TDA8931T/N1,112 NXP Semiconductors, TDA8931T/N1,112 Datasheet - Page 17

• Manufacturer Part Number: TDA8931T/N1,112
• Description: IC AMP/COMPARATOR 22W D 20SOIC
• Manufacturer: NXP Semiconductors
• Type: Class Dr

Specifications of TDA8931T/N1,112

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 22W x 1 @ 4 Ohm
• Voltage - Supply: 12 V ~ 35 V, ±6 V ~ 17.5 V
• Features: Depop, Short-Circuit and Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3609-5; 935276045112; TDA8931T

Philips Semiconductors
9397 750 13847
Preliminary data sheet
Fig 6. Output power as a function of supply voltage
(W)
P
a. THD = 1 %.
O
30
20
10
0
10
14.1 Output power estimation
15
R
L
=
3
The output power, just before clipping, can be estimated using the following equation:
Where:
Example: Substituting R
R
The output power at THD = 10 % can be estimated by:
Figure 6
load impedances.
P
P
20
o 1%
ESR
o 10%
P
R
R
R
R
V
o(1%)
P
L
DSon
coil
ESR
= supply voltage (V
= load impedance
4
= 0.06
= series resistance output coil
=
= ESR of the single-ended capacitor
25
=
= on-resistance power switch
= output power just before clipping at THD = 1 %
shows the estimated output power as a function of the supply voltage for different
------------------------------------------------------------------------------------- -
1.25 P
----------------------------------------------------------------
R
L
6
+
and V
30
R
001aac236
DSon
V
o 1%
8
P
10
(V)
P
Rev. 01 — 14 January 2004
R
+
35
= 22 V results in output power P
8
L
R
DDP
L
coil
= 4 , R
R
L
+
V
R
SSP
ESR
DSon
)
V
(W)
P
b. THD = 10 %.
P
= 0.22
O
30
20
10
0
2
10
(at T
15
R
L
=
j
3
= 25 C), R
o
= 12.9 W.
20
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Power comparator 1
4
25
coil
= 0.045 ,
6
TDA8931
30
001aac237
V
P
8
10
(V)
35
17 of 31
20 W
(2)
(3)