Microchip TC647BEOATR
Manufacturer No:
TC647BEOATR
Manufacturer:
Microchip
Package:
8-SOIC (0.154, 3.90mm Width)
Description:
TC647B PWM fan speed controller with temperature proportional control, thermistor input, fault, fan minimum setting, auto restart
Quantity:
In Stock :9744
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Shipped from：HK Warehouse
Expected Shipping：Sat, May 30 - Sun, May 31, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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TC647BEOATR Information
Microchip TC647BEOATR technical specifications, attributes, parameters and parts with similar specifications to Microchip TC647BEOATR.
- Type
- Parameter
- Device Description
- Fan Manager
- Typical Accuracy (°C)
- Depends on external thermistor
- Over Temp Alert
- No
- SM Bus
- No
- Predictive Fan Fault
- No
- Max. Supply Current (µA)
- 400
- Max Accuracy @ 25°C (°C)
- Depends on external thermistor
- Integrated temp Sensor
- No
- Fan Sense
- Yes
- External Temp Input
- Yes
- Type
- Parameter
- Auto Shutdown
- Yes
- PWMFreq
- Low
- FanSpeedTable
- No
- Temp. Range Max. (°C)
- +85
- Temp. Range. Min. (°C)
- -40
- Vcc Range Max. (V)
- +5.5
- Vcc Range Min. (V)
- +3.0
Download datasheets and manufacturer documentation for Microchip TC647BEOATR.
Data Sheets:
Application Notes:
The TC647B is a new version of the existing TC647 fan speed controller. This device is a switch mode fan speed controller, which incorporates a new fan auto restart function. Temperature proportional speed control is accomplished using pulse width modulation. A thermistor (or other voltage output temperature sensor) connected to the VIN input supplies the required control voltage of 1.20V to 2.60V (typical)
for 0% to 100% PWM duty cycle. Minimum fan speed is set by a simple resistor divider on the VMIN input. An integrated Start-Up Timer ensures reliable fan motor start-up at turn-on, coming out of shutdown mode, or following a transient fault. A logic low applied to VIN, pin 1, causes fan shutdown.
The TC647B also features Microchip Technology's proprietary FanSense™ technology for increasing system reliability. In normal fan operation, a pulse train is present at SENSE, pin 5. A missing-pulse detector monitors this pin during fan operation. A stalled, open, or unconnected fan causes the TC647B device to turn the VOUT output on full (100% duty cycle). If the fan fault persists (a fan current pulse is not detected within a 32/F period), the FAULT output goes low. Even with the FAULT output low, the VOUT output is on full during the fan fault condition in order to try and restart the fan.
- Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life
- FanSense™ Protects Against Fan Failure
- Efficient PWM Drive
- Shutdown Mode for "Green" Systems
- 3.0V to 5.5V Supply Range
- Fan Voltage Independent of Supply Voltage – Supports Any Fan Voltage
- Supports Low Cost NTC/PTC Thermistors
- Fan Auto-Restart
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12.28 M
Listed Part Number
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