AMC6821 datasheet(22/54 Pages) TI

tên linh kiện	AMC6821

Giải thích chi tiết về linh kiện	Intelligent Temperature Monitor and PWM Fan Controller

PDF	54 Pages

Scroll/Zoom	100%

nhà sản xuất	TI [Texas Instruments]

Trang chủ	http://www.ti.com

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FAN CONTROL

THERM Pin and External Hardware Control

THERM

THERM-FAN-EN

DriveFanat FullSpeed

(Drivefanatfullspeedwhen THERM-IN=1)

THERM-INbit

Output

Latch

Set

Reset

L-THERMBit

(Setto ‘1’ whenthelocaltemperatureis

greaterthantheLocal-THERM-Limit.)

R-THERMBit

(Setto ‘1’ whentheremotetemperatureis

greaterthantheRemote-THERM-Limit.)

Localtemperatureislessthan(Local-THERM-Limit

5 C)

- °

Output

Latch

Set

Reset

Remotetemp

(Remote-THERM-Limit

5 C)

eratureislessthan

- °

AMC6821

SBAS386C – MAY 2006 – REVISED JULY 2007

The THERM pin is a bi-directional I/O, as shown in Figure 22.

THERM Pin As An Output

As an open-drain output, the THERM pin is the indicator of temperature over the THERM limit. When the remote

temperature exceeds the Remote-THERM-Limit, or when the local temperature is greater than the

Local-THERM-Limit, the THERM pin goes low and remains low until the measured temperature falls 5

°C below

the exceeded THERM limit.

Figure 22. Structure of the THERM Pin

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