TDA7850A STMicroelectronics, TDA7850A Datasheet - Page 11

• Manufacturer Part Number: TDA7850A
• Description: IC AMP QUAD BRIDGE FLEXIWATT25
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7850A

• Output Type: 4-Channel (Quad)
• Max Output Power X Channels @ Load: 85W x 4 @ 2 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Package / Case: 25-Flexiwatt (bent and staggered leads)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7850A
Figure 14. Power dissipation and efficiency
Figure 16. Power dissipation vs. output power
Figure 18. ITU R-ARM frequency response,
-10
-20
-30
-40
-50
30
25
20
15
10
10
90
80
70
60
50
40
30
20
10
5
0
0
0
10
0
P
Output attenuation (dB)
P
tot
tot
V
R
GAUSSIAN NOISE
V
R
f = 1 KHz SINE
(W)
(W)
2
S
L
S
L
= 13.2 V
= 14.4 V
= 4 x 4Ω
= 4 x 4Ω
4
1
6
vs. output power (R
(R
weighting filter for transient pop
100
8
L
= 4Ω, audio program simulation)
10
2
12
P
14
o
(W)
P
o
1000
CLIP START
(W)
3
Hz
16
18
20
L
4
22
= 4 Ω, SINE)
10000
24
P
tot
η
26
5
η (%)
28
AC00074
AC00076
30
100000
AC00343
90
80
70
60
50
40
30
20
10
0
6
Figure 15. Power dissipation and efficiency
Figure 17. Power dissipation vs. output power
60
55
50
45
40
35
30
25
20
15
10
5
180
160
140
120
100
0
80
60
40
20
0
P
tot
0
Ptot (W)
(W)
V
R
GAUSSIAN NOISE
S
L
= 13.2 V
= 4 x 2Ω
V
R
f = 1 KHz SINE
S
5
L
= 14.4 V
= 4 x 2Ω
10
2
vs. output power (R
(R
L
15
= 2Ω, audio program simulation)
20
4
CLIP START
P
25
o
(W)
P
o
(W)
Electrical specifications
30
6
35
η
L
40
= 2 Ω, SINE)
P
tot
45
8
50
η (%)
AC00075
55
AC00077
11/16
90
80
70
60
50
40
30
20
10
0
10