Data Sheet

Datasheet
8.0V to 35V, 1.5A 1ch
Buck Converter with Integrated FET
BD9870FPS
General Description
Key Specifications







The BD9870FPS is a single-channel step-down
switching regulator integrated with a P-Channel
MOSFET capable of PWM operation at 900 kHz. It
employs the use of smaller coil and circuitry to eliminate
the need for external compensation. The circuitry
consists only of a diode, coil and ceramic capacitor thus
reducing the board size significantly.
Features
Input Voltage Range:
8.0V to 35.0V
Output Voltage Range:1.0V to0.8Vx(VCC-IOUTxRON)V
Output Current:
1.5A(Max)
Switching Frequency:
900kHz(Typ)
Output ON-Resistance:
1.0Ω(Typ)
Standby Current:
0μA (Typ)
Operating Temperature Range:
-40°C to +85°C
Package




Built-in P-Channel MOSFET for High Efficiency
Adjustable Output Voltage Via External Resistors
Soft-Start Time: 5ms (Fixed)
Built-In Over-Current Protection and Thermal
Shutdown Circuits
 ON/OFF Control Via STBY Pin
 Ceramic Output Capacitor Compatibility
W(Typ) x D(Typ) x H(Max)
Applications
TVs, Printers, DVD Players, Projectors, Gaming
Devices, PCs, Car Audio/Navigation Systems, ETCs,
Communication Equipment, AV Products, Office
Equipment, Industrial Devices, and more.
TO252S-5
6.50mm x 9.50mm x 1.30mm
Typical Application Circuit
L1
VIN
VCC
+
CIN0
Vo
OUT
+
CIN1
Figur
e 6.
Oscill
ator
Freq
uenc
y vs.
Suppl
y
Volta
ge
D1
CO
R1
STBY
INV
R2
GND
Figure 1. Typical Application Circuit
○Product structure:Silicon monolithic integrated circuit
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Pin Configuration
TO252S-5
(TOP VIEW)
GND
OUT
STBY
INV
OUT
VCC
Figure 2. Pin Configuration
Pin Description
Pin No.
Pin Name
Function
1
VCC
Input power supply pin
2
OUT
Internal Pch FET drain pin
3(Note 1)
OUT
Internal Pch FET drain pin
FIN
GND
Ground
4
INV
Output voltage feedback pin
5
STBY
ON/OFF control pin
(Note 1) Normally OPEN
Block Diagram
VCC
1
VREF
PW
COMP
M
DRIVER
OSC
STBY 5
STBY
CTL
LOGIC
TSD
OCP
2 OUT
Error AMP
4 INV
SS
GND(FIN)
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Absolute Maximum Ratings (Ta=25°C)
Parameter
Supply Voltage(VCC-GND)
Symbol
Rating
Unit
VCC
36
V
STBY-GND
VSTBY
36
V
OUT-GND
VOUT
36
V
INV-GND
VINV
5
V
Maximum Switching Current
IOUT
1.5 (Note 1)
A
Power Dissipation
Pd
0.8
(Note 2)
W
Operating Temperature
Topr
-40 to +85
°C
Storage Temperature
Tstg
-55 to +150
°C
(Note 1) Do not exceed Pd, ASO, and Tjmax=150°C
(Note 2) Derate by 6.4mW/°C when operating above Ta=25°C
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
Recommended Operating Conditions (Ta=-40°C to +85°C)
Parameter
Limit
Symbol
Min
Max
35.0
0.8 x
(VCC -IOUT x
RON)
Input Voltage
VCC
8.0
Output Voltage
VOUT
1.0
Unit
V
V
Electrical Characteristics
(Unless otherwise specified, Ta=25°C,VCC=12V,VOUT=5V,VSTBY=3V)
Limit
Parameter
Symbol
Min
Typ
Output ON-Resistance
RON
-
1.0
Max
1.5
Unit
Ω
η
80
88
-
%
fOSC
810
900
990
kHz
Load Regulation
ΔVOUTLOAD
-
5
40
mV
Line Regulation
ΔVOUTLINE
-
5
25
mV
Over-Current Protection Limit
IOCP
1.6
-
-
A
INV Pin Threshold Voltage
VINV
0.99
1.00
1.01
V
Efficiency
Switching Frequency
IOUT=0.5A
VCC=20V,
IOUT=0.5A to 1.5A
VCC=10V to 30V,
IOUT=1.0A
IINV
-
1
2
μA
ON
VSTBYON
2.0
-
36
V
OFF
VSTBYOFF
-0.3
-
+0.3
V
ISTBY
5
15
30
μA
VSTBY=3V
ICC
-
5
12
mA
VINV=2V
VSTBY=0V
INV Pin Input Current
STBY Pin Threshold
Voltage
Conditions
STBY Pin Input Current
Circuit Current
Stand-by Current
IST
-
0
5
μA
Soft-Start Time
tSS
1
4
10
ms
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Typical Performance Curves
(Unless otherwise specified, Ta=25°C,VCC=12V,VOUT=5V, VSTBY=3V)
IOUT=0mA
Stand-by Current [µA]
Circuit Current [mA]
VSTBY=0
V
VCC=8V
VCC=12V
VCC=35V
VCC=24V
Ambient Temperature [°C]
Input Voltage [V]
Figure 4. Stand-by Current vs Ambient Temperature
Oscillator Frequency [kHz]
Oscillator Frequency [kHz]
Figure 3. Circuit Current vs Supply Voltage
(No Load)
Input Voltage [V]
Figure 5. Oscillator Frequency vs Supply Voltage
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Ambient Temperature [°C]
Figure 6. Oscillator Frequency vs Ambient Temperature
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Output Voltage [V]
Threshold Voltage [V]
Typical Performance Curves - continued
Input Voltage [V]
STBY Input Voltage [V]
Figure 7. Error Amp Threshold Voltage vs Supply Voltage
Figure 8. Output Voltage vs STBY Input Voltage
VCC=8V
Efficiency [%]
Drain-Source Voltage [V]
VCC=8V
VCC=12V
VCC=12V
VCC=24V
VCC=35V
Load Current [A]
Output Current [A]
Figure 10. Efficiency vs Load Current
Figure 9. Driver Drain-Source Voltage vs Output Current
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Typical Performance Curves - continued
Output Voltage [V]
Output Voltage [V]
VCC=35V
VCC=12V
VCC=8V
Load Current [A]
Input Voltage [V]
Figure 12. Output Voltage vs Load Current
Output Voltage [V]
Figure 11. Output Voltage vs Supply Voltage
Load Current [A]
Figure 13. Output Voltage vs Load Current
(Over-Current Protection Characteristics)
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Typical Waveforms
VSTBY=0V to 3V
1V/div
VOUT
Figure 14. Output Start-up Characteristics
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Application Information
1. Block Function Explanations
(1) VREF
This block generates a temperature-independent regulated voltage coming from the VCC input.
(2) OSC
This block generates a triangular wave with an oscillation frequency of 900kHz set by the internal resistors and
capacitors. The output of this block goes to the PWM comparator.
(3) Error AMP
This block monitors the output voltage through a voltage divider network and compares it with an internal reference
voltage. The output of this block is the amplified difference between the sampled output voltage and the reference.
(4) PWM COMP
This block converts the Error AMP output to PWM pulses going to the Driver block.
(5) DRIVER
This push-pull FET driver accepts PWM input pulses from PWM COMP block and drives the internal P-Channel
MOSFET.
(6) STBY
ON/OFF operation of the IC is controlled via the STBY pin. The output is ON when STBY is High.
(7) Thermal Shutdown (TSD)
This circuit protects the IC against thermal runaway and damage due to excessive heat. A thermal sensor detects
the junction temperature and switches the output OFF once the temperature exceeds its threshold value at 175°C. It
has a built-in 15°C hysteresis to prevent malfunctions due to temperature fluctuations.
(8) Over-Current Protection (OCP)
The OCP circuit detects the voltage difference between VCC and OUT by measuring the current through the internal
P-Channel MOSFET. It switches the output OFF once the voltage reaches the threshold value. The OCP block is a
self-recovery type (not latch).
(9) Soft-Start (SS)
This block controls soft start operations. The internal capacitor begins charging at start up when STBY is High.
The soft start time is fixed at 5ms.
2. Notes for PCB Layout
C3
R1:4kΩ
R2:1kΩ
4
INV
STBY
5
L1
1
C2
OUT
VCC
2
5.0V
GND
FIN
D1
C1
Figure 15. Notes for PCB Layout
(1) Place capacitors between VCC and Ground. The Schottky diode should be placed as close as possible to the IC to
reduce noise and maximize efficiency.
(2) Connect resistors between INV and Ground. Also connect the output capacitor filter at the same ground potential in
order to stabilize the output voltage. (If the pattern is longer or thin, it may cause ringing or waveform distortion.)
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3. Application Component Selection and Settings
(1) Inductor L1
Large inductor series impedance will result in deterioration of efficiency. OCP operation greater than 1.6A may cause
the inductor to overheat, possibly leading to overload or output short.
Note that the current rating for the coil should be higher than IOUT (MAX)  I L .
where:
IOUT(MAX): maximum load current
If you allow current flow more than maximum current rating, the coil will overload. It will cause magnetic saturation that
results for efficiency deterioration. Select a coil with enough current rating which does not exceed peak current.
I L 
VCC  VOUT   VOUT
L1
VCC

1
f OSC
where:
L1 is the inductor value.
VCC is the maximum input voltage.
VOUT is the output voltage.
∆IL is the coil ripple current value.
fOSC is the oscillation frequency.
For better efficiency, C10-H5R (Mitsumi) is recommended. The efficiency will improve by 1% to 2%.
(2) Schottky Diode D1
A Schottky diode with extremely low forward voltage should be used. Selection should be based on the following
guidelines regarding maximum forward current, reverse voltage, and power dissipation:
(a)
(b)
(c)
(d)
The maximum current rating is higher than the combined maximum load current and coil ripple current (⊿IL).
The reverse voltage rating must be higher than the VIN value.
Recommend using a diode with smaller the reverse current as possible.
In the high temperature case, the reverse current is increasing and it may cause overdrive.Power dissipation for the
selected diode must be within the rated level.
The power dissipation of the diode is expressed by the following formula:
Pdi  IOUT MAX  VF  (1 - VOUT / VCC )
where:
IOUT(MAX) is the maximum load current.
VF is the forward voltage.
VOUT is the output voltage.
VCC is the input voltage.
(3) Output Capacitor C1
A suitable output capacitor should satisfy the following formula for ESR:
ESR  VL / I L
where:
∆VL is the permissible ripple voltage.
∆IL is the coil ripple current.
Another factor that must be considered is the permissible ripple current. Select a capacitor with sufficient margin,
governed by the following formula:
I RMS  I L / 2 3
where:
IRMS is the effective value of ripple current to the output capacitor.
∆IL is the coil ripple current.
Use ceramic capacitor over B characteristic of temperature. Otherwise, it is possible to cause abnormal operation of IC
depending on the ambient temperature or output voltage setting.
It is also possible to use Al electrolytic capacitor, but use it with sufficient margin.
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(4) Input Capacitor C2
The input capacitor is the source of current flow to the coil via the built-in P-Channel FET when the FET is ON. When
selecting the input capacitor, sufficient margin must be provided to accommodate capacitor voltage and permissible
ripple current. The expression below defines the effective value of the ripple current to the input capacitor. It should be
used in determining the suitability of the capacitor in providing sufficient margin for the permissible ripple current.
I RMS  I OUT  1  V
OUT / VCC   VOUT / VCC
Where:
IRMS is the effective value of the ripple current to the input capacitor.
IOUT is the output load current.
VOUT is the output voltage.
VCC is the input voltage.
(5) Capacitor C3
This capacitor is utilized to stabilize the frequency characteristics, but is seldom used. However, if the phase margin is
insufficient and oscillation is likely to occur, connecting this capacitor may improve frequency stability.
(6) Resistor R1,R2
These resistors determine the output voltage:
VOUT  1.0V   1  R1 / R2

Select resistors less than 10kΩ.
<Recommended Components (Example)>
Inductor
L1=10μH
:C6-K3LA (MITSUMI)
Schottky Diode
D1
:RB050LA-30(ROHM)… use when VCC is less than 30V
D2
:RB050LA-40(ROHM)… use when VCC is greater than 30V
Capacitor
C1=10μF(25V)
: ceramic cap GRM31CB31E106KA75L(Murata)
C2=4.7μF(50V)
: ceramic cap GRM32EB31H475KA87L(Murata)
C3=OPEN
<Recommended Components example 2>…when the Duty ratio of output/input voltage is less than 10%
Inductor
L1=10μH
:C6-K3LA (MITSUMI)
Schottky Diode
D1
:RB050LA-30(ROHM)… use when VCC is less than 30V
D2
:RB050LA-40(ROHM)… use when VCC is more than 30V
Capacitor
C1=100μF(25V)
:Al electric capacitor UHD1E101MED(Nichicon)
C2=4.7μF(50V)
: ceramic cap GRM32EB31H475KA87L(Murata)
C3=OPEN
4. Test Circuit
VCC
cccc
1
OUT
GND
INV
STBY
2
FIN
4
5
SW2
+
SW4
ICC A
A IINV
1kΩ
VCC
2kΩ
SW5
VINV
VSTB
+
f
ISTB
A
V
SW6
VOUT
IOUT
Figure 16. Input Output Measurement Circuit
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I/O Equivalent Circuit
Pin 1 (VCC, GND)
Pin 2 (OUT)
Pin 4 (INV)
Pin 5 (STBY)
V
CC
VCC
VCC
VCC
V
CC
VCC
STBY
VCC
VCC
INV
OUT
GND
Figure 17. Input Output Equivalent Circuit
Power Dissipation
(W)
5
①No heat sink
②2 layer PCB
(Copper laminate area 15 mm x 15mm)
③2 layer PCB
(Copper laminate area 70 mm x 70mm)
4
Power Dissipation [Pd]
③3.50W
3
②1.85W
2
①0.80W
1
0
0
25
50
75 85
100
125
Ambient Temperature [Ta]
150
(°C)
Note: When mounted on a 70mmx70mmx1.6mm board
Figure 18. Power Dissipation
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Operational Notes
1.
Reverse Connection of Power Supply
Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when
connecting the power supply, such as mounting an external diode between the power supply and the IC’s power
supply pins.
2.
Power Supply Lines
Design the PCB layout pattern to provide low impedance supply lines. Separate the ground and supply lines of the
digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the analog
block. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of temperature and
aging on the capacitance value when using electrolytic capacitors.
3.
Ground Voltage
Ensure that no pins are at a voltage below that of the ground pin at any time, even during transient condition.
4.
Ground Wiring Pattern
When using both small-signal and large-current ground traces, the two ground traces should be routed separately but
connected to a single ground at the reference point of the application board to avoid fluctuations in the small-signal
ground caused by large currents. Also ensure that the ground traces of external components do not cause variations
on the ground voltage. The ground lines must be as short and thick as possible to reduce line impedance.
5.
Thermal Consideration
Should by any chance the power dissipation rating be exceeded the rise in temperature of the chip may result in
deterioration of the properties of the chip. In case of exceeding this absolute maximum rating, increase the board size
and copper area to prevent exceeding the Pd rating.
6.
Recommended Operating Conditions
These conditions represent a range within which the expected characteristics of the IC can be approximately
obtained. The electrical characteristics are guaranteed under the conditions of each parameter.
7.
Inrush Current
When power is first supplied to the IC, it is possible that the internal logic may be unstable and inrush current may
flow instantaneously due to the internal powering sequence and delays, especially if the IC has more than one power
supply. Therefore, give special consideration to power coupling capacitance, power wiring, width of ground wiring,
and routing of connections.
8.
Operation Under Strong Electromagnetic Field
Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction.
9.
Testing on Application Boards
When testing the IC on an application board, connecting a capacitor directly to a low-impedance output pin may
subject the IC to stress. Always discharge capacitors completely after each process or step. The IC’s power supply
should always be turned off completely before connecting or removing it from the test setup during the inspection
process. To prevent damage from static discharge, ground the IC during assembly and use similar precautions during
transport and storage.
10. Inter-pin Short and Mounting Errors
Ensure that the direction and position are correct when mounting the IC on the PCB. Incorrect mounting may result in
damaging the IC. Avoid nearby pins being shorted to each other especially to ground, power supply and output pin.
Inter-pin shorts could be due to many reasons such as metal particles, water droplets (in very humid environment)
and unintentional solder bridge deposited in between pins during assembly to name a few.
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Operational Notes – continued
11. Unused Input Pins
Input pins of an IC are often connected to the gate of a MOS transistor. The gate has extremely high impedance and
extremely low capacitance. If left unconnected, the electric field from the outside can easily charge it. The small
charge acquired in this way is enough to produce a significant effect on the conduction through the transistor and
cause unexpected operation of the IC. So unless otherwise specified, unused input pins should be connected to the
power supply or ground line.
12. Regarding the Input Pin of the IC
This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them
isolated. P-N junctions are formed at the intersection of the P layers with the N layers of other elements, creating a
parasitic diode or transistor. For example (refer to figure below):
When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode.
When GND > Pin B, the P-N junction operates as a parasitic transistor.
Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual
interference among circuits, operational faults, or physical damage. Therefore, conditions that cause these diodes to
operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate) should
be avoided.
Resistor
Transistor (NPN)
Pin A
Pin B
C
E
Pin A
N
P+
P
N
N
P+
N
Pin B
B
Parasitic
Elements
N
P+
N P
N
P+
B
N
C
E
Parasitic
Elements
P Substrate
P Substrate
GND
GND
Parasitic
Elements
GND
Parasitic
Elements
GND
N Region
close-by
Figure 19. Example of monolithic IC structure
13. Thermal Shutdown Circuit(TSD)
This IC has a built-in thermal shutdown circuit that prevents heat damage to the IC. Normal operation should always
be within the IC’s power dissipation rating. If however the rating is exceeded for a continued period, the junction
temperature (Tj) will rise which will activate the TSD circuit that will turn OFF all output pins. When the Tj falls below
the TSD threshold, the circuits are automatically restored to normal operation.
Note that the TSD circuit operates in a situation that exceeds the absolute maximum ratings and therefore, under no
circumstances, should the TSD circuit be used in a set design or for any purpose other than protecting the IC from
heat damage.
14. Operation
The IC will turn ON when the voltage at the STBY pin is greater than 2.0V and will switch OFF if under 0.3V.
Therefore, do not input voltages between 0.3V and 2.0V. Malfunctions and/or physical damage may occur.
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Ordering Information
B
D
9
8
7
Part Number
0
F
P
S
Package
FPS = TO252S-5
-
E2
Packaging and forming specification
E2: Embossed tape and reel
(TO252S-5)
Marking Diagram
TO252S-5
(TOP VIEW)
Part Number Marking
BD9870
LOT Number
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Physical Dimension, Tape and Reel Information
Package Name
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Revision History
Date
05.Nov.2014
Revision
001
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Changes
New Release
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Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
, transport
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice-GE
© 2013 ROHM Co., Ltd. All rights reserved.
Rev.003
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,
please consult with ROHM representative in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable
for infringement of any intellectual property rights or other damages arising from use of such information or data.:
2.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the information contained in this document.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice-GE
© 2013 ROHM Co., Ltd. All rights reserved.
Rev.003
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.001
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