Microchip TC649BEUATR

Manufacturer No:

TC649BEUATR

Manufacturer:

Microchip

Package:

8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

Description:

TC649B PWM fan speed controller with temperature proportional control, thermistor input, fan sense, fault, auto shutdown

Quantity:

Delivery:

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In Stock :Available

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TC649BEUATR information

Microchip TC649BEUATR technical specifications, attributes, parameters and parts with similar specifications to Microchip TC649BEUATR.

Type
Parameter

Device Description
Fan Manager

Typical Accuracy (°C)
Depends on external thermistor

Over Temp Alert
Yes

SM Bus
No

Predictive Fan Fault
No

Max. Supply Current (µA)
400

Max Accuracy @ 25°C (°C)
Depends on external thermistor

Integrated temp Sensor
No

Fan Sense
Yes

External Temp Input
Yes

Auto Shutdown
Yes

PWMFreq
Low

FanSpeedTable
No

Temp. Range Max. (°C)
+85

Temp. Range. Min. (°C)
-40

Vcc Range Max. (V)
+5.5

Vcc Range Min. (V)
+3.0

Download datasheets and manufacturer documentation for Microchip TC649BEUATR.

The TC649B is a new version of the existing TC649 fan speed controller. This device is a switch mode fan speed controller, which incorporates a new fan auto restart function. Temperature proportional speed control is accomplished using pulse width modulation. A thermistor (or other voltage output temperature sensor) connected to the VIN input supplies the required control voltage of 1.20V to 2.60V (typical) for 0% to 100% PWM duty cycle. The auto-shutdown speed is set by a simple resistor divider on the VAS input. An integrated Start-Up Timer ensures reliable fan motor start-up at turn-on, coming out of shutdown mode, auto-shutdown mode, or following a transient fault. A logic low applied to VIN, pin 1, causes fan shutdown.

The TC649B also features Microchip Technology's proprietary FanSense™ technology for increasing system reliability. 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 TC649B device to turn the VOUT output on full (100% duty cycle). If the fan fault persists (a fan current pulse is not detected within a 32/F period), the FAULT output goes low. Even with the FAULT output low, the VOUT output is on full during the fan fault condition in order to try and restart the fan.

Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life
FanSense™ Protects Against Fan Failure
Efficient PWM Drive
Automatic Shutdown Mode for "Green" Systems
3.0V to 5.5V Supply Range
Fan Voltage Independent of Supply Voltage – Supports Any Fan Voltage
Supports Low Cost NTC/PTC Thermistors
Fan Auto-Restart

User Guide

PURCHASE

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IMPORTANT NOTICE

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Step2：Desiccant Protection

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Step6：Packaging Box

SHIPPING COST

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SHIPPING METHOD

Currently, our products are shipped through DHL, FedEx, SF, and UPS.

DELIVERY TIME

1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.