TC642BEOA - Microchip

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

TC642BEOA
Manufacturer

Microchip
ChipWorker Part#

CW11161691
Category

Motor Driver
Package

SOIC-8
Description

MICROCHIP TC642BEOA Motor Driver/Controller, PWM, 3V to 5.5V supply, 4.4V/5mA/1 Output, SOIC-8
Documentation

Datasheet

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TC642BEOA Specifications

Attribute	Attribute Value

Part Number	TC642BEOA
Manufacturer	Microchip
ChipWorker Part#	CW11161691
Category	Motor Driver
Documentation	Datasheet
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
Power Dissipation	410 mW
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	410 mW
Supply Voltage	3V ~ 5.5V
Supply Voltage (Max)	5.5 V
Supply Voltage (Min)	3 V
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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
ECCN Code	EAR99

Product Description

The TC642BEOA is a PWM Fan Speed Controllers with fan restart and FanSense™ technology for fault detection. This device is switch mode, fan speed controller that incorporates a new fan auto-restart function. Temperature-proportional speed control is accomplished using pulse width modulation. A thermistor connected to the VIN input supplies the required control voltage of 1.2 to 2.6V typical for 0 to 100% PWM duty cycle. Minimum fan speed is set by a simple resistor divider on the VMIN input. An integrated start-up timer ensures reliable motor start-up at turn-ON, coming out of shutdown mode or following a transient fault. A logic-low applied to VMIN causes fan shutdown. In normal fan operation, a pulse train is present at SENSE (pin 5). A missing-pulse detector monitors this pin during fan operation. A stalled, open or unconnected fan causes the TC642B device to turn the VOUT output on full. If the fault persists, the FAULT output goes low.
Temperature-proportional fan speed for acoustic noise reduction 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
Fan auto-restart

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