TOSHIBA TB2901HQ

TB2901HQ(O)
TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic
TB2901HQ
Maximum Power 47 W BTL × 4-ch Audio Power IC
The TB2901HQ is 4-ch BTL audio amplifier for car audio
applications.
This IC can generate higher power: POUT MAX = 47 W as it
includes the pure complementary P-ch and N-ch DMOS output
stage.
It is designed to yield low distortion ratio for 4-ch BTL audio
power amplifier, built-in standby function, muting function, and
various kinds of protectors.
Additionally, high-side switch is built in.
Weight: 7.7 g (typ.)
Features
•
High power output
: POUT MAX (1) = 47 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUT MAX (2) = 43 W (typ.)
(VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 Ω)
POUT MAX (3) = 80 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 2 Ω)
: POUT (1) = 29 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
: POUT (2) = 25 W (typ.)
(VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
•
Low distortion ratio: THD = 0.015% (typ.)
(VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 Ω)
•
Low noise: VNO = 90 µVrms (typ.)
(VCC = 13.2 V, Rg = 0 Ω, BW = 20 Hz~20 kHz, RL = 4 Ω)
•
Built-in standby switch function (pin 4)
•
Built-in muting function (pin 22)
•
Built-in high-side switch function (pin 25)
•
Built-in various protection circuits:
•
Operating supply voltage: VCC (opr) = 9~18 V (RL = 4 Ω)
Thermal shut down, overvoltage, out to GND, out to VCC, out to out short
Note 1: Since this device’s pins have a low withstanding voltage, please handle it with care.
Note 2: Install the product correctly. Otherwise, it may result in break down, damage and/or degradation to the
product or equipment.
Note 3: These protection functions are intended to avoid some output short circuits or other abnormal conditions
temporarily. These protect functions do not warrant to prevent the IC from being damaged.
In case of the product would be operated with exceeded guaranteed operating ranges, these protection
features may not operate and some output short circuits may result in the IC being damaged.
Note 4: The protection circuit may operate not correctly in case of the use of large phase-shift type speaker.
Therefore, it should be confirmed that there is no problem on actual evaluation or mass-production board.
Especially, it is necessary to be ware such a behavior when the large phase-shift type 2ohm load, which is
a kind of sub-woofer for example, is connected to this IC, though such kind of speaker use is not
recommended.
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TB2901HQ(O)
20
VCC1
6
VCC2
OUT1 (+)
C1
11
PW-GND1 8
OUT2 (+)
12
RL
3
15
14
17
IN3
PW-GND3 18
OUT4 (+)
RL
19
21
IN4
PW-GND4 24
OUT4 (−)
PRE-GND
5
16 AC-GND
OUT3 (−)
C1
7
PW-GND2 2
OUT3 (+)
C1
RL
IN2
OUT2 (−)
C6
9
IN1
OUT1 (−)
C1
C3
1
TAB
C5
Block Diagram
RL
23
13
RIP
STBY
H-SW
MUTE
10
4
25
22
5V
C4
C2
PLAY
R1
MUTE
: PRE-GND
: PW-GND
Note5: Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for
explanatory purpose.
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TB2901HQ(O)
Caution and Application Method
(Description is made only on the single channel.)
1. Voltage Gain Adjustment
This IC has no NF (negative feedback) Pins. Therefore, the voltage gain can not be adjusted, but it makes
the device a space and total costs saver.
Amp. 2A
Amp. 1
Input
Amp. 2B
Figure 1
Block Diagram
The voltage gain of amp.1
: GV1 = 0dB
The voltage gain of amp.2A, B
: GV2 = 20dB
The voltage gain of BTL connection : GV (BTL) = 6dB
Therefore, the total voltage gain is decided by expression below.
GV = GV1 + GV2 + GV (BTL) = 0 + 20 + 6 = 26dB
2. Standby SW Function (pin 4)
By means of controlling pin 4 (standby pin) to
High and Low, the power supply can be set to ON
and OFF. The threshold voltage of pin 4 is set at
about 3VBE (typ.), and the power supply current is
about 2 µA (typ.) in the standby state.
VCC
ON
Power
OFF
Control Voltage of Pin 4: VSB
Standby
Power
VSB (V)
ON
OFF
0~1.5
OFF
ON
3.5~6 V
4
10 kΩ
≈ 2 VBE
to BIAS
CUTTING CIRCUIT
When changing the time constant of pin 4, check the
pop noise.
Figure 2 With pin 4 set to High,
Power is turned ON
Advantage of Standby SW
(1)
(2)
Since VCC can directly be controlled to ON or OFF by the microcomputer, the switching relay can be
omitted.
Since the control current is microscopic, the switching relay of small current capacity is satisfactory
for switching.
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TB2901HQ(O)
Relay
Large current capacity switch
Battery
Battery
VCC
From
microcomputer
VCC
– Conventional Method –
Small current capacity switch
Battery
From microcomputer
Battery
Stand-By VCC
Stand-By VCC
– Standby Switch Method –
Figure 3
3. Muting Function (pin 22)
Audio muting function is enabled when pin 22 is Low. When the time constant of the muting function is
determined by R1 and C4, it should take into account the pop noise. The pop noise which is generated when
the power or muting function is turned ON/OFF will vary according to the time constant. (Refer to Figure 4
and Figure 5.)
The pin 22 is designed to operate off 5 V.
Moreover, this terminal (pin 22) serves as the source switch of current of an internal mute circuit. And it is
designed so that the discharge current of this terminal (pin 22) may serve as 200 µA. The outside pull-up
resistor R1 is determind on the basic of this value.
ex) When control voltage is changed in to 6 V from 5 V.
6 V/5 V × 47 k = 56 k
To obtain enough mute attenuation, a series resistor, R1 at pin 22 should be 47 kΩ or more.
ATT – VMUTE
20
VCC = 13.2 V
f = 1kHz
Mute attenuation ATT
(dB)
0
5V
R1
22
C4
1 kΩ
Mute ON/OFF
control
RL = 4 Ω
VOUT = 20dBm
−20
−40
−60
−80
−100
−120
0
0.5
1
1.5
2
2.5
3
Pin 22 control voltage: VMUTE (V)
Figure 4
Muting Function
Figure 5
4
Mute Attenuation − VMUTE (V)
2004-10-15
TB2901HQ(O)
4. High-Side Switch
Pin 25 of this device is used in concerned with VCC as a high-side switch which operates with the standby
pin. Thus, both the power amp IC and the connected external unit (the hideaway unit) can be turned
ON/OFF by using of the standby switch.
5. Pop Noise Suppression
Since the AC-GND pin (pin 16) is used as the NF pin for all amps, the ratio between the input
capacitance (C1) and the AC-to-GND capacitance (C6) should be 1:4.
Also, if the power is turned OFF before the C1 and C6 batteries have been completely charged, pop noise
will be generated because of the DC input umbalance.
To counteract the noise, it is recommended that a longer charging time be used for C2 as well as for C1
and C6. Note that the time which audio output takes to start will be longer, since the C2 makes the muting
time (the time from when the power is turned ON to when audio output starts) is fix.
The pop noise which is generated when the muting function is turned ON/OFF will vary according to the
time constant of C4.
The greater the capacitance, the lower the pop noise. Note that the time from when the mute control
signal is applied to C4 to when the muting function is turned ON/OFF will be longer.
6. External Component Constants
Component Recommended
Name
Value
Effect
Purpose
Lower than recommended
value
Higher than recommended
value
C1
0.22 µF
To eliminate DC
Cut-off frequency is
increased
Cut-off frequency is reduced
C2
10 µF
To reduce ripple
Powering ON/OFF is faster
Powering ON/OFF takes
longer
C3
0.1 µF
To provide
sufficient
oscillation margin
Reduces noise and provides sufficient oscillation margin
C4
1 µF
To reduce pop
noise
High pop noise. Duration until Low pop noise. Duration until
muting function is turned
muting function is turned
ON/OFF is short
ON/OFF is long
C5
3900 µF
Ripple filter
Power supply ripple filtering
C6
1 µF
NF for all outputs
Pop noise is suppressed when C1:C6 = 1:4
Notes
Pop noise is
generated when
VCC is ON
Pop noise is
generated when
VCC is ON
Note6: If recommended value is not used.
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TB2901HQ(O)
Maximum Ratings (Ta = 25°C)
Characteristics
Symbol
Rating
Unit
VCC (surge)
50
V
DC supply voltage
VCC (DC)
25
V
Operation supply voltage
VCC (opr)
18
V
Peak supply voltage (0.2 s)
Output current (peak) RL=4Ω
IO (peak)
9
Output current (peak) RL=2Ω
IO (peak)-2
6.3
Power dissipation
PD (Note 6)
125
W
A
Operation temperature
Topr
−40~85
°C
Storage temperature
Tstg
−55~150
°C
Note 7: Package thermal resistance θj-T = 1°C/W (typ.) (Ta = 25°C, with infinite heat sink)
The absolute maximum ratings of a semiconductor device are a set of specified parameter values, which must not
be exceeded during operation, even for an instant. If any of these rating would be exceeded during operation, the
device electrical characteristics may be irreparably altered and the reliability and lifetime of the device can no
longer be guaranteed. Moreover, these operations with exceeded ratings may cause break down, damage and/or
degradation to any other equipment. Applications using the device should be designed such that each maximum
rating will never be exceeded in any operating conditions. Before using, creating and/or producing designs, refer to
and comply with the precautions and conditions set forth in this documents.
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TB2901HQ(O)
Electrical Characteristics
(unless otherwise specified, VCC = 13.2 V, f = 1 kHz, RL = 4 Ω, Ta = 25°C)
Characteristics
Quiescent current
Output power
Total harmonic distortion
Symbol
Test
Circuit
ICCQ
⎯
POUT MAX (1)
Test Condition
Min
Typ.
Max
Unit
VIN = 0
⎯
200
400
mA
⎯
VCC = 14.4 V, max POWER
⎯
47
⎯
POUT MAX (2)
⎯
VCC = 13.7 V, max POWER
⎯
43
⎯
POUT MAX (3)
⎯
⎯
80
⎯
POUT (1)
⎯
VCC = 14.4 V, THD = 10%
⎯
29
⎯
POUT (2)
⎯
THD = 10%
23
25
⎯
THD
⎯
POUT = 5 W
⎯
0.015
0.15
%
VCC = 14.4 V, RL =2Ω
max POWER
Voltage gain
GV
⎯
VOUT = 0.775 Vrms
24
26
28
dB
Voltage gain ratio
∆GV
⎯
VOUT = 0.775 Vrms
−1.0
0
1.0
dB
VNO (1)
⎯
Rg = 0 Ω, DIN45405
⎯
100
⎯
VNO (2)
⎯
Rg = 0 Ω, BW = 20 Hz~20 kHz
⎯
90
200
Ripple rejection ratio
R.R.
⎯
frip = 100 Hz, Rg = 620 Ω
Vrip = 0.775 Vrms
50
60
⎯
dB
Cross talk
C.T.
⎯
Rg = 620 Ω
VOUT = 0.775 Vrms
⎯
70
⎯
dB
VOFFSET
⎯
⎯
−150
0
150
mV
RIN
⎯
⎯
⎯
90
⎯
kΩ
µA
Output noise voltage
Output offset voltage
Input resistance
Standby current
Standby control voltage
Mute control voltage
Mute attenuation
µVrms
ISB
⎯
Standby condition
⎯
2
10
VSB H
⎯
POWER: ON
3.5
⎯
6.0
VSB L
⎯
POWER: OFF
0
⎯
1.5
VM H
⎯
MUTE: OFF
3.0
⎯
6.0
VM L
⎯
MUTE: ON, R1 = 47 kΩ
0
⎯
0.5
ATT M
⎯
MUTE: ON
VOUT = 7.75 Vrms→Mute: OFF
80
90
⎯
dB
IO
⎯
400
⎯
⎯
mA
∆Vo
⎯
⎯
0.25
0.6
V
V
V
High-Side Switch
Output current
Difference voltage between VCC and
output
IO = 400 mA, +B = 9.6 V
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TB2901HQ(O)
6
VCC2
OUT1 (+)
0.22 µF
C1
11
PW-GND1 8
OUT2 (+)
C1
12
9
IN1
OUT1 (−)
0.22 µF
C3
0.1 µF
20
VCC1
3900 µF
1
TAB
C5
Test Circuit
RL
7
5
IN2
PW-GND2 2
OUT2 (−)
RL
3
1 µF
C6
16 AC-GND
OUT3 (+)
0.22 µF
C1
15
IN3
PW-GND3 18
OUT3 (−)
OUT4 (+)
0.22 µF
C1
14
RL
19
21
IN4
PW-GND4 24
OUT4 (−)
RL
23
13
H-SW
MUTE
4
25
22
C4
1 µF
STBY
10
10 µF
RIP
C2
PRE-GND
17
5V
47 kΩ
PLAY
R1
MUTE
: PRE-GND
: PW-GND
Components in the test circuits are only used to obtain and confirm the device characteristics.
These components and circuits do not warrant to prevent the application equipment from malfunction or failure.
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TB2901HQ(O)
THD – POUT (ch1)
THD – POUT (ch2)
100
100
V
= 13.2 V
VCC
CC = 13.2 V
50 RL = 4 Ω
RL = 4 Ω
測定 ch のみ入力
30 Filter
VCC = 13.2 V
50
RL = 4 Ω
30 Filter
Filter
100 Hz : ~30 kHz
100 Hz :: ~300
kHz kHz
1kHz
400 Hz~30
10
1kHz
400 Hz~
Hz~30 kHz
10 kHz :: 400
100 Hz : ~30 kHz
1kHz
10
: 400 Hz~30 kHz
10 kHz : 400 Hz~
20 kHz : 400 Hz~
10 kHz
kHz :: 400
400 Hz~
Hz~
20
30 kHz : 400 Hz~
(%)
5
3
1
Total harmonic distortion THD
Total harmonic distortion THD
(%)
5
20 kHz
0.5
0.3
10 kHz
0.1
0.05
0.03
3
1
20 kHz
0.5
0.3
10 kHz
0.1
0.05
0.03
1 kHz
1 kHz
0.01
0.01
f = 100 Hz
f = 100 Hz
0.005
0.005
0.003
0.003
0.001
0.1
0.3 0.5
1
3
Output power
5
10
POUT
30 50
0.001
0.1
100
0.3 0.5
(W)
THD – POUT (ch3)
5
10
POUT
30 50
100
30 50
100
(W)
THD – POUT (ch4)
100
VCC = 13.2 V
VCC = 13.2 V
50
50
RL = 4 Ω
30 Filter
RL = 4 Ω
30 Filter
100 Hz : ~30 kHz
10
1kHz
100 Hz : ~30 kHz
: 400 Hz~30 kHz
10
10 kHz : 400 Hz~
1kHz
: 400 Hz~30 kHz
10 kHz : 400 Hz~
20 kHz : 400 Hz~
5
(%)
5
3
Total harmonic distortion THD
(%)
3
Output power
100
Total harmonic distortion THD
1
20 kHz
1
0.5
0.3
10 kHz
0.1
0.05
0.03
20 kHz : 400 Hz~
3
1
20 kHz
0.5
0.3
10 kHz
0.1
0.05
0.03
1 kHz
1 kHz
0.01
0.01
f = 100 Hz
f = 100 Hz
0.005
0.005
0.003
0.001
0.1
0.003
0.3 0.5
1
3
Output power
5
10
POUT
30 50
0.001
0.1
100
(W)
0.3 0.5
1
3
Output power
9
5
10
POUT
(W)
2004-10-15
TB2901HQ(O)
THD – POUT (ch1)
THD – POUT (ch2)
100
50
30
100
VCC = 13.2 V
50
RL = 4 Ω
f = 1 kHz
30
13.2 V
Filter
10
400 Hz~30 kHz
10
13.2 V
400 Hz~30 kHz
(%)
5
3
Total harmonic distortion THD
(%)
Total harmonic distortion THD
RL = 4 Ω
f = 1 kHz
Filter
5
1
0.5
VCC = 9.0 V
0.3
16.0 V
0.1
0.05
0.03
3
1
0.5
0.05
0.03
0.005
0.005
0.003
0.003
1
3
Output power
5
10
POUT
30 50
0.001
0.1
100
0.3 0.5
(W)
THD – POUT (ch3)
30
VCC = 13.2 V
50
RL = 4 Ω
f = 1 kHz
30
13.2 V
10
POUT
30 50
100
(W)
VCC = 13.2 V
RL = 4 Ω
f = 1 kHz
13.2 V
Filter
400 Hz~30 kHz
10
400 Hz~30 kHz
(%)
5
3
Total harmonic distortion THD
(%)
Total harmonic distortion THD
5
THD – POUT (ch4)
5
1
0.5
VCC = 9.0 V
0.3
16.0 V
0.1
0.05
0.03
3
1
0.5
0.05
0.03
0.005
0.005
0.003
0.003
1
3
Output power
5
10
POUT
30 50
0.001
0.1
100
(W)
0.3 0.5
1
3
Output power
10
16.0 V
0.1
0.01
0.3 0.5
VCC = 9.0 V
0.3
0.01
0.001
0.1
3
100
Filter
10
1
Output power
100
50
16.0 V
0.1
0.01
0.3 0.5
VCC = 9.0 V
0.3
0.01
0.001
0.1
VCC = 13.2 V
5
10
POUT
30 50
100
(W)
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TB2901HQ(O)
muteATT – f
R.R. – f
0
0
VCC = 13.2 V
(dB)
−20
R.R.
RL = 4 Ω
VOUT = 20dBm
−40
Ripple rejection ratio
Mute attenuation muteATT (dB)
VCC = 13.2 V
−20
−60
−80
1 ch ~4ch
−100
RL = 4 Ω
RG = 620 Ω
Vrip =0dBm
−40
4ch
−60
1ch
3ch
−120
10
100
1k
10 k
frequency f
2ch
−80
10
100 k
100
1k
(Hz)
frequency f
GV – f
10 k
100 k
10 k
100 k
(Hz)
THD – f
40
3
20
Total harmonic distortion THD
GV (dB)
30
Voltage gain
(%)
VCC = 13.2 V
1 ch ~4ch
VCC = 13.2 V
10
RL = 4 Ω
VOUT = 0dBm
0
10
100
1k
frequency f
10 k
1
0.3
(Hz)
No filter
0.1
0.03
2ch
4ch
0.01
3ch
1ch
0.003
0.001
10
100 k
RL = 4 Ω
POUT = 5 W
100
1k
frequency f
11
(Hz)
2004-10-15
TB2901HQ(O)
VIN – POUT (ch1)
VIN – POUT (ch2)
40
40
1 kHz
1 kHz
30
100 Hz
Output power POUT (W)
Output power POUT (W)
100 Hz
10 kHz
f = 20 kHz
20
VCC = 13.2 V
10
RL = 4 Ω
No filter
0
0
2
4
Input voltage
6
8
30
f = 20 kHz
20
VCC = 13.2 V
10
RL = 4 Ω
No filter
0
0
10
10 kHz
2
VIN (Vrms)
4
Input voltage
VIN – POUT (ch3)
10
VIN (Vrms)
40
1 kHz
1 kHz
100 Hz
Output power POUT (W)
100 Hz
Output power POUT (W)
8
VIN – POUT (ch4)
40
10 kHz
30
f = 20 kHz
20
VCC = 13.2 V
10
RL = 4 Ω
No filter
0
0
6
2
4
Input voltage
6
8
30
VIN (Vrms)
f = 20 kHz
20
VCC = 13.2 V
10
RL = 4 Ω
No filter
0
0
10
10 kHz
2
4
Input voltage
12
6
8
10
VIN (Vrms)
2004-10-15
TB2901HQ(O)
C.T. – f (ch1)
C.T. – f (ch2)
0
0
−20
VCC = 13.2 V
RL = 4 Ω
VOUT = 0dBm
Cross talk C.T. (dB)
Cross talk C.T. (dB)
VCC = 13.2 V
RG = 620 Ω
−40
ch2
−60
−20
RL = 4 Ω
VOUT = 0dBm
RG = 620 Ω
−40
−60
ch1
ch3
ch3
ch4
ch4
−80
10
100
1k
frequency f
10 k
−80
10
100 k
100
(Hz)
frequency f
C.T. – f (ch3)
100 k
(Hz)
0
VCC = 13.2 V
VCC = 13.2 V
RL = 4 Ω
VOUT = 0dBm
Cross talk C.T. (dB)
Cross talk C.T. (dB)
10 k
C.T. – f (ch4)
0
−20
1k
RG = 620 Ω
−40
ch1
ch2
−60
−20
RL = 4 Ω
VOUT = 0dBm
RG = 620 Ω
−40
−60
ch1
ch2
ch4
ch3
−80
10
100
1k
frequency f
10 k
−80
10
100 k
(Hz)
100
1k
frequency f
13
10 k
100 k
(Hz)
2004-10-15
TB2901HQ(O)
VNO – Rg
PD – POUT
80
f = 1 kHz
RL = 4 Ω
Filter
RL = 4 Ω
4ch drive
(W)
VCC = 13.2 V
~20 kHz
Power dissipation PD
Output noise voltage VNO
(µVrms)
300
200
1ch~4ch
100
18 V
60
16 V
40
13.2 V
20
9.0 V
0
10
100
1k
10 k
0
0
100 k
10
Signal source resistance Rg (Ω)
Output power
POUT
25
(W)
120
Allowable power dissipation PD MAX (W)
(mA)
Quiscent current ICCQ
20
PD MAX – Ta
ICCQ – VCC
400
RL = ∞
VIN = 0
300
200
100
0
0
15
(1) INFINITE HEAT SINK
RθJC = 1°C/W
(2) HEAT SINK (RθHS = 3.5°C/W)
100
RθJC + RθHS = 4.5°C/W
(3) NO HEAT SINK
80
RθJA = 39°C/W
(1)
60
40
20
(2)
(3)
0
10
Supply voltage
20
VCC
0
30
(V)
25
50
75
Ambient temperature
14
100
125
150
Ta (°C)
2004-10-15
TB2901HQ(O)
Package Dimensions
Weight: 7.7 g (typ.)
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2004-10-15
TB2901HQ(O)
About solderability, following conditions were confirmed
• Solderability
(1) Use of Sn-63Pb solder Bath
· solder bath temperature = 230°C
· dipping time = 5 seconds
· the number of times = once
· use of R-type flux
(2) Use of Sn-3.0Ag-0.5Cu solder Bath
· solder bath temperature = 245°C
· dipping time = 5 seconds
· the number of times = once
· use of R-type flux
RESTRICTIONS ON PRODUCT USE
030619EBF
• The information contained herein is subject to change without notice.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of
TOSHIBA or others.
• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
• The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
• The products described in this document are subject to the foreign exchange and foreign trade laws.
• TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced
and sold, under any law and regulations.
• This product generates heat during normal operation. However, substandard performance or malfunction may
cause the product and its peripherals to reach abnormally high temperatures.
The product is often the final stage (the external output stage) of a circuit. Substandard performance or
malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the
product.
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2004-10-15