Microchip TC649VOATR
Manufacturer No:
TC649VOATR
Manufacturer:
Microchip
Package:
8-SOIC (0.154, 3.90mm Width)
Description:
TC649 PWM fan speed controller with temperature proportional control, thermistor input, fan sense, fault, auto shutdown
Quantity:
In Stock :4259
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Shipped from：HK Warehouse
Expected Shipping：Sun, May 31 - Mon, Jun 1, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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TC649VOATR Information
Microchip TC649VOATR technical specifications, attributes, parameters and parts with similar specifications to Microchip TC649VOATR.
- 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)
- 1000
- Max Accuracy @ 25°C (°C)
- Depends on external thermistor
- Integrated temp Sensor
- Yes
- Fan Sense
- Yes
- External Temp Input
- No
- 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 TC649VOATR.
Data Sheets:
Application Notes:
The TC649 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation(PWM). A thermistor (or other voltage output temperature sensor) connected to VIN furnishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle. The TC649 automatically suspends fan operation when measured temperature (VIN) is below a user-programmed minimum setting (VAS). An integrated Start-Up Timer ensures reliable motor start-up at turn-on, coming out of Shutdown Mode, or following a transient fault. 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 TC649 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. See the Applications section for more information and system design guidelines. The TC649 is packaged in a space-saving 8-Pin PDIP, MSOP or a SOIC package and is available in the industrial temperature range.
- Temperature Proportional
- Fan Speed for Acoustic Control and Longer Fan Life
- Efficient PWM Fan Drive
- 3.0V to 5.5V Supply Range
- Supports Any Fan Voltage!
- Fault Detection Circuits Protect Against Fan Failure and Aid System Testing
- Automatic Shutdown Mode for "Green" Systems
- Supports Low Cost NTC/PTC Thermistors
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