Datasheet > A6219DS

A6219DS

更新时间： 2024-11-05 03:16:55

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
8页	312K
描述
Dual Full-Bridge PWM Motor Driver

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A6219DS 数据手册

A6219DS

Dual Full-Bridge PWM Motor Driver

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

Description

The L6219DS motor driver is designed to drive both windings

of a bipolar stepper motor or bidirectionally control two DC

motors.Bothbridgesarecapableofsustaining45Vandinclude

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

determinedbyuserselectionofareferencevoltageandsensing

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.

Package: 24 pin SOICW (suffix LB)

The bridges include both ground clamp and flyback diodes for

protection against inductive transients. Internally generated

delays prevent crossover currents when switching current

direction.Specialpower-upsequencingisnotrequired.Thermal

protectioncircuitrydisablestheoutputsifthechiptemperature

exceeds safe operating limits.

TheL6219DSissuppliedina24-pinsurface-mountableSOIC,

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.

Not to scale

Typical Application

STEPPER

MOTOR

FROM

μP

FROM

μP

REF

820 pF 56 k7

+5 V

820 pF

56 k7

Dwg. EP-008B1

29319.43H

12 3 4 5 6 7 8

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