TS4990EIJT STMicroelectronics, TS4990EIJT Datasheet - Page 19

• Manufacturer Part Number: TS4990EIJT
• Description: IC AMP AUDIO PWR 1.2W 9FLIPCHIP
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS4990EIJT

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1.2W x 1 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Features: Depop, Differential Inputs, Standby, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 9-FlipChip
• For Use With: 497-6383 - BOARD DEMO FOR TS4990
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TS4990
4.4
The graph in
Figure 60. Frequency response gain vs. C
Power dissipation and efficiency
Hypotheses:
●
●
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:
Load voltage and current are sinusoidal (V
Supply voltage is a pure DC source (V
Figure 60
shows an example of C
-10
-15
-20
-25
10
-5
5
0
10
P
supply
Cin = 82nF
V
I
CC
P
out
out
I
AVG
=
out
100
Cin = 22nF
=
V
=
Cin = 470nF
V
Frequency (Hz)
=
=
CC
V
------------------------ -
CC
PEAK
2
V
------------ -
PEAK
2R
R
V
--------------------- -
⋅
out
).
in
PEAK
L
πR
in
out
I
L
CC
Cfeed = 330pF
and C
sin
and C
L
2
Cfeed = 680pF
and I
AVG
ω
1000
Rin = Rfeed = 22k Ω
Tamb = 25 ° C
t
Cfeed = 2.2nF
(A)
(W)
feed
feed
out
(A)
(V)
(W)
).
influence.
10000
Application information
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