參數(shù)資料
型號: TS4990IQT
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8
封裝: 3 X 3 MM, LEAD FREE, DFN-8
文件頁數(shù): 5/32頁
文件大小: 714K
代理商: TS4990IQT
TS4990
Electrical characteristics
13/32
Figure 32.
Power dissipation vs. Pout
Figure 33.
Power derating curves
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.0
0.1
0.2
0.3
0.4
0.5
0.6
RL=4
Ω
RL=8
Ω
Vcc=3.3V
F=1kHz
THD+N<1%
RL=16
Ω
Power
Di
ssi
pat
ion
(
W
)
Output Power (W)
0
25
50
75
100
125
150
0.0
0.2
0.4
0.6
0.8
1.0
1.2
No Heat sink
Heat sink surface
100mm
2
(See demoboard)
Fl
ip
-C
hi
p
Package
Power
Di
ssi
pat
ion
(
W
)
Ambiant Temperature ( C)
Figure 34.
Clipping voltage vs. power supply
voltage and load resistor
Figure 35.
Power dissipation vs. Pout
2.5
3.0
3.5
4.0
4.5
5.0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Tamb = 25
°C
RL = 16
Ω
RL = 8
Ω
RL = 4
Ω
Vout
1
&
Vout
2
Cl
ippi
ng
Vol
tage
Low
si
de
(
V
)
Power supply Voltage (V)
0.0
0.1
0.2
0.3
0.4
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
RL=4
Ω
RL=8
Ω
Vcc=2.6V
F=1kHz
THD+N<1%
RL=16
Ω
Power
Di
ssi
pat
ion
(
W
)
Output Power (W)
Figure 36.
Clipping voltage vs. power supply
voltage and load resistor
Figure 37.
Current consumption vs. power
supply voltage
2.5
3.0
3.5
4.0
4.5
5.0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Tamb = 25
°C
RL = 16
Ω
RL = 8
Ω
RL = 4
Ω
Vout
1
&
Vout
2
Cl
ippi
ng
Vol
tage
Hi
gh
si
de
(
V
)
Power supply Voltage (V)
012
345
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
No load
Tamb=25
°C
Cur
re
nt
Consumpt
ion
(
m
A)
Power Supply Voltage (V)
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