TC648 - Uncategorized Microchip - Free user manual and instructions
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| Product Type | PWM Fan Controller |
| Supply Voltage | 3.0V to 5.5V DC |
| Output Current | Up to 100 mA |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | SOIC-8 |
| Dimensions (approx.) | 4.9 mm x 3.9 mm x 1.5 mm |
| Weight | ~0.07 g |
| PWM Frequency Range | 30 Hz to 30 kHz |
| Fan Speed Control | Automatic or manual via PWM input |
| Features | Linear fan drive, smooth start, thermal shutdown |
| Protection | Overcurrent, overtemperature, locked rotor |
| Mounting | Surface mount |
| RoHS Compliant | Yes |
| Maintenance | None required; handle with ESD precautions |
| Safety Precautions | Do not exceed absolute maximum ratings; use proper decoupling |
| Spare Parts / Repairability | Not user-serviceable; replace entire IC if faulty |
Frequently Asked Questions - TC648 Microchip
What is the TC648?
The TC648 is a PWM fan speed controller IC from Microchip, designed for automatic or manual control of DC fans.
What is the supply voltage range?
The supply voltage range is 3.0V to 5.5V DC.
How do I connect a fan?
Connect the fan between the VOUT pin and ground. The PWM output drives a low-side N-channel MOSFET external to the IC.
Can I control the fan speed manually?
Yes, by applying a PWM signal to the VIN pin or by using a voltage divider on the VREF pin.
What is the operating temperature range?
The operating temperature range is -40°C to +85°C.
Does it have overcurrent protection?
Yes, the TC648 includes overcurrent detection and can shut down the output if a fault is detected.
What package is available?
The TC648 is available in an 8-pin SOIC package.
How does automatic fan control work?
The IC can control fan speed based on an external temperature sensor or other analog input connected to the VREF pin.
Can I use it with 12V fans?
The TC648 itself operates at 3-5.5V, but it can drive an external MOSFET to control 12V or higher fans.
Where can I find the datasheet?
The complete datasheet is available on the Microchip website or through authorized distributors.
User questions about TC648 Microchip
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Product information
Brand : Microchip
Model : TC648
Category : Uncategorized