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參數(shù)資料
| 型號： | LM26480SQX-BF/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.4 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, QCC24 |
| 封裝： | 4 X 4 MM, 0.80 MM HEIGHT, LLP-24 |
| 文件頁數(shù)： | 9/30頁 |
| 文件大?。?/td> | 2447K |
| 代理商： | LM26480SQX-BF/NOPB |
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NPOR with Counter Delay
30040406
The above diagram shows the simplest application of the
Power-On Reset, where both switcher enables are tied to-
gether. In Case 1, EN1 causes nPOR to transition LOW and
triggers the nPOR delay counter. If the power supply for
Buck2 does not come on within that period, nPOR will stay
LOW, indicating a power fail mode. Case 2 indicates the vice
versa scenario if Buck1 supply did not come on. In both cases
the nPOR remains LOW. Case 3 shows a typical application
of the Power-On Reset, where both switcher enables are tied
together. Even if RDY1 ramps up slightly faster than RDY2
(or vice versa), the nPOR signal will trigger a programmable
delay before going HIGH, as explained below.
17
www.national.com
LM26480
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM26484 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit |
| LM26484SQ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit |
| LM26484SQ/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LM26484SQE | 制造商:Texas Instruments 功能描述:Power Management Unit 24-Pin LLP EP T/R 制造商:Texas Instruments 功能描述:PMU MULTI FUNCTN PRINTERS 24LLP |
| LM26484SQE/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
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