 4.:(/
-E4F-
4
4
# 4
-E4F-
4
!
# (
'2
:
:"3#(
'G
CEH
°
E
°
#
#('# (
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3
R1121N
ELECTRICAL CHARACTERISTICS
• R1121Nxx1A
#5°
Symbol
Conditions
Min.
Typ.
Max.
454F4
4
4
'2≤!≤-'2
×DH
×
Unit
4
4
# 4
!
# (
∆4∆!
1 (
4
3# 4
!
##$ (
454F4
-
7
µ2
##$ (.($/
45454F4
µ2
94
!($
∆4∆4
1( (
##)
(
4
!(# 4
*1!21622!!$0:0
412A
454F4
'2≤!≤H'2
4F4≤4≤H4
!5-'2
*5,68%##4##
7
454F4
'# **
(
C°≤#≤H°
!'
(1'
454
CE : #(
4
CE !(# 4>6?
4
CE !(# 4>1?
# '4
412A
!5-'2
(
C
*1!21622!!$0:0
# 4
∆4∆
4
Item
;G568E,68
;
H
##'
±
°
4
'2
Ω
4
4
4
-
µ4'
R1121N
• R1121Nxx1B
#5°
Symbol
Item
4
# 4
!
# (
∆4∆!
1 (
4
3# 4
!
##$ (
!($
##$ (.($/
∆4∆4
1( (
##)
(
4
!(# 4
∆4∆
# 4
'# **
(
Conditions
Min.
Typ.
Max.
454F4
4
4
'2≤!≤-'2
×DH
×
Unit
4
*1!21622!!$0:0
412A
454F4
'2≤!≤H'2
C
'4
*1!21622!!$0:0
412A
454F4
454F4
45A3
4F4≤4≤H4
!5-'2
*5,68%##4##
-
7
µ2
µ2
94
7
454F4
!5-'2
H
!'
(1'
454
: "((
4
!(# 4>6?
4
!(# 4>1?
(
# °
4
##'
±
C°≤#≤H°
;G568E,68
;
'2
Ω
4
4
4
-
µ4'
5
R1121N
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
#5°
Output Current
Output Voltage
VOUT (V)
IOUT (mA)
Conditions
≤4≤7
Min.
4454
H≤4≤
#5°
Dropout Voltage
Output Voltage
VOUT (V)
VDIF (V)
Conditions
Min.
Typ.
Max.
I
C
-
7
≤4≤7
C
-
H≤4≤--
-
-C≤4≤
7
I
I
C
7
-
H≤4≤D
≤4≤C
!5'2
=G( # 4+ (4%4! + '(4
OPERATION
R1121Nxx1A
3
R1121Nxx1B
1
VDD
3
VOUT
1
VDD
VOUT
R1
R1
Vref
CE
4
Vref
Current Limit
R2
GND
2
CE
Current Limit
4
R2
GND
2
!(!%* (* # %4
$*
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6
R1121N
TEST CIRCUITS
CE
CE
4
4
IN
VDD
3
VOUT
R1121Nxx1B Series
1
VDD
3
IN
OUT
VOUT
R1121Nxx1B Series
OUT
1
ISS
IOUT
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
IN
VDD
3
VOUT
R1121Nxx1B Series
1
OUT
IN
IOUT
P.G
VDD
3
VOUT
R1121Nxx1B Series
OUT
1
2
2
GND
1µF
Ripple Rejection, Line
Transient Response
Test Circuit
Fig.3 Ripple Rejection, Line Transient Response
GND
I1
I2
Load Transient Response
Test Circuit
Fig.4 Load Transient Response Test Circuit
Test Circuit
7
R1121N
TYPICAL CHARACTERISTICS
1)
Output Voltage vs. Output Current
R1121N181B
R1121N301B
Topt = 25°C
Topt = 25°C
3.5
2.0
5.0V
3.0
3.8V
1.6
Output Voltage VOUT (V)
Output Voltage VOUT (V)
1.8
2.8V
1.4
1.2
2.3V
1.0
0.8
0.6
VIN = 2.1V
0.4
4.0V
2.5
2.0
3.5V
1.5
VIN = 3.3V
1.0
0.5
0.2
0.0
0.0
0
100
200
300
400
Output Current IOUT (mA)
500
0
100
R1121N401B
200
300
400
Output Current IOUT (mA)
500
R1121N501B
Topt = 25°C
Topt = 25°C
5.0
6.0
5.0
4.0
Output Voltage VOUT (V)
Output Voltage VOUT (V)
4.5
6.0V
3.5
5.0V
3.0
2.5
4.5V
2.0
VIN = 4.3V
1.5
1.0
7.0V
4.0
6.0V
3.0
5.5V
2.0
VIN = 5.3V
1.0
0.5
0.0
0.0
0
2)
100
200
300
400
Output Current IOUT (mA)
0
500
100
200
300
400
Output Current IOUT (mA)
Output Voltage vs. Input Voltage
R1121N181B
R1121N301B
Topt = 25°C
Topt = 25°C
3.1
2.0
IOUT=1mA
3.0
IOUT = 1mA
Output Voltage VOUT (V)
Output Voltage VOUT (V)
1.9
1.8
1.7
1.6
1.5
1.4
30mA
2.9
2.8
2.7
30mA
2.6
1.3
50mA
1.2
1.0
8
500
2.0
3.0
4.0
5.0
6.0
Input Voltage VIN (V)
7.0
8.0
2.5
2.0
50mA
3.0
4.0
5.0
6.0
Input Voltage VIN (V)
7.0
8.0
R1121N
R1121N401B
R1121N501B
Topt = 25°C
Topt = 25°C
4.5
5.5
5.0
Output Voltage VOUT (V)
OUtput Voltage VOUT (V)
IOUT = 1mA
4.0
3.5
30mA
3.0
3.5
30mA
50mA
4.0
5.0
6.0
Input Voltage VIN (V)
7.0
2.5
2.0
8.0
3.0
4.0
5.0
6.0
Input Voltage VIN (V)
7.0
8.0
Dropout Voltage vs. Output Current
R1121N181B
R1121N301B
0.40
1.20
Dropout Voltage VDIF (V)
Topt = 85°C
0.80
0.60
25°C
0.40
-40°C
Dropout Voltage VDIF (V)
0.35
1.00
0.20
Topt = 85°C
0.30
25°C
0.25
0.20
-40°C
0.15
0.10
0.05
0.00
0.00
0
50
100
Output Current IOUT (mA)
0
150
R1121N401B
0.40
0.35
0.35
0.30
Topt = 85°C
0.25
25°C
0.20
0.15
-40°C
0.10
50
100
Output Current IOUT (mA)
150
R1121N501B
0.40
0.05
Dropout Voltage VDIF (V)
Dropout Voltage VDIF (V)
3)
3.0
4.0
3.0
50mA
2.5
2.0
IOUT = 1mA
4.5
0.30
Topt = 85°C
0.25
25°C
0.20
0.15
-40°C
0.10
0.05
0.00
0.00
0
50
100
Output Current IOUT (mA)
150
0
50
100
Output Current IOUT (mA)
150
9
R1121N
4)
Output Voltage vs. Temperature
R1121N181B
1.90
1.88
3.08
1.86
3.06
1.84
1.82
1.80
1.78
1.76
1.74
3.04
3.02
3.00
2.98
2.96
2.94
2.92
1.72
1.70
-50
VIN = 4.0V
IOUT = 30mA
3.10
Output Voltage VOUT (V)
Output Voltage VOUT (V)
R1121N301B
VIN = 2.8V
IOUT = 30mA
-25
0
25
50
Temperature Topt (°C)
75
2.90
-50
100
-25
R1121N401B
0
25
50
Temperature Topt (°C)
5.10
4.08
5.08
4.06
5.06
Output Voltage VOUT (V)
Output Voltage VOUT (V)
4.10
4.04
4.02
4.00
3.98
3.96
3.94
3.92
5)
VIN = 6.0V
IOUT = 30mA
5.04
5.02
5.00
4.98
4.96
4.94
4.92
-25
0
25
50
Temperature Topt (°C)
75
4.90
-50
100
-25
0
25
50
Tempareture Topt (°C)
75
100
Supply Current vs. Input Voltage
R1121N181B
R1121N301B
Topt = 25°C
60
60
50
50
Supply Current ISS (µA)
Supply Current ISS (µA)
Topt = 25°C
40
30
20
0
1.0
40
30
20
10
10
10
100
R1121N501B
VIN = 5.0V
IOUT = 30mA
3.90
-50
75
2.0
3.0
4.0
5.0
6.0
Input Voltage VIN (V)
7.0
8.0
0
1.0
2.0
3.0
4.0
5.0
6.0
Input Voltage VIN (V)
7.0
8.0
R1121N
R1121N401B
R1121N501B
Topt = 25°C
60
60
50
50
Supply Current ISS (µA)
Supply Current ISS (µA)
Topt = 25°C
40
30
20
10
0
1.0
30
20
10
2.0
3.0
4.0
5.0
6.0
Input Voltage VIN (V)
7.0
0
1.0
8.0
2.0
3.0
4.0
5.0
6.0
Input Voltage VIN (V)
7.0
8.0
Supply Current vs. Temperature
R1121N181B
R1121N301B
VIN = 4.0V
50
50
45
45
Supply Current ISS (µA)
Supply Current ISS (µA)
VIN = 2.8V
40
35
30
20
-50
40
35
30
25
25
0
50
Temperature Topt (°C)
20
-50
100
R1121N401B
100
VIN = 6.0V
50
45
45
Supply Current ISS (µA)
50
40
35
30
25
20
-50
0
50
Temperature Topt (°C)
R1121N501B
VIN = 5.0V
Supply Current ISS (µA)
6)
40
40
35
30
25
0
50
Temperature Topt (°C)
100
20
-50
0
50
Temperature Topt (°C)
100
11
R1121N
7)
Dropout Voltage vs. Set Output Voltage
R1121Nxx1B
Topt = 25°C
1.0
Dropout Voltage VDIF (V)
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
8)
2.0
3.0
4.0
Set Output Voltage Vreg (V)
5.0
Ripple Rejection vs. Frequency
R1121N181B
R1121N181B
VIN = 2.8VDC + 0.5Vp-p
COUT = tantal 2.2µF
VIN = 2.8VDC + 0.5Vp-p
COUT = tantal 1.0µF
80
80
70
Ripple Rejection RR (dB)
Ripple Rejection RR (dB)
70
60
50
40
IOUT = 1mA
30
IOUT = 30mA
20
IOUT = 50mA
10
60
50
40
IOUT= 1mA
30
IOUT = 30mA
20
IOUT = 50mA
10
0
0
0.1
1
10
Frequency f (kHz)
0.1
100
1
R1121N301B
VIN = 4.0VDC + 0.5Vp-p
COUT = tantal 2.2µF
80
80
70
Ripple Rejection RR (dB)
70
Ripple Rejection RR (dB)
100
R1121N301B
VIN = 4.0VDC + 0.5Vp-p
COUT = tantal 1.0µF
60
50
40
IOUT = 1mA
30
IOUT = 30mA
20
IOUT = 50mA
10
60
50
40
IOUT = 1mA
30
IOUT = 30mA
20
IOUT = 50mA
10
0
0
0.1
12
10
Frequency f (kHz)
1
10
Frequency f (kHz)
100
0.1
1
10
Frequency f (kHz)
100
R1121N
R1121N401B
R1121N401B
VIN = 5.0VDC + 0.5Vp-p
COUT = tantal 2.2µF
80
80
70
70
Ripple Rejection RR (dB)
Ripple Rejection RR (dB)
VIN = 5.0VDC + 0.5Vp-p
COUT = tantal 1.0µF
60
50
IOUT= 1mA
40
30
IOUT = 30mA
20
IOUT = 50mA
10
50
40
IOUT = 1mA
30
IOUT = 30mA
20
IOUT = 50mA
10
0
0
0.1
1
10
Frequency f (kHz)
0.1
100
1
10
100
Frequency f (kHz)
Ripple Rejection vs. Input Voltage (DC bias)
R1121N301B
R1121N301B
IOUT = 10mA
COUT = 2.2µF
IOUT = 1mA
COUT = 2.2µF
80
80
70
Ripple Rejection RR (dB)
Ripple Rejection RR (dB)
70
60
50
40
f = 400Hz
30
20
f = 1kHz
10
f = 10kHz
60
50
40
f = 400Hz
30
20
f = 1kHz
10
f = 10kHz
0
0
3.1
3.2
3.3
3.4
Input Voltage VIN (V)
3.5
3.1
3.2
3.3
3.4
Input Voltage VIN (V)
3.5
R1121N301B
IOUT = 50mA
COUT = 2.2µF
80
f = 400Hz
70
Ripple Rejection RR (dB)
9)
60
f = 1kHz
60
50
f = 10kHz
40
30
20
10
0
3.1
3.2
3.3
3.4
3.5
Input Voltage VIN (V)
13
R1121N
10) Line Transient Response
R1121N301B
IOUT=30mA
tr=tf=5 µs
COUT=Tantalum 1.0µF
OUtput Voltage VOUT (V)
3.3
5
Input Voltage
4
3.2
3.1
3
Output Voltage
3.0
2
2.9
1
Input Voltage VIN (V)
6
3.4
0
2.8
0
20
40
60
TIme t (µs)
80
100
120
R1121N301B
IOUT=30mA
tr=tf=5 µs
COUT=Tantalum 2.2µF
Output Voltage VOUT (V)
3.3
5
Input Voltage
4
3.2
3.1
3
Output Voltage
3.0
2
2.9
1
Input Voltage VIN (V)
6
3.4
0
2.8
0
20
40
60
Time t (µs)
80
100
120
R1121N301B
IOUT=30mA
tr=tf=5 µs
COUT=Tantalum 6.8µF
Output Voltage VOUT (V)
3.3
5
Input Voltage
4
3.2
3
3.1
Output Voltage
3.0
2
2.9
1
0
2.8
0
14
20
40
60
Time t (µs)
80
100
120
Input Voltage VIN (V)
6
3.4
R1121N
11) Load Transient Response
R1121N301B
VIN=4V
CIN=Tantalum 1µF
COUT=Tantalum 1.0µF
Output Voltage VOUT (V)
3.3
100
Output Current
50
3.2
0
3.1
Output Voltage
3.0
-50
2.9
-100
Output Current IOUT (mA)
150
3.4
-150
2.8
0
2
4
6
8
10
12
Time t (µs)
14
16
18
20
R1121N301B
VIN=4V
CIN=Tantalum 1µF
COUT=Tantalum 2.2µF
Output Voltage VOUT (V)
3.3
100
Output Current
50
3.2
0
3.1
Output Voltage
3.0
-50
2.9
-100
Output Current IOUT (mA)
150
3.4
-150
2.8
0
2
4
6
8
10
12
Time t (µs)
14
16
18
20
R1121N301B
VIN=4V
CIN=Tantalum 1µF
COUT=Tantalum 6.8µF
Output Voltage VOUT (V)
3.3
100
Output Current
50
3.2
0
3.1
Output Voltage
3.0
-50
2.9
-100
Output Current IOUT (mA)
150
3.4
-150
2.8
0
2
4
6
8
10
12
Time t (µs)
14
16
18
20
15
R1121N
TECHNICAL NOTES
G( (!% (*"(#(=
• !(!%#
'#(('*
(#((*
(J
# #% #
" *+ (
$ ( .+ ( (
/((
*"=
4 CE
Vout
1
R1121N301B
3 Vin
Vin
2
GND
Ceramic
Capacitor
Spectrum
S.A. Analyzer
ESR
Iout
Ceramic Capacitor
1µF
Measuring Circuit for white noise ; R1121N301B
(#"(!. # (/(* # #
"((#"
(
("("( (Cµ4.2/(
$
(#
.(=G((
'
#
((
# #(" # #
*#
'#(
(% #( ' ( ;
* % ! " ' &( '#(( ( (:;/
K' (
((L
./ 45C4
./ J+ (
$(=6868
.-/ '# =°
R1121N301B
R1121N301B
Ceramic 2.2µF
Ceramic 1.0µF
100.0
10.0
10.0
ESR (Ω)
ESR (Ω)
100.0
1.0
1.0
0.1
0
50
100
Output Current IOUT (mA)
16
150
0.1
0
50
100
Output Current IOUT (mA)
150
R1121N
• ,4(A3( **
(!*'#(
%(#
, #(
#('$ • ((
#
"
#
(
*µJ'"(4(A3
#
• &( '#((%#
$ # #
% # ! ( ', "( #
TYPICAL APPLICATION
CE
CE
IN
Cap.
VDD
OUT
R1121Nxx1A VOUT
GND
Cap.
IN
Cap.
VDD
OUT
R1121Nxx1B VOUT
GND
Cap.
17