Technical Document
Specifications
Brand
MicrochipMaximum Switching Frequency
34 Hz
Maximum Source Current
5mA
Maximum Sink Current
1mA
Maximum Supply Current
1 mA
Mounting Type
Surface Mount
Package Type
SOIC
Pin Count
8
Dimensions
5 x 3.99 x 1.55mm
Length
5mm
Width
3.99mm
Height
1.55mm
Minimum Operating Temperature
-40 °C
Maximum Operating Temperature
+85 °C
Maximum Operating Supply Voltage
5.5 V
Minimum Operating Supply Voltage
3 V
Country of Origin
Thailand
Product details
TC646 Fan Controller
The Microchip TC646 is a Switch Mode Fan Speed Controller designed for use with Brushless DC Fans. From an external Thermistor (or other voltage output sensor) the TC646 provides temperature proportional fan speed control via PWM.
Featured is a user programmable minimum temperature setting. This allows the TC646 to be customised with a minimum temperature threshold, beneath which the fan will be shut-down. Integrated is a Start-Up Timer for reliable motor start-up.
The device also utilises Microchips FanSense™ technology for monitoring fan performance. If a fan reliability issue is detected the TC646 will trigger an alert via the FAULT pin.
Features
Temperature Proportional Fan Speed for Acoustic Control and Extended Fan Life
Efficient PWM Fan Drive
3.0V to 5.5V Supply Range: - Fan Voltage Independent of TC646 Supply Voltage, Supports any Fan Voltage
FanSense™ Fault Detection Circuits
Shutdown Mode
Supports NTC/PTC Thermistors
Over-Temperature Indication
Motor Controllers & Drivers, Microchip
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Technical Document
Specifications
Brand
MicrochipMaximum Switching Frequency
34 Hz
Maximum Source Current
5mA
Maximum Sink Current
1mA
Maximum Supply Current
1 mA
Mounting Type
Surface Mount
Package Type
SOIC
Pin Count
8
Dimensions
5 x 3.99 x 1.55mm
Length
5mm
Width
3.99mm
Height
1.55mm
Minimum Operating Temperature
-40 °C
Maximum Operating Temperature
+85 °C
Maximum Operating Supply Voltage
5.5 V
Minimum Operating Supply Voltage
3 V
Country of Origin
Thailand
Product details
TC646 Fan Controller
The Microchip TC646 is a Switch Mode Fan Speed Controller designed for use with Brushless DC Fans. From an external Thermistor (or other voltage output sensor) the TC646 provides temperature proportional fan speed control via PWM.
Featured is a user programmable minimum temperature setting. This allows the TC646 to be customised with a minimum temperature threshold, beneath which the fan will be shut-down. Integrated is a Start-Up Timer for reliable motor start-up.
The device also utilises Microchips FanSense™ technology for monitoring fan performance. If a fan reliability issue is detected the TC646 will trigger an alert via the FAULT pin.
Features
Temperature Proportional Fan Speed for Acoustic Control and Extended Fan Life
Efficient PWM Fan Drive
3.0V to 5.5V Supply Range: - Fan Voltage Independent of TC646 Supply Voltage, Supports any Fan Voltage
FanSense™ Fault Detection Circuits
Shutdown Mode
Supports NTC/PTC Thermistors
Over-Temperature Indication