Philips Semiconductors
2 x 22 W BTL stereo car radio power
amplifier with speaker protection
Product specification
TDA1557Q
FEATURES
• Requires very few external components
• High output power
• Low offset voltage at output
• Fixed gain
• Good ripple rejection
• Mute/stand-by switch
• Load dump protection
• AC and DC short-circuit-safe to ground and VP
• Thermally protected
• Reverse polarity safe
• Capability to handle high energy on outputs (VP = 0)
• Protected against electrostatic discharge
• No switch-on/switch-off plop
• Flexible leads
• Low thermal resistance.
GENERAL DESCRIPTION
The TDA1557Q is a monolithic integrated class-B output
amplifier in a 13-lead single-in-line (SIL) plastic power
package. The device contains 2 × 22 W amplifiers in BTL
configuration and has been primarily developed for car
radio applications.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
VP
positive supply voltage range
IORM
repetitive peak output current
Itot
Isb
Isw
ZI
TXTAL
total quiescent current
stand-by current
switch-on current
input impedance
crystal temperature
Stereo application
PO
SVRR
output power
supply voltage ripple rejection
∆VO
α
∆Gv
Gv
DC output offset voltage
channel separation
channel unbalance
closed loop voltage gain
CONDITIONS
operating
non-operating
load dump
THD = 10%; 4 Ω
RS = 0; f = 100 Hz to 10 kHz
MIN. TYP. MAX. UNIT
6.0 14.4 18
V
−
−
30
V
−
−
45
V
−
−
4
A
−
80
−
mA
−
0.1 100 µA
−
−
60
µA
25
−
−
kΩ
−
−
+150 °C
−
22
−
W
45
−
−
dB
−
−
250 mV
40
−
−
dB
−
−
1
dB
45
46
47
dB
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
TDA1557Q
PINS
13
Note
1. SOT141-6; 1996 August 23.
PACKAGE
PIN POSITION
DIL
MATERIAL
plastic
CODE
SOT141R
May 1992
2