Temperature Monitors and PWM Fan Controllers
19-2865; Rev 1; 12/03
MAX6653/MAX6663/MAX6664
Temperature Monitors and PWM Fan Controllers
General Description
The MA...
Description
19-2865; Rev 1; 12/03
MAX6653/MAX6663/MAX6664
Temperature Monitors and PWM Fan Controllers
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.
Internal watchdog set points are provided for both local and remote temperatures. There are two comparison set points for local temperatures and two for remote temperatures. When a set point is crossed, the MAX6653/MAX6663/MAX6664 assert either the INT or THERM outputs. These outputs can be used as interrupts, clock throttle signals, or overtemperature shutdown signals. Two pins on the MAX6653 control the power-up values of the co...
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