欢迎访问ic37.com |
会员登录 免费注册
发布采购

TA2024B 参数 Datasheet PDF下载

TA2024B图片预览
型号: TA2024B
PDF下载: 下载PDF文件 查看货源
内容描述: 立体声15W ( 4з ) CLASS- T⑩数字音频功放采用数字电源PROCESSING⑩技术 [STEREO 15W (4з) CLASS-T⑩ DIGITAL AUDIO AMPLIFIER USING DIGITAL POWER PROCESSING⑩ TECHNOLOGY]
分类和应用: 放大器
文件页数/大小: 14 页 / 539 K
品牌: TRIPATH [ TRIPATH TECHNOLOGY INC. ]
 浏览型号TA2024B的Datasheet PDF文件第6页浏览型号TA2024B的Datasheet PDF文件第7页浏览型号TA2024B的Datasheet PDF文件第8页浏览型号TA2024B的Datasheet PDF文件第9页浏览型号TA2024B的Datasheet PDF文件第11页浏览型号TA2024B的Datasheet PDF文件第12页浏览型号TA2024B的Datasheet PDF文件第13页浏览型号TA2024B的Datasheet PDF文件第14页  
Tripath Technology, Inc. - Technical Information  
F au l t P in  
The FAULT pin is a 5V logic output that indicates various fault conditions within the device.  
These conditions include: low supply voltage, low charge pump voltage, low 5V regulator voltage,  
over current at any output, and junction temperature greater than approximately 155°C. All faults  
except overcurrent all reset upon removal of the condition. The FAULT output is capable of  
directly driving an LED through a series 2kresistor. If the FAULT pin is connected directly to  
the MUTE input an automatic reset will occur in the event of an over-current condition.  
P ow er D i ssi p at i o n Der at i n g  
For operating at ambient temperatures above 25°C the device must be derated based on a  
150°C maximum junction temperature, TJMAX as given by the following equation:  
(T  
=
T )  
A
JMAX  
P
DISS  
θ
JA  
where…  
PDISS = maximum power dissipation  
TJMAX = maximum junction temperature of TA2024B  
TA = operating ambient temperature  
θJA = junction-to-ambient thermal resistance  
Where θJA of the package is determined from the following graph:  
JA vs Copper Area  
Θ
50  
40  
Pdiss - 1.35W  
30  
20  
10  
Pdiss - 2W  
Pdiss - 3.4W  
0
1
2
3
4
5
6
Copper Area (square inches)  
In the above graph Copper Area is the size of the copper pad on the PC board to which the heat  
slug of the TA2024B is soldered. The heat slug must be soldered to the PC Board to increase  
the maximum power dissipation capability of the TA2024B package. Soldering will minimize the  
likelihood of an over-temperature fault occurring during continuous heavy load conditions. The  
vias used for connecting the heatslug to the copper area on the PCB should be 0.013” diameter.  
Perfo rm an ce Mea su r emen ts o f th e T A20 2 4B  
The TA2024B operates by generating a high frequency switching signal based on the audio input.  
This signal is sent through a low-pass filter (external to the Tripath amplifier) that recovers an  
amplified version of the audio input. The frequency of the switching pattern is spread spectrum  
and typically varies between 100kHz and 1.0MHz, which is well above the 20Hz – 20kHz audio  
band. The pattern itself does not alter or distort the audio input signal but it does introduce some  
inaudible components.  
10  
TA2024B –KL/1.2/01.06