TDA2030A 查看數據表（PDF） - Unisonic Technologies
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TDA2030A Datasheet PDF : 14 Pages
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TDA2030A
LINEAR INTEGRATED CIRCUIT
SHORT CIRCUIT PROTECTION
The UTC TDA2030A 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°C, 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 TYPICAL AMPLIFIER
WITH SPLIT POWER SUPPLY. Different values can be used. The following table can help the designer.
LARGER THAN
SMALLER THAN
COMPONENT RECOMMENDED VALUE
PURPOSE
RECOMMENDED RECOMMENDED
VALUE
VALUE
R1
22KΩ
Closed loop gaon
setting.
Increase of Gain
Decrease of Gain
R2
680Ω
Closed loop gaon
setting.
Decrease of Gain
Increase of Gain
R3
22KΩ
Non inverting input
biasing
Increase of input
impedance
Decrease of input
impedance
Danger of oscillation
R4
1Ω
Frequency stability at high frequencies
with inductive loads.
R5
≈3R2
Upper frequency
Poor high frequencies Danger of oscillation
cutoff
attenuation
C1
1µF
Input DC decoupling
Increase of low
frequencies cutoff
C2
22µF
Inverting DC
decoupling
Increase of low
frequencies cutoff
C3,C4
0.1µF
Supply voltage bypass
Danger of oscillation
C5,C6
100µF
Supply voltage bypass
Danger of oscillation
C7
0.22µF
Frequency stability
Larger bandwidth
C8
≈1/(2π*B*R1)
Upper frequency
smaller bandwidth Larger bandwidth
cutoff
To protect the device
D1,D2
1N4001
against output voltage
spikes.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
14 of 14
QW-R107-005,C
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