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MAX6645ABFAUB+ PDF预览

MAX6645ABFAUB+

更新时间： 2024-11-06 20:53:51
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
17页 209K
描述
Analog Circuit, 1 Func, BICMOS, PDSO10, MO-187CBA, MICRO, SOP-10

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MAX6645ABFAUB+ 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：TSSOP, TSSOP10,.19,20针数：10
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01Factory Lead Time：6 weeks
风险等级：1.23模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：S-PDSO-G10JESD-609代码：e3
长度：3 mm湿度敏感等级：1
功能数量：1端子数量：10
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：TSSOP
封装等效代码：TSSOP10,.19,20封装形状：SQUARE
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
电源：3.3/5 V认证状态：Not Qualified
座面最大高度：1.1 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：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.5 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 mmBase Number Matches：1

MAX6645ABFAUB+ 数据手册

 浏览型号MAX6645ABFAUB+的Datasheet PDF文件第2页浏览型号MAX6645ABFAUB+的Datasheet PDF文件第3页浏览型号MAX6645ABFAUB+的Datasheet PDF文件第4页浏览型号MAX6645ABFAUB+的Datasheet PDF文件第5页浏览型号MAX6645ABFAUB+的Datasheet PDF文件第6页浏览型号MAX6645ABFAUB+的Datasheet PDF文件第7页 
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  
-40°C to +125°C 16 QSOP  
-40°C to +125°C 16 QSOP  
E16-1  
E16-1  
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  
1
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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MAX6645ABFAUB+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX6644LBAAEE+T MAXIM

类似代替

 Analog Circuit, 1 Func, BICMOS, PDSO16, 0.150 INCH, 0.635 MM PITCH, MO-137AB, QSOP-16

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