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High Performance Class-D Speaker Amplifier Series
7W+7W Class-D Speaker Amplifier for Analog Input
BD5427EFS
No.09075EAT06
Overview BD5427EFS is a 7W + 7W stereo class-D power amplifier IC, developed for space-saving and low heat-generation applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an ultimate level. With this technology, the IC has achieved high efficiency of 80% (7W + 7W output with 8 load). The IC,in addition, employs a compact back-surface heat radiation type power package to achieve low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a total output of 14W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality playback of the sound system. Features 1) A high efficiency of 80% (7W + 7W output with 8 load), which is the highest grade in the industry and low heatgeneration. 2) Driving a lowest rating load of 6 is allowed. 3) Pop noise upon turning power on/off and power interruption has been reduced. 4) High-quality audio muting is implemented by soft-switching technology. 5) High-reliability design provided with built-in protection circuits against high temperatures, against VCC shorting and GND shorting, against reduced-voltage, and against applying DC voltage to speaker. 6) A master/slave function allowing synchronization of multiple devices reduces beat noises. 7) Adjustment of internal PWM sampling clock frequencies (250kHz to 400kHz) allows easy protective measures against unwanted radio emission to AM radio band. 8) A compact back-surface heat radiation type power package is employed. HTSSOP-A44(5mm x 7.5mm x 1.0mm, pitch 0.8mm
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1/15
2009.06 - Rev.A
BD5427EFS
Technical Note
Absolute Maximum Ratings A circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to prevent reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and reliability. The following values assume Ta =25. For latest values, refer to delivery specifications. Symbol Rating Unit Item Supply voltage Power dissipation Input voltage for signal pin Input voltage for control pin Input voltage for clock pin Operating temperature range Storage temperature range Maximum junction temperature VCC Pd VIN VCONT VOSC Topr Tstg Tjmax +20 2.0 4.5 -0.2 to +7.2 -0.2 to Vcc+0.2 -0.2 to +7.2 -40 to +85 -55 to +150 +150 V W W V V V (Note 3) (Note 4) Pin 1, 44 (Note 1) Pin 20, 24 (Note 1) Pin 23 (Note 1)
Conditions
Pin 7, 8, 15, 16, 29, 30, 37, 38, 40 (Note 1, 2)
(Note 1) A voltage that can be applied with reference to GND (pins 11, 12, 33, 34, and 43) (Note 2) Pd and Tjmax=150must not be exceeded. (Note 3) 70mm x 70mm x 1.6mm FR4 One-sided glass epoxy board (Back copper foil 0%) installed. If used under Ta=25or higher, reduce 16mW for increase of every 1. The board is provided with thermal via. (Note 4) 70mm x 70mm x 1.6mm FR4 Both-sided glass epoxy board (Back copper foil 100%) installed. If used under Ta=25or higher, reduce 36mW for increase of every 1. The board is provided with thermal via.
Operating Conditions The following values assume Ta =25. Check for latest values in delivery specifications. Item Symbol Rating Unit Supply voltage Load resistance
(Note 5) Pd should not be exceeded.
Conditions
VCC RL
+10 to +16.5 6 to 16
V
Pin 7, 8, 15, 16, 29, 30, 37, 38, 40 (Note 5)
Electrical Characteristics Except otherwise specified Ta = 25, VCC = 12V, fIN = 1kHz, Rg = 0, RL = 8,MUTEX="H", MS="L" For latest values, refer to delivery specifications. Representative Item Symbol Unit Conditions value Whole circuit Circuit current 1 (Sampling mode) Circuit current 2 (Muting mode) Control circuit "H" level input voltage "L" level input voltage Audio circuit Voltage gain Maximum output power 1 (Note 6) Total harmonic distortion (Note 6) Crosstalk Output noise voltage (Sampling mode) Residual noise voltage (Muting mode) Internal sampling clock frequency GV PO THD CT VNO VNOM FOSC 28 7 0.1 85 80 1 250 dB W % dB Vrms Vrms kHz PO = 1W THD+N = 10% PO = 1W, BW=20Hz to 20kHz PO = 1W, Rg = 0, BW = IHF-A Rg = 0, BW = IHF-A Rg = 0, BW = IHF-A, MUTEX = "L" MS = "L" (In master operation) VIH VIL 2.3 to 12 0 to 0.8 V V MUTEX, MS MUTEX, MS ICC1 ICC2 25 10 mA mA With no signal MUTEX = "L"
(Note 6) The rated values of items above indicate average performances of the device, which largely depend on circuit layouts, components, and power supplies. The reference values are those applicable to the device and components directly installed on a board specified by us.
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2/15
2009.06 - Rev.A
BD5427EFS
Electrical characteristic curves (Reference data) (1) Under Stereo Operation(RL=8) .
100 10 THD+N (%) 1 0.1 0.01 0.001
1kHz 100Hz Vcc=12V RL=8 BW=2020kHz
Technical Note
100 10 THD+N (%)
6kHz
1 0.1 0.01
Vcc=12V RL=8 Po=1W BW=2020kHz
0.01
0.1
1
10
100
10
100
1000
10000
100000
OUTPUT POWER (W) Fig. 1 THD+N Output power
FREQUENCY (Hz)
Fig. 2 THD+N Frequency
40 35 VOLTAGE GAIN (dB) 25 20 15 10 5 0 10 100 1000 FREQUENCY (Hz) 10000 100000 CROSSTALK (dB) 30 Vcc=12V RL=8 Po=1W L=33 H C=0.47 F C=0.1 F
0 -20 -40 -60 -80 -100 10 100 1000 FREQUENCY (Hz) 10000 100000 Vcc=12V RL=8 Po=1W BW=2020kHz
Fig. 3 Voltage gain - Frequency
Fig. 4 Crosstalk - Frequency
0 CROSSTALK (dB) -20 -40 -60 -80 -100 0.001
Vcc=12V RL=8 fin=1kHz BW=2020kHz
20 15 10 5 0 8
0.01
0.1
1
10
100
OUTPUT POWER (W)
RL=8 fin=1kHz THD=10%
10
OUTPUT POWER (W)
12 14 VCC (V)
16
18
Fig. 5
Crosstalk - Output power
Fig. 6
Output power - Power supply voltage
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3/15
2009.06 - Rev.A
BD5427EFS
Electrical characteristic curves (Reference data) - Continued .
Technical Note
100 90 80 70 60 50 40 30 20 10 0 0 5 10
Vcc=10V RL=8 fin=1kHz
100 90 80 70 60 50 40 30 20 10 0 0 5 10
EFFICIENCY (%)
EFFICIENCY (%)
Vcc=12V RL=8 fin=1kHz
15
20
15
20
OUTPUT POWER (W/ch)
Fig. 7 Efficiency - Output power
OUTPUT POWER (W/ch)
Fig. 8 Efficiency - Output power
100 90 80 70 60 50 40 30 20 10 0 0
3
EFFICIENCY (%)
2 ICC (A) Vcc=10V 1
Vcc=12V
Vcc=16.5V
Vcc=16.5V RL=8 fin=1kHz
RL=8 fin=1kHz 0
5 10 OUTPUT POWER (W/ch)
15
0
5
10
15
20
25
30
35
40
TOTAL OUTPUT POWER (W)
Fig. 9 Efficiency - Output power
Fig. 10 Current consumption - Output power
100 90 80 70 60 50 40 30 20 10 0 8
0
RL=8 Without signal
-20 NOISE FFT (dBV) -40 -60 -80 -100 -120 -140 10 100
ICC (mA)
Vcc=12V RL=8 Without signal BW=2020kHz
Sampling Mute
10
12
14 VCC (V)
16
18
1000
10000
100000
FREQUENCY (Hz)
Fig. 12 FFT of Output Noise Voltage
Fig. 11 Current consumption - Power supply voltage
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4/15
2009.06 - Rev.A
BD5427EFS
Electrical characteristic curves (Reference data) - Continued .
Technical Note
MUTEX Pin 20
1 0 V/div
Vcc=12V RL = 8 Po=500 m W
MUTEX Pin 20
1 0 V/div
Vcc=12V RL = 8 Po=500 m W
TM Pin 2 6
5 V/div
fi n = 5 0 0 H z
TM Pin 26
5 V / div
fi n = 5 0 0 H z
2 V/div Speaker output 1 0 m s e c/ div
Speaker output
2 V / div
1 0 m s e c/ div
Fig. 13 Wave form when Releasing Soft-mute
Fig. 14 Wave form when Activating Soft-mute
VCCA VHOLD Pin 27 TM Pin 26 5V/div
VCCA Vcc=12V RL =8 Po=500mW TM fin=3kHz Pin 26 VHOLD Pin 27 5V/div Vcc=12V RL =8 Po=500mW fin=3kHz
5V/div
5V/div
Speaker output
2V/div
Speaker output 2msec/div
2V/div
20msec/div
Fig. 15 Wave form on Instantaneous Power Interruption (20msec / div)
Fig. 16 Wave form on Instantaneous Power Interruption (2msec / div)
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5/15
2009.06 - Rev.A
BD5427EFS
Electrical characteristic curves (Reference data) (2) Under Stereo Operation(RL=6) .
25 20 15 10 5 0 8 10 12 14 VCC (V) 16 18
RL=6 fin=1kHz THD=10%
Technical Note
OUTPUT POWER (W)
Fig. 17 Output power - Power supply voltage
100 90 80 70 60 50 40 30 20 10 0 0
Vcc=10V RL=6 fin=1kHz
100 90 80 70 60 50 40 30 20 10 0 0
EFFICIENCY (%)
EFFICIENCY (%)
Vcc=12V RL=6 fin=1kHz
5 10 15 OUTPUT POWER (W/ch)
Fig. 18 Efficiency - Output power
20
5 10 15 OUTPUT POWER (W/ch)
20
Fig. 19 Efficiency - Output power
100 90 80 70 60 50 40 30 20 10 0 0
4 3 Vcc=12V ICC (A) 2 1 0
5 10 15 OUTPUT POWER (W/ch) 20
EFFICIENCY (%)
Vcc=16.5V
Vcc=10V RL=6 fin=1kHz 0 5 10 15 20 25 30 35 40
Vcc=16.5V RL=6 fin=1kHz
TOTAL OUTPUT POWER (W)
Fig. 21 Current consumption - Output power
Fig. 20 Efficiency - Output power
Dotted lines of the graphs indicate continuous output power to be obtained on musical signal source or by installing additional heat sinks.
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6/15
2009.06 - Rev.A
BD5427EFS
Pin Assignment
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IN1 1 2 N.C. GND A FIL A PW M 1 PW M 2 FIL P V CCA N.C. 3 4 N.C. 5 N.C. 6 7 8 9 DRI VER 1P 10 11 12 13 14 15 16 17 W ARNING ERROR M UTEX 18 19 20 W A RN ING ERROR M ute Control N.C. 21 N.C. N.C. 22 N.C. Protections & Logic Under V ol tage Protection H igh Temperature Protection Power-off Detector Sof t M ute Ramp Generator Output Short Protection Output DC V ol tage Protection Clock Control N.C. N.C. N.C. N.C. BSP1P V CCP1P 44 IN2 43 GND A 42 FIL A 41 FIL P 40 V CCA 39 BSP2P 38 V CCP2P 37 V CCP2P 36 OUT2P DRI VER 2P 35 OUT2P 34 GND P2 33 GND P2 32 OUT2N DRI VER 1N DRI VER 2N 31 OUT2N 30 V CCP2N 29 V CCP2N 28 BSP2N 27 V HOL D 26 TM 25 ROSC 24 M S 23 OSC
Fig. 23
Outer Dimensions and Inscriptions
(c) 2009 ROHM Co., Ltd. All rights reserved.
Fig. 22
V CCP1P OU T1P OU T1P GNDP1 GNDP1 OU T1N OU T1N V CCP1N V CCP1N BSP1N
BD5427EFS
Top View
Pin Assignment Diagram
Outer Dimensions and Inscriptions of HTSSOP-A44 Package
7/15 Type
Lot No.
2009.06 - Rev.A
Technical Note
BD5427EFS
Explanation of Pin Functions (Provided pin voltages are typical values.) No. Symbol Pin voltage Pin description
Technical Note
Internal equalizing circuit
40
1 44
IN1 IN2
3.5V
ch1 Analog signal input pin ch2 Analog signal input pin Input audio signal via a capacitor.
20k 1/44
43
6
BSP1P
-
ch1 positive bootstrap pin Coccect a capacitor
7 ,8
7, 8
VCCP1P
Vcc
ch1 positive power system power supply pin
6
9,1 0
9, 10
OUT1P
Vcc to 0V
ch1 positive PWM signal output pin Connect with output LPF.
1 1 ,1 2
11, 12
GNDP1
0V
ch1 power system GND pin
1 5 ,1 6
13, 14
OUT1N
Vcc to 0V
ch1 negative PWM signal output pin Connect with output LPF
17
1 3 ,1 4
15, 16
VCCP1N
Vcc
ch1 negative power system power supply pin
1 1 ,1 2
17
BSP1N
-
ch1 negative bootstrap pin Connect a capacitor.
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8/15
2009.06 - Rev.A
BD5427EFS
Explanation of Pin Functions - continued No. Symbol Pin voltage Pin description
Technical Note
Internal equalizing circuit
40
Warning output pin H: 5V L: 0V Pin to notify operation warning. H: Under warning L: Normal operation Connect a resister.
43 2k 18
18
WARNING
40
Error output pin H: 5V L: 0V A pin for notifying operation errors. H: Error L: Normal operation Connect a resister.
43 2k 19
19
ERROR
40
Audio mute control pin 20 MUTEX 20
120k
43
2, 3 4, 5 21, 22
N.C.
-
N.C. pin Nothing is connected with IC internal circuit.
40
Sampling clock signal input/output pin 23 OSC When using two or more sampling clocks, connect via a capacitor.
23
43
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9/15
2009.06 - Rev.A
80k
H: Mute off L: Mute on
BD5427EFS
Explanation of Pin Functions - continued No. Symbol Pin voltage Pin description
Technical Note
Internal equalizing circuit
40
Master/Slave switching pin
120k
24
MS
-
Switching of master/slave functions on a sampling clock signal. H: Slave operation L: Master operation
24 80k 43
40
Internal PWM sampling clock frequency setting pin 25 ROSC 5.6V Usually the pin is used open. To adjust an internal sampling clock frequency, connect a resister.
25 32k 43
40 26 43
Audio muting constant setting pin 26 TM 0 to 5V Connect a capacitor.
40
Instantaneous power interruption detecting voltage setting pin 27 VHOLD 0.68xVcc Connect a capacitor. To adjust a detecting voltage, connect a resister.
27
43
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10/15
390k
180k
2009.06 - Rev.A
BD5427EFS
Explanation of Pin Functions - continued No. 28 Symbol BSP2N Pin voltage Pin description ch2 negative bootstrap pin Connect a capacitor.
Technical Note
Internal equalizing circuit
29,30
28
29, 30
VCCP2N
Vcc
ch2 negative power system power supply pin ch2 negative PWM signal output pin
31,32
31, 32
OUT2N
Vcc to 0V Connect an output LPF.
33, 34
GNDP2
0V
ch2 power system GND pin ch2 positive PWM signal output pin
33,34
37,38
35, 36
OUT2P
Vcc to 0V Connect an output LPF.
39
37, 38
VCCP2P
Vcc
ch2 positive power system power supply pin
35,36
ch2 positive bootstrap pin 39 BSP2P Connect a capacitor.
33,34
40
VCCA
Vcc
Analog system power pin
40
41
FILP
Vcc+35 12
PWM system bias pin
41
Connect a capacitor.
43
40
Analog signal system bias pin 42 FILA 3.5V Connect a capacitor.
42
43
43
GNDA
0V
Analog system power supply pin
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11/15
2009.06 - Rev.A
BD5427EFS
Application Circuit Diagram
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C44 1 N.C. 2 N.C. GNDA FI L A C42 C43 C41 C40 PW M 1 PW M 2 FIL P V CCA V CCA N.C. 39 C39 38 37 C37 C38 36 35 C35 34 33 C31 GNDP 13 DRI VER 1N DRI VER 2N 14 C15 15 16 17 18 R18 19 R19 20 N.C. 21 N.C. N.C. 22 N.C. M ute Control ERROR W ARNING Protections & Logi c Under V ol tage Protection High Temperature Protection Power-off Detector Soft M ute Ramp Generator 32 31 C29 30 29 C28 28 27 26 25 OPEN SL A V E Output Short Protection Output DC V ol tage Protection 24 Clock Control C23 23 CLK I /O M A STER L31 L35 V CCP 40 41 42 N.C. N.C. 3 4 5 6 C6 7 8 C7 C8 9 DRI VER 1P DRI VER 2P 10 11 12 43 N.C. N.C. N.C. GND A 44 INPUT ch-2
Vcc=10V to 16.5V
(c) 2009 ROHM Co., Ltd. All rights reserved.
C32 SP ch2 C17 GNDD C27 C26
IN PU T ch-1
C1
Fig. 24
V CCP
L9
C9
C10
Circuit Diagram of Stereo Operation with 8 Load
12/15
SP ch1
W A RNING OUTPU T
ERROR OU TPUT
C13
GNDP
L13
M UTE
2009.06 - Rev.A
Technical Note
BD5427EFS
Table 1 BOM List of Stereo Operation with 8 Load
Configuration No. 1 2 3 4 5 6 7 8 9 10 11 12 Item IC C C C C C C C C C C R Part Number BD5427EFS Vendor mm inch 0.68F 0.1F 0.1F 2.2F 0.47F 3.3F 0.1F 1F 10F 10F 100k ROHM HTSSOP-A44 0805 0603 0805 1210 1210 0805 0603 0805 0805 2626 0402 Value Rated voltage 25V 50V 50V 25V 50V 25V 25V 16V 16V 25V 50V Tolerance 10% 10% 10% 20% 20% 10% 10% 10% 10% 20% 1% Temperature Quantity characteristics 10% 10% 10% 5% 5% 10% 10% 10% 10% 25% 200ppm/ 1 4 5 4 2 2 1 2 1 1 3 2
Technical Note
Reference IC1 C6, C17, C28, C39 C7, C15, C29, C37, C40 C9, C13, C31, C35 C1, C44 C10, C32 C27 C23, C26 C41 C42 C8, C38, C43 R18, R19
GRM219B31E684KA88D MURATA 2012 GRM188R11H104KA93 MURATA 1608 GRM21BB11H104KA01 MURATA 2012 25ST225M3216 50ST474M3225 Rubycon 3225 Rubycon 3225
GRM21BB31E335KA75 MURATA 2012 GRM188B11E104KA GRM21BB11C105KA MURATA 1608 MURATA 2012
GRM21BB31C106KE15 MURATA 2012 25SVPD10M MCR01MZPF1003 SANYO ROHM 6666 1005
Configuration No. 13 Item L Part Number 7G09B-330M Vendor mm SAGAMI 10x9x10 33Hx2 20% Value Tolerance
DC Resistance 52mmax.
Rated DC Current 2.0A max.
Quantity 2
Reference L9, L13, L31, L35
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13/15
2009.06 - Rev.A
BD5427EFS
Technical Note
Notes on Usage 1. About absolute maximum ratings If an applied voltage or an operating temperature exceeds an absolute maximum rating, it may cause destruction of a device. A result of destruction, whether it is short mode or open mode, is not predictable. Therefore, provide a physical safety measure such as fuse, against a special mode that may violate conditions of absolute maximum ratings. 2. About power supply line As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between power supply and GND as a electric pathway for the regenerated current. Be sure that there is no problem with each property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the connected power supply does not have sufficient current absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a voltage clamp diode between the power supply and GND pins. 3. Potential of GND (11, 12, 33, 34, and 43 pins) Potential of the GND terminal must be the lowest under any operating conditions. 4. About thermal design Perform thermal design with sufficient margins, in consideration of maximum power dissipation Pd under actual operating conditions. This product has an exposed frame on the back of the package, and it is assumed that the frame is used with measures to improve efficiency of heat dissipation. In addition to front surface of board, provide a heat dissipation pattern as widely as possible on the back also. A class-D power amplifier has heat dissipation efficiency far higher than that of conventional analog power amplifier and generates less heat. However, extra attention must be paid in thermal design so that a power dissipation Pdiss should not exceed the maximum power dissipation Pd. Tjmax - Ta Tjmax: Maximum temperature junction = 150[] W Pd Maximum power dissipation ja Ta: Operating ambient temperature [] ja: Package thermal resistance [/W] 1 Po: Output power [W] Pdiss PO - 1 W Power dissipation : Efficiency 5. About operations in strong electric field Note that the device may malfunction in a strong electric field. 6. Thermal shutdown (TSD) circuit This product is provided with a built-in thermal shutdown circuit. When the thermal shutdown circuit operates, the output transistors are placed under open status. The thermal shutdown circuit is primarily intended to shut down the IC avoiding thermal runaway under abnormal conditions with a chip temperature exceeding Tjmax = 150, and is not intended to protect and secure an electrical appliance. Accordingly, do not use this circuit function to protect a customer's electrical appliance. 7. About shorting between pins and installation failure Be careful about direction and displacement of an LSI when installing it onto the board. Faulty installation may destroy the LSI when the device is energized. In addition, a foreign matter getting in between LSI pins, pins and power supply, and pins and GND may cause shorting and destruction of the LSI. 8. About power supply startup and shutdown When starting up a power supply, be sure to place the MUTEX pin (pin 20) at "L" level. When shutting down a power supply also, be sure to place the pin at "L" level. Those processes reduce pop noises generated upon turning on and off the power supply. In addition, all power supply pins must be started up and shut down at the same time. 9. About WARNING output pin (pin 18) and ERROR output pin (pin 19) A WARNING flag is output from the WARNING output pin upon operation of the high-temperature protection function and under-voltage protection function. And an ERROR flag is output from the ERROR output pin upon operation of VCC/GND shorting protection function and speaker DC voltage applying protection function. These flags are the function which the condition of this product is shown in. The use which aimed at the protection except for this product is prohibition. 10. About N.C. pins (pins 2, 3, 4, 5, 21 and 22) The N.C. (Non connection) pins are not connected with an internal circuit. Leave the pins open or connect them to GND.
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14/15
2009.06 - Rev.A
BD5427EFS
Ordering part number
Technical Note
B
Part No BD
D
5
Part No. 5427
4
2
7
E
F
S
-
E
2
Package EFS: HTSSOP-A44
Packaging and forming specification E2: Embossed tape and reel
HTSSOP-A44
18.50.1 (MAX 18.85 include BURR) (6.0)
44 23

+6 4 -4
Tape Quantity
1.00.2
Embossed carrier tape (with dry pack) 1500pcs E2
The direction is the 1pin of product is at the upper left when you hold
9.50.2
7.50.1
0.50.15
Direction of feed
(5.0)
( reel on the left hand and you pull out the tape on the right hand
)
1
0.85
1PIN MARK
22
+0.05 0.17 -0.03 S
1.0MAX
0.08 S
0.850.05
0.080.05
0.8
+0.05 0.37 -0.04
0.08
M
1pin (Unit : mm) Reel
Direction of feed
Order quantity needs to be multiple of the minimum quantity.
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15/15
2009.06 - Rev.A
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
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