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參數(shù)資料
| 型號(hào)： | TDA8933BTW |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Class D Audio Amplifier |
| 中文描述： | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO32 |
| 封裝： | 6.10 MM, 0.65 MM PITCH, PLASTIC, SOT-249-1, HTSSOP-32 |
| 文件頁數(shù)： | 2/42頁 |
| 文件大?。?/td> | 245K |
| 代理商： | TDA8933BTW |
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TDA8933B_1
NXP B.V. 2008. All rights reserved.
Preliminary data sheet
Rev. 01 — 23 October 2008
10 of 42
NXP Semiconductors
TDA8933B
Class D audio amplier
If the supply voltage exceeds 36 V the OVP circuit is activated and the power stages will
shut down. It is enabled again as soon as the supply voltage drops below the threshold
level. The power stage is restarted after 100 ms.
Supply voltages > 40 V may damage the TDA8933B. Two conditions should be
distinguished here:
If the supply voltage is pumped to higher values by the TDA8933B application itself
(see also Section 14.8), the OVP is triggered and the TDA8933B is shut down. The
supply voltage will decrease and the TDA8933B is thus protected against any
overstress.
If a supply voltage > 40 V is caused by other or by external causes the TDA8933B will
shut down, but the device can still be damaged since the supply voltage in this case
will remain > 40 V. The OVP protection is not a supply clamp.
An additional UnBalance Protection (UBP) circuit compares the positive analog supply
voltage VDDA with the negative analog supply voltage VSSA and is triggered if the
difference between them exceeds a certain level. This level depends on the sum of both
supply voltages. The UBP threshold levels can be dened as follows:
LOW-level threshold: VP(th)(ubp)l < 8/5 × VHVPREF
HIGH-level threshold: VP(th)(ubp)h > 8/3 × VHVPREF
In a symmetrical supply the UBP is released when the unbalance of the supply voltage is
within 6 % of its starting value.
Table 6 shows an overview of all protections and their effect on the output signal.
Table 6.
Overview of protections for the TDA8933B
Protection
Restart
When fault is removed
Every 100 ms
OTP
no
yes
OCP
yes
no
WP
yes
no
UVP
no
yes
OVP
no
yes
UBP
no
yes
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| TDA8933BTW/N2,112 | 功能描述:音頻放大器 Class D audio amplifier 32 leads 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 |
| TDA8933BTW/N2,118 | 功能描述:音頻放大器 Class D audio amplifier 32 leads 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 |
| TDA8933BTW/N2,512 | 功能描述:音頻放大器 TDA8933BTW/HTSSOP32/TUBEDP//N2 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 |
| TDA8933BTW/N2,518 | 功能描述:音頻放大器 TDA8933BTW/HTSSOP32/REEL13DP// 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 |
| TDA8933T | 功能描述:音頻放大器 2X10W BTL CLASS D AMP+VOLCTRL 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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