Sunnyvale, Calif. These dual-channel temperature monitor and fan controllers from Maxim Integrated Products Inc. offer 1°C accuracy and thermistor inputs.
Each new monitor/controller (MAX6615/MAX6616) controls the speed of two cooling fans based on the temperatures either of two thermistors, or one thermistor and the
device's internal temperature. For added flexibility, the MAX6616
features six GPIOs that can be used for setting POR states and
controlling VID. The combination of high accuracy, dual thermistor
inputs, and dual PWM fan control makes the MAX6615 and MAX6616 a
practical choice for networking equipment, servers, and power supplies.
The MAX6615/MAX6616 report temperature values in digital form using a
two-wire serial interface. To adjust the speed of the cooling fans, the
temperature data controls the duty cycle of a PWM output signal. This
function minimizes noise when the system is running cool, but
provides maximum cooling when power dissipation increases. The
devices also feature an overtemperature alarm output to generate
interrupts, throttle signals, or shutdown signals.
The MAX6615 is offered in the 16-pin QSOP package, while the MAX6616
is packaged in the 24-pin QSOP. Both devices operate from a +3.0 V to
+5.5 V supply voltage range over the -40°C to +125°C temperature range, and only consume 500 μA (typical) of supply current.
Prices start at $1.75 (2500-up, FOB USA).Click here for the preliminary MAX6615/MAX6616 data sheets.
Maxim Integrated Products Inc. , 1-800-998-8800, www.Maxim-ic.com.