R1121N20A1-TR-FE [RICOH]
LOW NOISE 150mA LDO REGULATOR;
| 型号： | R1121N20A1-TR-FE |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | LOW NOISE 150mA LDO REGULATOR |
| 文件： | 总18页 (文件大小：233K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R1121N SERIES
LOW NOISE 150mA LDO REGULATOR
NO.EA-058-111026
OUTLINE
The R1121N 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 R1121N 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. 35μA
• Standby Mode.................................................................Typ. 0.1μA
• Dropout Voltage ..............................................................Typ. 0.2V (IOUT=100mA)
• Ripple Rejection..............................................................Typ. 70dB(f=1kHz)
• Temperature-Drift Coefficient of Output Voltage.............Typ. ±100ppm/°C
• Line Regulation...............................................................Typ. 0.05%/V
• Output Voltage Accuracy.................................................±2.0%
• Output Voltage Range.....................................................1.5V to 5.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
• Package ........................................................................SOT-23-5 (Mini-mold)
• Built-in chip enable circuit ( 2 types; A: active “L”, B: active “H”)
• Pin-out.............................................................................Similar to the TK112,TK111
APPLICATIONS
• Power source for cellular phones such as GSM, CDMA and various kinds of PCSs.
• Power source for domestic appliances such as cameras, VCRs and camcorders.
• Power source for battery-powered equipment.
1
R1121N
BLOCK DIAGRAM
R1121Nxx1A
R1121Nxx1B
3
1
3
1
VDD
V
OUT
V
DD
V
OUT
Vref
Vref
Current Limit
Current Limit
CE
4
GND
2
CE
4
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
R1121Nxx1∗-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
(B) "H" active
2
R1121N
PIN CONFIGURATION
SOT-23-5
5
4
(mark side)
1
2
3
PIN DESCRIPTION
Pin No
Symbol
VOUT
Description
Output pin
1
2
3
4
5
GND
VDD
Ground Pin
Input Pin
Chip Enable Pin
No Connection
or CE
CE
NC
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
9.0
Unit
V
VIN
Input Voltage
Input Voltage
VCE
(
-0.3 ~ VIN+0.3
-0.3 ~ VIN+0.3
200
V
CE
or CE Pin)
VOUT
IOUT
Output Voltage
V
Output Current
mA
mW
°C
°C
Power Dissipation (SOT-23-5)∗
Operating Temperature Range
Storage Temperature Range
PD
420
Topt
Tstg
-40 ~ 85
-55 ~ 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
R1121N
ELECTRICAL CHARACTERISTICS
• R1121Nxx1A
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VIN = Set VOUT + 1V
VOUT
×0.98
VOUT
×1.02
VOUT
Output Voltage
V
<
1mA
IOUT
30mA
IOUT
Output Current
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
VIN = Set VOUT + 1V
ΔVOUT/ΔIOUT
Load Regulation
12
40
mV
<
1mA
IOUT
80mA
VDIF
ISS
Dropout Voltage
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Supply Current
VIN = Set VOUT + 1V
35
70
μA
μA
Istandby
Supply Current (Standby)
VIN = VCE = Set VOUT + 1V
0.1
1.0
Set VOUT+0.5V
IOUT = 30mA
VIN
8.0V
ΔVOUT/ΔVIN
Line Regulation
0.05
70
0.20
8.0
%/V
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT + 1V
RR
VIN
Ripple Rejection
Input Voltage
dB
V
2.0
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
IOUT = 30mA
±100
ppm/°C
<
−40°C
Topt
85°C
=
=
ISC
RPU
VCEH
VCEL
en
Short Current Limit
VOUT = 0V
50
mA
MΩ
V
2.5
1.5
5.0
10.0
VIN
CE Pull-up Resistance
Input Voltage “H”
CE
0.00
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
R1121N
• R1121Nxx1B
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VOUT
×0.98
VOUT
×1.02
VIN = Set VOUT + 1V
VOUT
IOUT
Output Voltage
Output Current
V
<
1mA
IOUT
30mA
=
=
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
VIN = Set VOUT + 1V
Load Regulation
12
40
mV
ΔVOUT/ΔIOUT
<
1mA
IOUT
80mA
=
=
VDIF
ISS
Dropout Voltage
Supply Current
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
35
70
VIN = Set VOUT + 1V
μA
μA
VIN = Set VOUT + 1V
VCE =GND
Istandby
Supply Current (Standby)
Line Regulation
0.1
1.0
Set VOUT + 0.5V
IOUT = 30mA
VIN
8.0V
0.05
70
0.20
%/V
ΔVOUT/ΔVIN
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT + 1V
RR
VIN
Ripple Rejection
Input Voltage
dB
V
2.0
8.0
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
IOUT = 30mA
±100
ppm/°C
−40°C
Topt
85°C
=
ISC
RPD
VCEH
VCEL
en
Short Current Limit
CE Pull-down Resistance
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
50
mA
MΩ
V
VOUT = 0V
2.5
1.5
5.0
10.0
VIN
0.00
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.
5
R1121N
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25°C
Output Current
Output Voltage
VOUT (V)
IOUT (mA)
Condition
Min.
100
150
<
=
<
=
<
<
1.5
1.8
VOUT
VOUT
1.7
5.0
VIN - VOUT = 1.0V
Topt = 25°C
Dropout Voltage
Output Voltage
VOUT (V)
VDIF (V)
Condition
Min.
0.50
0.40
0.30
Typ.
Max.
1.5
1.6
1.7
<
=
<
=
<
=
<
=
<
=
<
=
<
=
<
=
1.8
2.0
2.5
2.8
3.4
VOUT
VOUT
VOUT
VOUT
VOUT
1.9
2.4
2.7
3.3
5.0
0.60
0.35
0.24
0.20
0.17
1.40
0.70
0.35
0.30
0.26
IOUT = 100mA
<
=
<
=
Note : When set Output Voltage is equal or less than 2.0V,
VIN should be equal or more than 2.0V.
OPERATION
R1121Nxx1A
R1121Nxx1B
1
5
1
5
V
DD
V
OUT
V
DD
V
OUT
R1
R1
Vref
Vref
R2
R2
Current Limit
Current Limit
CE
3
GND
CE
3
GND
2
2
In these ICs, fluctuation of 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.
6
R1121N
TEST CIRCUITS
CE
CE
4
4
V
DD
V
OUT
IN
OUT
V
DD
V
OUT
3
1
R1121Nxx1B Series
IN
OUT
3
1
R1121Nxx1B Series
I
SS
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
V
OUT
IN
OUT
V
DD
V
OUT
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
2.0
3.5
3.0
2.5
2.0
1.5
1.0
1.8
5.0V
3.8V
1.6
1.4
1.2
1.0
0.8
0.6
0.4
4.0V
2.8V
2.3V
3.5V
VIN = 3.3V
V
IN = 2.1V
200
0.5
0.0
0.2
0.0
0
100
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
6.0
5.0
4.0
3.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
7.0V
6.0V
5.0V
6.0V
5.5V
4.5V
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
1.8
1.7
1.6
1.5
IOUT=1mA
I
OUT = 1mA
2.7
2.6
2.5
1.4
1.3
1.2
30mA
30mA
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
Intput Voltage VIN (V)
Intput 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
0.05
0.00
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
V
IN = 4.0V
V
IN = 2.8V
I
OUT = 30mA
IOUT = 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
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
Temperature 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
Intput Voltage VIN (V)
Intput Voltage VIN (V)
6) Supply Current vs. Temperature
R1121N181B
R1121N301B
V
IN = 2.8V
V
IN = 2.8V
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
VIN = 6.0V
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)
11
R1121N
7) Dropout Voltage vs. Set Output Voltage
R1121Nxx1B
Topt = 25
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
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
OUT= 1mA
I
OUT = 1mA
I
OUT = 30mA
OUT = 50mA
I
OUT = 30mA
I
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
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
OUT = 1mA
C
OUT = 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 = 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
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
13
R1121N
10) LineTransient 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
V
IN=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
V
C
C
IN=4V
IN=Tantalum 1μF
OUT=Tantalum 2.2μF
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)
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
When using these ICs, be sure to 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) in the range described as follows:
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
The relationship between IOUT (output current) and ESR of output capacitor is shown in the graphs below. The
conditions when the white noise level is under 40mV (Avg.) are indicated by the hatched area in the graph.
(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 the same external
components as the ones to be used on the PCB.)
<Measurement conditions>
(1)
(2)
(3)
VIN=4V
Frequency Band: 10Hz to 1MHz
Temperature: 25°C
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
·Make VDD and GND lines sufficient. If their impedance is high, noise pick up or incorrect operation may result.
·Connect the capacitor with a capacitance of 1μF or more between VDD and GND as close as possible.
·Set external components, especially the output capacitor, as close as possible to the ICs and make wiring as
short as possible.
TYPICAL APPLICATION
CE
CE
IN
V
DD
VOUT
OUT IN
V
DD
VOUT
OUT
R1121Nxx1A
GND
R1121Nxx1B
GND
Cap.
Cap.
Cap.
Cap.
17
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, fire containment 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.
Ricoh is committed to reducing the environmental loading materials in electrical devices
with a view to contributing to the protection of human health and the environment.
Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since
Halogen Free
April 1, 2012.
http://www.e-devices.ricoh.co.jp/en/
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