参数资料
型号: A3906SES-T
厂商: Allegro Microsystems Inc
文件页数: 7/10页
文件大小: 0K
描述: IC DVR DC/STEPPER MOTOR DUAL
标准包装: 92
应用: 直流电机驱动器,步进电机驱动器
输出数: 2/1
电流 - 输出: ± 1A
电源电压: 2.5 V ~ 9 V
工作温度: -20°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-WFQFN 裸露焊盘
供应商设备封装: 20-QFN 裸露焊盘(4x4)
包装: 管件
其它名称: 620-1249
A3906
Low Voltage Stepper and Single/Dual DC Motor Driver
Applications Information
External PWM If external PWM is used, the internal current
control can either be disabled by shorting the SENSEx pin to
ground, or it can be used to limit the peak current to a value under
the stall current to prevent motor heating. External PWM IN1
control is shown in the upper figure.
V IN(1)
IN1,
IN3
GND
V IN(1)
Stepper Motor Control The A3906 also can be used to control
a bipolar stepper motor. The control logic for stepper motor
control is shown in the lower figure. The driver is capable of
operating in full- and half-step modes.
PWM current control in fast and
slow decay modes
IN2,
IN4
I OUTx
GND
+I REG
0A
-I REG
Forward/
Fast Decay
Reverse/
Fast Decay
Forward/
Slow Decay
Reverse/
Slow Decay
V IN(1)
IN1
GND
V IN(1)
IN2
GND
V IN(1)
Stepper motor control in full- and
half-step modes
IN3
GND
R motor
R motor
+ V BB /
– V BB /
IN4
I OUT1 ,
I OUT2
I OUT3 ,
I OUT4
V IN(1)
GND
+ V BB /
0A
– V BB /
R motor
0A
R motor
Full Step
Sleep
Half Step
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
7
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