AMC6821 datasheet(1/56 Pages) TI

부품명	AMC6821

상세설명	Intelligent Temperature Monitor and PWM Fan Controller

PDF	56 Pages

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제조업체	TI [Texas Instruments]

홈페이지	http://www.ti.com

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AMC6821

BurrBrown Products

from Texas Instruments

1

FEATURES

DESCRIPTION

APPLICATIONS

Alarm

Detectors

AMC6821

FAN-FAULT

V

DD

THERM

OVR

IN+

IN-

Remote

Temperature

Sensing

Temperature

Data

MUX

On-Chip

TemperatureSensor

Ref

ADC

(11-Bit)

SMBus

I C

2

Interface

PWM

Driver

TACH-DATA

TACHCOUNTER

AutoFanSpeed

Controller

PWM-MODE

PWM-Out

TACH

A0

A1

SCLK

SDA

SMBALERT

GND

AMC6821

SBAS386C – MAY 2006 – REVISED JULY 2007

Intelligent Temperature Monitor and PWM Fan Controller

23456

• Remote Temperature Sensor:

The AMC6821 is an intelligent temperature monitor

±2

°C Accuracy, 0.125°C Resolution

and pulse-width modulation (PWM) fan controller. It is

designed

for

noise-sensitive

or

power-sensitive

• Local Temperature Sensor:

applications that require active system cooling. Using

±2

°C Accuracy, 0.125°C Resolution

either a low-frequency or a high-frequency PWM

• PWM Controller

signal, this device can simultaneously drive a fan,

• PWM Frequency: 10Hz to 40kHz

monitor remote sensor diode temperatures, and

Duty Cycle: 0% to 100%, 8 Bits

measure and control the fan speed so that it operates

with minimal acoustic noise at the lowest possible

• Automatic Fan Speed Control Loops

speed.

• SMBus Interface

The AMC6821 has three fan control modes: Auto

• Power: 2.7V to 5.5V

Temperature-Fan mode, Software-RPM mode, and

• Package (Green): QSOP-16 (4mm × 5mm)

Software-DCY mode. Each mode controls the fan

• RoHS Compliant

speed by changing the duty cycle of a PWM output.

Auto

Temperature-Fan

mode

is

an

intelligent,

closed-loop

control

that

optimizes

fan

speed

according to user-defined parameters. This mode

• Notebook and Desktop PCs

allows the AMC6821 to run as a stand-alone device

• Network Servers

without CPU intervention; the fan can continue to be

• Telecommunications Equipment

controlled (based on temperature measurements)

even if the CPU or system locks up. Software-RPM

• PC-Based Equipment

mode is a second closed-loop control. In this mode,

• DLP™ and LCD Projectors

the AMC6821 adjusts the PWM output to maintain a

consistent fan speed at a user-specified target value;

that is, the device functions as a fan speed regulator.

Software-RPM mode can also be used to allow the

AMC6821 to operate as a stand-alone device. The

third

mode,

Software-DCY,

is

open-loop.

In

Software-DCY mode, the PWM duty cycle is set

directly by the value written to the device.

The AMC6821 has a programmable SMBALERT

output to indicate error conditions and a dedicated

FAN-FAULT output to indicate fan failure. The

THERM pin is a fail-safe output for over-temperature

conditions that can be used to throttle a CPU clock.

Additionally,

the

OVR

indicates

the

over-temperature limit as well. All of the alarm

thresholds are set through the device registers. The

AMC6821 is available in a QSOP-16 package.

Patents 7, 083,328 and 7,098,617.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

DLP is a trademark of Texas Instruments.

3

Pentium M, Pentium-IV are trademarks of Intel.

4

JMC is a trademark of JMC Products.

5

I2C is a trademark of Philips International, Inc.

6

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

유사한 부품 번호 - AMC6821

제조업체	부품명	데이터시트	상세설명
Burr-Brown (TI)	AMC6821	712Kb / 47P	Analog Monitor and Control Circuit
Texas Instruments	AMC6821	1,023Kb / 54P	Intelligent Temperature Monitor and PWM Fan Controller
	AMC6821	1Mb / 57P	Intelligent Temperature Monitor and PWM Fan Controller REVISED JULY 2007
	AMC6821-Q1	1Mb / 54P	INTELLIGENT TEMPERATURE MONITOR AND PWM FAN CONTROLLER
	AMC6821-Q1	1Mb / 57P	Intelligent Temperature Monitor and PWM Fan Controller REVISED JULY 2007

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유사한 설명 - AMC6821

제조업체	부품명	데이터시트	상세설명
Analog Devices	ADM1029	332Kb / 48P	Dual PWM Fan Controller and Temperature Monitor for High Availability Systems REV.0
	ADM1030	278Kb / 28P	Intelligent Temperature Monitor and PWM Fan Controller REV.0
	ADM1031	289Kb / 32P	Intelligent Temperature Monitor and Dual PWM Fan Controller REV.0
	EVAL-ADM1030	534Kb / 14P	Evaluation Board for ACPI Temperature Monitor and PWM Fan Controller
Texas Instruments	AMC6821	1,023Kb / 54P	Intelligent Temperature Monitor and PWM Fan Controller
ON Semiconductor	ADM1029	1Mb / 50P	Dual PWM Fan Controller and Temperature Monitor for High Availability Systems January 2009 - Rev. 1
	ADM1030	602Kb / 29P	Intelligent Temperature Monitor and PWM Fan Controller February 2008 - Rev. 2
	ADM1031	305Kb / 30P	Intelligent Temperature Monitor and Dual PWM Fan Controller May, 2010 ??Rev. 4
Texas Instruments	AMC6821-Q1	1Mb / 54P	INTELLIGENT TEMPERATURE MONITOR AND PWM FAN CONTROLLER
Maxim Integrated Produc...	MAX6641	474Kb / 17P	SMBus-Compatible Temperature Monitor with Automatic PWM Fan-Speed Controller Rev 1; 4/06

More results

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유사한 부품 번호 - AMC6821

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