R1200L001A-TR [RICOH]
Switching Regulator, 1400kHz Switching Freq-Max, CMOS, PDSO6, DFN-6;
| 型号： | R1200L001A-TR |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Switching Regulator, 1400kHz Switching Freq-Max, CMOS, PDSO6, DFN-6 开关 光电二极管 |
| 文件： | 总17页 (文件大小：358K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R1200x SERIES
STEP-UP DC/DC CONVERTER FOR OLED BACK LIGHT with SHUTDOWN FUNCTION
NO.EA-192-130502
OUTLINE
R1200x series are CMOS-based control type step-up DC/DC converter with low supply current ICs. Each of
these ICs consists of a Nch MOSFET, NPN transistor, an oscillator, PWM comparator, a voltage reference unit,
an error amplifier, a current limit circuit, an under voltage lockout circuit (UVLO), an over voltage protection circuit
(OVP), and a soft start circuit. As the external components, an inductor, resistances or capacitors are necessary
to make a constant output voltage of step-up DC/DC converter with the R1200x. At standby mode, the NPN
transistor can separate the output from the input. During the situation of that, there are two versions.
R1200xxxxA: the output of VOUT is generated to 0V by the low resistance (with the auto discharge function).
R1200xxxxB does not generate the output of VOUT (without the auto discharge function).
The soft-start time (Typ. 1.5ms) and the maximum duty cycle (Typ. 91%) are set internally. For the protection
functions of R1200x series are the current limit function of the LX peak current, the OVP function for detection the
over voltage of output and the UVLO function for protective miss-operation by the low voltage. (The threshold of
OVP is selectable from 17V, 19V or 21V.)
Since the packages for these ICs are DFN1616-6, DFN(PLP)1820-6, SOT-23-6 and WLCSP-6-P1
(Non-promotion), therefore high density mounting of the ICs on boards is possible.
FEATURES
• Supply Current.............................................................Typ. 500μA
• Standby Current...........................................................Max. 3μA
• Input Voltage Range ....................................................2.3V to 5.5V
• Feedback Voltage ........................................................1.0V (Externally adjustable)
• Feedback Voltage Accuracy.........................................±1.5%
• Temperature-Drift Coefficient of Feedback Voltage.....±150ppm/°C
• Oscillator Frequency....................................................Typ. 1.2MHz
• Maximum Duty Cycle...................................................Typ. 91%
• Switch ON Resistance .................................................Typ. 1.35Ω
• UVLO Detector Threshold............................................Typ. 2.0V
• Soft-start Time..............................................................Typ. 1.5ms
• Lx Current Limit Protection ..........................................Typ. 700mA
• OVP Detector Threshold.......................... ...................17V, 19V, 21V
• Switching Control.........................................................PWM
• Built-in a rectifier NPN transistor, at standby mode, complete shutdown is possible.
• Built-in Auto discharge function ...................................A version
• Packages .....................................................................DFN1616-6, DFN(PLP)1820-6, SOT-23-6,
WLCSP-6-P1 (Non-promotion)
• Ceramic capacitors are recommended........................1μF
APPLICATION
• OLED power supply for portable equipment
• White LED Backlight for portable equipment
1
R1200x
BLOCK DIAGRAMS
R1200xxxxA
VFB
VIN
LX
VOUT
UVLO
Error Amp
PWM Comp
Switching
Control
R
Q
S
OVP
Vref
OSC
Chip Enable
Soft Start
Current
Protection
Current
Sense
Slope
Compensation
Σ
GND
CE
R1200xxxxB
VFB
VIN
LX
VOUT
UVLO
Error Amp
PWM Comp
Switching
Control
R
Q
S
OVP
Vref
OSC
Chip Enable
Soft Start
Slope
Compensation
Current
Protection
Current
Sense
Σ
GND
CE
2
R1200x
SELECTION GUIDE
The OVP threshold voltage, auto discharge function, and the package for the ICs can be selected at the user's
request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
WLCSP-6-P1
(Non-promotion)
5,000 pcs
Yes
Yes
R1200Zxxx∗-E2-F
DFN1616-6
DFN(PLP)1820-6
SOT-23-6
5,000 pcs
5,000 pcs
3,000 pcs
Yes
Yes
Yes
Yes
Yes
Yes
R1200Lxxx∗-TR
R1200Kxxx∗-TR
R1200Nxxx∗-TR-FE
xxx : Designation of OVP detector threshold
(001) 17V threshold of OVP
(002) 19V threshold of OVP
(003) 21V threshold of OVP
∗
: The auto discharge function at off state are options as follows.
(A) with auto discharge function at off state
(B) without auto discharge function at off state
The products scheduled to be discontinued : "Non-promotion"
These products will be discontinued in the future. We advise you to select other products.
3
R1200x
PIN CONFIGURATIONS
• WLCSP-6-P1
• DFN1616-6
Top View Bottom View
Top View
Bottom View
4
5
6
6
5
4
6
5
4
4
5
6
∗
3
2
1
1
2
3
1
2
3
3
2
1
• DFN(PLP)1820-6
Top View Bottom View
• SOT-23-6
6
5
4
6
5
4
4
5
6
∗
(mark side)
1
2
3
1
2
3
3
2
1
PIN DESCRIPTIONS
• WLCSP-6-P1 (Non-promotion)
Pin No
Symbol
Pin Description
1
2
3
4
5
6
Lx
Switching Pin (Open Drain Output)
Power Supply Input Pin
Feedback Pin
VIN
VFB
CE
Chip Enable Pin ("H" Active)
Output Pin
VOUT
GND
Ground Pin
• DFN1616-6, DFN(PLP)1820-6
Pin No
Symbol
Pin Description
1
2
3
4
5
6
CE
Chip Enable Pin ("H" Active)
Feedback Pin
VFB
Lx
Switching Pin (Open Drain Output)
Ground Pin
GND
VDD
Input Pin
VOUT
Output Pin
∗) Tab is GND level. (They are connected to the reverse side of this IC.)
The tab is better to be connected to the GND, but leaving it open is also acceptable.
4
R1200x
• SOT-23-6
Pin No
Symbol
CE
Pin Description
Chip Enable Pin ("H" Active)
1
2
3
4
5
6
VOUT
VDD
Output Pin
Input Pin
Lx
Switching Pin (Open Drain Output)
Ground Pin
GND
VFB
Feedback Pin
ABSOLUTE MAXIMUM RATINGS
GND=0V
Symbol
Item
Rating
Unit
V
VIN
VIN Pin Voltage
CE Pin Voltage
VFB Pin Voltage
VOUT Pin Voltage
−0.3 to 6.5
VCE
V
−0.3 to VIN+0.3
−0.3 to VIN+0.3
−0.3 to 25.0
VFB
V
VOUT
V
VLX
ILX
LX Pin Voltage
LX Pin Current
V
−0.3 to 25.0
1000
mA
Power Dissipation (WLCSP-6-P1) (Non-promotion)∗
Power Dissipation (DFN1616-6)∗
633
640
PD
mW
Power Dissipation (DFN(PLP)1820-6)∗
880
Power Dissipation (SOT-23-6)∗
Operating Temperature Range
Storage Temperature Range
420
Topt
Tstg
−40 to 85
−55 to 125
°C
°C
∗) 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.
5
R1200x
ELECTRICAL CHARACTERISTICS
• R1200x
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max. Unit
VIN
Operating Input Voltage
Supply Current
2.3
5.5
1.0
3.0
2.1
V
mA
μA
V
IDD
0.5
0
VIN=5.5V, VFB=0V, Lx at no load
VIN=5.5V, VCE=0V
Istandby Standby Current
VUVLO1
UVLO Detector Threshold VIN falling
1.9
1.5
2.0
VUVLO1
+0.10
VUVLO2
UVLO Released Voltage
VIN rising
2.25
V
VCEH
VCEL
RCE
VFB
CE Input Voltage "H"
CE Input Voltage "L"
CE Pull Down Resistance
VFB Voltage Accuracy
V
V
VIN=5.5V
VIN=2.3V
VIN=3.6V
VIN=3.6V
0.5
600
1200
1.0
2200
1.015
kΩ
V
0.985
ΔVFB/
ΔTopt
VFB Voltage Temperature
Coefficient
ppm
/°C
VIN=3.6V, −40°C ≤ Topt ≤ 85°C
±150
IFB
VFB Input Current
0.1
VIN=5.5V, VFB=0V or 5.5V
VIN=3.6V
−0.1
μA
ms
Ω
tstart
RON
Soft-start Time
1.5
1.35
0
Switch ON Resistance
Switch Leakage Current
Switch Current Limit
NPN VCE Voltage
VIN=3.6V, ISW=100mA
ILXleak
ILXlim
VNPN
3.0
μA
mA
V
400
700
0.8
1000
VIN=3.6V
INPN=100mA
INPNOFF1 NPN Leakage Current 1
INPNOFF2 NPN Leakage Current 2
10
3.0
1.4
VOUT=23V
μA
μA
MHz
%
VOUT=0V, VLX=5.5V
VIN=3.6V, VOUT=VFB=0V
VIN=3.6V, VOUT=VFB=0V
R1200x001x
fosc
Oscillator Frequency
1.0
86
16
18
20
1.2
91
17
19
21
Maxduty Maximum Duty Cycle
18
20
22
VIN=3.6V,
VOVP1
VOVP2
OVP Detector Threshold
OVP Released Voltage
V
R1200x002x
VOUT rising
R1200x003x
VOVP1
−1.1
V
VIN=3.6V, VOUT falling
IDISCHG
IVOUT
VOUT Discharge Current
OVP Sense Current
R1200xxxxA
0.7
6.0
mA
VIN=3.6V, VOUT=0.1V
VIN=3.6V, VOUT=23V
μA
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.
6
R1200x
TYPICAL APPLICATIONS
L1
22μH
C1
1μF
Symbol
L1
Parts Recommendation
V
IN
L
X
22μH LQH32CN220K53L (Murata)
1μF
C1
CE
VOUT
C2
1μF
GRM21BR11E105K (Murata)
C3
R3
C2
1μF
C3
220pF
R2
R1
R1, R2
R3
For VOUT setting
GND
V
FB
2kΩ
z The Method of Output Voltage Setting
⋅ The output voltage can be calculated with divider resistors (R1 and R2) values as the following formula:
Output Voltage = VFB × (R1 + R2) / R1
⋅ The total value of R1 and R2 should be equal or less than 300kΩ. Make the VIN and GND line sufficient. The
large current flows through the VIN and GND line due to the switching. If this impedance (VIN and GND line) is
high, the internal voltage of the IC may shift by the switching current, and the operating may become unstable.
Moreover, when the built-in LX switch is turn OFF, the spike noise caused by the inductor may be generated.
As a result of this, recommendation voltage rating of capacitor (C2) value is equal 1.5 times larger or more than
the setting output voltage.
z Shutdown
⋅ At standby mode, the output is completely separated from the input and shutdown by the NPN transistor of
internal IC. However, the leakage current is generated when the LX pin voltage is equal or more than VIN pin
voltage at standby mode.
⋅ R1200xxxxA (with auto discharge function): In the term of standby mode, the switch is turned ON between VOUT
to GND and the VOUT capacitor is discharged.
⋅ R1200xxxxB (without auto discharge function): The built-in switch for discharge does not turn on, but the OVP
sense resistors between VOUT and GND exists as same as A version.
⋅ However, the both version (A/B) has the OVP sense resistance (4 to 5MΩ) between VOUT and GND (refer to
OVP sense current (IVOUT) on ELECTRICAL CHARACTERISTICS table) and the current flows through from
VOUT to GND.
z Selection of external components
⋅ The recommendation of capacitor value for C1 is in the range from 1μF to 4.7μF. Connect C1 with a
capacitance value between VIN and GND pin, and as close as possible to the pins.
⋅ Connect a capacitor in the range from 1μF to 4.7μF between VOUT and GND pins.
⋅ The recommendation of inductance value is in the range from 4.7μH - 22μH. Choose an inductor of which the
DC resistance is small enough and the permissible current is large enough and be hard for magnetic saturation.
If the inductance value is too small, at the maximum load the peak current may be large and reach the current
limit of LX. (Refer to the item of the operation of the DC/DC converter and output current.)
7
R1200x
⋅ If the spike noise of VOUT may be large, the spike noise may be picked into VFB pin and make the operation
unstable. In this case, use a R3 of the resistance value in the range from 1kΩ to 5kΩ to reduce a noise level of
VFB.
∗ The performance of power source circuits using these ICs extremely depends upon the peripheral circuits. Pay
attention in the selection of the peripheral circuits. In particular, design the peripheral circuits in a way that the
values such as voltage, current, and power of each component, PCB patterns and the IC do not exceed their
respected rated values.
8
R1200x
OPERATION OF STEP-UP DC/DC CONVERTER AND OUTPUT CURRENT
<Basic Circuit>
i2
Diode
IOUT
L
V
IN
VOUT
i1
Lx Tr
CL
GND
<Current through L>
Discontinuous mode
Continuous mode
ILmax
IL
IL
ILmax
ILmin
ILmin
topen
Iconst
t
t
ton
toff
ton
T=1/fosc
toff
T=1/fosc
There are two operation modes of the step-up PWM control-DC/DC converter. That is the continuous mode
and discontinuous mode by the continuousness inductor.
When the transistor turns ON, the voltage of inductor L becomes equal to VIN voltage. The increase value of
inductor current (i1) will be
Δi1 = VIN × ton / L .................................................................................................. Formula 1
As the step-up circuit, during the OFF time (when the transistor turns OFF) the voltage is continually supply
from the power supply. The decrease value of inductor current (i2) will be
∆i2 = (VOUT - VIN) × topen / L................................................................................... Formula 2
At the PWM control-method, the inductor current become continuously when topen=toff, the DC/DC converter
operate as the continuous mode.
9
R1200x
In the continuous mode, the variation of current of i1 and i2 is same at regular condition.
VIN × ton / L = (VOUT - VIN) × toff / L..........................................................................Formula 3
The duty at continuous mode will be
duty (%) = ton / (ton + toff) = (VOUT - VIN) / VOUT .......................................................Formula 4
The average value of inductor current (i1) when topen=toff will be
i1 (Ave.) = VIN × ton / (2 × L)..................................................................................Formula 5
If the input power is equal to the output power, it becomes the continuous mode if the IOUT value is larger than
the value will be calculated by following formula.
2
IOUT = VIN × ton / (2 × L × VOUT)..............................................................................Formula 6
The peak current (ILmax) of inductor will be
ILmax = IOUT × VOUT / VIN + VIN × ton / (2 × L)
ILmax = IOUT × VOUT / VIN + VIN × T × (VOUT - VIN) / (2 × L × VOUT)..............................Formula 7
The peak current value is larger than the IOUT value. In case of this, selecting the condition of the input and the
output and the external components by considering of ILmax value.
The explanation above is based on the ideal calculation, and the loss caused by LX switch and the external
components are not included.
The actual maximum output current will be between 50% and 80% by the above calculations. Especially, when
the IL is large or VIN is low, the loss of VIN is generated with on resistance of the switch.
10
R1200x
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current (L=22μH)
R1200x
R1200x
Set VOUT=5V
Set VOUT=9V
5.10
9.3
9.2
9.1
9.0
8.9
8.8
8.7
5.05
5.00
V
V
V
V
IN=2.8V
IN=3.6V
IN=4.2V
IN=5.0V
4.95
4.90
4.85
V
V
V
IN=2.8V
IN=3.6V
IN=4.2V
0
50
100
150
200
250
0
40
80
120
160
Output Current IOUT (mA)
Output Current IOUT (mA)
R1200x
R1200x
Set VOUT=15V
Set VOUT=18V
15.50
15.25
15.00
14.75
14.50
18.6
18.3
18.0
17.7
17.4
VIN=2.8V
VIN=3.6V
VIN=4.2V
VIN=5.0V
VIN=2.8V
VIN=3.6V
VIN=4.2V
VIN=5.0V
0
20
40
60
80
100
0
20
40
60
80
Output Current IOUT (mA)
Output Current IOUT (mA)
2) Efficiency vs. Output Current
R1200x
R1200x
V
IN=3.6V Set VOUT=15V
V
IN=3.6V Set VOUT=15V
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
LQH32CN100K53 (10μH)
VLF3010AT-100 (10μH)
VLS252010T-100 (10μH)
LQH2MCN100K12 (10μH)
LQH32CN220K53 (22μH)
LQH32CN100K53 (10μH)
LQH32CN4R7M53 (4.7μH)
0
20
40
60
80
0
20
40
60
80
Output Current IOUT (mA)
Output Current IOUT (mA)
11
R1200x
R1200x
R1200x
L=22μH Set VOUT=9V
L=22μH Set VOUT=5V
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
VIN=2.8V
VIN=3.6V
VIN=4.2V
VIN=5.0V
V
V
V
IN=2.8V
IN=3.6V
IN=4.2V
0
50
100
150
200
250
0
40
80
120
160
Output Current IOUT (mA)
Output Current IOUT (mA)
R1200x
R1200x
L=22μH Set VOUT=15V
L=22μH Set VOUT=18V
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
V
V
V
V
IN=2.8V
IN=3.6V
IN=4.2V
IN=5.0V
VIN=2.8V
VIN=3.6V
VIN=4.2V
VIN=5.0V
0
10 20 30 40 50 60 70 80 90 100
Output Current IOUT (mA)
0
10 20 30 40 50 60 70 80
Output Current IOUT (mA)
3) OVP Sense Current vs. Temperature
R1200x
4) Supply Current vs. Temperature
R1200x
V
OUT=23V
VIN=5.5V
6
5
4
3
2
1
0
1200
1000
800
600
400
200
0
-40 -25
0
25
50
75 85
-40 -25
0
25
50
75 85
Temperature Topt (°C)
Temperature Topt (°C)
12
R1200x
5) CE Pulldown Resistance vs. Temperature
R1200x
6) CE Input Voltage "L" vs. Temperature
R1200x
VIN=3.6V
VIN=1.8V
1800
1600
1400
1200
1000
800
1.3
1.1
0.9
0.7
0.5
0.3
600
400
200
0
-40 -25
0
25
50
75 85
-40 -25
0
25
50
75 85
Temperature Topt (°C)
Temperature Topt (°C)
7) CE Input Voltage "H" vs. Temperature
R1200x
8) NPN VCE Voltage vs. Temperature
R1200x
IE=100mA
V
IN=5.5V
1.4
1.2
1.0
0.8
0.6
0.4
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
-40 -25
0
25
50
75 85
-40 -25
0
25
50
75 85
Temperature Topt (°C)
Temperature Topt (°C)
9) VFB Voltage vs. Temperature
R1200x
10) UVLO Detect / Released Voltage vs. Temperature
R1200x
V
IN=3.6V
VIN=3.6V
1.010
1.005
1.000
0.995
0.990
0.985
0.980
0.975
0.970
2.4
2.2
2.0
1.8
1.6
UVLO Released Voltage
UVLO Detector Threshold
-40 -25
0
25
50
75 85
-40 -25
0
25
50
75 85
Temperature Topt (°C)
Temperature Topt (°C)
13
R1200x
11) Oscillator Frequency vs. Temperature
R1200x
12) Maxduty vs. Temperature
R1200x
V
IN=3.6V
VIN=3.6V
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
94
93
92
91
90
-40 -25
0
25
50
75 85
-40 -25
0
25
50
75 85
Temperature Topt (°C)
Temperature Topt (°C)
13) OVP Detect / Released Voltage vs. Temperature
R1200x001x
V
IN=3.6V
18.0
17.5
17.0
16.5
16.0
15.5
15.0
OVP Released Voltage
OVP Detector Threshold
-40 -25
0
25
50
75 85
Temperature Topt (°C)
14) Soft-start Time vs. Temperature
R1200x
15) VOUT Discharge Current vs. Temperature
R1200x
VIN=3.6V
VIN=3.6V
1500
1400
1300
1200
1100
1000
900
1.5
1.2
0.9
0.6
0.3
0
800
700
600
500
-40 -25
0
25
50
75 85
-40 -25
0
25
50
75 85
Temperature Topt (°C)
Temperature Topt (°C)
14
R1200x
16) LX Limit Current vs. Temperature
R1200x
17) Switch ON Resistance vs. Temperature
R1200x
V
IN=3.6V
1100
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
V
V
IN=5.5V
IN=3.6V
IN=2.3V
1000
900
800
700
600
500
400
300
-40 -25
0
25
50
75 85
-40 -25
0
25
50
75 85
Temperature Topt (°C)
Temperature Topt (°C)
18) Load Transient Response (VIN=3.6V, IOUT=5mA↔25mA, tr=tf=0.5μs)
R1200x
R1200x
Set VOUT=5.0V
Set VOUT=15.0V
40
20
0
40
20
0
Output Current 5mA
Output Voltage
25mA
Output Current 5mA
25mA
15.5
15.0
14.5
14.0
5.10
5.00
4.90
Output Voltage
0
1
2
3
4
5
0
1
2
3
4
5
Time t (ms)
Time t (ms)
19) Start-up Waveform (VIN=3.6V, IOUT=20mA)
R1200x001A
R1200x003A
Set VOUT=5.0V
4
Set VOUT=15.0V
4
2
0
CE Input Voltage
2
CE Input Voltage
0
18
15
12
9
6
4
Output Voltage
Output Voltage
2
0
6
3
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
Time t (ms)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
Time t (ms)
15
R1200x
20) Shut-down Waveform (VIN=3.6V, IOUT=20mA)
R1200x001A
R1200x003A
Set VOUT=5.0V
4
Set VOUT=15.0V
4
2
0
2
CE Input Voltage
0
CE Input Voltage
6
4
18
15
12
9
2
6
3
Output Voltage
Output Voltage
0
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
Time t (ms)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
Time t (ms)
21) OVP Waveform (VFB=0V)
R1200x001A
20
15
Output Voltage
10
5
0
4
2
0
CE Input Voltage
0
10 20 30 40 50 60 70
Time t (ms)
16
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
相关型号：
SI9130DB
5- and 3.3-V Step-Down Synchronous ConvertersWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1-E3
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135_11
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9136_11
Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130CG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130LG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130_11
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137DB
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137LG
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9122E
500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
©2020 ICPDF网 联系我们和版权申明