onsemi ADT7473ARQZ-REEL

The ADT7473/ADT7473−1 is a complete thermal monitor and multiple fan controller for any system requiring thermal monitoring and cooling. The device communicates with the system via a serial system management bus. The serial bus controller has a serial data line for reading and writing addresses and data (Pin 16), and an input line for the serial clock (Pin 1). All control and programming functions for the ADT7473/ADT7473−1 are performed over the serial bus. Additionally, a pin can be reconfigured as an SMBALERT output to signal out-of-limit conditions.

• 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