參數(shù)資料
型號(hào)： TPA1517DWPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
封裝： GREEN, PLASTIC, SOP-20
文件頁(yè)數(shù)： 7/22頁(yè)
文件大?。?/td> 540K
代理商： TPA1517DWPR
www.ti.com
1
2p60000 C
I
≤
1
2pR
L CI
≤ f
low
THERMAL APPLICATIONS
P
dB + 10Log
P
W
P
ref
+ 10Log
3.5
1
+ 5.44 dB
5.44 dB * 15 dB + * 9.56 dB (15 dB headroom)
5.44 dB * 12 dB + * 6.56 dB (12 dB headroom)
P
W + 10
PdB 10
P
ref
+ 111 mW (15 dB headroom)
+ 221 mW (12 dB headroom)
SLOS162D – MARCH 1997 – REVISED FEBRUARY 2007
APPLICATION INFORMATION (continued)
3. If low frequency response is most important and depop is not a consideration then follow:
Linear power amplifiers dissipate a significant amount of heat in the package under normal operating conditions.
A typical music CD requires 12 dB to 15 dB of dynamic headroom to pass the loudest portions without distortion
as compared with the average power output. Figure 19 shows that when the TPA1517 is operating from a 12-V
supply into a 4-
speaker that approximately 3.5 W peaks are possible. Converting watts to dB using the
following equation:
Subtracting dB for the headroom restriction to obtain the average listening level without distortion yields the
following:
Converting dB back into watts:
This is valuable information to consider when attempting to estimate the heat dissipation requirements for the
amplifier system. Comparing the absolute worst cast, which is 3.5 W of continuous power output with 0 dB of
headroom, against 12-dB and 15-dB applications drastically affects maximum ambient temperature ratings for
the system. Using the power dissipation curves for a 12-V, 4-
system, internal dissipation in the TPA1517 and
maximum ambient temperatures are shown in Table 1.
Table 1. TPA1517 Power Rating
PEAK OUTPUT POWER
POWER DISSIPATION
MAXIMUM AMBIENT
AVERAGE OUTPUT POWER
(W)
(W/Channel)
TEMPERATURE
3.5
3.5 W
2.1
-34
°C
3.5
1.77 W (3 dB)
2.4
-61
°C
3.5
884 mW (6 dB)
2.25
-48
°C
3.5
442 mW (9 dB)
1.75
-4
°C
3.5
221 mW (12 dB)
1.5
18
°C
3.5
111 mW (15 dB)
1.25
40
°C
15
相關(guān)PDF資料
PDF描述
TPA1517DWP 6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
TPA1517DWPRG4 6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
TPA1517NEE4 6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP20
TPA1517DWPG4 6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
TPA1517Y 6 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA1517DWPRG4 功能描述:音頻放大器 Stereo Med Power 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
TPA1517NE 功能描述:音頻放大器 6W Stereo Audio 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
TPA1517NEE4 功能描述:音頻放大器 Stereo Med Power 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
TPA1517NEEVM 功能描述:音頻 IC 開發(fā)工具 TPA1517NE Eval Mod 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
TPA152 制造商:TI 制造商全稱:Texas Instruments 功能描述:75-mW STEREO AUDIO POWER AMPLIFIER
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