TDA2009A STMicroelectronics, TDA2009A Datasheet - Page 9

• Manufacturer Part Number: TDA2009A
• Description: IC AMP AUDIO 12.5W MULTIWATT11
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA2009A

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 12.5W x 2 @ 4 Ohm
• Voltage - Supply: 8 V ~ 28 V
• Features: Short-Circuit and Thermal Protection
• Mounting Type: Through Hole
• Package / Case: Multiwatt-11 (Vertical, Bent and Staggered Leads)
• Amplifier Class: AB
• No. Of Channels: 2
• Output Power: 12.5W
• Supply Voltage Range: 8V To 28V
• Load Impedance: 4ohm
• Operating Temperature Range: -50°C To +150°C
• Amplifier Case Style: Multiwatt11
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2164-5

APPLICATION SUGGESTION
Figure 17 : P.C. BOARD and Components Layout of the Circuit of Figure 16 (1:1 scale)
(1) The closed loop gain must be higher than 26dB.
BUILD-IN PROTECTION SYSTEMS
THERMAL SHUT-DOWN
The presence of a thermal limiting circuit offers the
following advantages:
1) an averload on the output (even if it is
2) the heatsink can have a smaller factor of safety
The recommended values of the components are those shown on application circuit of fig. 1. Different
values can be used ; the following table can help the designer.
Component
C10, C11
perma nen t ), or an excessi ve ambient
temperature can be easily withstood.
compared with that of a conventional circuit.
There is no device damage in the case of
excessive junction temperature : all that
happens is that P
reduced.
R1, R3
R2, R4
R5, R6
C1, C2
C6, C7
C8, C9
C3
Recommended
1000 F to
2200 F
220 F
1.2k
Value
2.2 F
0.1 F
18k
22 F
o
1
(and therefore P
Input DC Decoupling High Turn-on Delay
Ripple Rejection
Feedback Input DC
Decoupling
Frenquency Stability
Output DC
Decoupling
Close Loop Gain
Setting (1)
Frequency Stability
Purpose
tot
) and I
o
are
Increase of Gain
Decrease of Gain
Danger of Oscillation at High
Frequency with Inductive Load
Better SVR. Increase of the
Switch-on Time
The maximum allowable power dissipation de-
pends upon the size of the external heatsink (i.e.
its thermal resistance); Figure 18 shows this dissi-
pable power as a function of ambient temperature
for different thermal resistance.
Short circuit (AC Conditions). The TDA2009A can
withstand an accidental short circuit from the output
and ground made by a wrong connection during
normal play operation.
Larger than
Decrease of Gain
Increase of Gain
High Turn-on Pop.
Higher Low Frequency
Cut-off. Increase of Noise
Degradation of SVR
Danger of Oscillation
Higher Low-frequency
Cut-off
Smaller than
TDA2009A
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