Datasheet > MAX6670AUB040

MAX6670AUB040

更新时间： 2024-11-30 04:35:51

品牌	Logo	应用领域
美信 - MAXIM		信息通信管理光电二极管
页数	文件大小	规格书
8页	216K
描述
Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO MAX PACKAGE-10

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MAX6670AUB040 数据手册

19-2133; Rev 1; 9/02

Remote Temperature Switches with Integrated

Fan Controller/Driver

General Description

Features

The MAX6668/MAX6670 remote-junction thermal

switches with an internal power transistor drive a cool-

ing fan rated for supply voltages up to +12V and

250mA. These devices measure the temperature of an

external P-N junction (typically a diode-connected tran-

sistor) and turn on the fan power switch when the

remote temperature rises above a factory-programmed

threshold. Self-contained and requiring no software

development, the MAX6668/MAX6670 are simple

“drop-in” fan-control solutions for a variety of systems.

ꢀ +12V, 250mA Integrated Fan Driver

ꢀ No Calibration Required

ꢀ Pin-Selectable 4°C, 8°C, or 12°C Hysteresis

(MAX6670)

ꢀ Factory-Programmed Temperature Thresholds

from +40°C to +75°C

ꢀ Overtemperature Warning Signals

ꢀ 110µA (typ) Supply Current

The MAX6670 features an open-drain WARN output

that goes active when the remote temperature exceeds

the factory-programmed fan activation threshold by

+15°C. The MAX6670 features an open-drain OT output

that goes active when the remote temperature exceeds

the factory-programmed threshold by +30°C. The

MAX6668/MAX6670 provide a fan-control input,

FORCEON, that allows the fan to be driven externally,

regardless of temperature.

ꢀ Space-Saving 8-Pin and 10-Pin µMAX Packages

Ordering Information

PART*

TEMP. RANGE

-40 C to +125 C

PIN-PACKAGE

8 µMAX

MAX6668AUA_ _

MAX6670AUB_ _

10 µMAX

Available temperature thresholds range from +40°C to

+75°C in 5°C increments. Hysteresis is preset to 8°C on

the MAX6668 or pin selectable to 4°C, 8°C, or 12°C

using a three-level logic input on the MAX6670.

Temperature threshold accuracy is 1°C (typ) and

2.2°C (max) for remote-junction temperatures from

+40°C to +75°C.

*These parts are offered in eight standard temperature ver-

sions from +40°C through +75°C in 5°C increments. To com-

plete the suffix information, select an available temperature trip

point in degrees centigrade and fill in the blank. For example,

the MAX6670AUB065 describes a MAX6670 in a 10-pin µMAX

package with +65°C trip point.

The MAX6668/MAX6670 operate from a +3V to +3.6V

power supply, and are specified over the automotive

temperature range (-40°C to +125°C). The MAX6668 is

offered in an 8-pin µMAX package and the MAX6670 is

available in a space-saving 10-pin µMAX package.

Typical Applications Circuit

+12V

Applications

Notebook and Desktop Computers

250mA

+3.3V

FAN

Network Switches

DXP

DXN

FANOUT

PC Power Supplies

Laboratory Instruments

Card Racks

10k

2200pF

MAX6670

2N3904

WARN

10k

Temperature Alarms

Fan Controls

HYST

FORCEON

GND

PGND

Pin Configuration appears at end of data sheet.

Typical Operating Circuit appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7 8

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与MAX6670AUB040相关器件

型号	品牌	获取价格	描述	数据表
MAX6670AUB045	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO MAX PACKAGE-10
MAX6670AUB050	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO MAX PACKAGE-10
MAX6670AUB070	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO MAX PACKAGE-10
MAX6670AUB40	MAXIM	获取价格	Remote Temperature Switches with Integrated Fan Controller/Driver
MAX6670AUB40+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO, SOP-10
MAX6670AUB40-T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO, SOP-10
MAX6670AUB45	MAXIM	获取价格	Remote Temperature Switches with Integrated Fan Controller/Driver
MAX6670AUB45+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO, SOP-10
MAX6670AUB45+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO, SOP-10
MAX6670AUB45-T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MICRO, SOP-10

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