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參數(shù)資料
| 型號： | LP3972 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Power Management Unit for Advanced Application Processors |
| 中文描述： | 電源管理單元的高級應(yīng)用處理器 |
| 文件頁數(shù)： | 51/59頁 |
| 文件大?。?/td> | 1072K |
| 代理商： | LP3972 |
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LP3972 Controls
(Continued)
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 system may then negotiate for speed and power trade
off, or deploy cooling maneuvers to optimize system perfor-
mance. 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 fac-
tory 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
μA, are always enabled to operate the “T=125C warning
flag with hysteresis. This allows continuous monitoring of a
thermal-warning flag feature with very low power consump-
tion.
LP3972 THERMAL FLAGS FUNCTIONAL DIAGRAM,
DATA FROM INITIAL SILICON
The following functions are extra features from the thermal
shutdown circuit:
20207646
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3972_08 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit for Advanced Application Processors |
| LP3972SQ-0514/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-5810/NOPB | 功能描述:監(jiān)控電路 Pwr Mgmt Unit RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(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 |
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