Single RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown

Features

  • Programmable Fan Control circuit
    • 4-wire fan compatible
    • Both Low and High frequency PWM
  • RPM-based fan control algorithm
    • 2% accurate from 500 RPM to 16k RPM
    • Automatic Tachometer feedback
  • Temperature Look-Up Table
    • Controls fan speed or PWM drive setting
    • Eight steps that incorporate up to four temperature zones simultaneously (user selectable)
    • Supports forced DTS or standard temperature data
    • Allows external PWM input (150Hz to 40kHz)
  • Up to Three External Temperature Channels
    • Supports transistor model for 90nm - 45nm Intel CPUs
    • Resistance Error Correction and Beta Compensation
    • 1°C accurate (60°C to 125°C)
    • 0.125°C resolution
    • Programmable High and Low limits
  • Hardware Programmable Thermal Shutdown Temperature
    • Cannot be altered by software
    • 65°C to 127°C Range
    • Dedicated system shutdown interrupt pin
  • Internal Temperature Monitor
    • ±1°C accuracy
    • 0.125°C resolution
  • 3.3V Supply Voltage
  • Open drain interrupt pin
  • SMBus 2.0 Interface
    • SMBus Alert compatible
    • Selectable SMBus Address via pull-up resistor and ADDR_SEL pin
    • Block Read and Write
  • Available in 16-pin 4mm x 4mm QFN Lead-free RoHS Compliant package

 

Applications

  • Notebook Computers
  • Projectors
  • Graphics Cards
  • Industrial and Networking Equipment

Although the information in this document has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to product descriptions and specifications at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order. Products may contain design defects or errors known as anomalies which may cause a product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC's website at http://www.smsc.com. SMSC and the SMSC logo are registered trademarks of Standard Microsystems Corporation ("SMSC"). Other names mentioned may be trademarks of their respective holders. All claims made herein speak as of the date of this material. The company does not undertake to update such statements.

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Last Change: 06th of February 2013