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參數資料
| 型號： | TPA2005D1DRBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, VSON-8 |
| 文件頁數： | 7/32頁 |
| 文件大?。?/td> | 1128K |
| 代理商： | TPA2005D1DRBR |
第1頁第2頁第3頁第4頁第5頁第6頁當前第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
Gain 1 +
V
O
V
I1
+ 2
150 kW
R
I1
V
(11)
Gain 2 +
V
O
V
I2
+ 2
150 kW
R
I2
V
(12)
C
I1 +
1
2p R
I1
f
c1
(13)
C
I2 +
1
2p R
I2
f
c2
(14)
C
P +
C
I1 )
C
I2
(15)
R
P +
R
I1
R
I2
R
I1 )
R
I2
(16)
_
+
IN–
IN+
PWM
H–
Bridge
VO+
VO–
Internal
Oscillator
CS
To Battery
VDD
GND
Bias
Circuitry
RI2
RP
Filter-Free Class D
SHUTDOWN
RI1
Single-Ended
Input 2
CI2
CP
Single-Ended
Input 1
CI1
EFFICIENCY AND THERMAL INFORMATION
q
JA
+
1
Derating Factor
+
1
0.016
+ 62.5
°C W
(17)
T
A
Max + TJMax * qJAPDmax + 150 * 62.5 (0.2) + 137.5°C
(18)
www.ti.com............................................................................................................................................................... SLOS369F – JULY 2002 – REVISED JULY 2008
Figure 37. Application Schematic With TPA2005D1 Summing Two Single-Ended Inputs
The maximum ambient temperature depends on the heat-sinking ability of the PCB system. The derating factor
for the 2,5-mm x 2,5-mm MicroStar Junior package is shown in the dissipation rating table. Converting this to
θ
JA:
Given
θ
JA of 62.5°C/W, the maximum allowable junction temperature of 150°C, and the maximum internal
dissipation of 0.2 W (worst case 5-V supply), the maximum ambient temperature can be calculated with equation
Equation Equation 18 shows that the calculated maximum ambient temperature is 137.5°C at maximum power
dissipation with a 5-V supply; however, the maximum ambient temperature of the package is limited to 85°C.
Because of the efficiency of the TPA2005D1, it can be operated under all conditions to an ambient temperature
of 85°C. The TPA2005D1 is designed with thermal protection that turns the device off when the junction
temperature surpasses 150°C to prevent damage to the IC. Also, using speakers more resistive than 8-
dramatically increases the thermal performance by reducing the output current and increasing the efficiency of
the amplifier.
Copyright 2002–2008, Texas Instruments Incorporated
15
Product Folder Link(s): TPA2005D1
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA2005D1DRBR | 制造商:Texas Instruments 功能描述:IC AUDIO AMP DIFF CLASS D SON 制造商:Texas Instruments 功能描述:IC, AUDIO AMP, DIFF CLASS D, SON 制造商:Texas Instruments 功能描述:IC, AUDIO AMP, DIFF CLASS D, SON; Amplifier Class:D; No. of Channels:1; Output Power:1.4W; Supply Voltage Range:2.5V to 5.5V; Amplifier Case Style:QFN; No. of Pins:8; Load Impedance:8ohm; Operating Temperature Min:-40C; Operating ;RoHS Compliant: Yes |
| TPA2005D1DRBRG4 | 功能描述:音頻放大器 Mono Fully Diff Filter-Free Class-D 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 |
| TPA2005D1EVM | 功能描述:音頻 IC 開發工具 TPA2005D1 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA2005D1GQYR | 功能描述:音頻放大器 Mono Fully Diff Filter-Free Class-D 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 |
| TPA2005D1-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.4-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
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