Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power
amplifier with loudspeaker protection
TDA1553Q
V
V
P1
P2
handbook, full pagewidth
3
10
1
mute switch
C
m
input 1
TDA1553Q
4
VA
output 1A
2
kΩ
PROTECTIONS
Load dump
Soar
18 kΩ
power stage
Thermal
Short - circuit
Reverse polarity
Loudspeaker
mute switch
C
m
6
VA
output 1B
60
kΩ
2
kΩ
18 kΩ
power stage
V
P
11
12
mute/stand-by
stand-by
switch
loudspeaker
protection
stand-by
reference
voltage
VA
15 kΩ
loudspeaker
protection
x1
mute
switch
15 kΩ
V
ref
13
mute switch
C
m
input 2
9
VA
output 2B
2
kΩ
18 kΩ
power stage
mute switch
C
m
7
VA
output 2A
60
kΩ
2
kΩ
V
ref
18 kΩ
power stage
2
5
GND1
8
MLB953
GND2
ground (signal)
power ground (substrate)
Fig.1 Block diagram.
3
July 1994
NXP [ NXP ]
