MAX6684：Fan-Failure Detector with Integrated Power Switch
The MAX6684 is an integrated fan-failure detector that detects when a fan exhibits excessive underspeed or a locked rotor. This device is especially well suited for critical systems where no fan control, or simple on/off control is desired. The MAX6684 detects fan failure by evaluating fluctuations in current at the low side of the fan; no tachometer signal is necessary. The output of the device, active-low FAIL, is an active-low, open-drain alarm. The MAX6684 can also be used to switch the fan on or off, based on the state of a logic-level input, active-low OFF. This device can be used with fans rated at up to 24V and 250mA. The MAX6684 is available in an 8-pin SO package, and is specified for operation from -40°C to +85°C.
Key Features- Dedicated Fan-Failure Detector
- Works with Ordinary 2-Wire Fans
- No Fan Tachometer Output Required
- No Software Development Required
- No Analog Circuit Design Required
- Logic-Level Fan Driver Control
- Works with Fans Rated Up to 24V/250mA
| MAX6684: Typical Operating Circuit Applications/Uses- Computers: Desktop, Workstation, Server
- Industrial
- Network Equipment
- Notebook Computers
- Telecommunications
|
DataSheet
Parametrics
| Part Number | Fan Controller Functions | Fan Cntrl. | Interface | Package/Pins | Budgetary
Price |
|---|
| See Notes |
|---|
|
|
|
|
|
| MAX6684 | Fan Failure Detector | Linear | Logic | SOIC(N)/8 | $1.23 @1k |
|
|
Quality and Environmental Data
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|
| MAX6684ESA | No Longer Available | MAX6684ESA+ | SOIC(N),;8 pin;30.9 mm² | -40°C to +85°C | No |
| MAX6684ESA+ | Active | | SOIC(N),;8 pin;30.9 mm² | -40°C to +85°C | Lead Free |
| MAX6684ESA+T | Active | | SOIC(N),;8 pin;30.9 mm² | -40°C to +85°C | Lead Free |
| MAX6684ESA-T | No Longer Available | MAX6684ESA+T | N.SO;8 pin | -40°C to +85°C | See data sheet |
