INDUSTRY'S ONLY DUAL TEMPERATURE SENSOR AND FAN CONTROLLER WITH FIVE GPIOs
SUNNYVALE, CA-May 26, 2004-Maxim Integrated Products
(NASDAQ: MXIM) introduces the MAX6678, a dual temperature sensor and fan controller that offers remote temperature sensing up to 145°C and automatic adjustment of two cooling fans to minimize noise and improve efficiency. Its flexible architecture also has five GPIO (general purpose I/O) pins, which allow a user-programmable startup state without BIOS. These features make the MAX6678 the perfect choice for notebook and desktop computers where VID control, high efficiency, and low-noise operation are a priority.
The MAX6678 monitors the temperature of as many as two external diode-connected transistors up to 145°C with ±1°C accuracy. Its easy-to-use SMBus™ interface makes the data available to the system. The temperature data is also used by the internal PWM fan-speed controller to adjust the speed of two cooling fans, thus minimizing unwanted fan noise and power drain when the system is running cool, but providing maximum cooling when required. These fans can be programmed to operate with remote channel 1, remote channel 2, or both remote channels for optimized performance. Additionally,
tachometer input of each fan is monitored to ensure correct operation. In the case of failures, fan drive is automatically removed and an ALERT signal can
be generated. The GPIO pins can be used for setting POR states, controlling VID, etc. The MAX6678 is targeted at portable applications where acoustic performance, high accuracy, and efficiency are at a premium.
The MAX6678 is offered in the 20-pin QSOP package. It operates from an input voltage range of 3V to 5.5V, and only uses 500µA of supply current. Prices start at $1.75 (2500-up, FOB USA).
SMBus is a trademark of Intel Corporation.
|
