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| 型号： | SI8244BB-C-IS1 |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 13/30页 |
| 文件大小： | 0K |
| 描述： | IC AUDIO DRIVER PWM 16-SOIC |
| 标准包装： | 48 |
| 类型： | 音频驱动器 |
| 应用： | D 类音频放大器 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 管件 |
| 其它名称： | 336-2001-5 SI8244BB-B-IS1 |
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Si824x
20
Rev. 1.0
3.6. Layout Considerations
It is most important to minimize ringing in the drive path and noise on the Si824x VDD lines. Care must be taken to
minimize parasitic inductance in these paths by locating the Si824x as close to the device it is driving as possible.
In addition, the VDD supply and ground trace paths must be kept short. For this reason, the use of power and
ground planes is highly recommended. A split ground plane system having separate ground and VDD planes for
power devices and small signal components provides the best overall noise performance.
3.7. Undervoltage Lockout Operation
Device behavior during start-up, normal operation and shutdown is shown in Figure 34, where UVLO+ and UVLO-
are the positive-going and negative-going thresholds respectively. Note that outputs VOA and VOB default low
when input side power supply (VDDI) is not present.
3.7.1. Device Startup
Outputs VOA and VOB are held low during power-up until VDD is above the UVLO threshold for time period
tSTART. Following this, the outputs follow the states of inputs VIA and VIB.
3.7.2. Undervoltage Lockout
Undervoltage Lockout (UVLO) is provided to prevent erroneous operation during device startup and shutdown or
when VDD is below its specified operating circuits range. The input (control) side, Driver A and Driver B, each have
their own undervoltage lockout monitors.
The Si824x input side enters UVLO when VDDI < VDDIUV–, and exits UVLO when VDDI > VDDIUV+. The driver
outputs, VOA and VOB, remain low when the input side of the Si824x is in UVLO and their respective VDD supply
(VDDA, VDDB) is within tolerance. Each driver output can enter or exit UVLO independently. For example, VOA
unconditionally enters UVLO when VDDA falls below VDDAUV– and exits UVLO when VDDA rises above
VDDAUV+.
Figure 34. Device Behavior during Normal Operation and Shutdown
PW M
VO A
DISABLE
VDDI
UVLO-
VDDA
tSTART
tSD
tRESTART
tPHL
tPLH
UVLO+
UVLO-
UVLO +
tSD
VDD HYS
VDDHYS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI8244BB-C-IS1R | 制造商:Silicon Laboratories Inc 功能描述:Class D Audio Driver 16-Pin SOIC N T/R 制造商:Silicon Laboratories Inc 功能描述:CLASS D AUDIO DRIVER - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC AUDIO DRIVER PWM 16-SOIC 制造商:Silicon Laboratories Inc 功能描述:2.5kV 4A "D" Audio Drvr 8V UVLO PWM in 制造商:Silicon Laboratories 功能描述:Class D Audio Driver 16-Pin SOIC N T/R |
| SI8244BB-D-IS1 | 功能描述:IC AUDIO DRIVER PWM 16-SOIC 制造商:silicon labs 系列:- 包装:管件 零件状态:有效 功能:线路驱动器 应用:前置放大器 通道数:2 接口:模拟 电压 - 电源:4.5 V ~ 5.5 V 工作温度:-40°C ~ 125°C（TA） 规格:D 类 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商器件封装:16-SOIC 标准包装:48 |
| Si8244CB-B-IS1 | 功能描述:音频放大器 2.5kV 4A Class D Audio Drivr 10V UVLO 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 |
| Si8244CB-C-IS1 | 功能描述:音频放大器 2.5kV 4A Class D Audio Drivr 10V UVLO 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 |
| SI8244CB-C-IS1R | 制造商:Silicon Laboratories Inc 功能描述:CLASS D AUDIO DRIVER - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC AUDIO DRIVER PWM 16-SOIC 制造商:Silicon Laboratories Inc 功能描述:2.5kV 4A "D" Audio 10V UVLO PWM input |
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