TC653 데이터 시트보기 (PDF) - Microchip Technology

부품명

상세내역

제조사

TC653

Integrated Temperature Sensor & Brushless DC Fan Controller with FanSense™ Detect & Over-Temperature

Microchip Technology 

TC652/TC653

2.0 PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1: PIN FUNCTION TABLE

Pin No.

(8-Pin MSOP)

Symbol

Description

1

VDD Power Supply Input. May be independent of fan power supply.

2

FAULT 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 pin or cycling the 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.

6

TOVER 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.

DS21453B-page 4

© 2002 Microchip Technology Inc.

Share Link: