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A3989_V

更新时间: 2024-02-17 13:47:52
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器
页数 文件大小 规格书
13页 382K
描述
Bipolar Stepper and High Current DC Motor Driver

A3989_V 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:QFN
包装说明:QFN-36针数:36
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:8
Is Samacsys:N其他特性:ALSO REQUIRES 8V TO 36V VBB SUPPLY
模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLERJESD-30 代码:S-XQCC-N36
JESD-609代码:e3长度:6 mm
湿度敏感等级:2功能数量:2
端子数量:36最高工作温度:85 °C
最低工作温度:-20 °C最大输出电流:3.5 A
封装主体材料:UNSPECIFIED封装代码:HVQCCN
封装等效代码:LCC36,.25SQ,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):NOT SPECIFIED
电源:3.3/5 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):10 mA最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):3 V表面贴装:YES
技术:BIPOLAR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:NOT SPECIFIED宽度:6 mm
Base Number Matches:1

A3989_V 数据手册

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A3989  
Bipolar Stepper and High Current DC Motor Driver  
Features and Benefits  
36 V output rating  
Description  
The A3989 is designed operate at voltages up to 36 V while driving  
one bipolar stepper motor, at currents up to 1.2A, and one DC motor,  
at currents up to 2.4 A. The A3989 includes a fixed off-time pulse  
width modulation (PWM) regulator for current control. The stepper  
motor driver features dual 2-bit nonlinear DACs (digital-to-analog  
converters) that enable control in full, half, and quarter steps. The  
DC motor is controlled using standard PHASE and ENABLE signals.  
Fast or slow current decay is selected via the MODE pin. The PWM  
current regulator uses the Allegropatented mixed decay mode for  
reduced audible motor noise, increased step accuracy, and reduced  
power dissipation.  
2.4 A DC motor driver  
1.2 A bipolar stepper driver  
Synchronous rectification  
Internal undervoltage lockout (UVLO)  
Thermal shutdown circuitry  
Crossover-current protection  
Very thin profile QFN package  
Internal synchronous rectification control circuitry is provided to  
improve power dissipation during PWM operation.  
Package: 36 pin QFN with exposed thermal pad  
0.90 mm nominal height (suffix EV)  
Protection features include thermal shutdown with hysteresis,  
undervoltage lockout (UVLO) and crossover current protection.  
Special power up sequencing is not required.  
The A3989 is supplied in a leadless 6 mm × 6 mm × 0.9 mm,  
36 pin QFN package with exposed power tab for enhanced thermal  
performance. The package is lead (Pb) free, with 100% matte tin  
leadframe plating.  
Approximate scale 1:1  
0.1 μF  
0.1 μF  
50 V  
50 V  
100 μF  
50 V  
0.22 μF  
50 V  
CP1 CP2 VCP VBB VBB  
VDD  
OUT1A  
OUT1B  
SENSE1  
PHASE1  
I01  
A3989  
I11  
OUT2A  
Microcontroller or  
Controller Logic  
PHASE2  
I02  
OUT2B  
SENSE2  
I12  
PHASE3  
ENABLE  
MODE  
VREF1  
VREF2  
VREF3  
OUT3A  
OUT3A  
OUT3B  
OUT3B  
SENSE3  
SENSE3  
GND GND  
Figure 1. Typical application circuit  
A3989DS, Rev. 3  

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