A4988 Ver la hoja de datos (PDF) - Allegro MicroSystems

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A4988

DMOS Microstepping Driver with Translator and Overcurrent Protection / 28-contact QFN

Allegro MicroSystems 

A4988

DMOS Microstepping Driver with Translator

And Overcurrent Protection

Slow

Decay

Mixed

Decay

Slow Mixed

Decay Decay

Slow

Decay

Mixed

Decay

Slow Mixed

Decay Decay

Missed

Step

Voltage on ROSC terminal 2 V/div.

Step input 10 V/div.

t → , 1 s/div.

Figure 2: Missed Steps in Low-Speed Microstepping

ILOAD 500 mA/div.

Mixed Decay

No Missed

Steps

Step input 10 V/div.

t → , 1 s/div.

Figure 3: Continuous Stepping Using Automatically-Selected Mixed Stepping (ROSC pin grounded)

Allegro MicroSystems, LLC

8

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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