TS4990 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TS4990' PDF : 33 Pages View PDF
TS4990
Electrical characteristics
Figure 32. Power dissipation vs. Pout
0.6
Vcc=3.3V
F=1kHz
0.5 THD+N<1%
0.4
RL=4Ω
0.3
0.2
RL=8Ω
0.1
RL=16Ω
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Output Power (W)
Figure 33. Power derating curves
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
Heat sink surface ≈ 100mm2
(See demoboard)
No Heat sink
25
50
75
100
125
150
Ambiant Temperature ( C)
Figure 34. Clipping voltage vs. power supply Figure 35. Power dissipation vs. Pout
voltage and load resistor
0.7
Tamb = 25°C
0.6
RL = 4Ω
0.5
0.4
RL = 8Ω
0.3
0.2
0.1
RL = 16Ω
0.0
2.5
3.0
3.5
4.0
4.5
5.0
Power supply Voltage (V)
0.40
Vcc=2.6V
0.35 F=1kHz
THD+N<1%
0.30
RL=4Ω
0.25
0.20
0.15
RL=8Ω
0.10
0.05
RL=16Ω
0.00
0.0
0.1
0.2
0.3
0.4
Output Power (W)
Figure 36. Clipping voltage vs. power supply Figure 37. Current consumption vs. power
voltage and load resistor
supply voltage
0.6
Tamb = 25°C
0.5
RL = 4Ω
0.4
RL = 8Ω
0.3
0.2
0.1
RL = 16Ω
0.0
2.5
3.0
3.5
4.0
4.5
5.0
Power supply Voltage (V)
4.0
No load
3.5 Tamb=25°C
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
1
2
3
4
5
Power Supply Voltage (V)
13/32
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