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參數(shù)資料
| 型號： | TPA0252PWPR |
| 元件分類： | 音頻放大器 |
| 英文描述： | Toggle |
| 中文描述： | 放大器。其他 |
| 文件頁數(shù)： | 39/42頁 |
| 文件大小： | 806K |
| 代理商： | TPA0252PWPR |
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TPA0202
2-W STEREO AUDIO POWER AMPLIFIER
SLOS205B – FEBRUARY 1998 – REVISED DECEMBER 2000
39
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
headroom and thermal considerations (continued)
Table 4. TPA0202 Power Rating, 5-V, 3-
, Stereo
PEAK OUTPUT POWER
(W)
AVERAGE OUTPUT POWER
POWER DISSIPATION
(W/Channel)
MAXIMUM AMBIENT
TEMPERATURE
–3
°
C
6
°
C
24
°
C
51
°
C
78
°
C
96
°
C
2
2 W
1.7
2
1000 mW (3 dB)
1.6
2
500 mW (6 dB)
1.4
2
250 mW (9 dB)
1.1
2
120 mW (12 dB)
0.8
2
63 mW (15 dB)
0.6
PACKAGE
PWP
TA
≤
25
°
C
2.7 W
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DERATING FACTOR
21.8 mW/
C
TA = 70
°
C
1.7 W
TA = 85
°
C
1.4 W
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2.8 W
22.1 mW/
C
1.8 W
1.4 W
This parameter is measured with the recommended copper heat sink pattern on a 1-layer PCB, 4 in2 5-in
×
5-in PCB,
1 oz. copper, 2-in
×
2-in coverage.
This parameter is measured with the recommended copper heat sink pattern on an 8-layer PCB, 6.9 in2 1.5-in
×
2-in PCB,
1 oz. copper with layers 1, 2, 4, 5, 7, and 8 at 5% coverage (0.9 in2) and layers 3 and 6 at 100% coverage (6 in2).
The maximum ambient temperature depends on the heatsinking ability of the PCB system. Using the 0 CFM
and 300 CFM data from the dissipation rating table, the derating factor for the PWP package with 6.9 in
2
of
copper area on a multilayer PCB is 22 mW/
°
C and 54 mW/
°
C respectively. Converting this to
Θ
JA
:
1
Derating
Θ
JA
1
0.022
45
°
C W
For 0 CFM :
(19)
To calculate maximum ambient temperatures, first consider that the numbers from the dissipation graphs are
per channel so the dissipated heat needs to be doubled for two channel operation. Given
Θ
JA
, the maximum
allowable junction temperature, and the total internal dissipation, the maximum ambient temperature can be
calculated with the following equation. The maximum recommended junction temperature for the TPA0202 is
150
°
C. The internal dissipation figures are taken from the Power Dissipation vs Output Power graphs.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA0252PWPRG4 | 功能描述:音頻放大器 Stereo Class-AB w/Ster Hdphn Drive 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 |
| TPA0253 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1-W MONO AUDIO POWER AMPLIFIER WITH HEADPHONE DRIVE |
| TPA0253_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1-W MONO AUDIO POWER AMPLIFIER WITH HEADPHONE DRIVE |
| TPA0253DGQ | 功能描述:音頻放大器 Mono Lo-Pwr Class-AB 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 |
| TPA0253DGQ | 制造商:Texas Instruments 功能描述:IC SM POWER AMP CLASS-AB AUDIO |
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