A4989SLDTR-T Allegro Microsystems Inc, A4989SLDTR-T Datasheet - Page 6
![no-image](/images/manufacturer_photos/0/0/32/allegro_microsystems_inc_sml.jpg)
A4989SLDTR-T
Manufacturer Part Number
A4989SLDTR-T
Description
DUAL FULL BRDG MOSFET DRVR W/MICROSTEP TRANS
Manufacturer
Allegro Microsystems Inc
Datasheet
1.A4989SLDTR-T.pdf
(17 pages)
Specifications of A4989SLDTR-T
Applications
Stepper Motor Controller, 2-Phase
Number Of Outputs
1
Voltage - Load
12 V ~ 50 V
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
-20°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
38-TFSOP (0.173", 4.40mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
620-1389-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
A4989SLDTR-T
Manufacturer:
CDE
Quantity:
10 000
Part Number:
A4989SLDTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
A4989
Table 1. Microstep Resolution Truth Table
Table 2. Mixed Decay Selection Truth Table
Full Step
(MS2 = 0, MS1 = 0)
Half Step
(MS2 = 0, MS1 = 1)
1/4 Step
(MS2 = 1, MS1 = 0)
1/16 Step
(MS2 = 1, MS1 = 1)
MS2
0
0
1
1
Microstep
Setting
MS1
0
1
0
1
Microstep Resolution
Magnitude
of Current
Sixteenth Step
Falling
Falling
Falling
Falling
Rising
Rising
Rising
Rising
Quarter Step
Half Step
Full Step
MSx, DIR
Figure 1. Logic Interface Timing Diagram
RESET
STEP
PFD2 = 0, PFD1 = 0 PFD2 = 0, PFD1 = 1
t
Slow
Slow
Slow
Slow
Slow
Slow
Slow
Slow
WAKE
t
SU
t
H
Steps 1 to 5: 11%
Dual Full-Bridge MOSFET Driver
Step 1: 11%
t
STEPH
Slow
Slow
Slow
11%
11%
11%
with Microstepping Translator
PFDx State
PFD2 = 1, PFD1 = 0
Steps 1 to 5: 11%
t
Step 1: 11%
STEPL
Slow
Slow
Slow
26%
26%
26%
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
PFD2 = 1, PFD1 = 1
Steps 1 to 5: 11%
Step 1: 11%
Slow
Slow
Slow
Fast
Fast
Fast
6