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TC650 Datasheet(PDF) 4 Page - Microchip Technology

Part # TC650
Description  Tiny Integrated Temperature Sensor & Brushless DC Fan Controller with Over-Temperature Alert
PDF  14 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC650 Datasheet(HTML) 4 Page - Microchip Technology

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TC650/TC651
DS21450B-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)
(8-Pin SOIC)
Symbol
Description
1VDD
Power Supply Input. May be independent of fan power supply.
2
NC
No Internal Connect.
3
SHDN
Fan Shutdown, Active-Low Input. During Shutdown mode the chip still monitors temper-
ature and TOVER is low if temperature rises above factory set point.
4
GND
Ground. Ground return for all TC650/TC651 functions.
5
NC
No Connect.
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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