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MAX6644LBAAEE

更新时间： 2024-09-16 11:15:19

品牌	Logo	应用领域
美信 - MAXIM		模拟IC 风扇信号电路光电二极管信息通信管理控制器
页数	文件大小	规格书
17页	209K
描述
Automatic PWM Fan-Speed Controllers with Overtemperature Output

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MAX6644LBAAEE 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	SSOP
包装说明：	0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16	针数：	16
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.31.00.01	风险等级：	5.06
Is Samacsys：	N	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e0
长度：	4.89 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	16
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装等效代码：	SSOP16,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	峰值回流温度（摄氏度）：	245
电源：	3.3/5 V	认证状态：	Not Qualified
座面最大高度：	1.75 mm	子类别：	Motion Control Electronics
最大供电电流 (Isup)：	1 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	3 V	标称供电电压 (Vsup)：	3.3 V
表面贴装：	YES	技术：	BICMOS
温度等级：	AUTOMOTIVE	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.9 mm	Base Number Matches：	1

MAX6644LBAAEE 数据手册

19-3305; Rev 2; 3/07

Automatic PWM Fan-Speed Controllers with

Overtemperature Output

General Description

Features

♦ Simple, Automatic Fan-Speed Control

The MAX6643/MAX6644/MAX6645 monitor temperature

and automatically adjust fan speed to ensure optimum

cooling while minimizing acoustic noise from the fan.

Each device measures two temperature locations.

♦ Internal and External Temperature Sensing

♦ Detect Fan Failure Through Locked-Rotor Output,

Tachometer Output, or Fan-Supply Current

Sensing

The MAX6643/MAX6644/MAX6645 generate a PWM

waveform that drives an external power transistor, which

in turn modulates the fan’s power supply. The

MAX6643/MAX6644/MAX6645 monitor temperature and

adjust the duty cycle of the PWM output waveform to con-

trol the fan’s speed according to the cooling needs of the

system. The MAX6643 monitors its own die temperature

and an optional external transistor’s temperature, while the

MAX6644 and MAX6645 each monitor the temperatures

of one or two external diode-connected transistors.

♦ Multiple, 1.6% Output Duty-Cycle Steps for Low

Audibility of Fan-Speed Changes

♦ Pin-Selectable or Factory-Selectable Low-

Temperature Fan Threshold

♦ Pin-Selectable or Factory-Selectable High-

Temperature Fan Threshold

The MAX6643 and MAX6644 have nine selectable trip

temperatures (in 5°C increments). The MAX6645 is fac-

tory programmed and is not pin selectable.

♦ Spin-Up Time Ensures Fan Start

♦ Fan-Start Delay Minimizes Power-Supply Load at

Power-Up

All versions include an overtemperature output (OT).

OT can be used for warning or system shutdown. The

MAX6643 also features a FULLSPD input that forces the

PWM duty cycle to 100%. The MAX6643/MAX6644/

MAX6645 also feature a FANFAIL output that indicates

a failed fan. See the Selector Guide for a complete list

of each device’s functions.

♦ 32Hz PWM Output

♦ Controlled Duty-Cycle Rate-of-Change Ensures

Good Acoustic Performance

♦ 2°C Temperature-Measurement Accuracy

♦ FULLSPD/FULLSPD Input Sets PWM to 100%

♦ Pin-Selectable OT Output Threshold

The MAX6643 and MAX6644 are available in a small

16-pin QSOP package and the MAX6645 is available in

a 10-pin µMAX^®package. All versions operate from

3.0V to 5.5V supply voltages and consume 500µA (typ)

supply current.

♦ 16-Pin QSOP and 10-Pin µMAX Packages

Ordering Information

Applications

Networking Equipment

Storage Equipment

Servers

PIN-

PKG

PART

TEMP RANGE

PACKAGE CODE

MAX6643LBFAEE

MAX6643LBBAEE

MAX6644LBAAEE

-40°C to +125°C 16 QSOP

E16-1

U10-2

Desktop Computers

Workstations

MAX6645ABFAUB -40°C to +125°C 10 µMAX

Pin Configurations, Typical Operating Circuit, and Selector

Guide appear at end of data sheet.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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MAX6644LBAAEE 替代型号

型号	品牌	替代类型	描述	数据表
MAX6644LBAAEE+	MAXIM	完全替代	Analog Circuit, 1 Func, BICMOS, PDSO16, 0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16
MAX6645ABFAUB+	MAXIM	类似代替	Analog Circuit, 1 Func, BICMOS, PDSO10, MO-187CBA, MICRO, SOP-10
MAX6644LBAAEE+T	MAXIM	类似代替	Analog Circuit, 1 Func, BICMOS, PDSO16, 0.150 INCH, 0.635 MM PITCH, MO-137AB, QSOP-16

与MAX6644LBAAEE相关器件

型号	品牌	获取价格	描述	数据表
MAX6644LBAAEE+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO16, 0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16
MAX6644LBAAEE+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO16, 0.150 INCH, 0.635 MM PITCH, MO-137AB, QSOP-16
MAX6644LBAAEE-T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO16, 0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16
MAX6645	ADI	获取价格	自动PWM风扇速度控制器，带有过温报警输出
MAX6645ABFAUB	MAXIM	获取价格	Automatic PWM Fan-Speed Controllers with Overtemperature Output
MAX6645ABFAUB+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, MO-187CBA, MICRO, SOP-10
MAX6646	MAXIM	获取价格	+145∑C Precision SMBus-Compatible Remote/ Loc
MAX6646	ADI	获取价格	+145°C、高精度、SMBus兼容、远端/本地传感器，带有过温报警
MAX6646_07	MAXIM	获取价格	145°C Precision SMBus-Compatible Remote/ Loca
MAX6646_1207	MAXIM	获取价格	145Â°C Precision SMBus-Compatible Remote/ Loc

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