MAX6664AEE+

The MAX6664AEE+ from Maxim Integrated Products is a temperature monitor and PWM fan controller in 16 pin QSOP package. This is a ACPI compliant local and remote junction temperature sensor and fan controller. It 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 measured temperature. There are two comparison set points for local temperatures and two for remote temperatures. When a set point is crossed, the MAX6664 assert either the active-low INT or active-low THERM outputs. These outputs can be used as interrupts, clock throttle signals or overtemperature shutdown signals. Active-low THERM outputs for MAX6664 can also function as inputs if either is pulled low to force the fan to full speed, unless this function is masked by the user. It is used in personal computers, servers, workstations, telecom and networking equipment, test equipment and industrial controls.

• Programmable temperature offset for system calibration, 0.5mA operating current
• SMBus 2-wire serial interface with timeout, automatic or manual fan-speed control
• Remote temperature measurement accuracy is ±1°C from +60°C to +100°C
• PWM fan control output, fan speed monitoring and watchdog, 100KHz serial clock frequency
• Fan fault and failure indicators, 250ms temperature conversion time
• Compatible with 2-wire or 3-wire fans (tachometer output)
• 3V to 5.5V supply range, 25% conversion rate timing error, controlled PWM rise/fall times
• Internal watchdog set points are provided for both local and remote temperatures
• Temperature measurement resolution is 0.125°C for both local and remote temperatures
• Operating temperature range from -40°C to +125°C