Microchip TC646VOA713

Manufacturer No:

TC646VOA713

Manufacturer:

Microchip

Package:

8-SOIC (0.154, 3.90mm Width)

Description:

TC646 PWM fan speed controller with temperature proportional speed control, thermistor input, low voltage suspend, fault detection

Quantity:

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In Stock :Available

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TC646VOA713 information

Microchip TC646VOA713 technical specifications, attributes, parameters and parts with similar specifications to Microchip TC646VOA713.

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)
1000

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 TC646VOA713.

The TC646 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation(PWM). A thermistor (or other voltage output temperature sensor)connected to the VIN input furnishes the required control voltage of 1.25V to 2.65V(typical) for 0% to 100% PWM duty cycle. The TC646 automatically suspends fan operation when measured temperature (VIN) is below a user-programmed minimum setting (VAS). An integrated Start-Up Timer ensures reliable motor start-up at turn-on, coming out of Shutdown mode, or following a transient fault. In normal fan operation, a pulse train is present at SENSE, pin 5. The TC646 also features Microchip Technology's proprietary FanSense™ TM technology for increasing system reliability. A missing-pulse detector monitors this pin during fan operation. A stalled, open, or unconnected fan causes the TC646 to trigger its startup timer once. If the fault persists, the FAULT output goes low, and the device is latched in its Shutdown Mode. FAULT is also asserted if the PWM reaches 100% duty cycle, indicating a possible thermal runaway situation, although the fan continues to run. See the Applications section for more information and system design guidelines. The TC646 is packaged in a space-saving 8-pin plastic DIP, MSOP or SOIC package and is available in the industrial temperature range.

Temperature Proportional
Fan Speed for Acoustic Control and Longer Fan Life
Efficient PWM Fan Drive
3.0V to 5.5V Supply Range
Supports Any Fan Voltage!
FanSense™ TM Fault Detection Circuits Protect Against Fan Failure and Aid
System Testing
Automatic Shutdown Mode for "Green" Systems
Supports Low Cost NTC/PTC Thermistors

User Guide

PURCHASE

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IMPORTANT NOTICE

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SHIPPING COST

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SHIPPING METHOD

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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.