參數(shù)資料
型號(hào)： TDF8553J
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 音頻／視頻放大
英文描述： 87 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM37
封裝： PLASTIC, SOT725-1
文件頁(yè)數(shù)： 6/47頁(yè)
文件大小： 391K
代理商： TDF8553J
TDF8553J_1
NXP B.V. 2008. All rights reserved.
Objective data sheet
Rev. 01 — 3 December 2008
14 of 47
NXP Semiconductors
TDF8553J
4
× 50 Watt power amplier and multiple voltage regulator
8.6.5 External DC-to-DC converter
The VDCDC supply pin can be connected to an external DC-to-DC down converter
(VO ≥ 5 V) to reduce the dissipation in regulator 3. If no external DC-to-DC converter is
used, the VDCDC pin must be connected to VP.
8.6.6 Protection
All regulator and switch outputs are fully protected by foldback current limiting against load
dumps and short-circuits; see Figure 6. During a load dump all regulator outputs, except
the output of regulators 2 and 6, will go low.
The power switches can withstand ‘loss-of-ground’. This means that if pin GND becomes
disconnected, the switch is protected by automatically connecting its outputs to ground.
8.6.7 Temperature protection
If the junction temperature of a regulator becomes too high, the amplier(s) are switched
off to prevent unwanted noise signals being audible. A regulator junction temperature that
is too high is indicated by pin DIAG going LOW and is also indicated by setting bit D6 in
data byte DB2.
If the junction temperature of the regulator continues to rise and reaches the maximum
temperature protection level, all regulators and switches will be disabled except
regulators 2 and 6.
8.7 I2C-bus specication
Fig 6.
Foldback current protection
VREGn
IOS
IOlim
IREGn
001aai698
Fig 7.
Address byte
mdb516
MSB
LSB
0 = write
1 = read
1
0
1
0
R/W
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDF8590TH 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:2 X 80 W SE (4 OHM) or 1 X 160 W BTL (8 OHM) class-D amplifier
TDF8590TH/N1,118 功能描述:音頻放大器 AMPLIFIER CLASS D RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
TDF8590TH/N1S,118 功能描述:音頻放大器 4/8 OHM CLASS D AMP RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
TDF8590TH/N1-T 功能描述:音頻放大器 AMPLIFIER CLASS D RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
TDF8590TH/N1TJ 制造商:NXP Semiconductors 功能描述:- Tape and Reel
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