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| 型号： | MAX6649MUA/V+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/16页 |
| 文件大小： | 194K |
| 描述： | IC SENSOR REMOTE SMBUS 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部和外部 |
| 感应温度： | -55°C ~ 125°C，外部传感器 |
| 精确度： | ±3°C 本地（最大），±3.2°C 远程（最大） |
| 拓扑： | ADC，多路复用器，寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
General Description
The MAX6646/MAX6647/MAX6649 are precise, two-
channel digital temperature sensors. The devices accu-
rately measure the temperature of their own die and a
remote PN junction, and report the temperature in digital
form using a 2-wire serial interface. The remote PN junc-
tion is typically the emitter-base junction of a common-
collector PNP on a CPU, FPGA, or ASIC.
The 2-wire serial interface accepts standard system man-
agement bus (SMBus) write byte, read byte, send byte,
and receive byte commands to read the temperature
data and to program the alarm thresholds. To enhance
system reliability, the MAX6646/MAX6647/MAX6649
include an SMBus timeout. A fault queue prevents the
ALERT and OVERT outputs from setting until a fault has
been detected one, two, or three consecutive times
(programmable).
The MAX6646/MAX6647/MAX6649 provide two system
alarms: ALERT and OVERT. ALERT asserts when any of
four temperature conditions are violated: local overtem-
perature, remote overtemperature, local undertempera-
ture, or remote undertemperature. OVERT asserts when
the temperature rises above the value in either of the two
OVERT limit registers. The OVERT output can be used to
activate a cooling fan, or to trigger a system shutdown.
Measurements can be done autonomously, at the pro-
grammed conversion rate, or in a single-shot mode. The
adjustable conversion rate allows optimizing supply cur-
rent and temperature update rate to match system needs.
Remote accuracy is ?癈 maximum error between +60癈
and +145癈 with no calibration needed. The MAX6646/
MAX6647/MAX6649 operate from -55癈 to +125癈, and
measure temperatures between 0癈 and +145癈. The
MAX6646/MAX6647/MAX6649 are available in an 8-pin
糓AX
?/DIV>
package.
Applications
Features
f Dual Channel: Measures Remote and Local
Temperature
f 0.125?/SPAN>C Resolution
f High Accuracy ?/SPAN>1?/SPAN>C (max) from +60?/SPAN>C to +145?/SPAN>C
(Remote), and ?癈 (max) from +60癈 to +100癈
(Local)
f Measures High-Ideality Thermal Diodes Up to
+170癈 (Apparent)
+145癈 (Real)
f Two Alarm Outputs: ALERT and OVERT
f Programmable Under/Overtemperature Alarm
Temperature Thresholds
f Programmable Conversion Rate
f SMBus-Compatible Interface
f SMBus Timeout
+145癈 Precision SMBus-Compatible Remote/
Local Sensors with Overtemperature Alarms
Ordering Information
V
CC
DXP
DXN
10k?EACH
CLOCK
TO FAN DRIVER OR
SYSTEM SHUTDOWN
3.3V
DATA
INTERRUPT TO 糚
200?/DIV>
0.1糉
SDA
SCLK
ALERT
GND
2200pF
糚
MAX6646
MAX6647
MAX6649
OVERT
Typical Operating Circuit
19-2540; Rev 4; 7/12
1
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.
PART
TEMP
RANGE
PIN-
PACKAGE
MEASURED
TEMP RANGE
MAX6646MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
MAX6647MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
MAX6649MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
Selector Guide, Pin Configurations, and Functional Diagram
appear at end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
糓AX is a registered trademark of Maxim Integrated Products, Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6649YMUA+ | 功能描述:板上安装温度传感器 145C SMBus-Comp Remote/Local Sensor 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 |
| MAX6649YMUA+T | 功能描述:板上安装温度传感器 145C SMBus-Comp Remote/Local Sensor 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 |
| MAX664C/D | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX664CJA | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX664CPA | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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