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A3989 Datasheet(PDF) 2 Page - Allegro MicroSystems

Part No. A3989
Description  Bipolar Stepper and High Current DC Motor Driver
Download  12 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3989 Datasheet(HTML) 2 Page - Allegro MicroSystems

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Bipolar Stepper and High Current DC Motor Driver
A3989

Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Absolute Maximum Ratings
Characteristic
Symbol
Notes
Rating
Units
Load Supply Voltage
VBB
-0.5 to 36
V
Pulsed tw < 1 µs
38
V
Logic Supply Voltage
VDD
–0.4 to 7
V
Output Current*
IOUT
Stepper motor driver, continuous
1.
A
Stepper motor driver, pulsed tw < 1µs
.8
A
Dc motor driver, continuous
.4
A
Dc motor driver, pulsed tw < 1µs
3.5
A
Logic Input Voltage Range
VIN
–0.3 to 7
V
SENSEx Pin Voltage
VSENSEx
0.5
V
Pulsed tw < 1µs
.5
V
VREFx Pin Voltage
VREFx
.5
V
Operating Temperature Range
TA
Range S
–0 to 85
ºC
Junction Temperature
TJ(max)
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)
5500
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
25
50
75
100
125
150
175
Temperature (°C)
Power Dissipation versus Ambient Temperature
(R JA = 27 ºC/W)
EV Package
4-layer PCB
Selection Guide
Part Number
Packing
A3989SEV-T
61 pieces per tube
A3989SEVTR-T
1500 pieces per reel
Characteristic
Symbol
Test Conditions
Min. Units
Package Thermal Resistance
RθJA
EV package, 4 layer PCB based on JEDEC standard
7
ºC/W


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