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A4975 PDF预览

A4975

更新时间: 2024-01-22 15:07:15
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器电机
页数 文件大小 规格书
13页 314K
描述
Full-Bridge PWM Microstepping Motor Driver

A4975 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:SOIC
包装说明:SOP, SOP16,.4针数:16
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:1.14Samacsys Confidence:4
Samacsys Status:Released2D Presentation:https://componentsearchengine.com/2D/0T/338047.1.1.png
Schematic Symbol:https://componentsearchengine.com/symbol.php?partID=338047PCB Footprint:https://componentsearchengine.com/footprint.php?partID=338047
3D View:https://componentsearchengine.com/viewer/3D.php?partID=338047Samacsys PartID:338047
Samacsys Image:https://componentsearchengine.com/Images/9/A4975SLBTR-T.jpgSamacsys Thumbnail Image:https://componentsearchengine.com/Thumbnails/1/A4975SLBTR-T.jpg
Samacsys Pin Count:16Samacsys Part Category:Integrated Circuit
Samacsys Package Category:Small Outline PackagesSamacsys Footprint Name:16 SOICW
Samacsys Released Date:2016-09-07 08:58:06Is Samacsys:N
其他特性:ALSO REQUIRE 5V TO 50V模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLER
JESD-30 代码:R-PDSO-G16JESD-609代码:e3
长度:10.3 mm湿度敏感等级:3
功能数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-20 °C
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP16,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
电源:5 V认证状态:Not Qualified
座面最大高度:2.65 mm子类别:Motion Control Electronics
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:YES
温度等级:OTHER端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:7.5 mmBase Number Matches:1

A4975 数据手册

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A4975  
Full-Bridge PWM Microstepping Motor Driver  
Features and Benefits  
Description  
±1.5 A continuous output current  
50 V output voltage rating  
The A4975 is designed to drive one winding of a bipolar  
stepper motor in a microstepping mode. The outputs are  
rated for continuous output currents to ±1.5 A and operating  
voltagesto50V.Internalpulsewidthmodulated(PWM)current  
control combined with an internal three-bit nonlinear digital-  
to-analog converter allows the motor current to be controlled  
in full-, half-, quarter-, or eighth-step (microstepping) modes.  
Nonlinear increments minimize the number of control lines  
necessaryformicrostepping.Microsteppingprovidesincreased  
step resolution, and reduces torque variations and resonance  
problems at low speed.  
Internal PWM current control  
3-bit nonlinear DAC  
Fast, mixed fast/slow, and slow current-decay modes  
Internal thermal shutdown circuitry  
Crossover-current and UVLO protection  
Packages:  
InternalcircuitrydetermineswhetherthePWMcurrent-control  
circuitry operates in a slow (recirculating) current-decay  
mode, fast (regenerative) current-decay mode, or in a mixed  
current-decay mode in which the off-time is divided into a  
period of fast current decay and with the remainder of the  
fixed off-time spent in slow current decay. The combination of  
user-selectable current-sensing resistor and reference voltage,  
digitally selected output current ratio; and slow, fast, or mixed  
current-decay modes provides users with a broad, variable  
range of motor control.  
Package B, 16-pin DIP  
with exposed tabs  
Package LB, 16-pin SOIC  
with internally fused pins  
Not to scale  
Continued on the next page…  
Functional Block Diagram  
10  
15  
6
16  
PHASE  
V
CC  
7
V
BB  
GROUND  
4
5
UVLO  
& TSD  
12  
13  
BLANKING  
GATE  
CURRENT-SENSE  
COMPARATOR  
SENSE  
MIXED-DECAY  
COMPARATOR  
PWM LATCH  
R
Q
S
11  
+
PFD  
1
+
w5  
D/A  
BLANKING  
DISABLE  
R
S
V
CC  
+ –  
RC  
3
V
TH  
2
8
9
14  
C
T
R
T
4975-DS  

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