Philips tda1557 DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
TDA1557Q
2 x 22 W BTL stereo car radio
power amplifier with speaker
protection
Product specification
File under Integrated Circuits, IC01
May 1992
Philips Semiconductors Product specification
2 x 22 W BTL stereo car radio power
TDA1557Q
amplifier with speaker protection
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 V
P
• Thermally protected
• Reverse polarity safe
• Capability to handle high energy on outputs (VP = 0)
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
positive supply voltage range
operating 6.0 14.4 18 V
non-operating −−30 V
load dump −−45 V
IORM repetitive peak output current −−4A
I
tot
I
sb
I
sw
input impedance 25 −−kΩ
Z
I
T
XTAL
total quiescent current − 80 − mA
stand-by current − 0.1 100 µA
switch-on current −−60 µA
crystal temperature −−+150 °C
Stereo application
P
O
SVRR supply voltage ripple rejection R
DC output offset voltage −−250 mV
∆V
O
output power THD = 10%; 4 Ω−22 − W
= 0; f = 100 Hz to 10 kHz 45 −−dB
S
α channel separation 40 −−dB
channel unbalance −−1dB
∆G
v
G
v
closed loop voltage gain 45 46 47 dB
• 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.
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
PINS PIN POSITION MATERIAL CODE
PACKAGE
TDA1557Q 13 DIL plastic SOT141R
Note
1. SOT141-6; 1996 August 23.
May 1992 2
Philips Semiconductors Product specification
2 x 22 W BTL stereo car radio power
amplifier with speaker protection
handbook, full pagewidth
VA
18.1 kΩ
VA
18.1 kΩ
V
P
mute switch
mute switch
input 1
input
reference
voltage
1
30 kΩ
183 Ω
183 Ω
stand-by
12
switch
VA
CM
CM
TDA1557Q
POWER
STAGE
POWER
STAGE
stand-by
reference
voltage
TDA1557Q
10
3
V
P
4
output 1A
6
output 1B
11
mute/stand-by
input 2
13
reference
voltage
30 kΩ
input
signal ground
15 kΩ
x1
15 kΩ
183
Ω
183
Ω
2
18.1 kΩ
18.1 kΩ
mute switch
VA
mute switch
VA
mute
reference
voltage
CM
CM
mute
switch
POWER
STAGE
POWER
STAGE
loudspeaker
protection
58
power ground
MCD324 - 1
9
output 2B
7
output 2A
Fig.1 Block diagram.
May 1992 3
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