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參數(shù)資料
| 型號： | LM26480SQ-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)： | 11/30頁 |
| 文件大?。?/td> | 2447K |
| 代理商： | LM26480SQ-BF/NOPB |
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NPOR Mask Window
30040408
In Case 1, we see that case where EN2 and RDY2 are initi-
ated after triggered programmable delay. To prevent the
nPOR being asserted again, a masked window (5 ms) counter
delay is triggered off the EN2 rising edge. NPOR is still held
HIGH for the duration of the mask, whereupon the nPOR sta-
tus afterwards will depend on the status of both RDY1 and
RDY2 lines.
In Case 2, we see the case where EN2 is initiated after the
RDY1 triggered programmable delay, but RDY2 never goes
HIGH (Buck2 never turns on). Normal operation operation of
nPOR occurs wilth respect to EN1 and RDY1, and the nPOR
signal is held HIGH for the duration of the mask window. We
see that nPOR goes LOW after the masking window has
timed out because it is now dependent on RDY1 and RDY2,
where RDY2 is LOW.
19
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LM26480
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM26480SQX-BF/NOPB | 2.4 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, QCC24 |
| LM2661M/NOPB | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8 |
| LM2660MMX/NOPB | SWITCHED CAPACITOR CONVERTER, 40 kHz SWITCHING FREQ-MAX, PDSO8 |
| LM2661MM/NOPB | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8 |
| LM2661MMX/NOPB | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM26480SQX-AA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Externally Programmable Dual High-Current Step-Down DC/DC and Dual Linear Regulators |
| LM26480SQX-AA/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LM26480SQX-BF | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Externally Programmable Dual High-Current Step-Down DC/DC and Dual Linear Regulators |
| LM26480SQX-BF/NOPB | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Externally Pgrm Dual Hi-Current SD DC/DC 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM26484 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit |
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