General Description

The MAX6653/MAX6663/MAX6664 are ACPI-compliant local and remote-junction temperature sensors and fan

controllers. These devices measure their own die temperature, as well as the temperature of a remote-PN junction and control the speed of a DC cooling fan based on the measured temperature. Remote temperature measurement accuracy is ±1°C from +60°C to +100°C. Temperature measurement resolution is 0.125°C for both local and remote temperatures.

Features

♦Remote-Junction Temperature Sensor Within

  ±1°C Accuracy (+60°C to +100°C)

♦ACPI-Compatible Programmable Temperature Alarms

♦0.125°C Resolution Local and Remote-Junction Temperature Measurement

♦Programmable Temperature Offset for System Calibration

♦SMBus 2-Wire Serial Interface with Timeout

♦Automatic or Manual Fan-Speed Control

♦PWM Fan Control Output

♦Fan-Speed Monitoring and Watchdog

♦Fan Fault and Failure Indicators

♦Compatible with 2-Wire or 3-Wire Fans (Tachometer Output)

♦+3V to +5.5V Supply Range

♦Additional Shutdown Set Point (MAX6653)

♦Controlled PWM Rise/Fall Times

Applications

Personal Computers

Servers

Workstations

Telecom Equipment

Networking Equipment

Test Equipment

Industrial Controls