MAX6665

PRODUCTION

Fan Controller/Driver with Factory-Programmed Temperature Thresholds

Data Sheet (Rev. 0) Product Selection Table

Part Models: 10
1ku List Price: Starting From $1.89

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Overview

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

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.

Applications

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

Part Models: 10
1ku List Price: Starting From $1.89

Documentation

Data Sheet 1

MAX6665: Fan Controller/Driver with Factory-Programmed Temperature Thresholds Data Sheet (Rev.0) 06/01/2001

Technical Articles 1

Thermal Management Handbook 05/04/2010

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX6665ASA40+	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA40+T	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA45+	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA45+T	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA55+	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA55+T	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA60+	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA60+T	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA65+	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX6665ASA65+T	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

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