TDA7052 Datasheet, PDF (4/8 Pages) NXP Semiconductors – 1 W BTL mono audio amplifier

Philips Semiconductors
1 W BTL mono audio amplifier
Product specification
TDA7052
FUNCTIONAL DESCRIPTION
The TDA7052 is a mono output amplifier designed for battery-fed portable audio applications, such as tape recorders
and radios.
The gain is fixed internally at 40 dB. A large number of tape recorders and radios are still designed for mono sound, plus
a space-saving trend by reduction of the number of battery cells. This means a decrease in supply voltage which results
in an reduction of output power. To compensate for this reduction, the TDA7052 uses the Bridge-Tied-Load principle
(BTL) which can deliver an output power of 1,2 W (THD = 10%) into an 8 Ω load with a power supply of 6 V. The load
can be short-circuited at each signal excursion.
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
SYMBOL
V_P
I_OSM
P_tot
T_c
T_stg
PARAMETER
Supply voltage
Non-repetitive peak output current
Total power dissipation
Crystal temperature
Storage temperature range
MIN.
MAX.
−
18
−
1,5
see Fig. 2
−
150
−55
+150
UNIT
V
A
°C
°C
Fig.2 Power derating curve.
POWER DISSIPATION
Assume V_P = 6 V; R_L = 8 Ω; T_amb = 50 °C maximum.
The maximum sinewave dissipation is 0,9 W.
R _{th j-a} = -1---5---00---_,--^–-9----5---0-- ≈ 110 K/W.
Where R_{th j-a} of the package is 110 K/W, so no external heatsink is required.
July 1994
4