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A4983 PDF预览

A4983

更新时间: 2024-02-08 21:48:18
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器
页数 文件大小 规格书
16页 416K
描述
DMOS Microstepping Driver with Translator

A4983 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:QFN
包装说明:HVQCCN, LCC28,.2SQ,20针数:28
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:1.14
模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLERJESD-30 代码:S-XQCC-N28
JESD-609代码:e3长度:5 mm
湿度敏感等级:2功能数量:1
端子数量:28最高工作温度:85 °C
最低工作温度:-20 °C最大输出电流:2.5 A
封装主体材料:UNSPECIFIED封装代码:HVQCCN
封装等效代码:LCC28,.2SQ,20封装形状:SQUARE
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
电源:35 V认证状态:Not Qualified
座面最大高度:1 mm子类别:Motion Control Electronics
最大供电电流 (Isup):5 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):35 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:NO LEAD端子节距:0.5 mm
端子位置:QUAD处于峰值回流温度下的最长时间:40
宽度:5 mmBase Number Matches:1

A4983 数据手册

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A4983  
DMOS Microstepping Driver with Translator  
Features and Benefits  
Low RDS(ON) outputs  
Description  
The A4983 is a complete microstepping motor driver with  
Automatic current decay mode detection/selection  
Mixed and Slow current decay modes  
Synchronous rectification for low power dissipation  
Internal UVLO  
Crossover-current protection  
3.3 and 5 V compatible logic supply  
Very thin profile QFN package  
built-in translator for easy operation. It is designed to operate  
bipolar stepper motors in full-, half-, quarter-, eighth, and  
sixteenth-step modes, with an output drive capacity of up to  
35 V and ±2 A. The A4983 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  
A4983. Simply inputting one pulse on the STEP input drives  
the motor one microstep. There are no phase sequence tables,  
highfrequencycontrollines,orcomplexinterfacestoprogram.  
The A4983 interface is an ideal fit for applications where a  
complex microprocessor is unavailable or is overburdened.  
Thermal shutdown circuitry  
The chopping control in the A4983 automatically selects the  
current decay mode (Slow or Mixed). When a signal occurs at  
the STEP input pin, the A4983 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  
current decay is set to Mixed (set initially to a fast decay for  
a period amounting to 31.25% of the fixed off-time, then to a  
Package: 28-pin QFN (suffix ET)  
Continued on the next page…  
Approximate size  
Typical Application Diagram  
VDD  
0.22 μF  
0.1 μF  
0.1 μF  
VBB  
VREG  
VDD  
VCP CP1  
CP2  
VBB  
VBB  
OUT1A  
MS1  
Microcontroller or  
Controller Logic  
OUT1B  
RS1  
MS2  
A4983  
MS3  
SLEEP  
STEP  
DIR  
OUT2A  
OUT2B  
RS2  
RESET  
ENABLE  
REF  
ROSC  
4983DS  

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