TDA7052BT NXP Semiconductors, TDA7052BT Datasheet - Page 4

• Manufacturer Part Number: TDA7052BT
• Manufacturer: NXP Semiconductors

Specifications of TDA7052BT

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono
• Output Power (typ): 0.55x1@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.3@8Ohm@250mW%
• Single Supply Voltage (typ): 5/9/12/15V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 800mW
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 4.5V
• Single Supply Voltage (max): 18V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SO
• Lead Free Status / Rohs Status: Compliant

NXP Semiconductors
FUNCTIONAL DESCRIPTION
The TDA7052B and TDA7052BT are mono BTL output
amplifiers with DC volume control which have been
designed for use in TV and monitors but are also suitable
for use in battery-fed portable recorders and radios.
In conventional DC volume circuits the control or input
stage is AC coupled to the output stage via external
capacitors to keep the offset voltage low. In the TDA7052B
and TDA7052BT the DC volume control stage is integrated
into the input stage so that no coupling capacitors are
required. With this configuration, a low offset voltage is
maintained and the minimum supply voltage remains low.
The BTL principle offers the following advantages:
• Lower peak value of the supply current
• The frequency of the ripple on the supply voltage is twice
Consequently, a reduced power supply with smaller
capacitors can be used which results in cost reductions.
For portable applications there is a trend to decrease the
supply voltage, resulting in a reduction of output power at
conventional output stages. Using the BTL principle
increases the output power.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
THERMAL CHARACTERISTICS
1997 Aug 15
V
V
I
I
P
T
T
T
T
R
ORM
OSM
SYMBOL
SYMBOL
the signal frequency.
amb
stg
vj
sc
P
2, 4
tot
Mono BTL audio amplifier with DC volume
control
th j-a
supply voltage
input voltage pins 2 and 4
repetitive peak output current
non-repetitive peak output current
total power dissipation
operating ambient temperature
storage temperature
virtual junction temperature
short-circuit time
thermal resistance from junction to ambient in free air
TDA7052B
TDA7052BT
TDA7052B
TDA7052BT
PARAMETER
PARAMETER
4
T
amb
The maximum gain of the amplifier is fixed at 40.5 dB.
The DC volume control stage has a logarithmic control
characteristic. Therefore, the total gain can be controlled
from 40.5 dB to −33 dB. If the DC volume control voltage
falls below 0.4 V, the device will switch to the mute mode.
The amplifier is short-circuit proof to ground, V
across the load. Also a thermal protection circuit is
implemented. If the crystal temperature rises above
+150 °C the gain will be reduced, thereby reducing the
output power. Special attention is given to switch-on and
switch-off clicks, low HF radiation and a good overall
stability.
Power dissipation
Assume for the TDA7052B that V
The maximum sine wave dissipation is 0.9 W.
The R
Therefore T
Assume for the TDA7052BT that V
The maximum sine wave dissipation is 0.46 W.
The R
Therefore T
CONDITIONS
≤ 25 °C
th j-a
th j-a
of the package is 100 K/W.
of the package is 155 K/W.
amb(max)
amb(max)
= 150 − 100 × 0.9 = 60 °C.
= 150 − 155 × 0.46 = 78 °C.
−
−
−
−
−
−
−40
−55
−
−
MIN.
VALUE
100
155
18
5
1.25
1.5
1.25
0.8
+85
+150
+150
1
P
P
= 6 V; R
MAX.
= 6 V; R
Product specification
TDA7052B
L
L
= 8 Ω.
UNIT
V
V
A
A
W
W
°C
°C
°C
h
K/W
K/W
P
= 16 Ω.
and
UNIT