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| 型号： | LP3972SQXA413 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40 |
| 封装： | 5 X 5 MM, LLP-40 |
| 文件页数： | 47/60页 |
| 文件大小： | 1171K |
| 代理商： | LP3972SQXA413 |
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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:
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LP3972
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LP3972SQX-A413 | 功能描述:PMIC 解决方案 RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| LP3972SQX-A413/NOPB | 功能描述:PMIC 解决方案 RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| LP3972SQXA514 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Power Management Unit for Advanced Application Processors |
| LP3972SQX-A514 | 功能描述:PMIC 解决方案 RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| LP3972SQX-A514/NOPB | 功能描述:PMIC 解决方案 RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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