onsemi ADT7473
THE ADT7473−1 GND Figure 1.FEATURES
● 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 TMIN Control Mode Intelligently Optimizes System Acoustics
● Automatic Fan Speed Control Mode Controls 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
● 3-wire and 4-wire Fan Speed Measurement
● Limit Comparison of All Monitored Values
● Meets SMBus 2.0
ELECTRICAL SPECIFICATIONS
(Fully SMBus 1.1 Compliant)● These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant QSOP−16 CASE 492 PIN ASSIGNMENTS SCL 1 GND 2 VCC 3 TACH3 PWM2/ SMBALERT TACH1 4 5 6 TACH2 7 PWM3 8 ADT7473 (Top View) 16 SDA 15 PWM1/XT...