TS4994IST STMicroelectronics, TS4994IST Datasheet - Page 10

• Manufacturer Part Number: TS4994IST
• Description: IC AMP AUDIO PWR 1W MONO 8MSOP
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS4994IST

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1W x 1 @ 8 Ohm
• Voltage - Supply: 2.5 V ~ 5.5 V
• Features: Depop, Differential Inputs, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• For Use With: 497-6396 - BOARD EVAL FOR LV TS4984IQT497-6395 - BOARD EVAL FOR LP DIFF TS4994IQT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4452-2

Electrical characteristics
10/35
Figure 9.
Figure 11. Output power vs. power supply
Figure 13. Output power vs. load resistance
1.0
0.8
0.6
0.4
0.2
0.0
1.0
0.8
0.6
0.4
0.2
0.0
0.3
0.2
0.1
0.0
2.5
0.0
8 8
Cb = 1 μ F
F = 1kHz
BW < 125kHz
Tamb = 25 ° C
Vcc=3.5V
Power dissipation vs. output power
voltage
12
3.0
0.1
Vcc=3V
Vcc=5V
RL=16 Ω
Load Resistance
16
16
3.5
Output Power (W)
Vcc=2.5V
Vcc=4.5V
0.2
Vcc (V)
20
RL=8 Ω
4.0
Vcc=4V
8 Ω
24
24
0.3
16 Ω
THD+N=1%
Cb = 1 F
F = 1kHz
BW < 125kHz
Tamb = 25 ° C
32 Ω
4.5
Vcc=3.3V
F=1kHz
THD+N<1%
28
0.4
5.0
32
32
Figure 10. Power dissipation vs. output power
Figure 12. Output power vs. power supply
Figure 14. Power derating curves
0.20
0.15
0.10
0.05
0.00
1.5
1.0
0.5
0.0
1.50
1.25
1.00
0.75
0.50
0.25
0.00
0.0
0
2.5
Vcc=2.6V
F=1kHz
THD+N<1%
Cb = 1 μ F
F = 1kHz
BW < 125kHz
Tamb = 25 ° C
voltage
25
3.0
AMR Value
Ambiant Temperature ( C)
0.1
Output Power (W)
50
3.5
Vcc (V)
RL=16 Ω
with 4 layers PCB
75
4.0
8 Ω
0.2
RL=8 Ω
100
16 Ω
4.5
TS4994
32 Ω
5.0
125
0.3