General Description

The MAX6660 is a remote temperature sensor and fan speed regulator that provides a complete fan-control

solution. The remote temperature sensor is typically a common-collector PNP, such as a substrate PNP of a

microprocessor, or a diode-connected transistor, typically a low-cost, easily mounted 2N3904 NPN type or 2N3906 PNP type.

Features

♦Integrated Thermal Sensing and Fan-Regulation Solution

♦Programmable Fan Threshold Temperature

♦Programmable Temperature Range for Full-Scale Fan Speed

♦Accurate Closed-Loop Fan-Speed Regulation

♦On-Chip Power Device Drives Fans Rated Up to 250mA

♦Programmable Under/Overtemperature Alarms

♦SMBus 2-Wire Serial Interface with Timeout (Cannot “Lock Up” the SMBus)

♦Supports SMBus Alert Response

♦ACPI Compatible, Including OVERTSystem Shutdown Function

♦±1°C (+60°C to +100°C) Thermal-Sensing Accuracy

♦MAX6660EVKIT Available

Applications

PC

Notebooks

Telecom Systems

Industrial Control Systems

Servers

Workstations