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PDF TDA7253L Data sheet ( Hoja de datos )
| Número de pieza | TDA7253L | |
| Descripción | 6W AMPLIFIER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TDA7253L
6W AMPLIFIER WITH MUTING
1 FEATURES
■ WIDE SUPPLY VOLTAGE RANGE
■ 6W @ VS = 20V, RL = 8Ω, THD=10%
■ MUTE FACILITY (POP FREE) WITH LOW
CONSUMPTION
■ AC SHORT CIRCUIT PROTECTION
■ THERMAL OVERLOAD PROTECTION (150°C
2 DESCRIPTION
The TDA7253L is class AB audio power amplifier
assembled in the Single in Line 10 pins Package.
Figure 1. Package
SIP10
Table 1. Order Codes
Part Number
TDA7253L
Package
SIP10
Figure 2. Test and Application Circuit
=
MUTE
SW
R7 820
CSVR
100µF
3
+VS
C4
0.1µF
9
C5
470µF
TDA7253L
C2
5
IN
7
(L) 100nF
27K
4
CF
6 47µF
D02AU1429
C11 1000µF
R3
1.5K
R4
47
C9
0.1µF
R6
4.7
RL
September 2004
Rev. 2
1/8
Free Datasheet http://www.datasheet4u.com/
1 page  
TDA7253L
3 HEAT SINK DIMENSIONING:
In order to avoid the thermal protection intervention, that is placed approximatively at Tj = 150°C, it is important
the dimensioning of the Heat Sinker RTh (°C/W).
The parameters that influence the dimensioning are:
– Maximum dissipated power for the device (Pdmax)
– Max thermal resistance Junction to case (RTh j-c)
– Max. ambient temperature Tamb max
– Quiescent current Iq (mA)
3.1 Example:
VCC = 20V, Rload = 8ohm, RTh j-c = 9 °C/W , Tamb max = 50°C
Pdmax = (N° channels) · Π------22----V⋅---R-c---cl--o2---a---d- + Iq ⋅ Vcc
Pdmax = 1 · ( 2.5 ) + 0.5 = 3W
(Heat Sinker) RTh c-a = 1----5---0-----–P-----dT----am---m-a---xb-----m----a--x- – RTh j-c = 1----5---0---6--–-----5---0-- – 9 = 24.3°C /W
In figure 8 is shown the Power derating curve for the device.
Figure 11. Power Derating Curve
10
8
6
(c)
4
(d)
2
0
0 40
(a)
(b)
80
Tamb (°C)
120
a) Infinite Heatsink
b) 10 °C/ W
c) 15 °C/ W
d) 20 °C/ W
160
5/8
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet TDA7253L.PDF ] | |
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