STEVAL-CCA008V1 STMicroelectronics, STEVAL-CCA008V1 Datasheet - Page 23

• Manufacturer Part Number: STEVAL-CCA008V1
• Description: BOARD EVAL BASED ON TS4998
• Manufacturer: STMicroelectronics

Specifications of STEVAL-CCA008V1

• Amplifier Type: Class AB
• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 1W x 2 @ 8 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: TS4998
• Description/function: Audio Amplifiers
• Operating Supply Voltage: 2.7 V to 5.5 V
• Output Power: 1 W
• Product: Audio Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: TS4998
• 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: TS4998
• Other names: 497-8259

TS4998
4.6
Note:
Power dissipation and efficiency
Assumptions:
●
●
The output voltage is:
and
and
Therefore, the average current delivered by the supply voltage is:
Equation 3
The power delivered by the supply voltage is:
Equation 4
Therefore, the power dissipated by each amplifier is:
and the maximum value is obtained when:
and its value is:
Equation 5
This maximum value is only dependent on the power supply voltage and load values.
Load voltage and current are sinusoidal (V
Supply voltage is a pure DC source (V
P
diss
= P
supply
- P
out
(W)
P
P
supply
diss
I
ccAVG
Pdiss
P
=
= V
V
out
I
out
out
2 2V
---------------------- P
max
CC
π R
=
= 2
= V
=
∂Pdiss
-------------------- - = 0
V
-------------------- - (W)
I
∂P
CC
ccAVG
=
V
------------ - (A)
peak
2R
CC
L
R
V
---------------- - (A)
peak
out
2
out
)
πR
π
L
peak
Vcc
L
2
out
2
R
L
(W)
L
sinωt (V)
out
2
and I
(
W
–
P
)
out
out
(
)
W
)
Application information
23/33