TC642BEUA by Microchip | Motion Motor Controllers | Avnet ASIA
TOOL TIP
PRINT Bookmark Share
Send a link to this page
Please enter a valid Email id
Link
Sender
Send to
jsmith@baa.com
sjohnson@baa.com
Add another address
Add another address
Add another address
Subject
Message

TC642BEUA

Microchip

PWM Fan Motor Speed Controller 8-Pin MSOP Tube

Manufacturer Part #: TC642BEUA

Alternate Part #: TC642BEUA


RoHS Compliant

Descriptions

Documents

Subs/Alternatives/Related

Information

The TC642 is a switch mode fan speed controller for use with brushless DC fans. 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. 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 (Pin 3) causes fan shutdown. The TC642 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 TC642 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. FAULT is also asserted if the PWM reaches 100% duty cycle, indicating a possible thermal runaway situation, although the fan continues to run. The TC642 is available in the standard 8-pin plastic DIP, SOIC and MSOP packages and is available in the commercial, extended commercial and industrial temperature ranges.

Key Features

  • Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life
  • Efficient PWM Fan Drive
  • 3.0V to 5.5V Supply Range: - Fan Voltage Independent of TC642 Supply Voltage - Supports any Fan Voltage
  • FanSense™ Fault Detection Circuits Protect Against Fan Failure and Aid System Testing
  • Shutdown Mode for "Green" Systems
  • Supports Low Cost NTC/PTC Thermistors
  • Space Saving 8-Pin MSOP Package
  • Over-temperature Indication

Technical Attributes

Description
Value
Find similar Parts
Product Dimensions
3 x 3 x 0.85 mm
Supplier Package
MSOP
MSL Level
1
Maximum Operating Current
0.4 mA
Lead Finish
Matte Tin
Pin Count
8
Operating Temperature
-40 to 85 °C
Mounting
Surface Mount
Max Processing Temp
260
Type
PWM Fan Motor Speed Controller

ECCN / UNSPSC

Description
Value
ECCN:
3A991.a.1
SCHEDULE B:
8542390000
HTSN:
8542390001
UNSPSC:
32101625
UNSPSC VERSION:
V15.1101
Subs/Alternatives
Related Parts
Products
Pricing
Availability
Qty
{{#catalogEntryView}}
{{{shortDescription}}}
{{#compareCheck}} {{/compareCheck}} {{^compareCheck}} {{/compareCheck}} {{#compareCountCheck}} Added to Compare (Compare Products) {{/compareCountCheck}} {{^compareCountCheck}} Compare {{/compareCountCheck}}
{{#displayTier}}
{{#tierPrice}} {{#tierWithinRange}} {{#firstTier}}
{{tierQuantity}}+
{{{formattedItemPrice}}}
{{/firstTier}} {{^firstTier}}
{{tierQuantity}}+
{{{formattedItemPrice}}}
{{/firstTier}} {{/tierWithinRange}} {{/tierPrice}}
{{/displayTier}}
{{#displayTier}}
{{#tierPrice}} {{#showAllTier}} {{#firstTier}}
{{tierQuantity}}+
{{{formattedItemPrice}}}
{{/firstTier}} {{^firstTier}}
{{tierQuantity}}+
{{{formattedItemPrice}}}
{{/firstTier}} {{/showAllTier}} {{/tierPrice}}
{{/displayTier}}
{{#collapsedPriceTier}}
More
{{/collapsedPriceTier}} {{#quoteItem}}
{{#newProductFlagNotNPI}}

Requires Quote

REQUEST QUOTE  

{{/newProductFlagNotNPI}}
{{/quoteItem}} {{#iQuoteItem}} {{#newProductFlagNotNPI}}

Requires Quote

REQUEST QUOTE  

{{/newProductFlagNotNPI}} {{/iQuoteItem}} {{#webQuoteItem}}

Requires Quote

REQUEST QUOTE  

{{/webQuoteItem}} {{#productQuoteItem}} {{#notCpi_notNpi}} {{^hidePrice}}
{{/hidePrice}} {{#hidePrice}}
REQUEST QUOTE  

{{/hidePrice}} {{/notCpi_notNpi}} {{/productQuoteItem}}
{{#onlyShowMoreStock}}
{{/onlyShowMoreStock}} {{^onlyShowMoreStock}}
{{/onlyShowMoreStock}} {{^redTag}} {{#downloadableSoftware}}

In Stock downloadable

{{/downloadableSoftware}} {{^.downloadableSoftware}} {{#stockReady}}

In Stock: {{displayQty}}

{{/stockReady}} {{/.downloadableSoftware}} {{/redTag}} {{#factoryStockAvailable}}

Ship From MFR: {{factoryStockDisplay}}

{{/factoryStockAvailable}} {{#validLeadTime}} {{^obsolete}} {{#displayLeadTime}}

Additional Stock Lead Time: {{displayLeadTime}}

{{/displayLeadTime}} {{/obsolete}} {{/validLeadTime}} {{#canBuildInv}}

Can Build {{canBuildInv}} {{#displayCanBuildLeadTime}} in {{displayCanBuildLeadTime}} {{/displayCanBuildLeadTime}}

{{/canBuildInv}} {{#showMoreStockLink}}

Check additional stock and lead time

{{/showMoreStockLink}}
{{#isAddCartAllowed}} {{/isAddCartAllowed}}
{{^hideMinMult}} Min: {{xcatField1}} Mult: {{multQuantity}} {{/hideMinMult}}
{{/catalogEntryView}}
{{#showMore}} {{/showMore}}

Clearance Sale