A3989_V データシートの表示（PDF） - Allegro MicroSystems

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A3989_V

Bipolar Stepper and High Current DC Motor Driver

Allegro MicroSystems 

A3989

Bipolar Stepper and High Current DC Motor Driver

Selection Guide

Part Number

Packing

A3989SEV-T

61 pieces per tube

A3989SEVTR-T

1500 pieces per reel

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating Units

Load Supply Voltage

Logic Supply Voltage

VBB

Pulsed tw < 1 μs

VDD

Stepper motor driver, continuous

-0.5 to 36

V

38

V

–0.4 to 7

V

1.2

A

Output Current*

IOUT

Stepper motor driver, pulsed tw < 1 μs

Dc motor driver, continuous

2.8

A

2.4

A

Dc motor driver, pulsed tw < 1 μs

3.5

A

Logic Input Voltage Range

VIN

–0.3 to 7

V

SENSEx Pin Voltage

VREFx Pin Voltage

Operating Temperature Range

Junction Temperature

VSENSEx

VREFx

TA

TJ(max)

Pulsed tw < 1 μs

Range S

0.5

V

2.5

V

2.5

V

–20 to 85 ºC

150

ºC

Storage Temperature Range

Tstg

–55 to 150 ºC

* May be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or a

Junction Temperature of 150°C.

Thermal Characteristics (may require derating at maximum conditions)

Characteristic

Symbol

Test Conditions

Package Thermal Resistance

RθJA

EV package, 4 layer PCB based on JEDEC standard

Min. Units

27 ºC/W

Power Dissipation versus Ambient Temperature

5500

5000

4500

4000

3500

3000

2500

2000

1500

EV Package

4-layer PCB

(RQJA = 27 ºC/W)

1000

500

0

25

50

75

100

125

150

175

Temperature (°C)

Allegro MicroSystems, LLC

2

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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