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ADM1030 PDF预览

ADM1030

更新时间: 2024-01-24 23:48:53
品牌 Logo 应用领域
安森美 - ONSEMI 风扇监控控制器
页数 文件大小 规格书
29页 558K
描述
Intelligent Temperature Monitor and PWM Fan Controller

ADM1030 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Transferred包装说明:MO-137AB, QSOP-16
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.18
Is Samacsys:N最大精度(摄氏度):1 Cel
主体宽度:3.91 mm主体高度:1.44 mm
主体长度或直径:4.9 mm外壳:PLASTIC
JESD-609代码:e3安装特点:SURFACE MOUNT
位数:8最大工作电流:3 mA
最高工作温度:100 °C最低工作温度:
输出接口类型:2-WIRE INTERFACE封装形状/形式:RECTANGULAR
传感器/换能器类型:TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL最大供电电压:5.5 V
最小供电电压:3 V表面贴装:YES
端子面层:Matte Tin (Sn)端接类型:SOLDER
Base Number Matches:1

ADM1030 数据手册

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Intelligent Temperature  
Monitor and PWM Fan Controller  
ADM1030*  
FEATURES  
PRODUCT DESCRIPTION  
Optimized for Pentium® III: Allows Reduced Guardbanding  
Software and Automatic Fan Speed Control  
Automatic Fan Speed Control Allows Control Independent  
of CPU Intervention after Initial Setup  
Control Loop Minimizes Acoustic Noise and Battery  
Consumption  
Remote Temperature Measurement Accurate to 1C  
Using Remote Diode  
0.125C Resolution on Remote Temperature Channel  
Local Temperature Sensor with 0.25C Resolution  
Pulsewidth Modulation Fan Control (PWM)  
Programmable PWM Frequency  
Programmable PWM Duty Cycle  
Tach Fan Speed Measurement  
Analog Input To Measure Fan Speed of 2-Wire Fans  
(Using Sense Resistor)  
2-Wire System Management Bus (SMBus) with ARA  
Support  
The ADM1030 is an ACPI-compliant two-channel digital ther-  
mometer and under/over temperature alarm, for use in computers  
and thermal management systems. Optimized for the Pentium  
III, the higher 1rC accuracy offered allows systems designers to  
safely reduce temperature guardbanding and increase system  
performance. A Pulsewidth Modulated (PWM) Fan Control out-  
put controls the speed of a cooling fan by varying output duty  
cycle. Duty cycle values between 33%–100% allow smooth  
control of the fan. The speed of the fan can be monitored via a  
TACH input for a fan with a tach output. The TACH input can  
be programmed as an analog input, allowing the speed of a 2-wire  
fan to be determined via a sense resistor. The device will also  
detect a stalled fan. A dedicated Fan Speed Control Loop pro-  
vides control even without the intervention of CPU software. It  
also ensures that if the CPU or system locks up, the fan can still  
be controlled based on temperature measurements, and the fan  
speed adjusted to correct any changes in system temperature.  
Fan Speed may also be controlled using existing ACPI software.  
One input (two pins) is dedicated to a remote temperature-  
sensing diode with an accuracy of ±1rC, and a local temperature  
sensor allows ambient temperature to be monitored. The device  
has a programmable INT output to indicate error conditions.  
There is a dedicated FAN_FAULT output to signal fan failure.  
The THERM pin is a fail-safe output for over-temperature  
conditions that can be used to throttle a CPU clock.  
Overtemperature THERM Output Pin  
Programmable INT Output Pin  
Configurable Offset for All Temperature Channels  
3 V to 5.5 V Supply Range  
Shutdown Mode to Minimize Power Consumption  
APPLICATIONS  
Notebook PCs, Network Servers and Personal Computers  
Telecommunications Equipment  
FUNCTIONAL BLOCK DIAGRAM  
V
CC  
ADD  
SDA  
SCL  
SERIAL BUS  
INTERFACE  
SLAVE  
ADM1030  
ADDRESS  
NC  
REGISTER  
ADDRESS  
POINTER  
REGISTER  
FAN  
NC  
NC  
CHARACTERISTICS  
REGISTER  
INT  
FAN SPEED  
PWM  
INTERRUPT  
STATUS  
REGISTER  
THERM  
CONFIG  
PWM_OUT  
CONTROLLER  
REGISTER  
FAN_FAULT  
T
/T  
MIN RANGE  
LIMIT  
COMPARATOR  
REGISTER  
FAN  
TACH SIGNAL  
CONDITIONING  
TACH/AIN  
SPEED  
VALUE AND LIMIT  
REGISTERS  
COUNTER  
D+  
D–  
NC  
OFFSET  
REGISTERS  
ANALOG  
MULTIPLEXER  
ADC  
BANDGAP  
TEMPERATURE  
SENSOR  
CONFIGURATION  
REGISTER  
2.5V  
BANDGAP  
REFERENCE  
*Patents pending.  
NC = NO CONNECT  
GND  
E
.
©2008 SCILLC. All rights reserved.  
February 2008 - Rev. 2  
Publication Order Number:  
ADM1030/D  

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