EMC2301 Datasheet - Microchip

EMC2301 PWM Fan Controller

The EMC2301/2/3/5 family is an SMBus compliant fan controller with up to five independently controlled PWM fan drivers. Each fan driver is controlled by a programmable frequency PWM driver and Fan Speed Control algorithm that operates in either a closed loop fashion or as a directly PWM-controlled d.

EMC2301 Features

* Up To Five Programmable Fan Control Circuits: - 4-wire fan compatible - High-speed PWM (26 kHz) - Low-speed PWM (9.5 Hz-2240 Hz) - Optional detection of aging fans - Fan Spin Up Control and Ramp Rate Control - Alert on Fan Stall - Up to three selectable default fan speeds for the EMC2303/5

EMC2301-Microchip.pdf