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Microchip Technology TC642COA Fan Controller

The TC642 is a PWM fan speed controller designed for brushless DC fans, utilizing thermal sensor inputs for precise temperature-based regulation. It features a fan fault detection system with FanSense technology to monitor fan operation and protect against failures. The device supports supply voltages from 3.0V to 5.5V, enabling compatibility with various systems and fan voltages. Offering a space-saving 8-pin MSOP package, it includes over-temperature and shutdown modes, making it ideal for power supplies, PCs, servers, telecom, UPS, and general fan control applications.

Authorized Distributors
Source:DigiKey
Part No:TC642COA
Stock:203
Inv Date:06-03-2026
Price: Unit price: $1.97
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Part No:TC642COA
Stock:121
Inv Date:06-04-2026
Price: Unit price: $1.97
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Part No:TC642COA
Stock:0
Inv Date:06-03-2026
Price: Unit price: $1.97
Buy/RFQ:
Part No:TC642COA
Stock:300
Inv Date:06-03-2026
Price: Unit price: $1.47
Buy/RFQ:
Part No:TC642COA
Stock:300
Inv Date:06-03-2026
Price: Unit price: $1.47
Buy/RFQ:
Part No:TC642COA
Stock:0
Inv Date:06-03-2026
Price: Unit price: $1.57
Buy/RFQ:

Microchip Technology TC642COA Fan Controller Specifications:

  • Supply Voltage Range: 3.0V to 5.5V
  • Package Types: MSOP, SOIC, PDIP
  • Over-temperature Indication Yes
  • FanSense Fault Detection Yes
  • Shutdown Mode Yes
  • Input Voltage for Fan Speed Control: 1.25V to 2.65V
  • Supply Current in Shutdown Mode: 25 nA typical
  • Maximum Fan Current: 250 mA
  • PWM Frequency: 30 Hz recommended (C = 1 uF)
  • Operating Temperature Range: -40°C to +125°C
  • Pin Count: 8
  • Power Dissipation: PDIP (125°C/W), SOIC (155°C/W), MSOP (200°C/W)
  • Logic Thresholds: Fan fault detection at missing pulses, fault latch-up protection
  • Drive Transistor: NPN, N-channel MOSFET options
  • Temperature Sensor Type: NTC/PTC thermistors supported
  • Footprint Compatibility: Microchip standard packages

Buy the Buy Microchip PWM Fan Speed Controller Part Number TC642COA Online

Order the Microchip TC642 fan speed controller online today. This compact, efficient device offers temperature proportional fan control, fault detection, and protection features suited for power supplies, computers, and telecom equipment. Its space-saving MSOP package and support for a wide supply voltage range ensure easy integration into your system designs. With built-in over-temperature alerts and fan fault monitoring, the TC642 ensures system reliability. Purchase now for a durable, high-performance cooling solution with easy online ordering and fast delivery.

Get Microchip TC642COA today—designed for precise temperature regulation and long-lasting fan reliability in your system.

Frequently Asked Questions

Where can I buy Microchip Technology TC642COA?

You can click on the BUY or RFQ button to purchase TC642COA from an authorized Microchip Technology distributor.

How do I troubleshoot issues or seek technical support for part TC642COA?

You can download the TC642COA datasheet or visit the Microchip Technology website for support.

Who is the manufacturer of TC642COA?

Microchip Technology

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