Microchip TC642COA
Manufacturer No:
TC642COA
Manufacturer:
Microchip
Package:
8-SOIC (0.154, 3.90mm Width)
Description:
TC642 PWM fan speed controller with temperature proportional speed control, thermistor input, fault detection, shutdown
Quantity:
In Stock :6982
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Expected Shipping：Mon, Jun 1 - Tue, Jun 2, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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TC642COA Information
Microchip TC642COA technical specifications, attributes, parameters and parts with similar specifications to Microchip TC642COA.
- Type
- Parameter
- Device Description
- Fan Manager
- Typical Accuracy (°C)
- Depends on external thermistor
- Over Temp Alert
- Yes
- SM Bus
- No
- Predictive Fan Fault
- No
- Max. Supply Current (µA)
- 1000
- Max Accuracy @ 25°C (°C)
- Depends on external thermistor
- Integrated temp Sensor
- No
- Fan Sense
- Yes
- External Temp Input
- Yes
- Type
- Parameter
- Auto Shutdown
- No
- 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 TC642COA.
Brochures:
Data Sheets:
The TC642 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation. A thermistor (or other voltage output temperature sensor) connected to the VIN input furnishes the required control voltage of 1.25Vto 2.65V (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 motor start-up at turn-on, coming out of Shutdown Mode, or following a transient fault. A logic low applied to VMIN, pin 3, causes fan shutdown. The TC642 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, indicating normal operation. A missing-pulse detector monitors this pin during normal fan operation. A stalled, open, or unconnected fan causes the TC642 to trigger its start-up timer once. If the fault persists, the FAULT output goes low, and the device is latched in its Shutdown Mode. FAULT is also asserted if the PWM reaches 100%
- Temperature Proportional
- Fan Speed for Acoustic Control and Longer Fan Life
- Efficient PWM Fan Drive
- 3.0V 5.5V Supply Range
- Supports Any Fan Voltage!
- FanSense™ Fault Detection Circuits Protect Against Fan Failure and Aid
- System Testing
- Shutdown Mode for "Green" Systems
- Supports Low Cost NTC/PTC Thermistors
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