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TC642COA from MIC

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TC642COA

Manufacturer: MIC, TC, MICROCHI, TOS

PWM Fan Speed Controller with FanSense? Technology

Partnumber Manufacturer Quantity Availability
TC642COA MIC, TC, MICROCHI, TOS 1142 In Stock

Description and Introduction

PWM Fan Speed Controller with FanSense? Technology The TC642COA is a fan speed controller IC manufactured by Microchip Technology (formerly part of Toshiba). Below are the specifications, descriptions, and features based on available information:

### **Specifications:**  
- **Manufacturer:** Microchip Technology (originally Toshiba)  
- **Package:** 8-Pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage:** 4.5V to 18V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Output Drive Capability:** Up to 1A (with external MOSFET)  
- **Control Method:** PWM (Pulse Width Modulation) output for fan speed regulation  
- **Frequency Range:** Adjustable via external components  

### **Descriptions:**  
The TC642COA is a fan speed controller designed to regulate the speed of DC fans using PWM. It monitors temperature via an external thermistor and adjusts fan speed accordingly. It includes built-in hysteresis to prevent fan cycling and supports manual speed control if needed.  

### **Features:**  
- **Automatic Fan Speed Control:** Adjusts fan speed based on temperature input from a thermistor.  
- **PWM Output:** Provides a variable-duty-cycle signal for driving an external MOSFET.  
- **Hysteresis Function:** Prevents rapid fan speed fluctuations near set temperature thresholds.  
- **Manual Override:** Allows manual adjustment of fan speed via an external voltage.  
- **Wide Voltage Range:** Supports operation from 4.5V to 18V, suitable for various applications.  
- **Low Power Consumption:** Efficient design for minimal power loss.  

For detailed application circuits and further specifications, refer to the official datasheet from Microchip Technology.

Application Scenarios & Design Considerations

PWM Fan Speed Controller with FanSense? Technology

Alternative Part Number

  • MAX6650EEE+ --: Fan speed controller with PWM output and tachometer input, functionally similar to the TC642 in a comparable small package.
  • ADM1030ARQZ --: Remote diode temperature monitor with integrated fan control, offering similar closed-loop fan regulation features.
  • LM63CIMSA --: Temperature sensor with fan speed control and PWM output, suitable as a functional substitute for fan management applications.
  • MIC502BM --: Fan speed controller with similar functionality and pinout, widely available and often used as a direct substitute for the TC642.
  • ADM1021AARQZ --: Fan controller and temperature monitor IC offering comparable fan management features, suitable for similar applications.
  • EMC2301-1-ACZL-TR --: Single-channel PWM fan controller with tachometer input, same vendor family and similar control function.
  • ADM1024ARUZ --: Fan speed controller with temperature monitoring, functionally similar to the TC642 in fan management applications.
  • MAX6650EUB --: Dedicated fan-speed regulator/controller IC that can replace the TC642 in cooling control designs.

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