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A3977KLPTR PDF预览

A3977KLPTR

更新时间: 2024-11-25 21:05:47
品牌 Logo 应用领域
急速微 - ALLEGRO 电动机控制光电二极管
页数 文件大小 规格书
17页 617K
描述
Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28

A3977KLPTR 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SSOP包装说明:HTSSOP, TSSOP28,.25
针数:28Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.35模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLER
JESD-30 代码:R-PDSO-G28JESD-609代码:e0
长度:9.7 mm功能数量:1
端子数量:28最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流:2.5 A
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装等效代码:TSSOP28,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):240
电源:3.3/5,35 V认证状态:Not Qualified
座面最大高度:1.2 mm子类别:Motion Control Electronics
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):5 V表面贴装:YES
技术:NMOS温度等级:AUTOMOTIVE
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:4.4 mm
Base Number Matches:1

A3977KLPTR 数据手册

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A3977  
Microstepping DMOS Driver with Translator  
FEATURES AND BENEFITS  
DESCRIPTION  
• ±2.5 A, 35 V output rating  
The A3977 is a complete microstepping motor driver, with  
built-in translator. It is designed to operate bipolar stepper  
motors in full-, half-, quarter-, and eighth-step modes, with  
outputdrivecapabilityof35Vand±2.5A.TheA3977includes  
afixedoff-timecurrentregulatorthathastheabilitytooperatein  
slow-,fast-,ormixed-decaymodes.Thiscurrent-decaycontrol  
scheme results in reduced audible motor noise, increased step  
accuracy, and reduced power dissipation.  
• Low RDS(on) outputs, 0.28 Ω source, 0.22 Ω sink typical  
• Automatic current decay mode detection/selection  
• 3.0 to 5.5 V logic supply voltage range  
• Mixed, fast, and slow current decay modes  
• Home output  
• Synchronous rectification for low power dissipation  
• Internal UVLO and thermal shutdown circuitry  
• Crossover-current protection  
The translator is the key to the easy implementation of the  
A3977.SimplyinputtingonepulseontheSTEPinputdrivesthe  
motor one step (two logic inputs determine if it is a full-, half-,  
quarter-, or eighth-step). There are no phase-sequence tables,  
high-frequencycontrollines,orcomplexinterfacestoprogram.  
The A3977 interface is an ideal fit for applications where a  
complex microprocessor is unavailable or over-burdened.  
Package: 28-pin TSSOP (suffix LP) with  
Exposed Thermal Pad  
Internalsynchronous-rectificationcontrolcircuitryisprovided  
to improve power dissipation during PWM operation.  
Internal circuit protection includes thermal shutdown with  
hysteresis,undervoltagelockout(UVLO)andcrossover-current  
protection. Special power-up sequencing is not required.  
The A3977 is supplied in a thin (<1.2 mm), 28-pin TSSOP  
with an exposed thermal pad (suffix LP). The A3977 is a lead  
(Pb) free, with 100% matte tin leadframe plating.  
Not to scale  
Pin-out Diagram  
A3977-DS, Rev. 12  

A3977KLPTR 替代型号

型号 品牌 替代类型 描述 数据表
A3979SLP ALLEGRO

完全替代

Microstepping DMOS Driver with Translator
A3977SLPTR-T ALLEGRO

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Microstepping DMOS Driver with Translator
A3979SLPTR-T ALLEGRO

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Microstepping DMOS Driver with Translator

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