Microchip TC654EUN
Microchip TC654EUN

Microchip TC654EUN

Manufacturer No:

TC654EUN

Manufacturer:

Microchip

Package:

10-TFSOP, 10-MSOP (0.118, 3.00mm Width)

Description:

TC654 Dual PWM fan speed controller with thermistor input, temperature proportional speed control, SMBus speed programming

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Step1：Prepare product

Step1：Prepare product

Step2：Desiccant Protection

Step2：Desiccant Protection

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Step3：Vacuum Packaging

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Step4：Individual Package

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Step5：Anti-collision Filling

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Step6：Packaging Box

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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.

TC654EUN Information

Microchip TC654EUN technical specifications, attributes, parameters and parts with similar specifications to Microchip TC654EUN.

  • Type
  • Parameter
  • Device Description
  • Programmable Dual Fan Manager
  • Typical Accuracy (°C)
  • Depends on external thermistor
  • Over Temp Alert
  • No
  • SM Bus
  • Yes
  • Predictive Fan Fault
  • Yes
  • Max. Supply Current (µA)
  • 320
  • 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 TC654EUN.

Application Notes:

Brochures:

Data Sheets:

The TC654 is a dual PWM mode fan speed controller with FanSense™ TM technology for use with brush-less DC motors. The device allows temperature proportional speed control and therefore accomplishes lower acoustic fan noise and longer fan life. The TC654 reads the voltage provided by an external ther-mistor (or voltage output temperature sensor) and adjusts a 30% to 100% PWM duty cycle output to the fan with respect to the input temperature voltage. The PWM duty cycle can also be programmed via SMBus to allow fan speed control without the need of an external thermistor.

In normal fan operation, pulse trains are present at the SENSE pin. These pulses are used to calculate the fan RPM. The fan RPM data is used to detect a worn out, stalled, open or unconnected fan. An RPM level below the user-programmable threshold causes the TC654 to assert a logic low alert signal (FAULT). Thedefault value is 500RPM. The TC654 consumes only 0.3mA during operation and can also enter a low-power shutdown mode by setting the appropriate bit in the configuration register.

  • Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life
  • FanSense™ Protects Against Fan Failure
  • Provides RPM Data
  • 2-wire SMBus Compatible Interface
  • 3.0V to 5.5V Supply Range
  • Fan Voltage Independent of Supply Voltage – Supports Any Fan Voltage
  • Supports Low Cost NTC/PTC Thermistors

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Shipped from：HK Warehouse
Expected Shipping：Wed, Mar 25 - Thu, Mar 26, 2026
Date Code：Within 2 Years

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