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參數(shù)資料
| 型號： | TDF8599TH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 70 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封裝： | PLASTIC, SOT851-2, HSOP-36 |
| 文件頁數(shù)： | 9/53頁 |
| 文件大?。?/td> | 329K |
| 代理商： | TDF8599TH |
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TDF8599_2
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 30 July 2009
17 of 53
NXP Semiconductors
TDF8599
I2C-bus controlled dual channel class-D power amplier
In I2C-bus mode, DC offsets generate a voltage shift around the bias voltage. When the
voltage shift exceeds threshold values, the offset alarm bit DB1[D2] is set and if bit
IB1[D7] is not set, diagnostic information is also given. Any detected offset shuts down
both channels when bit IB2[D7] is not set. To restart the TDF8599 in I2C-bus mode, pin
EN must be toggled or DCP disabled by connecting pin DCP to pin AGND.
In non-I2C-bus mode, when an offset is detected, DCP always gives diagnostic
information on pin DIAG and shuts down both channels.
Connecting a capacitor between pins DCP and AGND enables DC offset protection.
Connecting pin DCP to pin AGND disables DCP in both I2C-bus and non-I2C-bus mode.
8.5.6 Supply voltages
UnderVoltage Protection (UVP) is activated when the supply voltage drops below the UVP
threshold (typically 7.5 V). UVP triggers the UVP circuit causing the system to rst mute
and then stop switching. When the supply voltage rises above the threshold level, the
system restarts.
OverVoltage Protection (OVP) is activated when the supply voltage exceeds the OVP
threshold (typically 27 V). The OVP (or load dump) circuit is activated and the power
stages are shutdown.
An overview of all protection circuits and the amplier states is given in Table 10.
8.5.7 Overview of protection circuits and amplier states
[1]
When fault is removed.
[2]
Amplier gain depends on the junction temperature and size of the heat sink.
[3]
TFP inuences restart timing depending on heat sink size.
[4]
Shorted load causes a restart of the channel every 50 ms.
[5]
Latched protection is reset by toggling pin EN or by disabling DCP in I2C-bus mode.
[6]
In I2C-bus mode deep supply voltage drops will cause a Power-On Reset (POR). The restart requires an
I2C-bus command.
Table 10.
Overview of TDF8599 protection circuits and amplier states
Protection circuit name
Amplier state
Complete
shutdown
Channel
shutdown
Restart[1]
TFP
N[2]
OTP
Y
N
OCP
N
Y
WP
N
Y
DCP
Y
N
N[5]
UVP
Y
N
OVP
Y
N
Y
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| TDF8599TH/N2,512 | 功能描述:音頻放大器 IC AMP AUDIO PWR 85W D 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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| TDF8704T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit high-speed analog-to-digital converter |
| TDF8704T/2 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit high-speed analog-to-digital converter |
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