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參數(shù)資料
| 型號(hào)： | UTCTDA2030 |
| 廠商： | 友順科技股份有限公司 |
| 元件分類： | 音頻放大器 |
| 英文描述： | Single Audio Amplifier |
| 中文描述： | 單音頻放大器 |
| 文件頁(yè)數(shù)： | 13/13頁(yè) |
| 文件大小： | 182K |
| 代理商： | UTCTDA2030 |
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UTC TDA2030
SHORT CIRCUIT PROTECTION
The UTC TDA2030 has an original circuit which limits the current of the output transistors. This function can be
considered as being peak power limiting rather than simple current limiting. It reduces the possibility that the device
gets damaged during an accidental short circuit from AC output to Ground.
THERMAL SHUT-DOWN
The presence of a thermal limiting circuit offers the following advantages:
1).An overload on the output (even if it is permanent),or an above limit ambient temperature can be easily supported
since the Tj can not be higher than 150
°
C
2).The heatsink can have a smaller factor of safety compared with that of a congenital circuit, There is no possibility
of device damage due to high junction temperature increase up to 150, the thermal shut-down simply reduces the
power dissipation and the current consumption.
APPLICATION SUGGESTION
The recommended values of the components are those shown on application circuit of Fig.14. Different values can
be used. The following table can help the designer.
COMPONENT
RECOMMENDED
VALUE
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
13
QW-R107-004,B
PURPOSE
LARGE THAN
RECOMMENDED
VALUE
Increase of Gain
LARGE THAN
RECOMMENDED
VALUE
Decrease of Gain
R1
22K
Closed loop gaon
setting.
Closed loop gaon
setting.
Non inverting input
biasing
Frequency stacility
R2
680
Decrease of Gain
Increase of Gain
R3
22K
Increase of input
impedance
Danger of oscillation
at high frequencies
with inductive loads.
Poor high frequencies
attenuation
Decrease of input
impedance
R4
1
R5
≈
3R2
Upper frequency
cutoff
Input DC decoupling
Dange of oscillation
C1
1
μ
F
Increase of low
frequencies cutoff
Increase of low
frequencies cutoff
Dange of oscillation
C2
22
μ
F
Inverting DC
decoupling
Supply voltage
bypass
Supply voltage
bypass
Frequency stability
Upper frequency
cutoff
To protect the device
against output voltage
spikes.
C3,C4
0.1
μ
F
C5,C6
100
μ
F
Dange of oscillation
C7
C8
0.22
μ
F
≈
1/(2
π
*B*R1)
Larger bandwidth
Larger bandwidth
smaller bandwidth
D1,D2
1N4001
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