參數(shù)資料
型號(hào)： LM96000CIMT
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 電源管理
英文描述： Hardware Monitor with Integrated Fan Control
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24
封裝： MO-153AD, TSSOP-24
文件頁(yè)數(shù)： 21/28頁(yè)
文件大?。?/td> 695K
代理商： LM96000CIMT
Functional Description
(Continued)
Register
Address
63h
Read/
Write
R/W
Register
Name
Zone2, Zone3 Spike Smoothing
Bit 7
(MSB)
ZN2E
Bit 6
Bit 5
Bit 4 Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
Lock
ZN2-2 ZN2-1 ZN2-0 ZN3E ZN3-2 ZN3-1 ZN3-0 00h
U
The Off/Min Bits [7:5] specify whether the duty cycle will be 0% or Minimum Fan Duty when the measured temperature falls below
the Temperature LIMIT register setting (see table below). OFF1 applies to fan 1, OFF2 applies to fan 2, and OFF3 applies to fan
3.
If the Remote1 or Remote2 pins are connected to a processor or chipset, instantaneous temperature spikes may be sampled by
the LM96000. If these spikes are not ignored, the CPU fan (if connected to LM96000) may turn on prematurely and produce
unpleasant noise. For this reason, any zone that is connected to a chipset or processor should have spike smoothing enabled.
When spike smoothing is enabled, the temperature reading registers will still reflect the current value of the temperature — not
the ‘smoothed out’ value.
ZN1E, ZN2E, and ZN3E enable temperature smoothing for zones 1, 2, and 3 respectively.
ZN1-2, ZN1-1, and ZN1-0 control smoothing time for Zone 1.
ZN2-2, ZN2-1, and ZN2-0 control smoothing time for Zone 2.
ZN3-2, ZN3-1, and ZN3-0 control smoothing time for Zone 3.
These registers become ready only when the Ready/Lock/Start/Override register Lock bit is set. Any further attempts to write to
these registers shall have no effect.
TABLE 7. Spike Smoothing
ZN-X[2:0]
000
001
010
011
100
101
110
111
Spike Smoothed Over
35 seconds
17.6 seconds
11.8 seconds
7.0 seconds
4.4 seconds
3.0 seconds
1.6 seconds
.8 seconds
TABLE 8. PWM Output Below Limit Depending on Value of Off/Min
Off/Min
0
1
PWM Action
At 0% duty below LIMIT
At Min PWM Duty below LIMIT
20084607
FIGURE 2. What LM96000 Auto Fan Control Sees With and Without Spike Smoothing
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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LM96000CIMT/NOPB 制造商:Texas Instruments 功能描述:Temperature Sensor IC
LM96000CIMTX 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
LM96000CIMTX/NOPB 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
LM96000EVAL/NOPB 功能描述:溫度傳感器開(kāi)發(fā)工具 LM96000 EVAL RoHS:否 制造商:Texas Instruments 產(chǎn)品類(lèi)型:Temperature Sensors and Control ICs 工具用于評(píng)估:MSP430G2553 接口類(lèi)型:USB 工作電源電壓: 工作電源電流:
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