Image is for your reference only,please check specifications for details

TC646BEOA - Microchip
Manufacturer:
Microchip
ManyChip's Part#:
MC12688333
Category:
Motor Driver
Package:
SOIC-8
Datasheet:
Datasheet 3D Model
Description:
MICROCHIP TC646BEOA Motor Driver/Controller, PWM, 3V to 5.5V supply, 4.4V/5mA/1 Output, SOIC-8
Stock Locations:
Availability:
224 pcs In Stock
MOQ:
1 pcs
Unit Price:
$ 2.36

Updated at 17/06/2025 10:30:15(UTC+8)

Certifications

ManyChip is committed to product quality and safety with ISO 9001, ISO 13485, ISO 45001, UL, RoHS, CQC and REACH certifications.

Description

The TC646BEOA is a switch-mode PWM Fan Speed Controller with an auto-shutdown for use with brushless DC fans. Temperature proportional speed control is accomplished using pulse width modulation. A thermistor connected to the VIN input furnishes the required control voltage of 1.25 to 2.65V for 0 to 100% PWM duty cycle. It automatically suspends fan operation when measured temperature is below user programmed minimum setting. An integrated start-up timer ensures reliable motor start-up at turn-ON, coming out of shutdown mode, auto-shutdown mode or following a transient fault. It features Microchip Technology"s proprietary FanSense™ technology for increasing system reliability. In normal fan operation, a pulse train is present at SENSE. A missing-pulse detector monitors this pin during fan operation. A stalled, open or unconnected fan causes the TC646 to trigger its start-up timer once. If the fault persists, the FAULT output goes low and the device is latched in its shutdown mode.
Temperature proportional fan speed for acoustic control and longer fan life
Efficient PWM fan drive
FanSense™ Fault detection circuit protects against fan failure and aids system testing
Shutdown mode for green systems
Supports NTC/PTC thermistors
Over-temperature indication

Show

TC646BEOA Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	SOIC-8
Frequency	30.0 Hz
Supply Voltage (DC)	3.00V (min)
Number of Outputs	1 Output
Input Voltage (DC)	5.50 V
Output Voltage	4.4 V
Output Current	5 mA
Supply Current	400 µA
Number of Channels	1 Channel
Number of Positions	8 Position
Thermal Resistance	200 ℃/W
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	3V ~ 5.5V
Supply Voltage (Max)	5.5 V
Supply Voltage (Min)	3 V
Input Voltage	5.8 V
	Show
Size-Length	5 mm
Size-Width	3.99 mm
Size-Height	1.55 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17
HTS Code	8542390001
ECCN Code	EAR99

TT in advance (bank transfer), Western Union, Credit card,
PayPal. Customer is responsible for shipping fee, bank
charges, duties and taxes.
- You can choose whether shipping charges will be charged through your shipping account or by us.
- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- Carefully inspected and packed by ManyChip warehouse
- Vacuum packaging
- Anti-static packaging
- Shockproof foam
The terms here are for reference only, the actual terms are subject to the sales quotation.
- Please confirm product specifications when ordering.
- MOQ refers to the minimum order quantity required to purchase each part.
- If you have special ordering instructions, please indicate them on the ordering page.
- Inspection (PSI) will be performed prior to shipment.
- Income Quality Control (IQC), 1000+ qualified dealers.
- Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray control
- XRF inspection
- Electrical testing
- Surface testing
-Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity

If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.

SN:H3.19878LO45080V37Q0QC0S0

Please fill the information below to send RFQ quickly,and we will respond immediately.