IC AMP AUDIO PWR 1.2W MONO 8MSOP

TS4990IST

Manufacturer Part NumberTS4990IST
DescriptionIC AMP AUDIO PWR 1.2W MONO 8MSOP
ManufacturerSTMicroelectronics
TypeClass AB
TS4990IST datasheet
 

Specifications of TS4990IST

Output Type1-Channel (Mono)Max Output Power X Channels @ Load1.2W x 1 @ 8 Ohm
Voltage - Supply2.2 V ~ 5.5 VFeaturesDepop, Differential Inputs, Standby, Thermal Protection
Mounting TypeSurface MountPackage / Case8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
For Use With497-6383 - BOARD DEMO FOR TS4990Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other names497-4451-2  
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TS4990
The graph in
Figure 60
Figure 60. Frequency response gain vs. C
4.4
Power dissipation and efficiency
Hypotheses:
Load voltage and current are sinusoidal (V
Supply voltage is a pure DC source (V
The load can be expressed as:
and
and
Therefore, the average current delivered by the supply voltage is:
The power delivered by the supply voltage is:
shows an example of C
and C
in
and C
in
10
5
0
Cfeed = 330pF
Cfeed = 680pF
-5
Cfeed = 2.2nF
Cin = 470nF
-10
-15
Cin = 22nF
-20
Rin = Rfeed = 22k Ω
Cin = 82nF
Tamb = 25 ° C
-25
10
100
1000
Frequency (Hz)
and I
out
).
CC
ω
V
V
sin
t
=
out
PEAK
V
out
I
------------ -
(A)
=
out
R
L
2
V
PEAK
P
=
------------------------ -
out
2R
L
V
PEAK
I
2
=
--------------------- -
CC
πR
AVG
L
P
V
I
=
supply
CC
CC
AVG
Application information
influence.
feed
feed
10000
).
out
(V)
(W)
(A)
(W)
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