TFA9843J/N1,112 NXP Semiconductors, TFA9843J/N1,112 Datasheet - Page 16

• Manufacturer Part Number: TFA9843J/N1,112
• Description: IC AMP AUDIO PWR 29W STER 9SIL
• Manufacturer: NXP Semiconductors
• Type: Class ABr

Specifications of TFA9843J/N1,112

• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Package / Case: 9-SIL (Bent and Staggered Leads)
• Max Output Power X Channels @ Load: 29W x 1 @ 8 Ohm; 14W x 2 @ 4 Ohm
• Voltage - Supply: 9 V ~ 26 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Product: General Purpose Audio Amplifiers
• Operating Supply Voltage: 9 V to 26 V
• Supply Current: 60 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3455-5; 935273794112; TFA9843J

Philips Semiconductors
14. Test information
9397 750 12587
Preliminary data
Fig 22. Junction temperature versus supply voltage.
2
music signals.
(˚C)
SE loads; T
150
100
T j
50
0
8
R L = 2
amb
12
14.1 Quality information
= 25 C; external heatsink of 10 K/W;
16
4
At V
is 8.4 W; see
power dissipation, is: 150
This calculation is for an application at worst-case (stereo) sine-wave output signals.
In practice music signals will be applied, which decreases the maximum power
dissipation to approximately half of the sine-wave power dissipation (see
Section
The General Quality Specification for Integrated Circuits, SNW-FQ-611 is applicable.
P
R
R
P
R
R
th(tot)
th(h-a)
th(tot)
th(h-a)
CC
20
6
R
R
= 18 V and R
th(tot)
th(tot)
8.2.2). This allows for the use of a smaller heatsink:
= 90/8.4 = 10.7 K/W
= 90/4.2 = 21.4 K/W
= R
= R
16
8
24
= 90 C
= 90 C
th(tot)
th(tot)
Figure
V CC (V)
MCE504
Rev. 02 — 19 January 2004
28
R
R
L
13. For T
th(j-mb)
th(j-mb)
= 4
60 = 90 C:
= 10.7
= 21.4
(2
j(max)
Fig 23. Junction temperature versus supply voltage.
SE) the measured worst-case sine-wave dissipation
BTL loads; T
music signals.
= 150 C the temperature raise, caused by the
2.0 = 8.7 K/W
2.0 = 19.4 K/W
(˚C)
2-channel audio amplifier (2 x SE or 1 x BTL)
150
T j
100
50
0
8
R L = 1
amb
12
= 25 C; external heatsink of 10 K/W;
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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2
20
3
TFA9843J
4
8
24
V CC (V)
MCE505
28
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