L6219DSTR-T集成电路（IC）的电机驱动器控制器规格书PDF中文资料

L6219DSTR-T属于集成电路（IC）的电机驱动器控制器。由Allegro MicroSystems制造生产的L6219DSTR-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。

描述 Description

The L6219DS motor driver is designed to drive both windings of a bipolar stepper motor or bidirectionally control two DC motors. Both bridges are capable of sustaining 45 V and include internal pulse-width modulation (PWM) control of the output current to 750 mA. The outputs have been optimized for a low output saturation voltage drop (less than 1.8 V total source plus sink at 500 mA).

For PWM current control, the maximum output current is determined by user selection of a reference voltage and sensing resistor. Two logic-level inputs select output current limits of 0, 33, 67, or 100 of the maximum level. A PHASE input to each bridge determines load current direction.

The bridges include both ground clamp and flyback diodes for protection against inductive transients. Internally generated delays prevent crossover currents when switching current direction. Special power-up sequencing is not required. Thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits.

The L6219DS is supplied in a 24-pin surface-mountable SOIC, with 4 internally-fused leads for maximum package power dissipation in the smallest possible construction. It is lead (Pb) free with 100 matte tin leadframe plating.

Features and Benefits

▪ Interchangeable with SGS L6219DS

▪ 750 mA Continuous Output Current

▪ 45 V Output Sustaining Voltage

▪ Internal Clamp Diodes

▪ Internal PWM Current Control

▪ Low Output Saturation Voltage

▪ Internal Thermal Shutdown Circuitry

▪ Similar to Dual PBL3717, UC3770