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参数资料
| 型号： | TDA7266SA |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 7 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| 封装： | CLIPWATT-15 |
| 文件页数： | 10/11页 |
| 文件大小： | 522K |
| 代理商： | TDA7266SA |
TDA7266SA
8/11
HEAT SINK DIMENSIONING:
In order to avoid the thermal protection intervention, that is placed approximatively at Tj = 150°C, it is important
the dimensioning of the Heat Sinker RTh (°C/W).
The parameters that influence the dimensioning are:
– Maximum dissipated power for the device (Pdmax)
– Max thermal resistance Junction to case (RTh j-c)
– Max. ambient temperature Tamb max
– Quiescent current Iq (mA)
Example:
VCC = 11V, Rload = 8ohm, RTh j-c = 2.5 °C/W , Tamb max = 50°C
Pdmax = (N° channels)
Pdmax = 2 ( 3.0 ) + 0.5 = 6.5 W
(Heat Sinker)
In figure 12 is shown the Power derating curve for the device.
Figure 12. Power derating curve
V
cc
2
Π
2
R
loa d
2
--------------
---------------------------
I
q
V
cc
+
R
Th c-a
150
T
am b max
–
P
d max
-----------------------------------------
R
Th j-c
–
150
50
–
6.5
----------------------
2.5
–
12.8
°C/W
==
=
a)
Infinite Heatsink
b)
7 °C/ W
c)
10 °C/ W
(c)
(a)
(b)
0
5
10
15
20
25
0
40
80
120
160
Tamb (°C)
Pd
(
W
)
a)
Infinite Heatsink
b)
7 °C/ W
c)
10 °C/ W
(c)
(a)
(b)
0
5
10
15
20
25
0
40
80
120
160
Tamb (°C)
Pd
(
W
)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7266SA-LG | 制造商:ST 功能描述:7W+7W DUAL BRIDGE AMPLIFIER |
| TDA7266SAN | 制造商:STMicroelectronics 功能描述:SADA_5 W + 5 W dual bridge amplifier |
| TDA7267 | 功能描述:音频放大器 2W Mono Amplifier 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 |
| TDA7267 | 制造商:STMicroelectronics 功能描述:Audio Power Amplifier IC |
| TDA7267A | 功能描述:音频放大器 3W Mono Amplifier 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 |
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