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參數(shù)資料
| 型號(hào)： | SI8250-IM |
| 廠商： | SILICON LABORATORIES |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | DIGITAL POWER CONTROLLER |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, QCC28 |
| 封裝： | 5 X 5 MM, ROHS COMPLIANT, QFN-28 |
| 文件頁數(shù)： | 21/30頁 |
| 文件大?。?/td> | 932K |
| 代理商： | SI8250-IM |
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Si8250/1/2
Preliminary Rev. 0.8
21
6. Layout Considerations
The mixed-signal nature of the Si8250/1/2 mandates clean bias supplies and ground returns. It is best to provide
separate ground planes for analog, digital and power switch returns. These planes should tie together at only one
point to eliminate the possibility of circulating ground currents.
For best performance, the VDD supply should be decoupled from the main supply. The LQFP-32 package provides
the best noise performance because it has separate analog and digital VDD and ground inputs (AVDD, AGND). As
shown in Figure 9, the AVDD is decoupled by a filter consisting of a 1
resistor in series with a 500 mA, 40
ferrite bead and a parallel combination of a 10 uF with a 0.1 uF high-frequency bypass capacitor. All connections
should be kept as short as possible. The VDDA and GNDA should be connected into their respective ground
planes. The QFN-28 package shares analog and digital power with ground on the same pins. Power supply
decoupling is shown in Figure 10. Again, all connections should be kept as short as possible.
Figure 9. Power Supply Connections for LQFP-32 Package
Figure 10. Power Supply Connections for QFN-28 Package
AVDD
DVDD
Ferrite bead
500 mA, 40
0.1 uF
10 uF
Si8250/1/2
AGND
DGND
AGND
10 uF
0.1 uF
2.5 V
1
Keep trace
lengths as short
as possible
VDD
Ferrite bead
500 mA, 40
0.1 uF
10 uF
Si8250/1/2
GND
2.5 V
1
Keep trace
lengths as short
as possible
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| SI8250-IQ | DIGITAL POWER CONTROLLER |
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| SI8401DB-T1-E3 | P-Channel 20-V (D-S) MOSFET, Low-Threshold |
| SI8401DB | Single P-Channel MOSFET; |
| SI8402DB | 20-V N-Channel 1.8-V (G-S) MOSFET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI8250-IMR | 制造商:Silicon Laboratories Inc 功能描述:VOLT SUPERVISOR PWR SUPPLY 0.05V TO 0.8V 28QFN - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC DIGITAL PWR CONTROLLER 32LQFP 制造商:Silicon Laboratories Inc 功能描述:32K 28 Pin SMPS Controller |
| SI8250-IQ | 功能描述:電壓監(jiān)測(cè)器/監(jiān)控器 SMPS Controller RoHS:否 制造商:Texas Instruments 監(jiān)測(cè)電壓數(shù):2 監(jiān)測(cè)電壓:Adjustable 輸出類型:Open Drain 欠電壓閾值: 過電壓閾值: 準(zhǔn)確性:1 % 工作電源電壓:1.5 V to 6.5 V 工作電源電流:1.8 uA 最大工作溫度:+ 125 C 封裝 / 箱體:SON-6 安裝風(fēng)格:SMD/SMT |
| SI8250-IQR | 制造商:Silicon Laboratories Inc 功能描述:VOLT SUPERVISOR PWR SUPPLY 0.05V TO 0.8V 32LQFP - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC DIGITAL PWR CONTROLLER 32LQFP 制造商:Silicon Laboratories Inc 功能描述:32K 32 Pin SMPS Controller |
| SI8251 | 制造商:SILABS 制造商全稱:SILABS 功能描述:DIGITAL POWER CONTROLLER |
| SI8251-IM | 功能描述:功率驅(qū)動(dòng)器IC SMPS Controller RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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