NTE1396
Integrated Circuit
20W Bridge Booster for Car Radio
Description:
The NTE1396 is a Class B dual audio power amplifier specifically designed for car radio applications.
Power booster amplifiers are easily designed using this device that provides a high current capability
(up to 3.5A) and that can drive very low impedance loads obtaining an output power of more than 20W.
The NTE1396 has high reliability and guarantees complete safety during operation due to protection
against:
D
Output DC and AC Short Circuit to GND or Across the Head
D
Overrating Chip Temperature (+150
C)
D
Polarity Inversion
D
Load Dump Voltage Surge
D
Fortuitous Open GND
D
Very Inductive Loads
Absolute Maximum Ratings:
Operating Supply Voltage, V
S
18V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Supply Voltage, V
S
28V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak Supply Voltage (for 50ms), V
S
40V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Peak Current (Note 1), I
O
NonRepetitive (t = 0.1ms)
4.5A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repetitive (f
>
10Hz)
3.5A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +60
C), P
tot
30W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature Range, T
J
40
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
40
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Thermal Resistance, JunctiontoCase, R
thJC
3
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Max output current is internally limited.
Electrical Characteristics: (T
A
= +25
C, G
v
= 50dB, R
th(HS)
= 4
C/W, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
Supply Voltage
V
S
8
18
V
Output Offset Voltage
V
OS
V
S
= 14.4V
150
mV
(Between Pin8 & Pin10)
V
S
= 13.2V
150
mV
Total Quiescent Drain Current
I
d
V
S
= 14.4V, R
L
= 4
75
150
mA
V
S
= 13.2V, R
L
= 3.2
70
160
mA
Output Power
P
O
d = 10%,
V
S
= 14.4V, R
L
= 4
18
20
W
f = 1kHz
V
S
= 14.4V, R
L
= 3.2
20
22
W
V
S
= 13.2V, R
L
= 3.2
17
19
W
Distortion
d
f = 1kHz
V
S
= 14.4V, R
L
= 4
,
P
O
= 50mW to 15W
1
%
V
S
= 13.2V, R
L
= 3.2
,
P
O
= 50mW to 13W
1
%
Input Sensitivity
V
i
R
L
= 4
f = 1kHz, P
O
= 2W
9
mV
R
L
= 3.2
8
mV
Input Resistance
R
i
f = 1kHz
70
k
Low Frequency Roll Off (3.2
)
f
L
R
L
= 3.2
40
Hz
High Frequency
f
H
R
L
= 3.2
20
kHz
Closed Loop Voltage Gain
G
v
f = 1kHz
50
dB
Total Input Noise Voltage
e
N
R
g
= 10K
, Note 2
3
10
V
Supply Voltage Rejection
SVR
R
g
= 10K
, C
4
= 10
F, f
ripple
= 100Hz,
V
ripple
= 0.5V
45
55
dB
Efficiency
V
S
= 14.4V ,
P
O
= 20W, R
L
= 4
60
%
f = 1kHz
P
O
= 22W, R
L
= 3.2
60
%
V
S
= 13.2V, f = 1kHz, P
O
= 19W, R
L
= 3.2
58
%
Thermal ShutDown Case
Temperature
T
sd
V
S
= 14.4V, R
L
= 4
, f = 1kHz, P
tot
= 13W
100
110
C
Output Voltage with One Side of
V
OSH
V
S
= 14.4V, R
L
= 4
2
V
the Speaker Shorted to GND
V
S
= 13.2V, R
L
= 3.2V
2
V
Note 2. Bandwidth filter 22Hz to 22kHz
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