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TC651 Datasheet(Fiches technique) 6 Page - Microchip Technology

Numéro de pièce TC651
Description  Tiny Integrated Temperature Sensor & Brushless DC Fan Controller with Overtemperature Alert
Télécharger  18 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
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 6 page
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TC650/TC651
DS21450D-page 6
 2001-2012 Microchip Technology Inc.
3.0
PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
3.1
Power Supply Input
May be independent of fan power supply.
3.2
Fan Shutdown, Active-low Input
During Shutdown mode, the chip still monitors
temperature. TOVER is low if temperature rises above
factory set point.
3.3
Ground
Ground return for all TC650/TC651 functions.
3.4
Overtemperature Alert
Active-low output.
3.5
PWM Fan Drive Output
Pulse width modulated rail-to-rail logic output. Nominal
frequency is 15 Hz.
Pin No.
Symbol
Description
1VDD
Power Supply Input
2
NC
No Internal Connect
3
SHDN
Fan Shutdown, Active-low Input
1
= Fan in normal operation
0
= Fan in shutdown
4
GND
Ground
5
NC
No Connect
6
TOVER
Overtemperature Alert, Active-low Output
1
= Overtemperature condition does not exist
0
= The device is in the overtemperature condition. The fan is driven at 100%.
Potential exists for system over-heating
7
GND
Ground
8
PWM
PWM Fan Drive Output




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