參數(shù)資料
型號(hào)： MAX6660AEE+T
廠(chǎng)商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： Remote-Junction Temperature-Controlled Fan-Speed Regulator with SMBus Interface
中文描述： SPECIALTY ANALOG CIRCUIT, PDSO16
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-16
文件頁(yè)數(shù)： 13/21頁(yè)
文件大?。?/td> 271K
代理商： MAX6660AEE+T
MAX6660
Remote-Junction Temperature-Controlled
Fan-Speed Regulator with SMBus Interface
20
______________________________________________________________________________________
the nature of the tachometer output (open collector,
totem pole) and the resultant levels and configure the
connection to the MAX6660. For a fan with an open
drain/collector output, a pullup resistor of typically 5k
must be connected between FAN and VFAN. Note how
many pulses per revolution are generated by the
tachometer output (this varies from model to model and
among manufacturers, though two pulses per revolu-
tion is the most common). Table 14 lists the representa-
tive fan manufacturers and the model they make
available with tachometer outputs.
Low-Speed Operation
Brushless DC fans increase reliability by replacing
mechanical commutation with electronic commutation.
By lowering the voltage across the fan to reduce its
speed, the MAX6660 is also lowering the supply volt-
age for the electronic commutation and tachometer
electronics. If the voltage supplied to the fan is lowered
too far, the internal electronics may no longer function
properly. Some of the following symptoms are possible:
The fan may stop spinning.
The tachometer output may stop generating a signal.
The tachometer output may generate more than two
pulses per revolution.
The problems that occur and the supply voltages at
which they occur depend on which fan is used. As
a rule of thumb, 12V fans can be expected to expe-
rience problems somewhere around 1/4 and 1/2
their rated speed.
Chip Information
TRANSISTOR COUNT: 22,142
PROCESS: BiCMOS
Table 14. Fan Manufacturers
MANUFACTURER
FAN MODEL OPTION
Comair Roton
All DC brushless models can be
ordered with optional tachometer
output.
EBM-Papst
Tachometer output optional on
some models.
NMB
All DC brushless models can be
ordered with optional tachometer
output.
Panasonic
Panaflo and flat unidirectional
miniature fans can be ordered with
tachometer output.
Sunon
Tachometer output optional on
some models.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
VFAN
TACH IN
STBY
SMBCLK
GAIN
SMBDATA
ALERT
ADDO
OVERT
TOP VIEW
MAX6660
QSOP
VCC
DXP
ADD1
DXN
FAN
PGND
AGND
Pin Configuration
相關(guān)PDF資料
PDF描述
MAX6661AEE+ Remote Temperature-Controlled Fan-Speed Regulator with SPI-Compatible Interface
MAX6661AEE+T Remote Temperature-Controlled Fan-Speed Regulator with SPI-Compatible Interface
MAX6663AEE+T Temperature Monitors and PWM Fan Controllers
MAX6664AEE+ Temperature Monitors and PWM Fan Controllers
MAX6680MEE+T ±1°C Fail-Safe Remote/Local Temperature Sensors with SMBus Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6660EVKIT 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
MAX6660EVSYS 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
MAX6661AEE 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
MAX6661AEE+ 功能描述:板上安裝溫度傳感器 Remote-Junction Fan-Speed Regulator 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
MAX6661AEE+T 功能描述:板上安裝溫度傳感器 Remote-Junction Fan-Speed Regulator 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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