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TC650/TC651

Tiny Integrated Temperature Sensor & Brushless DC Fan

Controller with Over-Temperature Alert

Features

鈥?Integrated Temperature Sensing and Multi-speed

Fan Control

鈥?Built-in Over Temperature Alert (T

OVER

)

鈥?Temperature Proportional Fan Speed Control for

Acoustic Noise Reduction and Longer Fan Life

鈥?Pulse Width Modulation Output Drive for Cost and

Power Savings

鈥?Solid-State Temperature Sensing

鈥?鹵1擄C (Typical) Accuracy from 25擄C to +70擄C

鈥?2.8V 鈥?5.5V Operating Range

鈥?TC651 includes Auto Fan Shutdown

鈥?Low Operating Current: 50碌A(chǔ) (Typical)

Package Type

8-Pin MSOP

8-Pin SOIC

V

DD

1

NC 2

SHDN 3

GND 4

8 PWM

TC650

TC651

7 GND

6 T

OVER

5 NC

General Description

The TC650/TC651 are integrated temperature sensors

and brushless DC fan speed controllers. The TC650/

TC651 measure their junction temperature and control

the speed of the fan based on that temperature, making

them especially suited for applications in modern

electronic equipment.

Temperature data is converted from the on-chip

thermal sensing element and translated into a

fractional fan speed from 40% to 100%. A temperature

selection guide in the data sheet is used to choose the

low and high temperature limits to control the fan. The

TC650/TC651 also include a single trip point over

temperature alert (T

OVER

) that eliminates the need for

additional temperature sensors. In addition, the TC651

features an auto fan shutdown function for additional

power savings.

The TC650/TC651 are easy to use, require no software

overhead and are therefore the ideal choice for

implementing thermal management in a variety of

systems.

Applications

鈥?/div>

Thermal Protection For Personal Computers

Digital Set-Top Boxes

Notebook Computers

Data Communications

Power Supplies

Projectors

Related Literature

鈥?Application Note: AN771

Device Selection Table

Part Number

TC650XXVUA

TC651XXVUA

Package

8-Pin SOIC

8-PinMSOP

Temperature

Range

-40擄C to +125擄C

X

A

B

C

D

E

F

G

Temperature

25

30

35

40

45

50

55

The "X" denotes a suffix for temperature threshold settings.

Contact factory for other temperature ranges.

2002 Microchip Technology Inc.

DS21450B-page 1

漏

標(biāo)準(zhǔn)包裝
100
類別
集成電路 (IC)
家庭
PMIC - 熱管理
系列
-
功能
風(fēng)扇控制，溫度監(jiān)控器
傳感器類型
內(nèi)部
感應(yīng)溫度
25°C，35°C 跳閘點
精確度
±2.5°C（最小值）
拓?fù)?/label>
ADC
輸出類型
低有效
輸出警報
是
輸出風(fēng)扇
是
電源電壓
2.8 V ~ 5.5 V
工作溫度
-40°C ~ 125°C
安裝類型
表面貼裝
封裝/外殼
8-TSSOP，8-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝
8-MSOP
包裝
管件

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TC650ACVUA Datasheet

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