參數(shù)資料
型號(hào)： LP3972SQ-5810
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40
封裝： 5 X 5 MM, LLP-40
文件頁(yè)數(shù)： 47/60頁(yè)
文件大?。?/td> 1171K
代理商： LP3972SQ-5810
THERMAL MANAGEMENT
Application: There is a mode wherein all 6 comparators (flags)
can be turned on via the “enallflags” control register bit. This
mode allows the user to interrogate the device or system
temperature under the set operating conditions. Thus, the
rate of temperature change can also be estimated. The sys-
tem may then negotiate for speed and power trade off, or
deploy cooling maneuvers to optimize system performance.
The “enallflags” bit needs enabled only when the “bct<2:0>
bits are read to conserve power.
Note:
The thermal management flags have been verified
functional. Presently these registers are accessible by factory
only. If there is a demand for this function, the relevant register
controls may be shifted into the user programmable bank; the
temperature range and resolution of these flags, might also
be refined/redefined.
THERMAL WARNING
2 of 6 low power comparators, each consumes less than 1
A, are always enabled to operate the “T=125°C warning flag
with hysteresis. This allows continuous monitoring of a ther-
mal-warning flag feature with very low power consumption.
LP3972 THERMAL FLAGS FUNCTIONAL DIAGRAM,
DATA FROM INITIAL SILICON
The following functions are extra features from the thermal
shutdown circuit:
20207646
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www.national.com
LP3972
相關(guān)PDF資料
PDF描述
LP3972SQXE514 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40
LPB48DP 2-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE
LPB24DP 2-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE
LPB15SP 1-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE
LPB24SP 1-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP3972SQ-5810/NOPB 功能描述:監(jiān)控電路 Pwr Mgmt Unit RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
LP3972SQ-A413 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
LP3972SQ-A413/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
LP3972SQ-A514 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
LP3972SQ-A514/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
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