DATA SHEET
Product specification
Supersedes data of 1994 July
File under Integrated Circuits, IC01
1999 Aug 30
INTEGRATED CIRCUITS
TDA7073A; TDA7073AT
Dual BTL power driver
1999 Aug 30
2
Philips Semiconductors
Product specification
Dual BTL power driver
TDA7073A; TDA7073AT
FEATURES
No external components
Very high slew rate
Single power supply
Short-circuit proof
High output current (0.6 A)
Wide supply voltage range
Low output offset voltage
Suited for handling PWM signals up to 176 kHz
ESD protected on all pins.
GENERAL DESCRIPTION
The TDA7073A/AT are dual power driver circuits in a BTL
configuration, intended for use as a power driver for servo
systems with a single supply. They are specially designed
for compact disc players and are capable of driving focus,
tracking, sled functions and spindle motors.
Missing Current Limiter (MCL)
A MCL protection circuit is built-in. The MCL circuit is
activated when the difference in current between the
output terminal of each amplifier exceeds 100 mA (typical
300 mA). This level of 100 mA allows for headphone
applications (single-ended).
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
positive supply voltage range
3.0
5.0
18
V
G
v
voltage gain
32.5
33.5
34.5
dB
I
P
total quiescent current
V
P
= 5 V; R
L
=
-
8
16
mA
SR
slew rate
-
12
-
V/
s
I
O
output current
-
-
0.6
A
I
bias
input bias current
-
100
300
nA
f
co
cut-off frequency
-
3 dB
-
1.5
-
MHz
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA7073A
DIP16
plastic dual in-line package; 16 leads (300 mil); long body
SOT38-1
TDA7073AT
SO16
plastic small outline package; 16 leads; body width 7.5 mm
SOT162-1
1999 Aug 30
3
Philips Semiconductors
Product specification
Dual BTL power driver
TDA7073A; TDA7073AT
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
positive input 1
5
2
VP
1
16
I + i
13
I i
negative input 1
positive output 1
negative output 1
MCD382 - 1
positive input 2
6
TDA7073A
TDA7073AT
7
12
9
I + i
I i
negative input 2
10
positive output 2
negative output 2
14
ground 1
n.c.
ground 2
3, 4, 8, 11, 15
SHORT - CIRCUIT AND
THERMAL PROTECTION
1999 Aug 30
4
Philips Semiconductors
Product specification
Dual BTL power driver
TDA7073A; TDA7073AT
PINNING
SYMBOL
PIN
DESCRIPTION
IN1
-
1
negative input 1
IN1
+
2
positive input 1
n.c.
3
not connected
n.c.
4
not connected
V
P
5
positive supply voltage
IN2
+
6
positive input 2
IN2
-
7
negative input 2
n.c.
8
not connected
OUT2
+
9
positive output 2
GND2
10
ground 2
n.c.
11
not connected
OUT2
-
12
negative output 2
OUT1
-
13
negative output 1
GND1
14
ground 1
n.c.
15
not connected
OUT1
+
16
positive output 1
Fig.2 Pin configuration.
handbook, halfpage
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TDA7073A
TDA7073AT
OUT1+
GND1
P
V
n.c.
IN1
IN1+
n.c.
OUT1
OUT2
n.c.
GND2
OUT2 +
n.c.
n.c.
IN2
IN2 +
MCD381
FUNCTIONAL DESCRIPTION
The TDA7073A/AT are dual power driver circuits in a BTL
configuration, intended for use as a power driver for servo
systems with a single supply. They are particular designed
for compact disc players and are capable of driving focus,
tracking, sled functions and spindle motors.
Because of the BTL configuration, the devices can supply
a bi-directional DC current in the load, with only a single
supply voltage. The voltage gain is fixed by internal
feedback at 33.5 dB and the devices operate in a wide
supply voltage range (3 to 18 V). The devices can supply
a maximum output current of 0.6 A. The outputs can be
short-circuited over the load, to the supply and to ground
at all input conditions. The differential inputs can handle
common mode input voltages from ground level up to
(V
P
-
2.2 V with a maximum of 10 V). The devices have a
very high slew rate. Due to the large bandwidth, they can
handle PWM signals up to 176 kHz.
1999 Aug 30
5
Philips Semiconductors
Product specification
Dual BTL power driver
TDA7073A; TDA7073AT
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134).
Note
1. The outputs can be short-circuited over the load, to the supply and to ground at all input conditions.
THERMAL CHARACTERISTICS
Notes
1. TDA7073A: V
P
= 5 V; R
L
= 8
; The typical voltage swing = 5.8 V and V
loss
is 2.1 V therefore I
O
= 0.36 A and
P
tot
= 2
0.76 W = 1.52 W; T
amb (max)
= 150
-
1.52
50 = 74
C.
2. TDA7073AT: V
P
= 5 V; R
L
= 16
; typical voltage swing = 5.8 V and V
loss
is 2.1 V therefore I
O
= 0.18 A and
P
tot
= 2
0.38 W = 0.76 W; T
amb (max)
= 150
-
0.76
95 = 77
C.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
P
positive supply voltage range
-
18
V
I
ORM
repetitive peak output current
-
1
A
I
OSM
non repetitive peak output current
-
1.5
A
P
tot
total power dissipation
TDA7073A
T
amb
< 25
C
-
2.5
W
TDA7073AT
T
amb
< 25
C
-
1.32
W
T
stg
storage temperature range
-
55
+
150
C
T
vj
virtual junction temperature
-
150
C
T
sc
short-circuit time
see note 1
-
1
hr
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
R
th (j-a)
from junction to ambient
TDA7073A
in free air; note 1
50
K/W
TDA7073AT
in free air; note 2
95
K/W
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