TDA7299 Datasheet, PDF (3/7 Pages) STMicroelectronics – SOUND 2W MONO AMPLIFIER

TDA7299
ELECTRICAL CHARACTERISTICS (continued)
(T_amb = 25°C; V_S = 12V; R_L = 8Ω; f = 1KHz; unless otherwise specified.)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
P_{ot Transient Output Power} ^*)
V_i = 400mVp, THD < 2%, R_L = 4Ω
2
W
THD Distortion
P_O = 1W
1
%
SVR Supply Voltage Rejection
V_ripple = 150mVrms;
F_ripple = 1KHz
50
dB
E_I Input Noise Voltage
Rg = 10KΩ; BW = 20Hz to 20KHz
1.5
5
µV
V_sb Stand-By Enable Voltage
*) Limited by the R_TH of the package
1
V
Figure 1. Application Circuit
IN
STAND-BY
0.1µF
IN
SVR
47µF
V_S
GND
V_S
100µF
470µF
OUT
8Ω
V_S=12V
IN
STAND-BY
0.1µF
IN
SVR
47µF
GND
470µF
OUT
8Ω
D94AU161A
APPLICATION HINTS:
For 12V supply and 8Ω speaker application, its maximum power dissipation is about 1.8W.
Assumming that max ambient temperature is 70°C. required thermal resistance of the device and heat dissipat-
ing means must be equal to (150 - 70)/1.8 = 45°C/W.
Junction to pin thermal resistance of the package is about 20°C/W. That means external heat sink of about
25°C/W is required.
Cu ground plane of PCB can be used as heat dissipating means.
Stand-By switches must be able to discharge C_svr current.
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