MAX6664AEE+T

MAX6664AEE+T is an ACPI-compliant local and remote-junction temperature sensor and fan controller. This device measures its own die temperature, as well as the temperature of a remote-PN junction, and controls the speed of a DC cooling fan based on the measured temperature. 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 MAX6664 asserts either the active-low INT or active-low THERM outputs. These outputs can be used as interrupts, clock throttle signals, or overtemperature shutdown signals. Applications include personal computers, servers, workstations, telecom equipment, networking equipment, test equipment, industrial controls.

• 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, +3V to +5.5V supply range, controlled PWM rise/fall times
• Standby current is 10µA maximum at ( SMBDAT = SMBCLK = 1, register 00h = 00h)
• Operating current is 0.5mA typical at (SMBDAT = SMBCLK = 1)
• Internal clock frequency is 270KHz typical at (TA = +25°C)
• Operating temperature range from -40°C to +125°C, 16-lead QSOP package

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