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参数资料
| 型号： | TPA2005D1GQYR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| 封装： | PLASTIC, BGA-15 |
| 文件页数： | 7/32页 |
| 文件大小： | 1128K |
| 代理商： | TPA2005D1GQYR |
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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
相关PDF资料 |
PDF描述 |
|---|---|
| TPA2005D1DRBR | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
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| TPA2005D1ZQYR | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| TPA2005D1DGNR | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA2005D1DGN | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA2005D1-Q1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:1.4-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2005D1TDGNRQ1 | 功能描述:音频放大器 1.4W Mono Fil-Free Class-D Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA2005D1ZQYR | 功能描述:音频放大器 Mono Fully Diff Filter-Free Class-D RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA2005D1ZQYRG1 | 功能描述:音频放大器 1.4W Mono Class-D Audio Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA2006D1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:1.45-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER WITH 1.8-V COMPATIBLE INPUT THRESHOLDS |
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