參數(shù)資料
型號： MAX6640
廠商： Maxim Integrated Products, Inc.
英文描述： 2-Channel Temperature Monitor with Dual Automatic PWM Fan-Speed Controller
中文描述： 2通道溫度監(jiān)測器，提供雙路、PWM風扇速度自動控制器
文件頁數(shù)： 1/22頁
文件大?。?/td> 724K
代理商： MAX6640
General Description
The MAX6640 monitors its own temperature and one
external diode-connected transistor or the temperatures
of two external diode-connected transistors, typically
available in CPUs, FPGAs, or GPUs. The 2-wire serial
interface accepts standard System Management Bus
(SMBus)
TM
write byte, read byte, send byte, and
receive byte commands to read the temperature data
and program the alarm thresholds. Temperature data
can be read at any time over the SMBus, and three pro-
grammable alarm outputs can be used to generate
interrupts, throttle signals, or overtemperature shut-
down signals.
The temperature data is also used by the internal dual
PWM fan-speed controller to adjust the speed of up to
two cooling fans, thereby minimizing noise when the
system is running cool, but providing maximum cooling
when power dissipation increases. Speed control is
accomplished by tachometer feedback from the fan, so
that the speed of the fan is controlled, not just the PWM
duty cycle. Accuracy of speed measurement is
±
4%.
The MAX6640 is available in 16-pin QSOP and 16-pin
TQFN 5mm x 5mm packages. It operates from 3.0V to
5.5V and consumes just 500μA of supply current.
Applications
Desktop Computers
Notebook Computers
Workstations
Servers
Networking Equipment
Features
Two Thermal-Diode Inputs
Local Temperature Sensor
1°C Remote Temperature Accuracy (+60°C to
+100°C)
Two PWM Outputs for Fan Drive (Open Drain; can
be Pulled Up to +13.5V)
Programmable Fan-Control Characteristics
Automatic Fan Spin-Up Ensures Fan Start
Controlled Rate-of-Change Ensures Unobtrusive
Fan-Speed Adjustments
±4% Fan-Speed Measurement Accuracy
Temperature Monitoring Begins at POR for Fail-
Safe System Protection
OT
and
THERM
Outputs for Throttling or
Shutdown
Measures Temperatures Up to +150°C
Tiny 5mm x 5mm 16-Pin TQFN and QSOP
Packages
Ordering Information
M
2-Channel Temperature Monitor with Dual
Automatic PWM Fan-Speed Controller
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
19-3344; Rev 0; 8/04
PART
OPERATING
RANGE
MEASUREMENT
RANGE
PIN-
PACKAGE
MAX6640AEE
-40
°
C to
+125
°
C
0°C to +150°C
16 QSOP
MAX6640ATE
-40
°
C to
+125
°
C
0°C to +150°C
16 TQFN
(5mm x
5mm)
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
PWM1
SCL
SDA
V
CC
DXP2
DXN
GND
DXP1
TOP VIEW
MAX6640
QSOP
TACH1
PWM2
TACH2
V
CC
FANFAIL
THERM
OT
ALERT
PWM2
1
TACH2
2
3
4
FANFAIL
THERM
12
V
CC
11
10
9
DXP2
DXN
5
V
C
6
7
8
G
D
O
16
P
15
14
13
S
S
T
ALERT
MAX6640
*CONNECT EXPOSED
PADDLE TO GND
5mm x 5mm THIN QFN
Pin Configurations
SMBus is a trademark of Intel Corp.
Typical Application Circuit appears at end of data sheet.
相關PDF資料
PDF描述
MAX6640AEE 2-Channel Temperature Monitor with Dual Automatic PWM Fan-Speed Controller
MAX6640ATE 2-Channel Temperature Monitor with Dual Automatic PWM Fan-Speed Controller
MAX6652 Temperature Sensor and System Monitor in a 10-Pin UMAX
MAX6652AUB Temperature Sensor and System Monitor in a 10-Pin UMAX
MAX6655 Dual Remote/Local Temperature Sensors and Four-Channel Voltage Monitors
相關代理商/技術參數(shù)
參數(shù)描述
MAX6640AEE 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
MAX6640AEE+ 功能描述:板上安裝溫度傳感器 Sensors, Transducers RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
MAX6640AEE+T 功能描述:板上安裝溫度傳感器 Sensors, Transducers RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
MAX6640AEE-T 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
MAX6640ATE 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*