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参数资料
| 型号： | MAX9742ETX+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/36页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 20.5W D 36TQFN |
| 标准包装： | 50 |
| 类型： | D 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 20.5W x 2 @ 8 欧姆 |
| 电源电压： | 20 V ~ 40 V，±10 V ~ 20 V |
| 特点： | 消除爆音，差分输入，静音，短路和热保护，关机 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
| 包装： | 管件 |
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MAX9742
These copper paths must be as wide as possible. Each
of these paths contributes to the overall thermal capa-
bilities of the system.
The copper polygon to which the exposed paddle is
attached should have multiple vias to the opposite side
of the PCB, where they connect to another copper poly-
gon. Make this polygon as large as possible within the
system’s constraints for signal routing.
Additional improvements are possible if all the traces
from the device are made as wide as possible.
Although the IC pins are not the primary thermal path
out of the package, they do provide a small amount.
The total improvement would not exceed approximately
10%, but it could make the difference between accept-
able performance and thermal problems.
Auxiliary Heatsinking
If operating in higher ambient temperatures, it is possi-
ble to improve the thermal performance of a PCB with
the addition of an external heatsink. The thermal resis-
tance to this heatsink must be kept as low as possible
to maximize its performance. With a bottom-side
exposed paddle, the lowest resistance thermal path is
on the bottom of the PCB. The topside of the IC is not a
significant thermal path for the device, and therefore, is
not a cost-effective location for a heatsink. Place the
inductor of the external LC output filter in close proximi-
ty to the IC. This not only helps minimize EMI radiation
at the output traces, but also helps draw heat away
from the MAX9742.
Single-/Dual-Supply, Stereo 16W,
Class D Amplifier with Differential Inputs
30
______________________________________________________________________________________
Chip Information
PROCESS: BCD
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+
MAX9742
TOP VIEW
TQFN
(6mm × 6mm × 0.8mm)
REGM
MID
REGP
REFCUR
SFT
LGND
LV
DD
SHDN
N.C.
FBR
INR-
INR+
NSENSE
REGLS
BOOTR
OUTR
N.C.
V
DD
V
DD
V
DD
V
DD
V
SS
V
SS
V
SS
N.C.
OUTL
SUB
BOOTL
N.C.
INL+
INL-
FBL
N.C.
Pin Configuration
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9742ETX+ | 功能描述:音频放大器 Stereo 16W Class D 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 |
| MAX9742ETX+T | 功能描述:音频放大器 Stereo 16W Class D 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 |
| MAX9742EVKIT+ | 功能描述:音频放大器 Evaluation Kit for the MAX9742 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 |
| MAX9744ETH+ | 功能描述:音频放大器 Stereo 20W Class D 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 |
| MAX9744ETH+T | 功能描述:音频放大器 Stereo 20W Class D 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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