DMOS Microstepping Driver with Translator

A3987

5

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

Figure 1. Logic Interface Timing Diagram

STEP

MS1, MS2,

RESET/SLEEP,

or DIR

Time Duration

Symbol

Typ.

Unit

STEP minimum, HIGH pulse width

1

μs

STEP minimum, LOW pulse width

1

μs

Setup time, input change to STEP

200

ns

Hold time, input change to STEP

200

ns

Characteristics

Symbol Test Conditions

Min.

Max.

Units

Protection Circuitry

2–

–

A

Overcurrent Blanking

13

μs

Thermal Shutdown Temperature

–

165

–

°C

Thermal Shutdown Hysteresis

–15

–

°C

vidual units, within the specified maximum and minimum limits.