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TC652AEVUATR Fiches technique(PDF) 4 Page - Microchip Technology

No de pièce TC652AEVUATR
Description  Integrated Temperature Sensor & Brushless DC Fan
Download  14 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC652AEVUATR Fiches technique(HTML) 4 Page - Microchip Technology

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TC652/TC653
DS21453B-page 4
© 2002 Microchip Technology Inc.
2.0
PIN DESCRIPTIONS
Thedescriptionsof the pins arelistedinTable2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(8-Pin MSOP)
Symbol
Description
1VDD
Power Supply Input. May be independent of fan power supply.
2FAULT
Fan Fault Alert, Active-Low Output. FAULT goes low to indicate a fan FAULT condition.
When FAULT occurs, the device is latched in Shutdown mode with PWM low. Toggling
the SHDN pinor cyclingthe VDD will release the part and fan from shutdown. FAULT will
unconditionally remain high during shutdown.
3
SHDN
Fan Shutdown, Active-Low Input. During Shutdown mode the chip still monitors
temperature and TOVER is low if temperature rises above factory set point.
4
GND
Ground return for all TC652/TC653 functions.
5
SENSE
Detect Fan Pulses Input. Pulses are detected at this pin as fan rotation chops the current
through the sense resistor, RSENSE. The absence of pulses indicates a Fan Fault.
6TOVER
Over-Temperature Alert, Active-Low Output.
7
GND
Ground.
8
PWM
PWM Fan Drive Output. Pulse width modulated rail-to-rail logic output. Nominal
Frequency is 15Hz.


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