19-2133; Rev 2; 11/02
Remote Temperature Switches with Integrated Fan Controller/Driver
General Description
The MAX6668/MAX6670 remote-junction thermal switches with an internal power
transistor drive a cooling fan rated for supply voltages up to +12V and 250mA.
These devices measure the temperature of an external P-N junction (typically a diode-connected
transistor) and turn on the fan power switch when the remote temperature rises above a factory-programmed threshold.
Self-contained and requiring no software development, the MAX6668/MAX6670 are simple “drop-in” fan-control solutions for a variety of systems.
The MAX6670 features an open-drain WARN output that goes active when the remote t...