Microchip TC649BEOATR
Microchip TC649BEOATRMicrochip TC649BEOATRMicrochip TC649BEOATR

Microchip TC649BEOATR

Manufacturer No:

TC649BEOATR

Manufacturer:

Microchip

Package:

8-SOIC (0.154, 3.90mm Width)

Description:

TC649B PWM fan speed controller with temperature proportional control, thermistor input, fan sense, fault, auto shutdown

Delivery:

DHL
DHL
DHL
DHL

Payment:

DHL
DHL
DHL
DHL
DHL
DHL
DHL

In Stock :Available

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TC649BEOATR information

Microchip TC649BEOATR technical specifications, attributes, parameters and parts with similar specifications to Microchip TC649BEOATR.

  • 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)
  • 400
  • Max Accuracy @ 25°C (°C)
  • Depends on external thermistor
  • Integrated temp Sensor
  • No
  • Fan Sense
  • Yes
  • External Temp Input
  • Yes
  • 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 TC649BEOATR.

Data Sheets:

Application Notes:

User Guide:

Brochures:

The TC649B is a new version of the existing TC649 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. The auto-shutdown speed is set by a simple resistor divider on the VAS input. An integrated Start-Up Timer ensures reliable fan motor start-up at turn-on, coming out of shutdown mode, auto-shutdown mode, or following a transient fault. A logic low applied to VIN, pin 1, causes fan shutdown.

The TC649B 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 TC649B 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
  • Automatic 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

User Guide

PURCHASE

Please verify all part numbers, quantities, and packaging preferences before placing your order. If substitutions are acceptable, please indicate this clearly. For time-sensitive projects, confirm estimated delivery dates and stock availability in advance. Once submitted, changes or cancellations may not be possible, especially for items marked as non-cancellable/non-returnable (NCNR). For international shipments, please ensure all import documentation is complete and accurate to avoid delays.

MEANS OF PAYMENT

For your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and Wire Transfer. Net terms may be available for qualified customers upon approval.

RFQ (REQUEST FOR QUOTATIONS)

Please ensure the part numbers and quantities are accurate and complete when submitting your RFQ.
Provide target prices and acceptable alternatives, if any, to speed up the quotation process.

IMPORTANT NOTICE

Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

Step1：Prepare product

Step1：Prepare product

Step2：Desiccant Protection

Step2：Desiccant Protection

Step3：Vacuum Packaging

Step3：Vacuum Packaging

Step4：Individual Package

Step4：Individual Package

Step5：Anti-collision Filling

Step5：Anti-collision Filling

Step6：Packaging Box

Step6：Packaging Box

SHIPPING COST

1. Shipping starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).
2. Some specific products need to reach the minimum order quantity.
3. It may cost additional remote fees for delivery if you are in a remote area.

SHIPPING METHOD

Currently, our products are shipped through DHL, FedEx, SF, and UPS.

DELIVERY TIME

1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.

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