TDA7057AQ Datasheet, PDF (5/16 Pages) NXP Semiconductors – 2 x 8 W stereo BTL audio output amplifier with DC volume control

Philips Semiconductors
2 × 8 W stereo BTL audio output amplifier
with DC volume control
Product specification
TDA7057AQ
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
V_P
I_ORM
I_OSM
P_tot
T_amb
T_stg
T_vj
t_sc
V_n
PARAMETER
supply voltage
repetitive peak output current
non-repetitive peak output current
total power dissipation
operating ambient temperature
storage temperature
virtual junction temperature
short-circuit time
input voltage pins 1, 3, 5 and 7
CONDITIONS
T_case < 60 °C
MIN.
−
−
−
−
−40
−55
−
−
−
MAX.
18
1.25
1.5
22.5
+85
+150
150
1
5
UNIT
V
A
A
W
°C
°C
°C
hr
V
THERMAL CHARACTERISTICS
SYMBOL
R_{th j-c}
R_{th j-a}
PARAMETER
thermal resistance from junction to case
thermal resistance from junction to ambient in free air
VALUE
4
40
Power dissipation
Assume V_P = 12 V and R_L = 16 Ω. The maximum sine wave dissipation is 2 × 1.8 W = 3.6 W.
At T_amb(max) = 60 °C:
R_{th tot} = (150 − 60)/3.6 = 25 K/W.
R_{th tot} = R_{th j-c} + R_{th c-hs} + R_{th hs}.
R_{th c-hs} + R_{th hs} = 25 − 4 = 21 K/W.
UNIT
K/W
K/W
1998 Apr 07
5