Datasheet > TC646EOATR

TC646EOATR

更新时间： 2024-11-09 21:08:35

品牌	Logo	应用领域
美国微芯 - MICROCHIP		电动机控制
页数	文件大小	规格书
30页	368K
描述
BRUSHLESS DC MOTOR CONTROLLER

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TC646EOATR 技术参数

生命周期：	Active	包装说明：	,
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
风险等级：	5.59	模拟集成电路 - 其他类型：	BRUSHLESS DC MOTOR CONTROLLER
Base Number Matches：	1

TC646EOATR 数据手册

DTC646

PWM Fan Speed Controller with Auto-Shutdown

and FanSense^™Technology

Features

Package Types

• Temperature Proportional Fan Speed for Acoustic

Control and Longer Fan Life

SOIC/PDIP/MSOP

• Efficient PWM Fan Drive

• 3.0V to 5.5V Supply Range:

OUT

TC646

- Fan Voltage Independent of TC646

Supply Voltage

FAULT

SENSE

GND

- Supports any Fan Voltage

• FanSense™ Fault Detection Circuits Protect

Against Fan Failure and Aid System Testing

General Description

• Shutdown Mode for "Green" Systems

• Supports Low Cost NTC/PTC Thermistors

• Space Saving 8-Pin MSOP Package

• Over-temperature Indication

The TC646 is a switch mode, fan speed controller for

use with brushless DC fans. Temperature proportional

speed control is accomplished using pulse width mod-

ulation (PWM). A thermistor (or other voltage output

temperature sensor) connected to the V_INinput fur-

nishes the required control voltage of 1.25V to 2.65V

(typical) for 0% to 100% PWM duty cycle. The TC646

automatically suspends fan operation when measured

temperature (V_IN) is below a user programmed

minimum setting (V_AS). An integrated Start-up Timer

ensures reliable motor start-up at turn-on, coming out

of shutdown mode, auto-shutdown mode or following a

transient fault.

Applications

• Power Supplies

• Computers

• File Servers

• Portable Computers

• Telecom Equipment

• UPS, Power Amps

• General Purpose Fan Speed Control

The TC646 features Microchip Technology's proprie-

tary FanSense™ technology for increasing system reli-

ability. In normal fan operation, a pulse train is present

at SENSE (Pin 5). A missing-pulse detector monitors

this pin during fan operation. A stalled, open, or uncon-

nected fan causes the TC646 to trigger its Start-up

Timer once. If the fault persists, the FAULT output goes

low and the device is latched in its shutdown mode.

FAULT is also asserted if the PWM reaches 100% duty

cycle, indicating a possible thermal runaway situation,

although the fan continues to run. See Section 5.0,

“Typical Applications”, for more information and system

design guidelines.

Available Tools

• Fan Controller Demonstration Board (TC642DEMO)

• Fan Controller Evaluation Kit (TC642EV)

The TC646 is available in the 8-pin plastic DIP, SOIC

and MSOP packages and is available in the industrial

and extended commercial temperature ranges.

 2002-2012 Microchip Technology Inc.

DS21446D-page 1

12 3 4 5 6 7...30

中文翻译

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与TC646EOATR相关器件

型号	品牌	获取价格	描述	数据表
TC646EPA	MICROCHIP	获取价格	PWM Fan Speed Controller with Auto-Shutdown a
TC646EUA	MICROCHIP	获取价格	PWM Fan Speed Controller with Auto-Shutdown a
TC646EUATR	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER
TC646VOA	MICROCHIP	获取价格	PWM Fan Speed Controller with Auto-Shutdown a
TC646VOA713	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
TC646VOA713G	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
TC646VOAG	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
TC646VPA	MICROCHIP	获取价格	PWM Fan Speed Controller with Auto-Shutdown a
TC646VUA	MICROCHIP	获取价格	PWM Fan Speed Controller with Auto-Shutdown a
TC646VUA713	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER, PDSO8, PLASTIC, MSOP-8

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