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參數資料
| 型號： | TDA2005 |
| 廠商： | 意法半導體 |
| 英文描述： | 20W Bridge Amplifier for Car Radio(用于汽車無線電的20W橋式放大器) |
| 中文描述： | 20瓦橋放大器（用于汽車無線電的20瓦橋式放大器的汽車收音機） |
| 文件頁數： | 17/20頁 |
| 文件大?。?/td> | 261K |
| 代理商： | TDA2005 |
BUILT-IN PROTECTION SYSTEMS
LoadDumpVoltage Surge
The TDA2005 has a circuit which enables it to
withstanda voltagepulsetrain,onPin9, ofthetype
shownin Figure 34.
If the supplyvoltage peaks to morethan 40V,then
an LC filter must be inserted between the supply
and pin 9, in order to assure that the pulses at pin
9 willbe held withing the limits shown.
AsuggestedLCnetworkisshowninFigure33.With
thisnetwork, a trainof pulses with amplitude up to
120V and width of 2ms can be applied at point A.
This type of protection is ON when the supply
voltage(pulse or DC)exceeds18V.Forthisreason
the maximum operatingsupply voltageis 18V.
Figure 33
Figure 34
Short Circuit
(AC and DC conditions)
TheTDA2005canwithstandapermanentshort-cir-
cuiton the outputfor a supply voltage up to 16V.
PolarityInversion
High current (up to 10A) can be handled by the
devicewithno damagefor a longerperiod thanthe
blow-out time of a quick 2A fuse (normally con-
nected in series with the supply). This feature is
added to avoid destruction, if during fitting to the
car, a mistake on the connection of the supply is
made.
OpenGround
When the ratio is in the ON condition and the
ground is accidentally opened, a standard audio
amplifierwillbedamaged.OntheTDA2005protec-
tion diodesare includedto avoidany damage.
Inductive Load
A protection diode is provided to allow use of the
TDA2005 with inductive loads.
DCVoltage
The maximum operating DC voltage for the
TDA2005 is 18V.
Howeverthedevicecanwithstanda DCvoltageup
to 28V with no damage.This could occur during
winterif twobatteriesareseriesconnectedtocrank
the engine.
Thermal Shut-down
The presenceof a thermallimiting circuitoffersthe
following advantages:
1) an overload on the output (even if it is
permanent), or an excessive ambient
temperaturecan be easilywithstood.
2) the heatsink can havea smaller factorof safety
compared with that of a conventional circuit.
There is no device damage in the case of
excessive junction temperature : all that
happensis thatP
O
(andthereforeP
tot
) andI
d
are
reduced.
The maximum allowable power dissipation de-
pendsuponthesizeof theexternalheatsink(i.e.its
thermal resistance); Figure 35 showsthe dissipa-
blepoweras a functionof ambienttemperaturefor
differentthermal resistance.
LoudspeakerProtection
The circuit offers loudspeaker protection during
short circuit forone wire to ground.
TDA2005
17/20
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TDA2005G-H14-B-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:20W BRIDGE AMPLIFIER FOR CAR RADIO |
| TDA2005G-J11-A-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:20W BRIDGE AMPLIFIER FOR CAR RADIO |
| TDA2005L-H14-B-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:20W BRIDGE AMPLIFIER FOR CAR RADIO |
| TDA2005L-J11-A-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:20W BRIDGE AMPLIFIER FOR CAR RADIO |
| TDA2005M | 功能描述:音頻放大器 20W Bridge Amplifier RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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