L6219R屬于集成電路（IC）的電機(jī)驅(qū)動器控制器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的L6219R電機(jī)驅(qū)動器，控制器產(chǎn)品屬于電機(jī)驅(qū)動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機(jī)或相關(guān)機(jī)電執(zhí)行器的電源。所實(shí)現(xiàn)的具體功能和特性集根據(jù)預(yù)期負(fù)載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機(jī)的簡單開環(huán)速度控制到基于步進(jìn)電機(jī)的高級閉環(huán)運(yùn)動控制。

描述 Description

The L6219R is a bipolar monolithic integrated circuits intended to control and drive both winding of a bipolar stepper motor or bidirectionally control two DC motors. The L6219R with a few external components form a complete control and drive circuit for LS-TTL or microprocessor controlled stepper motor system. The power stage is a dual full bridge capable of sustaining 10V and including four diodes for current recirculation.A cross conduction protection is provided to avoid simultaneous cross conduction during switching current direction.An internal pulse-width-modulation (PWM) controls the output current to 500mA with peak start-up current up to 1A.

Wide range of current control from 500mA (each bridge) is permitted by means of two logic inputs and an external voltage reference. A phase input to each bridge determines the load current direction.A ther mal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits.

特性 Features

■ ABLE TO DRIVE BOTH WINDINGS OF BIPOLAR STEPPER MOTOR

■ OUTPUT CURRENT UP TO 500mA EACH WINDING

■ WIDE VOLTAGE RANGE 4.5V TO 10V

■ HALF-STEP, FULL-STEP AND MICROSTEPPING MODE

■ BUILT-IN PROTECTION DIODES

■ INTERNAL PWM CURRENT CONTROL

■ LOW OUTPUT SATURATION VOLTAGE

■ DESIGNED FOR UNSTABILIZED MOTOR SUPPLY VOLTAGE

■ INTERNAL THERMAL SHUTDOWN