Description

Designed for pulse width modulated (PWM) control of DC motors, the A4950 is capable of peak output currents to ±3.5 A and operating voltages to 40 V.

Input terminals are provided for use in controlling the speed and direction of a DC motor with externally applied PWM control signals. Internal synchronous rectification control circuitry is provided to lower power dissipation during PWM operation.

Internal circuit protection includes overcurrent protection, motor lead short to ground or supply, thermal shutdown with hysteresis, undervoltage monitoring of VBB, and crossover current protection.

Features and Benefits

• Low RDS(on) outputs

• Overcurrent protection (OCP)

▫ Motor short protection

▫ Motor lead short to ground protection

▫ Motor lead short to battery protection

• Low Power Standby mode

• Adjustable PWM current limit

• Synchronous rectification

• Internal undervoltage lockout (UVLO)

• Crossover-current protection

• Commercial temperature grade (A4950E: –40°C to 85°C )

• Automotive temperature grade (A4950K: –40°C to 125°C)

A4950KLJTR-T属于集成电路（IC） > 电机驱动器，控制器。Allegro MicroSystems制造生产的A4950KLJTR-T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。