STEVAL-CCA003V1 STMicroelectronics, STEVAL-CCA003V1 Datasheet - Page 21

• Manufacturer Part Number: STEVAL-CCA003V1
• Description: BOARD EVAL FOR LV TS4984IQT
• Manufacturer: STMicroelectronics

Specifications of STEVAL-CCA003V1

• Design Resources: STEVAL-CCA003V1 Gerber Files
• Amplifier Type: Class AB
• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 1W x 2 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: TS4984
• Description/function: Audio Amplifiers
• Operating Supply Voltage: 2.2 V to 5.5 V
• Output Power: 1 W
• Product: Audio Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: TS4984
• Kit Application Type: Amplifier
• Application Sub Type: Stereo Audio Power Amplifier
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: TS4984
• Other names: 497-6396; STEVAL-CCA003V1

Application Information
Then, the power dissipated by each amplifier is:
and the maximum value is obtained when:
and its value is:
Note:
The efficiency, η, is the ratio between the output power and the power supply:
The maximum theoretical value is reached when V
The TS4984 has two independent power amplifiers, and each amplifier produces heat due to its power
dissipation. Therefore, the maximum die temperature is the sum of the each amplifier’s maximum power
dissipation. It is calculated as follows:
In most cases, P
or, stated differently:
This maximum value is only depending on power supply voltage and load values.
diss L
P
P
diss R
= P
diss L
diss R
Total P
= Power dissipation due to the right channel power amplifier.
= Power dissipation due to the left channel power amplifier.
, giving:
P d iss
P
diss
diss
Total P
P
dissmax
=
Total P
=
η =
=
2 2 V
----------------------- -
4 2 V
----------------------- - P
π R
d iss
P
π
sup ply
∂P d iss
--------------------- = 0
-------------------- - =
P
∂P
diss
R
CC
L
P
supply
=
π
---- - = 78.5%
4
CC
L
=
o ut
out
= P
PEAK
------------ -
π
2V
⋅
2P
2
–
R
diss L
P
cc
2
dissL
out
P
L
out
= V
out
------------------------ -
π
–
4V
V
+ P
–
CC
2P
PEAK
P
CC
, so that:
out
diss R
(
out
W
(W)
(
)
W
)
(W)
(
(
W
W
)
)
TS4984
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