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A3987SLPTR-T PDF预览

A3987SLPTR-T

更新时间: 2024-01-27 08:23:43
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器运动控制电子器件信号电路光电二极管电动机控制
页数 文件大小 规格书
13页 450K
描述
DMOS Microstepping Driver with Translator

A3987SLPTR-T 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:HTSSOP, TSSOP24,.25针数:24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:1.66
Is Samacsys:N其他特性:ALSO REQUIRES 8V TO 50V VBB SUPPLY
模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLERJESD-30 代码:R-PDSO-G24
JESD-609代码:e3长度:7.8 mm
湿度敏感等级:2功能数量:1
端子数量:24最高工作温度:85 °C
最低工作温度:-20 °C最大输出电流:1.5 A
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装等效代码:TSSOP24,.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):260
电源:50 V认证状态:Not Qualified
座面最大高度:1.2 mm子类别:Motion Control Electronics
最大供电电流 (Isup):12 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):50 V
表面贴装:YES技术:NMOS
温度等级:OTHER端子面层:Matte Tin (Sn)
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:40
宽度:4.4 mmBase Number Matches:1

A3987SLPTR-T 数据手册

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A3987  
DMOS Microstepping Driver with Translator  
Features and Benefits  
Low RDS(on) outputs  
Short-to-ground protection  
Shorted load protection  
Description  
The A3987 is a complete microstepping motor driver with  
built-in translator for easy operation. It is designed to operate  
bipolar stepper motors in full, half, quarter, and sixteenth step  
Automatic current decay mode detection/selection  
Mixed and slow current decay modes  
Synchronous rectification for low power dissipation  
Internal UVLO and thermal shutdown circuitry  
Crossover-current protection  
modes, with output drive capability of 50 V and ±1.5 A. The  
A3987 includes a fixed off-time current regulator, which has  
the ability to operate in slow or mixed decay modes.  
The translator is the key to the easy implementation of the  
A3987. Simply inputting one pulse on the step input drives the  
motortotakeonemicrostep.Therearenophasesequencetables,  
highfrequencycontrollines,orcomplexinterfacestoprogram.  
The A3987 interface is an ideal fit for applications where a  
complex microprocessor is unavailable or over-burdened.  
TheA3987 chopping control automatically selects the current  
decay mode (slow or mixed). When a STEP signal occurs,  
the translator determines if that step results in a higher or  
lower current in each of the motor phases. If the change is to  
a higher current, then the decay mode is set to slow decay. If  
the change is to a lower current, then the decay mode is set to  
30.1% fast decay. This current decay control scheme results  
in reduced audible motor noise, increased step accuracy, and  
reduced power dissipation.  
Package: 24 pin TSSOP with exposed  
thermal pad (suffix LP)  
Approximate scale  
Continued on the next page…  
Typical Application Diagram  
0.1 μF  
X7R  
0.22 μF  
VREG  
VDD  
CP1  
CP2  
VCP  
0.1 μF  
X7R  
10 μF  
5 kΩ  
VBB1  
VBB2  
ROSC  
Microcontroller or  
Controller Logic  
A3987  
100 μF  
STEP  
DIR  
OUT1A  
OUT1B  
SLEEP/RESET  
ENABLE  
MS1  
SENSE1  
OUT2A  
MS2  
OUT2B  
REF  
SENSE2  
3987DS, Rev.1  

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