參數(shù)資料
型號(hào)： TPA0102PWPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
封裝： GREEN, PLASTIC, HTSSOP-24
文件頁數(shù)： 30/43頁
文件大?。?/td> 1122K
代理商： TPA0102PWPR
TPA0102
1.5-W STEREO AUDIO POWER AMPLIFIER
SLOS166E – MARCH 1997 – REVISED MARCH 2000
36
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
headroom and thermal considerations (continued)
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
DERATING FACTOR
TA = 70°C
TA = 85°C
PWP
2.7 W
21.8 mW/
°C
1.7 W
1.4 W
PWP
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 in2 of
copper area on a multilayer PCB is 22 mW/
°C and 54 mW/°C respectively. Converting this to ΘJA:
Θ
JA +
1
Derating
+
1
0.022
+ 45°C W
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
ΘJA, 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 TPA0102 is
150
°C. The internal dissipation figures are taken from the Power Dissipation vs Output Power graphs.
T
A Max + TJ Max * ΘJA PD
+ 150 * 45(0.4
2)
+ 114°C (15 dB headroom, 0 CFM)
NOTE:
Internal dissipation of 0.4 W is estimated for a 1.5-W system with 15 dB headroom per channel.
Table 4 shows that for most applications no airflow is required to keep junction temperatures in the specified
range. The TPA0102 is designed with thermal protection that turns the device off when the junction temperature
surpasses 150
°C to prevent damage to the IC. Table 4 was calculated for maximum listening volume without
distortion. When the output level is reduced the numbers in the table change significantly. Also, using 8-
speakers dramatically increases the thermal performance by increasing amplifier efficiency.
相關(guān)PDF資料
PDF描述
TPA0102PWPRG4 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
TPA0102PWPG4 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
TPA0103PWPLE 2.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PDSO24
TPA0103PWPR 2.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PDSO24
TPA0103PWP 2.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PDSO24
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA0102PWPRG4 功能描述:音頻放大器 1.5-W STEREO AUDIO POWER AMPLIFIER 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
TPA0103 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.75-W 3-CHANNEL STEREO AUDIO POWER AMPLIFIER
TPA0103EVM 功能描述:音頻 IC 開發(fā)工具 AUDIO POWER AMP EVAL MODULE RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
TPA0103PWP 功能描述:音頻放大器 1.75W 3-Ch. 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
TPA0103PWPG4 功能描述:音頻放大器 1.75W 3-Ch Stereo Aud Power Amp 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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