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參數資料
| 型號： | TPA3200D1DCP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| 封裝： | GREEN, PLASTIC, HTSSOP-44 |
| 文件頁數： | 14/29頁 |
| 文件大小： | 1083K |
| 代理商： | TPA3200D1DCP |
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THERMAL PROTECTION
THERMAL CONSIDERATIONS: OUTPUT POWER AND MAXIMUM AMBIENT TEMPERATURE
T
Amax
+
T
Jmax
* q
JA PDissipated
where : T
Jmax
+
150 C
q
JA
+
1
deratingfactor
+
1
0.0391
+
25.6 C
(2)
Efficiency + X 85% for an 8W load
P
Dissipated + PO(average)
1
Efficiency *
1
Efficiency + X 75% for an 4W load
(3)
P
Dissipated + 20 W
1
0.85 *
1
+ 3.53 W
T
Amax + 150 C * (25.6 C W
1.76 W)
+ 59.6 C
(4)
GAIN SETTING VIA GAIN0 AND GAIN1 INPUTS
TPA3200D1
SLOS442A – MAY 2005 – REVISED JULY 2005
Thermal protection on the TPA3200D1 prevents damage to the device when the internal die temperature
exceeds 150°C. There is a ±15°C tolerance on this trip point from device to device. Once the die temperature
exceeds the thermal set point, the device enters into the shutdown state and the outputs are disabled. This is not
a latched fault. The thermal fault is cleared once the temperature of the die is reduced by 15°C. The device
begins normal operation at this point with no external system interaction.
To calculate the maximum ambient temperature, Equation 2 is used:
The derating factor for the 44-pin DCP package is given in the dissipation rating table.
To estimate the power dissipation, Equation 3 is used:
Example. What is the maximum ambient temperature for an application that requires the TPA3200D1 to drive
20 W into an 8-
speaker?
This calculation shows that the TPA3200D1 can drive 20 W of RMS power into an 8-
speaker up to a maximum
ambient temperature rating of 60°C.
The gain of the TPA3200D1 is set by two input terminals, GAIN0 and GAIN1. See Table 6.
Table 6. Gain Settings
AMPLIFIER GAIN
Output Voltage with Full Scale Input
(dB)
and VDD=5 V (VRMS)
GAIN1
GAIN0
TYP
0
12
5.63
0
1
18
11.23
1
0
23.6
21.4(1)
1
Reserved
(1)
Output clipping with VCC = 18 V
21
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA3200D1DCP | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC 制造商:Texas Instruments 功能描述:IC, AUDIO PWR AMP, CLASS D 20W HTSSOP-44 |
| TPA3200D1DCPG4 | 功能描述:音頻放大器 Mono High Power Dig Input Class-D RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA3200D1DCPR | 功能描述:音頻放大器 Mono High Power Dig Input Class-D RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA3200D1DCPRG4 | 功能描述:音頻放大器 Mono High Power Dig Input Class-D RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA3200D1EVM | 功能描述:音頻 IC 開發(fā)工具 TPA3200D1 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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