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EMC2301 - PWM Fan Controller

General Description

The EMC2301/2/3/5 family is an SMBus compliant fan controller with up to five independently controlled PWM fan drivers.

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

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EMC2301 RPM-Based PWM Fan Controller SMSC
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Other Datasheets by Microchip Technology

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EMC2302 PWM Fan Controller
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EMC2305 PWM Fan Controller
EMC2103 RPM-Based Fan Controller
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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EMC2301/2/3/5 Single/Multiple RPM-Based PWM Fan Controller 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) • SMBus 2.