MAX6665ASA55+

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Analog Devices Inc./Maxim Integrated

FAN CONTROLLER/DRIVER WITH FACTORY-PROGRAMMED TEMPERATURE THRESHOLDS

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MAX6665ASA55+

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Analog Devices Inc./Maxim Integrated

FAN CONTROLLER/DRIVER WITH FACTORY-PROGRAMMED TEMPERATURE THRESHOLDS

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Description Specifications Series Pricing CAD Documents

Description

General part information

MAX6665 Series

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.ApplicationsCard RacksLaboratory InstrumentsNotebook and Desktop ComputersPC Power SuppliesServers

Technical Specifications

Parameters and characteristics for this part

Specification	MAX6665ASA55+

Accuracy	3 °C
Current - Output (Max)	250 mA
Current - Supply	65 µA
Mounting Type	Surface Mount
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output	Active Low, Active High
Output Function	/Warn, /FanOut, FanOn, /OverTemp
Output Type	Open Drain, Push-Pull
Package Features	Exposed Pad
Package Length	0.154 in
Package Name	8-SOIC, 8-SOIC-EP
Package Width	3.9 mm
Selectable Hysteresis	Yes
Switching Temperature	131 °F
Trip Temperature Threshold	Hot
Voltage - Supply (Maximum)	5.5 V
Voltage - Supply (Minimum)	2.7 V

MAX6665 Series

Fan Controller/Driver with Factory-Programmed Temperature Thresholds

Part	Trip Temperature Threshold	Output Type	Operating Temperature (Max)	Operating Temperature (Min)	Selectable Hysteresis	Switching Temperature	Accuracy	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Output	Current - Output (Max)	Current - Supply	Package Name	Mounting Type	Output Function	Package Length	Package Features	Package Width
Analog Devices Inc./Maxim Integrated MAX6665ASA45+	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	45 °C	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA65+T	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	149 °F	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA50+T	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	122 °F	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA70+	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	70 °C	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA45+T	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	45 °C	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA40+	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	40 °C	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA40+T	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	40 °C	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA55+	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	131 °F	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA60+T	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	60 °C	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm
Analog Devices Inc./Maxim Integrated MAX6665ASA55+T	Hot	Open Drain Push-Pull	125 °C	-40 °C	Yes	131 °F	3 °C	5.5 V	2.7 V	Active High Active Low	250 mA	65 µA	8-SOIC 8-SOIC-EP	Surface Mount	/FanOut /OverTemp /Warn FanOn	0.154 in	Exposed Pad	3.9 mm

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

MAX6665ASA55+ | Datasheet