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EMC2303 - PWM Fan Controller

Download the EMC2303 datasheet PDF. This datasheet also covers the EMC2301 variant, as both devices belong to the same pwm fan controller family and are provided as variant models within a single manufacturer datasheet.

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).

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (EMC2301-Microchip.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
EMC2303 Multiple RPM-Based PWM Fan Controller SMSC
EMC2300 Fan Control Device SMSC Corporation
EMC2301 RPM-Based PWM Fan Controller SMSC
EMC2302 Dual RPM-Based PWM Fan Controller SMSC
EMC2305 Multiple RPM-Based PWM Fan Controller SMSC

Other Datasheets by Microchip Technology

Part Number Description
EMC2301 PWM Fan Controller
EMC2302 PWM Fan Controller
EMC2305 PWM Fan Controller
EMC2103 RPM-Based Fan Controller
EMC2113 RPM-Based Fan Controller

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.

View original datasheet text
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.