av2030 AVIC, av2030 Datasheet - Page 13

• Manufacturer Part Number: av2030
• Description: Linear Integrated Circuit
• Manufacturer: AVIC

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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 150qC
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
AV2030
C3,C4
C5,C6
D1,D2
R1
R2
R3
R4
R5
C1
C2
C7
C8
RECOMMENDED
|1/(2S*B*R1)
VALUE
1N4001
0.22PF
100PF
22K:
22K:
0.1PF
680:
|3R2
22PF
1PF
1:
LINEAR INTEGRATED CIRCUIT
against output voltage
To protect the device
Input DC decoupling
Non inverting input
Frequency stacility
Frequency stability
Closed loop gaon
Closed loop gaon
Upper frequency
Upper frequency
Supply voltage
Supply voltage
Inverting DC
PURPOSE
decoupling
setting.
setting.
biasing
bypass
bypass
spikes.
cutoff
cutoff
Poor high frequencies
Danger of oscillation
with inductive loads.
RECOMMENDED
at high frequencies
smaller bandwidth
Decrease of Gain
Increase of Gain
Increase of input
LARGE THAN
impedance
attenuation
VALUE
Dange of oscillation
Dange of oscillation
Dange of oscillation
RECOMMENDED
Decrease of input
frequencies cutoff
frequencies cutoff
Decrease of Gain
Larger bandwidth
Larger bandwidth
Increase of Gain
LARGE THAN
Increase of low
Increase of low
impedance
VALUE
QW-R107-004,B