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MAX31785ETL Driver Integrated Circuit QFN40 New and original
Classification:
integrated circuit
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Subcategory 1
- Product Description
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- Commodity name: MAX31785ETL Driver Integrated Circuit QFN40 New and original
The MAX31785 is a closed-loop multichannel fan controller. Automatic closed-loop fan control saves system power by operating the fans at the lowest possible speeds. Added benefits of slower fan speeds include lower audible noise, longer fan life, and reduced system maintenance. Based on a user-programmable lookup table (LUT), the device automatically adjusts the speeds of the six independent fans based on one or more of the 11 available temperature sensors. Alternately, an external host can manually command the fan speeds and the device automatically adjusts the fan speeds. The device contains a fan-health-diagnostic function to help users predict impending fan failures. The device can also monitor up to six remote voltages.
S Six Independent Channels of Fan Control Supports 3-Wire and 4-Wire Fans Automatic Closed-Loop Fan Speed Control RPM- or PWM-Based Control Optional Manual Mode Control Fast and Slow PWM Frequency Options Staggered Fan Spin-Up Eases Power-Supply Stress Dual Tachometer (12-Fan Support) Fan-Fault Detection Fan-Health Status Meter Nonvolatile Fan Operating Run Time Meter S Supports Up to 11 Temperature Sensors Up to Six External Thermal Diodes with Automatic Series Resistance Cancellation One Internal Temperature Sensor Up to Four I2C Digital Temperature Sensors Fault Detection on All Temperature Sensors S Available 6-Channel ADC to Measure Remote Voltages S PMBus™-Compliant Command Interface S I2C/SMBus-Compatible Serial Bus with Bus Timeout Function S On-Board Nonvolatile Fault Logging and Default Configuration Setting S No External Clocking Required S +3.3V Supply Voltage
Six independent fan control channels, supporting three wire and four wire fans
Automatic closed-loop fan speed control
Control based on RPM or PWM
Optional manual mode control
Fast and Slow PWM Frequency Options
Interlocking fan start reduces power pressure
Dual tachometer (supporting 12 fans)
Fan fault detection
Fan health status meter
Non volatile fan running time meter
Supports up to 11 temperature sensors
Up to six external thermistor diodes with automatic series resistance elimination function
An internal temperature sensor
Up to four I2C digital temperature sensors
Fault detection of all temperature sensors
Available 6-channel ADC for measuring remote voltage
Command interface compliant with PMBus
I2C/SMBus compatible serial bus with bus timeout function
Onboard non-volatile fault records and default configuration settings
No need for an external clock
+3.3V supply voltage
Application field
Network switch/router
base station
server
Smart Grid Network System
industrial control
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