A3906集成电路（IC）的电机驱动器控制器规格书PDF中文资料

A3906属于集成电路（IC）的电机驱动器控制器。由Allegro MicroSystems制造生产的A3906电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。

Description

Designed for pulse width modulated (PWM) control of low voltage stepper motors, and single and dual DC motors, the A3906 is capable of output currents up to 1 A per channel and operating voltages from 2.5 to 9 V.

The A3906 has an internal fixed off-time PWM timer that sets a peak current based on the selection of a current sense resistor. An overcurrent output flag is provided that notifies the user when the current in the motor winding reaches the peak current determined by the sense resistor. The fault output does not affect driver operation.

Features and Benefits

▪ 2.5 to 9 V operation

▪ Internal PWM current limit control

▪ Synchronous rectification for reduced power dissipation

▪ Peak current output flag

▪ Undervoltage lockout

▪ Low RDS(on) outputs

▪ Small package

▪ Brake mode for DC motors

▪ Sleep function

▪ Crossover-current protection

▪ Thermal shutdown