TS4997IQT STMicroelectronics, TS4997IQT Datasheet - Page 23

• Manufacturer Part Number: TS4997IQT
• Description: IC AMP AUDIO 1W STER AB 16QFN
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS4997IQT

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 1W x 2 @ 8 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: 3D, Depop, Differential Inputs, Standby, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5995-2

TS4997
4.7
Table 9.
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:
Load voltage and current are sinusoidal (V
Supply voltage is a pure DC source (V
P
diss
3D effect level
= P
MEDIUM
HIGH
3D effect settings
LOW
OFF
supply
- P
out
(W)
P
P
supply
diss
I
ccAVG
P
=
= V
V
out
I
out
out
2 2V
---------------------- P
CC
π R
=
= 2
= V
=
V
-------------------- - (W)
I
CC
ccAVG
V
------------ - (A)
peak
2R
3D0
CC
L
R
V
---------------- - (A)
peak
out
0
0
1
1
)
πR
L
peak
L
out
2
L
(W)
sinωt (V)
out
and I
–
P
out
out
(
)
W
)
Application information
3D1
0
1
0
1
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