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參數(shù)資料
| 型號： | PM6641 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, QCC48 |
| 封裝： | 7 X 7 MM, 1 MM HEIGHT, LEAD FREE, VQFP-48 |
| 文件頁數(shù)： | 35/47頁 |
| 文件大?。?/td> | 2254K |
| 代理商： | PM6641 |
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Components selection
PM6641
40/47
Doc ID 13510 Rev 3
8.5
Layout guidelines
Each signal is referred to AGND, the analog ground. In a typical 4-layers PCB one internal
layer should be dedicated to this common ground. The IC thermal pad must be connected to
AGND plane through multiple VIAs, in order to remove the IC heat and to obtain the best
performance. Furthermore, each switching regulator has a dedicated power ground
(SGND_1Sxx); all these SGNDs must be star-connected, in a single point, with AGND.
For each switching section the power components (inductor and input/output capacitors)
must be placed near the VSW_1Sxx, VIN_1Sxx and SGND_1Sxx pins and connected with
large (at least 20 mils or larger) and short PCB traces, in order to limit the path of the current
high frequency components and, consequently, to reduce the injected noise. If the power
components routing involves more than one layer, as many VIAs as possible must be
inserted to reduce the series resistance and improve the global efficiency.
The VTT external components (input and output capacitors) must be placed near the LDO
regulator input (LDOIN) and output (VTT) pins, and must be routed with large and short
traces, in order to limit the parasitic series resistance.
The feedback pins (VFB_1Sxx and VTTFB) must reach the feedback points through
dedicated PCB traces, typically 10 mils width; larger feedback traces are not required.
For reference layout, refer to PM6641 demonstration kit document.
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| PM6670ASTR | 3 A SWITCHING CONTROLLER, QCC24 |
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| PM6670STR | 3 A SWITCHING CONTROLLER, QCC24 |
| PM6670S | 3 A SWITCHING CONTROLLER, QCC24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PM6641TR | 功能描述:低壓差穩(wěn)壓器 - LDO Monolithic VR RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| PM6644 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 350mA adjust SD reg 4.5V to 25V 350mA RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| PM6644TR | 功能描述:DC/DC 開關(guān)控制器 350 mA adj step-down 4.5 to 25V -40, 150c RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| PM6650 | 制造商:Qualcomm 功能描述:Electronic Component |
| PM6652 | 功能描述:DC/DC 開關(guān)控制器 Single Phase CNTR Intel MVP 6.5 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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