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| 型号： | ADT7467ARQ-REEL |
| 厂商： | ON Semiconductor |
| 文件页数： | 18/72页 |
| 文件大小： | 0K |
| 描述： | IC REMOTE THERMAL CTRLR 16-QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Obsolescence 11/Feb/2009 |
| 标准包装： | 2,500 |
| 系列： | dBCool® |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | -40°C ~ 120°C，外部传感器 |
| 精确度： | ±1.5°C |
| 拓扑： | ADC，比较器，风扇速度计数器，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 120°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
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ADT7467
Overtemperature Events
Overtemperature events on a temperature channel can be
automatically detected and dealt with in automatic fan speed
Table 17. TEMPERATURE LIMIT REGISTERS
Register Description
Default
control mode. Register 0x6A to Register 0x6C contain the
THERM temperature limits. When a temperature exceeds
its THERM temperature limit, all PWM outputs run at the
maximum PWM duty cycle (0x38, 0x39, 0x3A); therefore,
fans run at the fastest speed allowed and continue running at
this speed until the temperature drops below THERM minus
hysteresis. (This can be disabled by setting the BOOST bit
in Configuration Register 3, Bit 2, Register 0x78.) The
hysteresis value for that THERM temperature limit is the
value programmed into Register 0x6D and Register 0x6E
0x4E
0x4F
0x6A
0x50
0x51
0x6B
0x52
0x53
0x6C
Remote 1 Temperature Low Limit
Remote 1 Temperature High Limit
Remote 1 THERM Limit
Local Temperature Low Limit
Local Temperature High Limit
Local THERM Limit
Remote 2 Temperature Low Limit
Remote 2 Temperature High Limit
Remote 2 THERM Limit
0x01
0x7F
0xA4
0x01
0x7F
0xA4
0x01
0x7F
0xA4
(hysteresis registers). The default hysteresis value is 4 ? C.
THERM LIMIT
16-bit Limits
The fan TACH measurements are 16-bit results. The fan
TEMPERATURE
FANS
100%
HYSTERESIS
( ? C)
TACH limits are also 16 bits, consisting of a high byte and
low byte. Because slow or stalled fans are normally the only
conditions of interest, only high limits exist for fan TACHs.
Because the fan TACH period is measured, exceeding the
limit indicates a slow or stalled fan.
Table 18. FAN LIMIT REGISTERS
Figure 26. THERM Temperature Limit Operation
Limits, Status Registers, and Interrupts
Limit Values
High and low limits are associated with each
measurement channel on the ADT7467. These limits form
the basis of system-status monitoring in that a status bit can
be set for any out-of-limit condition and detected by polling
the device. Alternatively, SMBALERT interrupts can be
Register
0x54
0x55
0x56
0x57
0x58
0x59
0x5A
0x5B
Description
TACH1 Minimum Low Byte
TACH1 Minimum High Byte
TACH2 Minimum Low Byte
TACH2 Minimum High Byte
TACH3 Minimum Low Byte
TACH3 Minimum High Byte
TACH4 Minimum Low Byte
TACH4 Minimum High Byte
Default
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
generated to flag a processor or microcontroller of
out-of-limit conditions.
8-bit Limits
The following is a list of 8-bit limits on the ADT7467.
Table 15. VOLTAGE LIMIT REGISTERS
Out-of-Limit Comparisons
Once all limits are programmed, the ADT7467 can be
enabled for monitoring. The ADT7467 measures all voltage
and temperature measurements in round-robin format and
sets the appropriate status bit for out-of-limit conditions.
TACH measurements are not part of this round-robin cycle.
Register
0x46
0x47
0x48
0x49
Description
V CCP Low Limit
V CCP High Limit
V CC Low Limit
V CC High Limit
Default
0x00
0xFF
0x00
0xFF
Comparisons are done differently, depending on whether the
measured value is being compared to a high or low limit.
High limit: > comparison performed
Low limit: ? comparison performed
Voltage and temperature channels use a window
Table 16. THERM TIMER LIMIT REGISTERS
comparator for error detecting and, therefore, have high and
low limits. Fan speed measurements use only a low limit.
Register
0x7A
Description
THERM Timer Limit
Default
0x00
This fan limit is needed only in manual fan control mode.
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相关代理商/技术参数 |
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| ADT7467ARQ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 16-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 标准包装:1 系列:- 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:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
| ADT7467ARQZ | 功能描述:马达/运动/点火控制器和驱动器 FAN CNTRLR/INT MON RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| ADT7467ARQZ | 制造商:Analog Devices 功能描述:Temperature Sensor IC |
| ADT7467ARQZ-R7 | 功能描述:板上安装温度传感器 RMT THRM MON FAN CTL 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 |
| ADT7467ARQZ-REEL | 功能描述:板上安装温度传感器 FAN CNTRLR/INT MON 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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