onsemi ADT7475ARQZ-REEL

The ADT7475 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 ADT7475 are performed over the serial bus. In addition, 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
• Extended Temperature Measurement Range, Up to 191°C
• 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