参数资料
型号: ADT7476AARQZ-RL7
厂商: ON Semiconductor
文件页数: 34/66页
文件大小: 945K
描述: IC REMOTE THERMAL CTLR 24-QSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
QSOP 24ld Pkg (MSL) Change 17/Jun/2010
Product Discontinuation 30/Sept/2011
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 ~ 125°C
精确度: ±2.5%
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:
输出风扇:
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 125°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)
ADT7476A
http://onsemi.com
34
Recommended Implementation 2
Configuring the ADT7476A as shown in Figure 50
provides the system designer with the following features:
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> Six VID inputs (VID0, VID1, VID2, VID3, VID4, and
VID6) for VRM10 support.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> Three PWM outputs for fan control of up to three fans.
All three fans can be individually controlled.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> Three TACH fan speed measurement inputs.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> V
CC
 measured internally through Pin 4.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> CPU core voltage measurement (V
CORE
).
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> 2.5 V measurement input used to monitor CPU current
(connected to V
COMP
 output of ADP316x VRM
controller). This is used to determine CPU power
consumption.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> 5.0 V measurement input.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> VRM temperature using local temperature sensor.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> CPU temperature measured using the Remote 1
temperature channel.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> Ambient temperature measured through the Remote 2
temperature channel.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> If not using VID5, it can be reconfigured as the 12 V
monitoring input.
?SPAN class="pst ADT7476AARQZ-R_2298076_3"> Bidirectional THERM
 pin allows the monitoring of
PROCHOT
 output/input from an Intel P4 processor,
for example, or can be used as an overtemperature
THERM
 output.
Figure 50. Recommended Implementation 2
CPU FAN
CPU
FRONT
CHASSIS
FAN
TACH2
ADT7476A
PWM3
REAR
CHASSIS
FAN
AMBIENT
TEMPERATURE
TACH3
D1+
D1
GND
PWM1
TACH1
D2+
D2
ICH
SDA
SCL
THERM
PROCHOT
V
CC
+5V
IN
+12V
IN
/VID5
VID[0:4]/VID[0:5]
5(VRM9)/6(VRM10)
PWM2
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