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EMC2305 Datasheet Pwm Fan Controller

Manufacturer: Microchip Technology

Overview: EMC2301/2/3/5 Single/Multiple RPM-Based PWM Fan Controller.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

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 device.

Each closed loop Fan Speed Control (FSC) algorithm has the capability to detect aging fans and alert the system.

Key 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.
  • Watchdog Timer.
  • RPM-Based Fan Control Algorithm: - 0.5% accuracy from 500 RPM to 16k RPM (external crystal oscillator) - 1% accuracy from 500 RPM to 16k RPM (internal clock).

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Similar Datasheet

Brand Logo Part Number Description Manufacturer
SMSC Logo EMC2305 Multiple RPM-Based PWM Fan Controller SMSC

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