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参数资料
| 型号： | MAX6640YAEE+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | 2-Channel Temperature Monitor with Dual Automatic PWM Fan-Speed Controller |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | 0.150 INCH, 0.025 INCH PITCH, ROHS COMPLIANT, MO-137AB, QSOP-16 |
| 文件页数： | 1/24页 |
| 文件大小： | 428K |
| 代理商： | MAX6640YAEE+ |
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 500A 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
MAX6640
2-Channel Temperature Monitor with Dual
Automatic PWM Fan-Speed Controller
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-3344; Rev 0; 8/04
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.
EVALUATION
KIT
AVAILABLE
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
VCC
DXP2
DXN
GND
DXP1
TOP VIEW
MAX6640
QSOP
TACH1
PWM2
TACH2
VCC
FANFAIL
THERM
OT
ALERT
PWM2
1
TACH2
2
3
4
FANFAIL
THERM
12
VCC
11
10
9
DXP2
DXN
5
V
CC
6
7
8
GND
DXP1
OT
16
PWM1
15
14
13
SDA
SCL
TACH1
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.
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6640YAEE+T | 2-Channel Temperature Monitor with Dual Automatic PWM Fan-Speed Controller |
| MAX6640AEE+ | 2-Channel Temperature Monitor with Dual Automatic PWM Fan-Speed Controller |
| MAX6641AUB90+ | SMBus-Compatible Temperature Monitor with Automatic PWM Fan-Speed Controller |
| MAX6641AUB90+T | SMBus-Compatible Temperature Monitor with Automatic PWM Fan-Speed Controller |
| MAX6641AUB92+ | SMBus-Compatible Temperature Monitor with Automatic PWM Fan-Speed Controller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6640YAEE+ | 功能描述:板上安装温度传感器 Sensors, Transducers RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6640YAEE+T | 功能描述:板上安装温度传感器 Sensors, Transducers RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6641AUB90 | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6641AUB90+ | 功能描述:板上安装温度传感器 SMBus-Compatible Temperature Monitor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6641AUB90+T | 功能描述:板上安装温度传感器 SMBus-Compatible Temperature Monitor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
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