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TDA7253L
6W AMPLIFIER WITH MUTING
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TDA7253LSeptember 2004
1FEATURES 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
2DESCRIPTIONThe TDA7253L is class AB audio power amplifier
assembled in the Single in Line 10 pins Package.
6W AMPLIFIER WITH MUTING
Figure 2. Test and Application CircuitRev. 2
TDA7253L
Table 2. Absolute Maximum Ratings
Table 3. Thermal Data
Figure 3. Pin Connection (Top view)
Figure 4. Block Diagram
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TDA7253L
Table 4. ELECTRICAL CHARACTERISTCS(Refer to the test and application circuit, VS = 20V; RL = 8Ω; Gv = 30dB; f = 1KHz; Tamb = 25°C unless
otherwise specified).
Figure 6. Quiescent Current vs. Supply Voltage
TDA7253L
Figure 8. PC Board Component Layout
Figure 9. Evaluation Board Top Layer Layout
Figure 10. Evaluation Board Bottom Layer Layout
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TDA7253L 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) ·
Pdmax = 1 · ( 2.5 ) + 0.5 = 3W
(Heat Sinker)
In figure 8 is shown the Power derating curve for the device.
Figure 11. Power Derating Curve
TDA7253L
Figure 12. SIP10 Mechanical Data & Package Dimensions
