R1112N331A-TR-FE [RICOH]
Fixed Positive LDO Regulator, 3.3V, 0.26V Dropout, CMOS, PDSO5, SOT-23, 5 PIN;
| 型号： | R1112N331A-TR-FE |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Fixed Positive LDO Regulator, 3.3V, 0.26V Dropout, CMOS, PDSO5, SOT-23, 5 PIN 光电二极管 输出元件 调节器 |
| 文件： | 总21页 (文件大小：392K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R1112N SERIES
Non-promotion
LOW NOISE 150mA LDO REGULATOR
NO.EA-059-130409
OUTLINE
The R1112N Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low
supply current, low ON-resistance, and high Ripple Rejection. Each of these voltage regulator ICs consists of a
voltage reference unit, an error amplifier, resistors, a current limit circuit, and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function. The line transient response and load
transient response of the R1112N Series are excellent, thus these ICs are very suitable for the power supply for
hand-held communication equipment.
The output voltage of these ICs is fixed with high accuracy. Since the package for these ICs is SOT-23-5
(Mini-mold) package, high density mounting of the ICs on boards is possible.
FEATURES
• Supply Current................................................................Typ. 100μA
• Standby Current ............................................................Typ. 0.1μA
• Dropout Voltage ..............................................................Typ. 0.19V (IOUT=100mA 3.0V Output type)
• Ripple Rejection..............................................................Typ. 80dB(f=1kHz)
• Temperature-Drift Coefficient of Output Voltage.............Typ. ±100ppm/°C
• Line Regulation...............................................................Typ. 0.05%/V
• Output Voltage Accuracy.................................................±2.0%
• Excellent Dynamic Response
• Package ........................................................................SOT-23-5(Mini-mold)
• Output Voltage ................................................................1.5V to 5.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
• Built-in chip enable circuit ( 2 types; A: active “Low”, B: active “High”)
• Pin-out.............................................................................Similar to the LP2980/LP2985
• Built-in fold-back protection circuit..................................Typ.30mA (Current at short mode)
• Ceramic capacitors recommended to be used with this IC
APPLICATIONS
• Power source for cellular phones such as GSM, CDMA and various kinds of PCSs.
• Power source for electrical appliances such as cameras, VCRs and camcorders.
• Power source for battery-powered equipment.
1
R1112N
Non-promotion
BLOCK DIAGRAM
R1112Nxx1A
R1112Nxx1B
1
5
1
5
V
DD
V
OUT
V
DD
VOUT
Vref
Vref
CE
3
Current Limit
GND
2
CE
3
Current Limit
GND
2
SELECTION GUIDE
The output voltage, the active type for the ICs can be selected at the user's request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
SOT-23-5
3,000 pcs
Yes
Yes
R1112Nxx1∗-TR-FE
xx: The output voltage can be designated in the range from 1.5V(15) to 5.0V(50) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
∗ : Designation of Active Type.
(A) "L" active type
(B) "H" active type
The products scheduled to be discontinued : "Non-promotion"
These products will be discontinued in the future. We advise you to select other products.
2
R1112N
Non-promotion
PIN CONFIGURATION
SOT-23-5
5
4
(mark side)
1
2
3
PIN DESCRIPTION
Pin No
Symbol
Pin Description
1
2
3
4
5
VDD
Input Pin
GND
Ground Pin
Chip Enable Pin
No Connection
Output pin
or CE
CE
NC
VOUT
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
V
VIN
Input Voltage
Input Voltage
7.0
-0.3 to VIN+0.3
-0.3 to VIN+0.3
200
VCE
(
V
CE
or CE Pin)
VOUT
IOUT
Output Voltage
Output Current
Power Dissipation
V
mA
mW
°C
°C
PD
250
Topt
Tstg
Operating Temperature Range
Storage Temperature Range
-40 to 85
-55 to 125
∗) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
3
R1112N
Non-promotion
ELECTRICAL CHARACTERISTICS
• R1112Nxx1A
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
VIN = Set VOUT + 1V
1mA ≤ IOUT ≤ 30mA
VOUT
×0.98
VOUT
×1.02
VOUT
Output Voltage
IOUT
Output Current
VIN− Set VOUT = 1.0V
150
mA
mV
VIN = Set VOUT + 1V
1mA ≤ IOUT ≤ 80mA
ΔVOUT/ΔIOUT
Load Regulation
12
40
VDIF
ISS
Dropout Voltage
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Supply Current
VIN = Set VOUT + 1V
100
0.1
170
1.0
μA
μA
Istandby
Supply Current (Standby)
VIN = VCE = Set VOUT + 1V
Set VOUT+0.5V ≤ VIN ≤ 6.0V
IOUT = 30mA
ΔVOUT/ΔVIN
Line Regulation
0.05
80
0.20
%/V
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT + 1V
RR
VIN
Ripple Rejection
Input Voltage
dB
V
6.0
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
IOUT = 30mA
−40°C ≤ Topt ≤ 85°C
±100
ppm/°C
ISC
RPU
VCEH
VCEL
en
Short Current Limit
VOUT = 0V
30
mA
MΩ
V
2.5
1.5
0
5.0
10.0
VIN
CE Pull-up Resistance
Input Voltage “H”
CE
0.25
V
CE Input Voltage “L”
Output Noise
BW=10Hz to 100kHz
30
μVrms
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
4
R1112N
Non-promotion
• R1112Nxx1B
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
VOUT
×0.98
VOUT
×1.02
VIN = Set VOUT + 1V
1mA ≤ IOUT ≤ 30mA
VOUT
IOUT
Output Voltage
Output Current
VIN− Set VOUT = 1.0V
150
mA
mV
VIN = Set VOUT + 1V
1mA ≤ IOUT ≤ 80mA
Load Regulation
12
40
ΔVOUT/ΔIOUT
VDIF
ISS
Dropout Voltage
Supply Current
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
100
0.1
170
1.0
VIN = Set VOUT + 1V
μA
μA
VIN = Set VOUT + 1V
VCE =GND
Istandby
Supply Current (Standby)
Line Regulation
Set VOUT + 0.5V ≤ VIN ≤ 6.0V
IOUT = 30mA
0.05
80
0.20
%/V
ΔVOUT/ΔVIN
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT + 1V
RR
VIN
Ripple Rejection
Input Voltage
dB
V
6.0
Output Voltage
Temperature Coefficient
IOUT = 30mA
−40°C ≤ Topt ≤ 85°C
ΔVOUT/ΔT
±100
ppm/°C
ISC
RPD
VCEH
VCEL
en
Short Current Limit
CE Pull-down Resistance
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
30
mA
MΩ
V
VOUT = 0V
2.5
1.5
0
5.0
10.0
VIN
0.25
V
30
BW=10Hz to 100kHz
μVrms
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25°C
Dropout Voltage
Output Voltage
VDIF (V)
VOUT (V)
Condition
Typ.
0.32
0.28
0.25
0.20
0.19
Max.
0.55
0.47
0.35
0.29
0.26
1.5 ≤ VOUT ≤ 1.6
1.7 ≤ VOUT ≤ 1.8
1.9 ≤ VOUT ≤ 2.3
2.4 ≤ VOUT ≤ 2.7
2.8 ≤ VOUT ≤ 5.0
IOUT = 100mA
∗) The products of the Set Vout ≤ 1.8V, the operation may become unstable in case of VIN ≤ 2.0V, so please
use the products on condition that VIN ≥ 2.0V.
5
R1112N
Non-promotion
OPERATION
R1112Nxx1A
R1112Nxx1B
1
5
1
5
V
DD
V
OUT
V
DD
V
OUT
R1
R1
Vref
Vref
R2
R2
Current Limit
Current Limit
CE
GND
CE
3
GND
3
2
2
In these ICs, fluctuation of the output voltage, VOUT is detected by feed-back registers R1, R2, and the result is
compared with a reference voltage by the error amplifier, so that a constant voltage is output. A current limit
circuit for protection in short mode and a chip enable circuit, are included.
TECHNICAL NOTES
When using these ICs, consider the following points:
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, be sure to use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series
Resistance).
We use Ceramic Capacitors for evaluation of these ICs.
Recommended Capacitors; GRM40X5R225K6.3 (Murata)
GRM40-034X5R335K6.3 (Murata)
GRM40-034X5R475K6.3 (Murata)
(Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase
compensation, the operation might be unstable. Because of this, test these ICs with as same external
components as ones to be used on the PCB.)
PCB Layout
Make VDD and GND lines sufficient. If their impedance is high, picking up the noise or unstable operation may
result. Connect a capacitor with a capacitance value of 2.2μF or more between VDD and GND pin as close as
possible.
Set external components, especially output capacitor as close as possible to the ICs and make wiring as short
as possible.
6
R1112N
Non-promotion
TEST CIRCUITS
CE
CE
3
3
V
DD
V
OUT
V
DD
V
OUT
IN
OUT
IN
OUT
1
5
1
5
R1112Nxx1B Series
R1112Nxx1B Series
I
OUT
I
SS
2
2
GND
GND
2.2μF
2.2μF
Fig.1 Standard test Circuit
Fig.2 Supply Current Test Circuit
CE
3
CE
3
V
DD
V
OUT
V
DD
V
OUT
IN
OUT
IN
OUT
1
5
1
5
R1112Nxx1B Series
R1112Nxx1B Series
IOUT
P. G
2
2
GND
GND
2.2μF
I1 I2
Fig.3 Ripple Rejection, Line Transient
Response Test Circuit
Fig.4 Load Transient Response Test Circuit
7
R1112N
Non-promotion
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1112N151B
R1112N201B
2.5
2
1.8
1.6
1.4
VIN=2.0V
VIN=2.5V
VIN=3.5V
1.2
1
VIN=2.3V
VIN=2.5V
VIN=3.0V
VIN=4.0V
1.5
1
0.8
0.6
0.4
0.5
0
0.2
0
0
100
200
300
400
500
0
100
200
300
400
500
Output Current IOUT(mA)
Output Current IOUT(mA)
R1112N301B
R1112N401B
3.5
3
5
4
3
2
1
0
2.5
2
V
IN=3.3V
IN=3.5V
IN=4.0V
IN=5.0V
V
IN=4.3V
IN=4.5V
IN=5.0V
IN=6.0V
V
V
V
V
V
V
1.5
1
0.5
0
0
100
200
300
400
500
0
100
200
300
400
500
Output Current IOUT(mA)
Output Current IOUT(mA)
R1112N501B
6
5
4
3
2
1
0
V
IN=5.3V
IN=5.5V
IN=6.0V
IN=7.0V
V
V
V
0
100
200
300
400
500
Output Current IOUT(mA)
8
R1112N
Non-promotion
2) Output Voltage vs. Input Voltage
R1112N151B
R1112N201B
1.600
2.100
2.000
1.900
1.800
1.700
1.600
1.500
1.500
1.400
1.300
1.200
1.100
1.000
IOUT=1mA
IOUT=30mA
IOUT=50mA
IOUT=1mA
IOUT=30mA
IOUT=50mA
1
2
2
2
3
4
5
6
7
7
7
1
2
3
4
5
6
7
Input Voltage VIN(V)
Input Voltage VIN(V)
R1112N301B
R1112N401B
3.100
3.000
2.900
2.800
2.700
2.600
2.500
4.500
4.000
3.500
3.000
2.500
I
I
I
OUT=1mA
OUT=30mA
OUT=50mA
I
OUT=1mA
OUT=30mA
OUT=50mA
I
I
3
4
5
6
2
3
4
5
6
7
Input Voltage VIN(V)
Input Voltage VIN(V)
R1112N501B
5.500
5.000
4.500
4.000
3.500
3.000
2.500
I
OUT=1mA
OUT=30mA
OUT=50mA
I
I
3
4
5
6
Input Voltage VIN(V)
9
R1112N
Non-promotion
3) Dropout Voltage vs. Output Current
R1112N151B
R1112N201B
0.600
0.600
0.500
0.400
0.300
0.200
0.100
0.000
Topt=-40°C
Topt=25°C
Topt=85°C
Topt=-40°C
Topt=25°C
Topt=85°C
0.500
0.400
0.300
0.200
0.100
0.000
0
0
0
50
100
150
150
150
0
50
100
150
Output Current IOUT(mA)
Output Current IOUT(mA)
R1112N301B
R1112N401B
0.600
0.500
0.400
0.300
0.200
0.100
0.000
0.600
0.500
0.400
0.300
0.200
0.100
0.000
Topt=-40°C
Topt=25°C
Topt=85°C
Topt=-40°C
Topt=25°C
Topt=85°C
50
100
0
50
100
150
Output Current IOUT(mA)
Output Current IOUT(mA)
R1112N501B
0.600
0.500
0.400
0.300
0.200
0.100
0.000
Topt=-40°C
Topt=25°C
Topt=85°C
50
100
Output Current IOUT(mA)
10
R1112N
Non-promotion
4) Output Voltage vs. Temperature
R1112N151A/B
R1112N201A/B
VIN=2.5V CIN=1μF
V
IN=3.0V CIN=1μF
COUT=2.2μF IOUT=30mA
C
OUT=2.2μF IOUT=30mA
1.53
1.52
2.10
2.08
2.06
2.04
2.02
2.00
1.98
1.96
1.94
1.92
1.90
1.51
1.50
1.49
1.48
1.47
-50
-50
-50
-25
-25
-25
0
25
100
50
75
-50
-25
0
25
100
50
75
Temperature Topt (°C)
Temperature Topt (°C)
R1112N301A/B
R1112N401A/B
V
IN=5.0V CIN=1μF
VIN=4.0V CIN=1μF
C
OUT=2.2μF IOUT=30mA
COUT=2.2μF IOUT=30mA
4.08
4.06
4.04
4.02
3.06
3.04
3.02
3.00
2.98
4.00
3.98
3.96
3.94
2.96
2.94
3.92
-50
-25
0
25
100
0
25
100
50
75
50
75
Temperature Topt (°C)
Temperature Topt (°C)
R1112N501A/B
V
IN=6.0V CIN=1μF
C
OUT=2.2μF IOUT=30mA
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
0
25
100
50
75
Temperature Topt (°C)
11
R1112N
Non-promotion
5) Supply Current vs. Input Voltage
R1112N151B
R1112N201B
120
120
100
100
80
60
40
20
0
80
60
40
20
0
1
1
1
2
2
2
3
4
5
6
6
6
7
7
7
1
2
3
4
5
6
7
Input Voltage VIN (V)
Input Voltage VIN (V)
R1112N301B
R1112N401B
120
100
120
100
80
60
40
20
0
80
60
40
20
0
3
4
5
1
2
3
4
5
6
7
Input Voltage VIN (V)
Input Voltage VIN (V)
R1112N501B
120
100
80
60
40
20
0
3
4
5
Input Voltage VIN (V)
12
R1112N
Non-promotion
6) Supply Current vs. Temperature
R1112N151A/B
R1112N201A/B
V
C
IN=2.5V CIN=1μF
V
C
IN=3.0V CIN=1μF
OUT=2.2μF
OUT=2.2μF
200
150
100
50
200
150
100
50
0
0
-50
-25
-25
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt (°C)
Temperature Topt (°C)
R1112N301A/B
R1112N401A/B
V
C
IN=4.0V CIN=1μF
OUT=2.2μF
V
IN=5.0V CIN=1μF
COUT=2.2μF
200
150
100
50
200
150
100
50
0
0
-50
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt (°C)
Temperature Topt (°C)
R1112N501A/B
V
C
IN=6.0V CIN=1μF
OUT=2.2μF
200
150
100
50
0
-50
0
25
50
75
100
Temperature Topt (°C)
13
R1112N
Non-promotion
7) Ripple Rejection vs. Frequency
R1112N151A/B
R1112N201A/B
VIN=2.5V+0.5Vp-p
VIN=3.0V+0.5Vp-p
C
OUT=2.2μF IOUT=30mA
COUT=2.2μF IOUT=30mA
90.00
80.00
90.00
80.00
70.00
60.00
50.00
40.00
30.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
20.00
10.00
0.00
0.1
0.1
0.1
1
10
100
0.1
1
10
100
Frequency Freq (kHz)
Frequency Freq (kHz)
R1112N301A/B
R1112N401A/B
V
IN=4.0V+0.5Vp-p
OUT=2.2μF IOUT=30mA
VIN=5.0V+0.5Vp-p
COUT=2.2μF IOUT=30mA
C
90.00
80.00
90.00
80.00
70.00
60.00
50.00
40.00
30.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
20.00
10.00
0.00
1
10
100
0.1
1
10
100
Frequency Freq (kHz)
Frequency Freq (kHz)
R1112N501A/B
V
IN=6.0V+0.5Vp-p
OUT=2.2μF IOUT=30mA
C
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
1
10
100
Frequency Freq (kHz)
14
R1112N
Non-promotion
8) Ripple Rejection vs. Input Voltage (DC bias)
R1112N301B
R1112N301B
C
OUT=Ceramic 2.2μF
C
OUT=Ceramic 2.2μF
I
OUT=1mA
I
OUT=10mA
90.00
80.00
90.00
80.00
70.00
60.00
50.00
40.00
30.00
70.00
60.00
50.00
40.00
30.00
f=400Hz
f=1kHz
f=10kHz
f=400Hz
f=1kHz
f=10kHz
20.00
10.00
0.00
20.00
10.00
0.00
3.10
3.20
3.30
3.40
3.50
3.10
3.20
3.30
3.40
3.50
Input Voltage VIN (V)
Input Voltage VIN (V)
R1112N301B
C
OUT=Ceramic 2.2μF
I
OUT=50mA
90.00
80.00
70.00
60.00
50.00
40.00
30.00
f=400Hz
f=1kHz
f=10kHz
20.00
10.00
0.00
3.10
3.20
3.30
3.40
3.50
Input Voltage VIN (V)
9) Input Transient Response
R1112N501B
Tek Run : 2.50MS/s Average
Topt=25°C
VIN
1→
2→
VIN=2.5V↔3.5V
IOUT=30mA
CIN=none
V
OUT
COUT=2.2μF
tr/tf=5μs
ChC1h1 1.00V
Ch2 20.0mV M20.0μs
15
R1112N
Non-promotion
R1112N201B
Tek Run : 2.50MS/s Average
Topt=25°C
VIN
1→
2→
VIN=3.0V↔4.0V
IOUT=30mA
CIN=none
V
OUT
COUT=2.2μF
tr/tf=5μs
Ch1 1.00V
Ch2 20.0mV M20.0μs
R1112N301B
Topt=25°C
Tek Run : 2.50MS/s Average
VIN
1→
2→
VIN=4.0V↔5.0V
IOUT=30mA
CIN=none
V
OUT
COUT=2.2μF
tr/tf=5μs
Ch1 1.00V
Ch2 20.0mV M20.0μs
R1112N401B
Tek Run : 2.50MS/s Average
Topt=25°C
VIN
1→
2→
VIN=5.0V↔6.0V
IOUT=30mA
CIN=none
V
OUT
COUT=2.2μF
tr/tf=5μs
Ch1 1.00V
Ch2 20.0mV M20.0μs
16
R1112N
Non-promotion
R1112N501B
Tek Run : 2.50MS/s Average
Topt=25°C
VIN
1→
2→
VIN=6.0V↔7.0V
IOUT=30mA
CIN=none
COUT=2.2μF
tr/tf=5μs
V
OUT
Ch1 1.00V
Ch2 20.0mV M20.0μs
10) Load Transient Response
R1112N151B
Topt=25°C
Tek Run : 2.50MS/s Average
I
OUT
1→
IOUT=50mA↔100mA
VIN=2.5V
CIN=2.2μF
V
OUT
2→
COUT=2.2μF
tr/tf=5μs
Ch1 500mV Ch2 50.0mV M20.0μs
R1112N201B
Topt=25°C
Tek Run : 2.50MS/s Average
I
OUT
1→
IOUT=50mA↔100mA
VIN=3.0V
CIN=2.2μF
VOUT
2→
COUT=2.2μF
tr/tf=5μs
Ch1 500mV Ch2 50.0mV M20.0μs
17
R1112N
Non-promotion
R1112N301B
Tek Run : 2.50MS/s Average
Topt=25°C
I
OUT
1→
IOUT=50mA↔100mA
VIN=4.0V
CIN=2.2μF
V
OUT
2→
COUT=2.2μF
tr/tf=5μs
Ch1 500mV Ch2 50.0mV M20.0μs
R1112N401B
Topt=25°C
Tek Run : 2.50MS/s Average
I
OUT
1→
IOUT=50mA↔100mA
VIN=5.0V
V
OUT
2→
CIN=2.2μF
COUT=2.2μF
tr/tf=5μs
Ch1 500mV Ch2 50.0mV M20.0μs
R1112N501B
Tek Run : 2.50MS/s Average
Topt=25°C
I
OUT
1→
IOUT=50mA↔100mA
VIN=6.0V
CIN=2.2μF
COUT=2.2μF
tr/tf=5μs
V
OUT
2→
Ch1 500mV Ch2 50.0mV M20.0μs
18
R1112N
Non-promotion
TECHNICAL NOTES
When using these ICs, consider the following points:
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, be sure to use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series
Resistance) of which is in the range described as follows:
CE
3
1
V
OUT1
5
Ceramic
Cap.
R1112Nxx1B
S.A
Spectrum
ESR
V
IN
GND
Ceramic
Cap.
2
V
IN
I
OUT
Analyzer
Measuring Circuit for white noise; R1112N301B
The relationship between IOUT (the output current) and ESR of the output capacitor is shown in the graphs
below. The conditions when the white noise level is under 40μV (Avg.) are indicated by the hatched area in the
graph.
(Note: When additional ceramic capacitors are connected to the output pin with the output capacitor for phase
compensation, operation might be unstable. Because of this, test these ICs with the same external components
as the ones to be used on the PCB.)
<Measuring Conditions>
(1)VIN=VOUT+1V
(2)Frequency band: 10Hz to 1MHz
(3)Temperature: 25°C
R1112N151B
R1112N151B
COUT=2.2μF,CIN=2.2μF
COUT=4.7μF,CIN=2.2μF
100
10
100
10
1
0.1
1
0.1
0.01
0.01
0
30
60
90
120
150
0
30
60
90
120
150
IOUT (mA)
I
OUT (mA)
19
R1112N
Non-promotion
R1112N301B
R1112N301B
COUT=2.2μF,CIN=2.2μF
COUT=4.7μF,CIN=2.2μF
100
10
100
10
1
0.1
1
0.1
0.01
0.01
0
0
30
60
90
120
150
30
60
90
120
150
I
OUT (mA)
IOUT (mA)
TYPICAL APPLICATION
CE
CE
IN
V
DD
V
OUT
OUT IN
V
DD
V
OUT
OUT
R1112Nxx1A
Series
R1112Nxx1B
Series
GND
GND
Cap.
Cap.
Cap.
Cap.
(External Components)
Output Capacitor; Ceramic 2.2μF (Set Output Voltage in the range from 2.5 to 5.0V)
Ceramic 4.7μF (Set Output Voltage in the range from 1.5 to 2.5V)
Input Capacitor; Ceramic 2.2μF
20
1.The products and the product specifications described in this document are subject to change or
discontinuation of production without notice for reasons such as improvement. Therefore, before
deciding to use the products, please refer to Ricoh sales representatives for the latest
information thereon.
2.The materials in this document may not be copied or otherwise reproduced in whole or in part
without prior written consent of Ricoh.
3.Please be sure to take any necessary formalities under relevant laws or regulations before
exporting or otherwise taking out of your country the products or the technical information
described herein.
4.The technical information described in this document shows typical characteristics of and
example application circuits for the products. The release of such information is not to be
construed as a warranty of or a grant of license under Ricoh's or any third party's intellectual
property rights or any other rights.
5.The products listed in this document are intended and designed for use as general electronic
components in standard applications (office equipment, telecommunication equipment,
measuring instruments, consumer electronic products, amusement equipment etc.). Those
customers intending to use a product in an application requiring extreme quality and reliability,
for example, in a highly specific application where the failure or misoperation of the product
could result in human injury or death (aircraft, spacevehicle, nuclear reactor control system,
traffic control system, automotive and transportation equipment, combustion equipment, safety
devices, life support system etc.) should first contact us.
6.We are making our continuous effort to improve the quality and reliability of our products, but
semiconductor products are likely to fail with certain probability. In order to prevent any injury to
persons or damages to property resulting from such failure, customers should be careful enough
to incorporate safety measures in their design, such as redundancy feature, firecontainment
feature and fail-safe feature. We do not assume any liability or responsibility for any loss or
damage arising from misuse or inappropriate use of the products.
7.Anti-radiation design is not implemented in the products described in this document.
8.Please contact Ricoh sales representatives should you have any questions or comments
concerning the products or the technical information.
For the conservation of the global environment, Ricoh is advancing the decrease of the negative environmental impact material.
After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.
Basically after Apr. 1, 2012, we will ship out the Power Management ICs of the Halogen Free products only. (Ricoh Halogen Free products are
also Antimony Free.)
Halogen Free
RICOH COMPANY, LTD.
Electronic Devices Company
http://www.ricoh.com/LSI/
RICOH COMPANY, LTD.
Electronic Devices Company
● Higashi-Shinagawa Office (International Sales)
3-32-3, Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-8655, Japan
Phone: +81-3-5479-2857 Fax: +81-3-5479-0502
RICOH EUROPE (NETHERLANDS) B.V.
● Semiconductor Support Centre
“Nieuw Kronenburg”Prof. W.H. Keesomlaan 1, 1183 DJ, Amstelveen, The Netherlands
P.O.Box 114, 1180 AC Amstelveen
Phone: +31-20-5474-309 Fax: +31-20-5474-791
RICOH ELECTRONIC DEVICES KOREA Co., Ltd.
11 floor, Haesung 1 building, 942, Daechidong, Gangnamgu, Seoul, Korea
Phone: +82-2-2135-5700 Fax: +82-2-2135-5705
RICOH ELECTRONIC DEVICES SHANGHAI Co., Ltd.
Room403, No.2 Building, 690#Bi Bo Road, Pu Dong New district, Shanghai 201203,
People's Republic of China
Phone: +86-21-5027-3200 Fax: +86-21-5027-3299
RICOH COMPANY, LTD.
Electronic Devices Company
● Taipei office
Room109, 10F-1, No.51, Hengyang Rd., Taipei City, Taiwan (R.O.C.)
Phone: +886-2-2313-1621/1622 Fax: +886-2-2313-1623
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