參數(shù)資料
型號(hào)： ADM1029ARQZ-R7
廠商： ON Semiconductor
文件頁數(shù)： 19/50頁
文件大?。?/td> 402K
描述： IC SENSOR 2TEMP/FAN CTRL 24QSOP
產(chǎn)品變化通告： QSOP 24ld Pkg (MSL) Change 17/Jun/2010
標(biāo)準(zhǔn)包裝： 1,000
功能： 風(fēng)扇控制，溫度監(jiān)控器
傳感器類型： 內(nèi)部和外部
感應(yīng)溫度： 0°C ~ 100°C，外部傳感器
精確度： ±1°C 本地，±3°C 遠(yuǎn)程
拓?fù)洌?/td> ADC，風(fēng)扇控制，寄存器庫
輸出類型： 開路漏極
輸出警報(bào)： 是
輸出風(fēng)扇： 是
電源電壓： 3 V ~ 5.5 V
工作溫度： 0°C ~ 100°C
安裝類型： 表面貼裝
封裝/外殼： 24-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 24-QSOP
包裝： 帶卷 (TR)
ADM1029
http://onsemi.com
19
The T
RANGE
 parameter actually defines the fan
speed versus temperature slope of the control loop.
3. T
MAX
. This is defined as the temperature at which
a fan will be at its maximum speed. At this
temperature, the PWM duty cycle driving the fan
will be 100%. T
MAX
 is given by T
MIN
 + T
RANGE
.
Since this parameter is the sum of the T
MIN
 and
T
RANGE
 parameters, it does not need to be
programmed into a register on-chip.
4. Programmable hysteresis is included in the control
loop to prevent the fans continuously switching on
and off if the temperature is close to T
MIN
. The
fans will continue to run until such time as the
temperature drops below T
MIN
T
HYST
. The four
MSBs of the T
RANGE
/T
HYST
 registers (Registers
0x88, 0x89, 0x8A) contain a temperature
hysteresis value that can be programmed from
0001 to 1111. This allows a temperature hysteresis
range from 1癈 to 15癈 for each temperature
measurement channel.
33
40
47
53
60
66
73
80
87
93
100
Figure 30. PWM Duty Cycle vs. Temperature Slopes
(T
RANGE
)
TEMPERATURE (癈)
T
MAX
 = T
MIN
 + T
RANGE
T
MIN
0  5  10    20
40
60
80
A
B
C
D
E
A  T
RANGE
 = 5癈
B  T
RANGE
 = 10癈
C  T
RANGE
 = 20癈
D  T
RANGE
 = 40癈
E  T
RANGE
 = 80癈
Figure 30 shows the different control slopes determined
by the T
RANGE
 value chosen, and programmed in to the
ADM1029. T
MIN
 was set to 0癈 to start all slopes from the
same point. It can be seen how changing the T
RANGE
 value
affects the PWM Duty Cycle vs. Temperature Slope.
Figure 31 shows how for a given T
RANGE
, changing the
T
MIN
 value affects the loop. Increasing the T
MIN
 value will
increase the T
MAX
 (temperature at which the fan runs full
speed)   value,   since   T
MAX
= T
MIN
+ T
RANGE
.   Note,
however, that the PWM Duty Cycle versus Temperature
slope remains exactly the same. Changing the T
MIN
 value
merely shifts the control slope.
33
40
47
53
60
66
73
80
87
93
100
Figure 31. Effect of Increasing T
MIN
 Value on Control
Loop
TEMPERATURE (癈)
T
MAX
 = T
MIN
 + T
RANGE
T
MIN
0  5  10    20
40
60
80
A
A  T
RANGE
 = 40癈
B  T
RANGE
 = 40癈
C  T
RANGE
 = 40癈
B
C
Fan Spin-up
As previously mentioned, once the temperature being
measured exceeds the T
MIN
 value programmed, the fan will
turn on at minimum speed (default = 33% duty cycle).
However, the problem with fans being driven by PWM is
that 33% duty cycle is not enough to reliably start the fan
spinning. The solution is to spin the fan up for a
predetermined time, and once the fan has spun up, its
running speed may be reduced in line with the temperature
being measured.
The ADM1029 allows fan spin-up times between 1/64
second and 16 seconds. The Fan Spin-up Register (Register
0x0C) allows the spin-up time for the fans to be
programmed. Bit 3 of this register, when set, disables fan
spin-up for both fans.
Table 10. FAN SPIN-UP TIMES
Bits 2:0
Spin-up Times
(Fan Spin-up Register)
000
16 Seconds
001
8 Seconds
010
4 Seconds
011
2 Seconds (Default)
100
1 Second
101
1/4 Second
110
1/16 Second
111
1/64 Second
Once the Automatic Fan Speed Control Loop parameters
have been chosen, the ADM1029 device may be
programmed. The ADM1029 is placed into Automatic Fan
相關(guān)PDF資料
PDF描述
ADM1030ARQZ-RL7 IC SNSR TEMP/FAN PWM CTRL 16QSOP
ADM1032ARZ-REEL IC TEMP MONITOR 85DEG 8SOIC
ADM1033ARQZ-RL7 IC THERM/FAN SPEED CTLR 16-QSOP
ADM1034ARQZ-REEL IC THERM/FAN SPEED CTRLR 16-QSOP
ADN8810ACPZ-REEL7 IC CURRENT SOURCE(12BIT) 24LFCSP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADM1030 制造商:AD 制造商全稱:Analog Devices 功能描述:Intelligent Temperature Monitor and PWM Fan Controller
ADM1030ARQ 功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報(bào):無 輸出風(fēng)扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1030ARQ-REEL 功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報(bào):無 輸出風(fēng)扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1030ARQ-REEL7 功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報(bào):無 輸出風(fēng)扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1030ARQZ 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 TDM & PWM FAN CNTRLRS IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*