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參數(shù)資料
| 型號： | TDF8555J/N1 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 44 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM37 |
| 封裝： | PLASTIC, SOT725-1, 37 PIN |
| 文件頁數(shù)： | 15/55頁 |
| 文件大小： | 534K |
| 代理商： | TDF8555J/N1 |
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TDF8555J
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 29 August 2011
22 of 55
NXP Semiconductors
TDF8555J
4
45 W power amplifier with multiple voltage regulator
(1)
Example: VP =14.4V, VREG2 (voltage on pin REG2) = 3.3 V, RL =1 k and
Cbackup =100 F providing a tdelay of 321 ms.
When an overvoltage condition occurs, the voltage on pin BUCAP is limited to
approximately 24 V.
8.6 Power switches
There are two power switches that provide an unregulated DC voltage output for
amplifiers and an aerial motor respectively. The switches have internal protection for
overtemperature conditions and are activated by setting bits IB1[D2] and IB1[D3] to logic
1.
In the ON state, the switches have a low impedance to the battery voltage. When the
battery voltage is higher than 22 V, the switches are switched off. When the battery
voltage is below 22 V the switches are set to their original condition.
The power switches have built-in surge protection to be able to absorb energy from
switching inductive or capacitive external loads. This surge protection is implemented in
such a way that in case no supply (VP) is present, the supply line will not be charged from
a possible external source connected to a power switch output.
8.7 Protection
All regulator and switch outputs are fully protected against load dump and short-circuit
(foldback current protection); see Figure 15. At load dump, all regulator outputs, except
the output of regulator 2 and regulator 6, will go LOW. The power switches can withstand
‘loss of ground’ which means that pin GND is disconnected and the switch output is
connected to ground.
Fig 14. Backup capacitor function
t
delay
C
backup
R
L
V
P
V
REG2
0.5
–
–
V
REG2
----------------------------------------------
=
VREG2
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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: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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