A4983SETTR-T Allegro, A4983SETTR-T Datasheet - Page 2

• Manufacturer Part Number: A4983SETTR-T
• Manufacturer: Allegro

A4983
Description (continued)
slow decay for the remainder of the off-time). This current decay
control scheme results in reduced audible motor noise, increased
step accuracy, and reduced power dissipation.
Internal synchronous rectification control circuitry is provided to
improve power dissipation during PWM operation. Internal circuit
protection includes: thermal shutdown with hysteresis, undervoltage
Absolute Maximum Ratings
Selection Guide
A4983SET-T
A4983SETTR-T
Load Supply Voltage
Output Current
Logic Input Voltage
Sense Voltage
Reference Voltage
Operating Ambient Temperature
Maximum Junction
Storage Temperature
Part Number
Characteristic
Pb-free
Yes
Yes
28-pin QFN with exposed thermal pad
28-pin QFN with exposed thermal pad
Symbol
T
V
J
V
SENSE
I
V
(max)
T
OUT
V
T
REF
BB
stg
IN
A
DMOS Microstepping Driver with Translator
Duty Cycle < 20%
Range S
Package
lockout (UVLO), and crossover-current protection. Special power-
on sequencing is not required.
The A4983 is supplied in a 5 mm × 5 mm × 0.90 nominal surface
mount QFN package with exposed thermal pad (suffix ET). The
package is lead (Pb) free (suffix –T), with 100% matte tin plated
leadframe.
Notes
73 pieces per tube
1500 pieces per 7-in. reel
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Packing
–55 to 150
–20 to 85
–0.3 to 7
Rating
±2.5
150
0.5
35
±2
4
Units
ºC
ºC
ºC
V
V
V
V
A
A
2