UNISONIC TECHNOLOGIES CO., LTD
TDA2003
LINEAR INTEGRATED CIRCUIT
10W CAR RADIO AUDIO AMPLIFIER
DESCRIPTION
The UTC TDA2003 is a monolithic audio power amplifier
integrated circuit.
FEATURES
*Very Low External Component Required.
*High Current Output ( up to 3 A).
*Low Harmonic and Crossover Distortion.
*Built-in Over Temperature Protection.
*Short Circuit Protection Between all Pins.
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
TDA2003L-TA5-T
TDA2003G-TA5-T
TDA2003L-TB5-T
TDA2003G-TB5-T
TDA2003L-TB51-T
TDA2003G-TB51-T
Package
Packing
TO-220-5
TO-220B
TO-220B1
Tube
Tube
Tube
MARKING
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Copyright © 2016 Unisonic Technologies Co., Ltd
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UNISONIC TECHNOLOGIES CO., LTD
TDA2003
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
LINEAR INTEGRATED CIRCUIT
PIN NAME
Non inverting input
Inverting input
Ground
Output
Supply Voltage
BLOCK DIAGRAM
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ABSOLUTE MAXIMUM RATINGS (TA=25C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Peak Supply Voltage
VSS
40
V
DC Supply Voltage
VSS
28
V
Operating Supply Voltage
VSS
18
V
Repetitive
3.5
A
Output Peak Current
IO(PEAK)
Non Repetitive
4.5
A
Power Dissipation at TC= 90C
PD
20
W
Storage and Junction Temperature
TSTG
-40 ~ +150
C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
(TA=25C, Refer to the test circuit, VS=16V, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
DC CHARACTERISTICS
Supply Voltage
VSS
8
Quiescent Output Voltage
VOUT
6.1
Quiescent Drain Current
ID
AC CHARACTERISTICS
RL=4Ω
5.5
THD=10%,
RL=2Ω
9
Output Power
POUT
f=1kHz
RL=3.2Ω
RL=1.6Ω
POUT=0.5W, RL=4Ω
POUT=6W, RL=4Ω
Input Sensitivity
VI
f=1kHz
POUT=0.5W, RL=2Ω
POUT=10W, RL=2Ω
Input Saturation Voltage
VI(RMS)
300
Frequency Response(-3dB)
F
POUT=1W, RL=4Ω
40
POUT=0.05 ~ 4.5W, RL=4Ω
Total Harmonic Distortion
THD
f=1kHz
POUT=0.05 ~ 7.5W, RL=2Ω
Input Resistance(Pin 1)
RI
Open Loop, f=1kHz
70
Input Noise Current
iN
Input Noise Voltage
eN
f=1kHz
Open Loop Voltage Gain
Gvo
f=10kHz
Closed Loop Voltage Gain
Gvc
f=1kHz, RL=4Ω
39.3
POUT=6W, RL=4Ω
Efficiency, f=1kHz
η
POUT=10W, RL=2Ω
f=100Hz, VRUPPLE=0.5V
30
Supply Voltage Rejection
SVR
RG=10kΩ, RL=4Ω
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TYP
6.9
44
MAX UNIT
18
7.7
50
V
V
mA
6
10
7.5
12
14
55
10
50
W
mV
15000
0.15
0.15
150
60
1
80
60
40
69
65
36
mV
Hz
%
200
5
40.3
kΩ
pA
μV
dB
dB
dB
%
dB
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TEST CIRCUIT
100nF
AC Test Circuit
DC Test Circuit
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LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
20W Bridge Configuration Application
The Values of the capacitors C3 and C4 are different to optimize the SVR (Typ. 40dB)
TYPICAL APPLICATION CIRCUIT
Low Cost Bridge Configuration Application Circuit(POUT=18W)
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BUILT-IN PROTECTION SYSTEMS
LOAD DUMP VOLTAGE SURGE
The UTC TDA2003 has a circuit which enables it to withstand a voltage pulse train, on pin 5.
If the supply voltage peaks to more than 40V, then an LC filter must be inserted between the supply and pin 5, in
order to assure that the pulses at pin 5 will be head within the limits.
A suggested LC network. With this network, a train of pulses with amplitude up to 120V and width of 2ms can be
applied at point A. This type of protection is ON when the supply voltage(pulsed or DC) exceeds 18V. For this
reason the maximum operating supply voltage is 18V.
SHORT CIRCUIT (AC and DC Conditions)
The UTC TDA2003 can withstand a permanent short-circuit on the output for a supply voltage up to 16V.
POLARITY INVERSION
High current (up to 5A) can be handled by the device with no damage for a longer period than the blow-out time
of a quick 1A fuse(normally connected in series with the supply).
The feature is added to avoid destruction if, during fitting to the car, a mistake on connection of the supply is made.
OPEN GROUND
When the radio is in the ON condition and the ground is accidentally opened, a standard audio amplifier will be
damaged. On the UTC TDA2003 protection diodes are included to avoid any damage.
INDUCTIVE LOAD
A protection diode is provide between pin 4 and pin 5(see the internal schematic diagram) to allow use of the
UTC TDA2003 with inductive loads. In particular, the UTC TDA2003 can drive a coupling transformer for audio
modulation.
DC VOLTAGE
The maximum operating DC voltage on the UTC TDA2003 is 18V.
However the device can withstand a DC voltage up to 28V with no damage. This could occur during winter if two
batteries were series connected to crank the engine.
THERMAL SHUT-DOWN
The presence of a thermal limiting circuit offers the following advantages:
(1) An overload on the output (even if it is permanent),or an excessive ambient temperature can be easily withstood.
(2) The heat-sink can have a smaller factor compared with that of a conventional circuit. There is no device damage
in case of excessive junction temperature: all that happens is that Po ( and therefore PD) and Id are reduced.
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COMPONENTS USAGE SUGGESTION
The recommended values of the components are those shown on typical application circuit Different values can
be used. The following table can help the designer.
COMPONENT
R1
R2
RECOMMENDED
PURPOSE
VALUE
(Gv-1)×R2
gain setting.
2.2Ω
gain and SVR setting.
LARGE THAN
RECOMMENDED VALUE
Decrease of SVR
Danger of oscillation at high
Frequency stability
frequencies with inductive
loads.
Poor high frequencies
Upper frequency cutoff
attenuation
R3
1Ω
Rx
20R2
C1
2.2μF
Input DC decoupling
C2
C3
470μF
0.1μF
Ripple rejection
Supply voltage bypass
C4
1000μF
Supply voltage bypass
C5
0.1μF
Frequency stability
Cx
1/(2×B×R1)
Upper frequency cutoff
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Lower bandwidth
SMALLER THAN
RECOMMENDED VALUE
increase of drain current
Danger of oscillation
Noise at switch-on
switch-off
Decrease of SVR
Danger of oscillation
Higher low frequency
cutoff
Danger of oscillation at
high frequencies with
inductive loads.
Larger bandwidth
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TYPICAL CHARACTORISTICS
Quiescent output voltage vs.Supply
voltage
Quiescent drain current vs.Supply
voltage
8
80
6
60
4
40
2
20
0
0
8
10
12
14
16
8
10
12
VS (V)
14
16
VS (V)
Output power vs.load resistance
Output power vs.Supply voltage
Gv=40dB
f=1kHz
THD=10%
Gv=40dB
f=1kHz
THD=10%
16
20
VS=16V
R=1.6Ω
15
R=2Ω
10
R=3.2Ω
VS=14.4V
12
8
VS=12V
R=4Ω
VS=8V
4
5
0
0
0
5
10
15
20
0
2
VS(V)
52
58
52
48
44
44
40
POUT=6W
36
36
32
32
28
24
20
10
VS=14.4V
f=1kHz
RL=2Ω
54
48
40
8
Gain vs. Input sensitivity
VS=14.4V
f=1kHz
RL=4Ω
54
6
RL (Ω)
Gain vs. Input sensitivity
58
4
POUT=10W
28
POUT=0.5W
24
100
1000
VI (RMS) (mV)
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20
10
POUT=0.5W
100
1000
VI (RMS) (mV)
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TYPICAL CHARACTORISTICS (Cont.)
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PD (W)
η (%)
η (%)
PD (W)
SVR (dB)
SVR (dB)
THD (%)
THD (%)
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TYPICAL CHARACTORISTICS (Cont.)
Maximum allowable dissipation
and ambient temperature
20
20
15
15
RL=1.6Ω
10
PD (W)
PD (W)
Maximum Power dissipation and
supply voltage(sine wave operation)
infinite heatsink
10
RL=2Ω
RL=3.2Ω
5
0
RL=4Ω
0
5
10
15
20
Vs(V)
10°C/W
5
30°C/W
0
0
50
100
150
TA (°C)
200
Typical values of capacitor(Cx) for
different values of frequency response
100
B=10kHz
Cx (nF)
LINEAR INTEGRATED CIRCUIT
B=15kHz
10
B=20kHz
R2=2.2Ω
1
36
40
44
48
Gv (dB)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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