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| 型号： | ADT7468ARQZ-RL7 |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/81页 |
| 文件大小： | 0K |
| 描述： | IC REMOTE THERMAL CTLR 24QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Obsolescence 11/Feb/2009 |
| 标准包装： | 1,000 |
| 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： | ±2°C（最小值） |
| 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： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 包装： | 带卷 (TR) |
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dBCool ? Remote Thermal
Controller and Voltage Monitor
ADT7468
FEATURES
Monitors up to 5 voltages
Controls and monitors up to 4 fans
High and low frequency fan drive signal
1 on-chip and 2 remote temperature sensors
Series resistance cancellation on the remote channel
Extended temperature measurement range, up to 191°C
Dynamic T MIN control mode intelligently optimizes system
acoustics
Automatic fan speed control mode manages system
cooling based on measured temperature
Enhanced acoustic mode dramatically reduces user
perception of changing fan speeds
Thermal protection feature via THERM output
Monitors performance impact of Intel? Pentium ? 4 processor
Thermal control circuit via THERM input
2-wire, 3-wire, and 4-wire fan speed measurement
Limit comparison of all monitored values
GENERAL DESCRIPTION
The ADT7468 dBCool controller is a thermal monitor and
multiple PWM fan controller for noise sensitive or power
sensitive applications requiring active system cooling. The
ADT7468 can drive a fan using either a low or high frequency
drive signal, monitor the temperature of up to two remote
sensor diodes plus its own internal temperature, and measure
and control the speed of up to four fans, so that they operate at
the lowest possible speed for minimum acoustic noise.
The automatic fan speed control loop optimizes fan speed for a
given temperature. A unique, dynamic T MIN control mode
enables the system thermals/acoustics to be intelligently
managed. The effectiveness of the system’s thermal solution can
be monitored using the THERM input. The ADT7468 also
provides critical thermal protection to the system using the
bidirectional THERM pin as an output to prevent system or
component overheating.
Meets SMBus 2.0 electrical specifications
(fully SMBus 1.1-compliant)
FUNCTIONAL BLOCK DIAGRAM
VID5
VID4
SCL
SDA SMBALERT
VID3
VID2
VID1
ACOUSTIC
ENHANCEMENT
CONTROL
SERIAL BUS
INTERFACE
VID0
PWM1
PWM2
PWM REGISTERS
AND
CONTROLLERS
ACOUSTIC
ENHANCEMENT
CONTROL
AUTOMATIC
FAN SPEED
CONTROL
ADDRESS
POINTER
REGISTER
PWM3
HF & LF
TACH1
DYNAMIC
T MIN
CONTROL
PWM
CONFIGURATION
REGISTERS
TACH2
TACH3
TACH4
FAN SPEED
COUNTER
PERFORMANCE
MONITORING
INTERRUPT
MASKING
THERM
THERMAL
PROTECTION
INTERRUPT
STATUS
V CC
V CC TO ADT7468
ADT7468
REGISTERS
D1+
D1–
D2+
D2–
SRC
INPUT
10-BIT
ADC
LIMIT
COMPARATORS
+5V IN
+12V IN
+2.5V IN
V CCP
SIGNAL
CONDITIONING
AND
ANALOG
MULTIPLEXER
BAND GAP
REFERENCE
VALUE AND
LIMIT
REGISTERS
BAND GAP
?2010 SCILLC. All rights reserved.
May 2010 – Rev. 3
TEMP SENSOR
GND
Figure 1.
Publication Order Number:
ADT7468/D
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相关代理商/技术参数 |
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|---|---|
| ADT7468ZEVB | 功能描述:BOARD EVAL FOR ADT7468 RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| ADT7470 | 制造商:AD 制造商全称:Analog Devices 功能描述:Temperature Sensor Hub and Fan Controller |
| ADT7470_13 | 制造商:AD 制造商全称:Analog Devices 功能描述:Temperature Sensor Hub and Fan Controller |
| ADT7470ARQ | 制造商:Analog Devices 功能描述:Temp Sensor Digital Serial (I2C) 16-Pin QSOP |
| ADT7470ARQ-REEL | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
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