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參數(shù)資料
| 型號(hào)： | MAX6645ABFAUB+T |
| 廠(chǎng)商： | Maxim Integrated |
| 文件頁(yè)數(shù)： | 1/17頁(yè) |
| 文件大小： | 208K |
| 描述： | IC CNTRLR FAN SPEED 10-UMAX |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 功能： | 風(fēng)扇控制，溫度監(jiān)控器 |
| 傳感器類(lèi)型： | 內(nèi)部和外部 |
| 感應(yīng)溫度： | -40°C ~ 125°C，外部傳感器 |
| 精確度： | ±3.5°C 本地（最大），±3°C 遠(yuǎn)程（最大） |
| 拓?fù)洌?/td> | ADC，PWM 發(fā)生器，轉(zhuǎn)速計(jì)計(jì)數(shù)器 |
| 輸出類(lèi)型： | PWM |
| 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： | -40°C ~ 125°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-uMAX |
| 包裝： | 帶卷 (TR) |
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General Description
The MAX6643/MAX6644/MAX6645 monitor temperature
and automatically adjust fan speed to ensure optimum
cooling while minimizing acoustic noise from the fan.
Each device measures two temperature locations.
The MAX6643/MAX6644/MAX6645 generate a PWM
waveform that drives an external power transistor, which
in turn modulates the fans power supply. The
MAX6643/MAX6644/MAX6645 monitor temperature and
adjust the duty cycle of the PWM output waveform to con-
trol the fans speed according to the cooling needs of the
system. The MAX6643 monitors its own die temperature
and an optional external transistors temperature, while the
MAX6644 and MAX6645 each monitor the temperatures
of one or two external diode-connected transistors.
The MAX6643 and MAX6644 have nine selectable trip
temperatures (in 5癈 increments). The MAX6645 is fac-
tory programmed and is not pin selectable.
All versions include an overtemperature output (OT).
OT can be used for warning or system shutdown. The
MAX6643 also features a FULLSPD input that forces the
PWM duty cycle to 100%. The MAX6643/MAX6644/
MAX6645 also feature a FANFAIL output that indicates
a failed fan. See the Selector Guide for a complete list
of each devices functions.
The MAX6643 and MAX6644 are available in a small
16-pin QSOP package and the MAX6645 is available in
a 10-pin 礛AX
?/DIV>
package. All versions operate from
3.0V to 5.5V supply voltages and consume 500礎(chǔ) (typ)
supply current.
Applications
Networking Equipment
Storage Equipment
Servers
Desktop Computers
Workstations
Features
f Simple, Automatic Fan-Speed Control
f Internal and External Temperature Sensing
f Detect Fan Failure Through Locked-Rotor Output,
Tachometer Output, or Fan-Supply Current
Sensing
f Multiple, 1.6% Output Duty-Cycle Steps for Low
Audibility of Fan-Speed Changes
f Pin-Selectable or Factory-Selectable Low-
Temperature Fan Threshold
f Pin-Selectable or Factory-Selectable High-
Temperature Fan Threshold
f Spin-Up Time Ensures Fan Start
f Fan-Start Delay Minimizes Power-Supply Load at
Power-Up
f 32Hz PWM Output
f Controlled Duty-Cycle Rate-of-Change Ensures
Good Acoustic Performance
f 2?SPAN class="pst MAX6643LBFAEE-_2292765_4">C Temperature-Measurement Accuracy
f FULLSPD/FULLSPD Input Sets PWM to 100%
f Pin-Selectable OT Output Threshold
f 16-Pin QSOP and 10-Pin ?/SPAN>MAX Packages
Automatic PWM Fan-Speed Controllers with
Overtemperature Output
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3305; Rev 2; 3/07
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxims website at www.maxim-ic.com.
E
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Pin Configurations, Typical Operating Circuit, and Selector
Guide appear at end of data sheet.
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX6643LBFAEE
-40癈 to +125癈 16 QSOP
E16-1
MAX6643LBBAEE
-40癈 to +125癈 16 QSOP
E16-1
MAX6644LBAAEE
-40癈 to +125癈 16 QSOP
E16-1
MAX6645ABFAUB -40?/SPAN>C to +125?/SPAN>C 10 ?/SPAN>MAX
U10-2
礛AX is a registered trademark of Maxim Integrated Products, Inc.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6645BAFAUB | 制造商:Maxim Integrated Products 功能描述:AUTOMATIC PWM FAN-SPEED CONTROLLERS WITH OVER - Rail/Tube |
| MAX6645BAFAUB+ | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Automatic PWM Fan Speed Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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 |
| MAX6645BAFAUB+T | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Automatic PWM Fan Speed Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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 |
| MAX6646MUA | 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(xiàn)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 |
| MAX6646MUA+ | 功能描述:板上安裝溫度傳感器 145C SMBus-Comp Remote/Local Sensor 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(xiàn)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 |
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