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Maxim > Products > [Temperature Sensors] 
MAX6665
Fan Controller/Driver with Factory-Programmed Temperature Thresholds


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 136kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX6665 is a fully integrated thermal switch with an internal power transistor for driving a cooling fan rated up to 24V and 250mA. When the MAX6665's temperature rises above a factory-programmed threshold, the active-low FANOUT pin becomes active and powers the fan.

The MAX6665 is available with factory-programmed fan activation threshold temperatures from +40°C to +70°C in 5°C increments. Accuracy of the fan activation trip point is ±1°C (typ) and ±3°C (max). The trip point's hysteresis is pin selectable to 1°C, 4°C, or 8°C. Two open-drain logic outputs indicate overtemperature con- ditions: active-low WARN is activated when the temperature is 15°C above the fan activation threshold, and OT is activated when the temperature is 30°C above the threshold. These features can be used to safely power down systems that are overheated.

The MAX6665 operates from a +2.7V to +5.5V power supply, and the associated fan can be powered from 4.5V to 24V. It is available in an 8-pin SO package and operates from -40°C to +125°C.

Key Features   Applications/Uses
  • On-Chip 250mA Fan Switch
  • No External Components Required
  • Factory-Programmed Thresholds
  • Two Overtemperature Warning Signals
  • Pin-Selectable 1°C, 4°C, and 8°C Hysteresis
  • Low 65µA Supply Current

 
  		• Card Racks
  		• Laboratory Instruments
  		• Notebook and Desktop Computers
  		• PC Power Supplies
  		• Servers

    Diagram
    MAX6665: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 1126: Simple Circuit Protects Systems from Overheating - MAX6665

    Design Guides
  		• Thermal Management (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-28 of 28

    MAX6665 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6665ASA40    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E-14*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6665ASA40-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA45    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E-14*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6665ASA45-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA50    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E-14*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6665ASA50-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA55    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E-14*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6665ASA55-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA60    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E-14*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6665ASA60-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA65    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E-14*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6665ASA65-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA70    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E-14*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6665ASA70-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA55+  
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA55+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA40+  
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA40+T    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA45+  
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA45+T    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA50+  
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA50+T    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA60+  
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA60+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6665ASA65+  
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA65+T    
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA70+  
    		Active SOIC(N)-EP;8 pin;31 mm²
    Outline Drawing: 21-0111 (PDF)
    Land Pattern: 90-0151 (PDF)
    Use pkgcode/variation: S8E+14*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6665ASA70+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet

    More Information
  		• New Product Press Release 2001-10-25 
  		• Temperature Family by Product Type

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    Document Ref.: 19-2056; Rev 0; 2001-06-01
    This page last modified: 2007-06-15


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