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參數(shù)資料
| 型號(hào)： | ADM1027ARQZ-RL7 |
| 廠商： | ON Semiconductor |
| 文件頁(yè)數(shù)： | 50/56頁(yè) |
| 文件大?。?/td> | 1822K |
| 描述： | IC REMOTE THERMAL CTLR 24QSOP |
| 產(chǎn)品變化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation Notice 25/Aug/2008 Product Obsolescence 30/Sept/2009 |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 系列： | dBCool® |
| 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 ~ 105°C，外部傳感器 |
| 精確度： | ±1°C |
| 拓?fù)洌?/td> | ADC，比較器，風(fēng)扇速度計(jì)數(shù)器，多路復(fù)用器，寄存器庫(kù) |
| 輸出類型： | SMBus? |
| 輸出警報(bào)： | 無(wú) |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 105°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) |
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REV. A
50
ADM1027
Table XX. PWM Minimum Duty Cycle Registers
Register Address
R/W
Description
Power-On Default
0x64
Read/Write
PWM1 Minimum Duty Cycle
0x80 (50% duty cycle)
0x65
Read/Write
PWM2 Minimum Duty Cycle
0x80 (50% duty cycle)
0x66
Read/Write
PWM3 Minimum Duty Cycle
0x80 (50% duty cycle)
Bit
Name
Read/Write
Description
<7:0>
PWM Duty
Read/Write
These bits define the PWM
MIN
duty cycle for the PWMx output.
0x00 = 0% duty cycle (fan off)
0x40 = 25% duty cycle
0x80 = 50% duty cycle
0xFF = 100% duty cycle (fan full speed)
These registers become read-only when the ADM1027 is in automatic fan control mode.
Table XXI. T
MIN
Registers
Register Address
R/W
Description
Power-On Default
0x67
Read/Write
Remote 1 Temperature T
MIN
0x5A (90
o
C)
0x68
Read/Write
Local Temperature T
MIN
0x5A (90
o
C)
0x69
Read/Write
Remote 2 Temperature T
MIN
0x5A (90
o
C)
These are the T
MIN
registers for each temperature channel. When the temperature measured exceeds T
MIN
, the appropriate fan will
run at minimum speed and increase with temperature according to T
RANGE
.
These registers become read-only when the Configuration Register 1 lock bit is set. Any further attempts to write to these registers
will have no effect.
Table XXII. Therm Limit Registers
Register Address
R/W
Description
Power-On Default
0x6A
Read/Write
Remote 1 THERM Limit
0x64 (100
o
C)
0x6B
Read/Write
Local THERM Limit
0x64 (100
o
C)
0x6C
Read/Write
Remote 2 THERM Limit
0x64 (100
o
C)
If any temperature measured exceeds its THERM limit, all PWM outputs will drive their fans at 100% duty cycle. This is a fail-safe
mechanism incorporated to cool the system in the event of a critical overtemperature. It also ensures some level of cooling in the
event that software or hardware locks up. If set to 0x80, this feature is disabled. The PWM output will remain at 100% until the
temperature drops below THERM limit 4rC .
These registers become read-only when the Configuration Register 1 lock bit is set to 1. Any further attempts to write to these registers
will have no effect.
Table XXIII. Temperature Hysteresis Registers
Register Address
R/W
Description
Power-On Default
0x6D
Read/Write
Remote 1, Local Temperature Hysteresis
0x44
0x6E
Read/Write
Remote 2 Temperature Hysteresis
0x40
Each 4-bit value controls the amount of temperature hysteresis applied to a particular temperature channel. Once the temperature for
that channel falls below its T
MIN
value, the fan will remain running at PWM
MIN
duty cycle until the temperature = T
MIN
hysteresis.
Up to 15
o
C of hysteresis may be assigned to any temperature channel. Setting the hysteresis value lower than 4
o
C will cause the fan
to switch on and off regularly when the temperature is close to T
MIN
.
These registers become read-only when the Configuration Register 1 lock bit is set to 1. Any further attempts to write to these registers
will have no effect.
Rev. 3 | Page 50 of 56 | www.onsemi.com
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| ADM1027ARQZ-RL71 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:dBCOOLa?￠ Remote Thermal Controller and Voltage Monitor |
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| ADM1028ARQ | 功能描述:IC SENSOR TEMP/FAN 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(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 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 |
| ADM1028ARQ-REEL7 | 制造商:Rochester Electronics LLC 功能描述:TDM + LINEAR FAN CONTROL I.C. - Tape and Reel |
| ADM1029 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual PWM Fan Controller and Temperature Monitor for High Availability Systems |
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