Daewoo 2898ST Service Manual page 31

TDA1519B (BTL or STEREO audio amplifier)
(1) Features
Requires very few external
components for Bridge Tied Load
(BTL)
Stereo or BTL application
High output power
Low offset voltage at output (important for BTL)
Fixed gain
Good ripple rejection
Mute/stand-by switch
Load dump protection
SC and DC short-circuit-safe to ground and VP
(2) General Description
The TDA1519B is an integrated class-B dual output amplifier in a 9-lead single in-line (SIL) plastic medium
power package. The device is primarily developed for car radio applications.
(3) Block Diagram
1
60k
V A
183
18.1 k
stand–by
switch
V A
15k
x1
3
15k
18.1 k
183
9 V A
60k
+
input
mute switch
reference
voltage
signal
ground
2
mute switch
C m
power stage
Vp
+
–
stand–by
reference
voltage
+
mute
+
switch
–
mute
reference
voltage
TDA1519B
power stage
C m
power
Vp
ground
(substrate)
7 5
Thermally protected
Reverse polarity safe
Capability to handle high energy on outputs (VP
= 0 V)
No switch-on/switch-off plop
Protected against electrostatic discharge
Identical inputs (inverting and non-inverting)
Compatible with TDA1519A (except output
power)
(4) Pin Description
PIN NAME
1 NINV
2 GND1
3 RR
4
4 OUT1
5 GND2
6 OUT2
7 Vp
8
8 M/SS
9 INV
6
31
DESCRIPTION
non-inverting input
ground (signal)
supply voltage ripple
rejection
output 1
ground (substrate)
output 2
positive supply voltage
mute/stand-by switch
inverting input