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A3977KEDTR-T PDF预览

A3977KEDTR-T

更新时间: 2024-11-25 21:05:47
品牌 Logo 应用领域
急速微 - ALLEGRO PC电动机控制
页数 文件大小 规格书
17页 617K
描述
Stepper Motor Controller, 2.5A, NMOS, PQCC44, LEAD FREE, PLASTIC, MS-018AC, LCC-44

A3977KEDTR-T 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:LPCC
包装说明:QCCJ, LDCC44,.7SQ针数:44
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.72
其他特性:ALSO REQUIRES A 8V TO 35V SUPPLY模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLER
JESD-30 代码:S-PQCC-J44JESD-609代码:e3
长度:16.59 mm湿度敏感等级:3
功能数量:1端子数量:44
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:QCCJ封装等效代码:LDCC44,.7SQ
封装形状:SQUARE封装形式:CHIP CARRIER
峰值回流温度(摄氏度):NOT SPECIFIED电源:3.3/5,35 V
认证状态:Not Qualified座面最大高度:4.57 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:Matte Tin (Sn)
端子形式:J BEND端子节距:1.27 mm
端子位置:QUAD处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:16.59 mmBase Number Matches:1

A3977KEDTR-T 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  

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