MAX6665
MAX6665
PRODUCTIONFan Controller/Driver with Factory-Programmed Temperature Thresholds
- Part Models
- 10
- 1ku List Price
- Starting From $2.39
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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
Documentation
Data Sheet 1
Technical Articles 1
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+ | SOIC_N | ||
| MAX6665ASA40+T | SOIC_N | ||
| MAX6665ASA45+ | SOIC_N | ||
| MAX6665ASA45+T | SOIC_N | ||
| MAX6665ASA55+ | SOIC_N | ||
| MAX6665ASA55+T | SOIC_N | ||
| MAX6665ASA60+ | SOIC_N | ||
| MAX6665ASA60+T | SOIC_N | ||
| MAX6665ASA65+ | SOIC_N | ||
| MAX6665ASA65+T | SOIC_N |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 20, 2026 - 2571A PIN/ERRATA |
||
| MAX6665ASA45+T | PRODUCTION | |
| MAX6665ASA60+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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