TDA2005R STMicroelectronics, TDA2005R Datasheet - Page 22

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TDA2005R

Manufacturer Part Number
TDA2005R
Description
IC AMP AUD 20W CLASS B DUAL
Manufacturer
STMicroelectronics
Type
Class Br
Datasheet

Specifications of TDA2005R

Output Type
1-Channel (Mono) or 2-Channel (Stereo)
Max Output Power X Channels @ Load
22W x 1 @ 3.2 Ohm; 12W x 2 @ 2 Ohm
Voltage - Supply
8 V ~ 18 V
Features
Short-Circuit and Thermal Protection
Mounting Type
Through Hole
Package / Case
Multiwatt-11 (Vertical, Bent and Staggered Leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Application information
4.1.7
4.1.8
22/25
Figure 37. Maximum allowable power dissipa-
Figure 39. Output power and drain current vs.
(W)
P
8
6
4
2
0
o
12
P
(W)
20
16
8
24
4
32
28
0
tot
-50
tion vs. ambient temperature
Thermal shut-down
The presence of a thermal limiting circuit offers the following advantages:
1.
2.
The maximum allowable power dissipation depends upon the size of the external heatsink
(i.e. its thermal resistance);
temperature for different thermal resistance.
Loudspeaker protection
The circuit offers loudspeaker protection during short circuit for one wire to ground.
case temperature (R
40
an overload on the output (even if it is permanent), or an excessive ambient
temperature can be easily withstood.
the heatsink can have a smaller factor of safety 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
0
P
I
d
o
80
50
120
100
V
R
f = 1 kHz
L
160
S
L
= 3.2 Ω)
= 13.2V
= 3.2Ω
T
T
o
amb
case
Figure 37
(and therefore P
(˚C)
(˚C)
1.2
0.9
0.6
0.3
Doc ID 1451 Rev 4
I
(A)
d
shows the power dissipation as a function of ambient
Figure 38. Output power and drain current vs.
tot
(W)
16
12
P
8
4
0
) and Id are reduced.
o
case temperature (R
40
P
I
d
o
80
120
V
R
f = 1 kHz
L
S
L
160
= 4Ω
= 14.4V
= 4 Ω)
T
case
TDA2005
(˚C)
1.2
0.9
0.6
0.3
I
(A)
d