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參數(shù)資料
| 型號： | TFA9843J |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2-channel audio amplifier (SE: 1 W to 20 W or BTL: 4 W to 40 W) |
| 中文描述： | 14 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM9 |
| 封裝： | POWER, PLASTIC, SOT-523-1, DIL-BENT-SIL, 9 PIN |
| 文件頁數(shù)： | 16/21頁 |
| 文件大?。?/td> | 142K |
| 代理商： | TFA9843J |
Philips Semiconductors
TFA9843J
2-channel audio amplifier (2 x SE or 1 x BTL)
Preliminary data
Rev. 02 — 19 January 2004
16 of 21
9397 750 12587
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
At V
CC
= 18 V and R
L
= 4
(2
×
SE) the measured worst-case sine-wave dissipation
is 8.4 W; see
Figure 13
. For T
j(max)
= 150
°
C the temperature raise, caused by the
power dissipation, is: 150
60 = 90
°
C:
P
×
R
th(tot)
= 90
°
C
R
th(tot)
= 90/8.4 = 10.7 K/W
R
th(h-a)
= R
th(tot)
R
th(j-mb)
= 10.7
2.0 = 8.7 K/W
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 8.2.2
). This allows for the use of a smaller heatsink:
P
×
R
th(tot)
= 90
°
C
R
th(tot)
= 90/4.2 = 21.4 K/W
R
th(h-a)
= R
th(tot)
R
th(j-mb)
= 21.4
2.0 = 19.4 K/W
14. Test information
14.1 Quality information
The General Quality Specification for Integrated Circuits, SNW-FQ-611is applicable.
2
×
SE loads; T
amb
= 25
°
C; external heatsink of 10 K/W;
music signals.
BTL loads; T
amb
= 25
°
C; external heatsink of 10 K/W;
music signals.
Fig 22. Junction temperature versus supply voltage.
Fig 23. Junction temperature versus supply voltage.
8
150
100
50
0
12
28
VCC (V)
16
20
24
MCE504
Tj
(C)
RL = 2
4
6
8
16
8
150
100
50
0
12
28
VCC (V)
16
20
24
MCE505
Tj
(C)
2
3
4
8
RL = 1
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| TFA9843J/N1,112 | 功能描述:音頻放大器 AUDIO AMP 2CH RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TFA9879 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Mono BTL class-D audio amplifier for portable applications with digital input |
| TFA9879HN/N1 | 制造商:NXP Semiconductors 功能描述:IC AMP AUDIO MONO 3W DBS17P |
| TFA9879HN/N1,118 | 功能描述:音頻放大器 ClassD 2.75W 2Channel 1.8V 5.7mA RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TFA9879HN/N1,157 | 功能描述:音頻放大器 ClassD 2.75W 2Channel 1.8V 5.7mA RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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