NTE7053
Integrated Circuit
22W Bridge–Stereo Amplifier
for Car Radio
Description:
The NTE7053 is an audio power amplifier is a 11–Lead Staggered SIP type package designed for car
radio applications.
Thanks to the fully complementary PNP/NPN output configuration, the high performance of this de-
vice is obtained without bootstrap capacitors.
A delay turn–on mute circuit eliminates audible ON/OFF noise, and a novel short circuit protection
system prevents spurious intervention with highly inductive loads.
Features:
D
Few External Components
D
No Boucherot Cells
D
No Bootstrap Capacitors
D
High Output Power
D
No Switch ON/OFF Noise
D
Very Low Stand–by Current
D
Fixed Gain (30dB Stereo)
D
Programmable Turn–On Delay
Protections:
D
Output AC–DC Short Circuit to GND and to
Supply Voltage
D
Very Inductive Loads
D
Loudspeaker Protection
D
Overrating Chip Temperature
D
Load Dump Voltage
D
Fortuitous Open Ground
Absolute Maximum Ratings:
Operating Supply Voltage, V
S
18V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Supply Voltage, V
S
28V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak Supply Voltage (for t = 50ms), V
S
40V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Peak Current (Non–Repetitive for t = 100
µ
s), I
O
5A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Peak Current (Repetitive Frequency > 10Hz), I
O
4A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +85
°
C), P
tot
36W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction Temperature Range, T
J
–40
°
to +150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
–40
°
to +150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Thermal Resistance, Junction–to–Case, R
thJC
1.8
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
°
C, V
S
= 14.4V, f = 1kHz unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
Supply Voltage Range
V
S
8
–
18
V
Total Quiescent Drain Current
I
d
Stereo Configuration
–
–
120
mA
Stand–By Attenuation
A
SB
60
80
–
dB
Stand–By Current
I
SB
–
–
100
µ
A
Thermal Shut–Down Junction Temperature
T
sd
–
150
–
°
C
Stereo
Output Power (Each Channel)
P
O
d = 10%
R
L
= 2
Ω
–
11
–
W
R
L
= 3.2
Ω
7
8
–
W
R
L
= 4
Ω
–
8.5
–
W
d = 10%,
R
L
= 2
Ω
–
9
–
W
V
S
= 13.2V
R
L
= 3.2
Ω
–
6.5
–
W
R
L
= 4
Ω
–
5.5
–
W
Distortion
d
P
O
= 0.1W to 4W, R
L
= 3.2
Ω
–
–
0.5
%
Supply Voltage Rejection
SVR
R
S
= 10k
Ω
,
C3 = 22
µ
F
45
50
–
dB
f = 100Hz
C3 = 100
µ
F
–
57
–
dB
Crosstalk
CT
f = 1kHz
45
55
–
dB
f = 10kHz
–
50
–
dB
Input Resistance
R
I
30
50
–
k
Ω
Voltage Gain
G
V
27
29
31
dB
Voltage Gain Match
G
V
–
–
1
dB
Input Noise Voltage
E
IN
Note 1
R
S
= 50
Ω
–
2
–
µ
V
R
S
= 10k
Ω
–
2.7
7
µ
V
Bridge
Output Power (Each Channel)
P
O
d = 10%
R
L
= 3.2
Ω
16
22
–
W
R
L
= 4
Ω
–
20
–
W
d = 10%,
R
L
= 3.2
Ω
–
19
–
W
V
S
= 13.2V
R
L
= 4
Ω
–
17.5
–
W
Distortion
d
P
O
= 0.1W to 4W, R
L
= 4
Ω
–
–
1
%
Output Offset Voltage
V
OS
–
–
250
mV
Supply Voltage Rejection
SVR
R
S
= 10k
Ω
,
C3 = 22
µ
F
45
50
–
dB
f = 100Hz
C3 = 100
µ
F
–
57
–
dB
Input Resistance
R
I
–
50
–
k
Ω
Voltage Gain
G
V
33
35
37
dB
Input Noise Voltage
E
IN
Note 1
R
S
= 50
Ω
–
2.7
–
µ
V
R
S
= 10k
Ω
–
3.2
–
µ
V
Note 1. 22Hz to 22kHz
