A3977SEDTR-T Allegro Microsystems Inc, A3977SEDTR-T Datasheet - Page 5
![LEAD FREE A3977SEDTR](/photos/7/44/74485/a3977sedtr-t_sml.jpg)
A3977SEDTR-T
Manufacturer Part Number
A3977SEDTR-T
Description
LEAD FREE A3977SEDTR
Manufacturer
Allegro Microsystems Inc
Datasheet
1.A3977SEDTR-T.pdf
(18 pages)
Specifications of A3977SEDTR-T
Rohs Compliant
YES
Applications
Stepper Motor Driver
Number Of Outputs
1
Current - Output
±2.5A
Voltage - Load
8 V ~ 35 V
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
-20°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
44-LCC (J-Lead)
Motor Type
Stepper
No. Of Outputs
2
Output Current
2.5A
Output Voltage
35V
Supply Voltage Range
3V To 5.5V
Driver Case Style
LCC
No. Of Pins
44
Operating Temperature Range
-20°C To +85°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
620-1146-2
A3977SEDTR-T
A3977SEDTR-T
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
A3977SEDTR-T
Manufacturer:
ALLEGRO
Quantity:
1 500
Company:
Part Number:
A3977SEDTR-T
Manufacturer:
Allegro MicroSystems, LLC
Quantity:
10 000
A3977
Continued on the next page…
ELECTRICAL CHARACTERISTICS at T
Characteristic
Output Drivers
Load Supply Voltage Range
Output Leakage Current
Output On Resistance
Body Diode Forward Voltage
Motor Supply Current
Control Logic
Logic Supply Voltage Range
Logic Input Voltage
Logic Input Current
Maximum STEP Frequency
HOME Output Voltage
Blank Time
Fixed Off Time
Mixed Decay Trip Point
Ref. Input Voltage Range
Reference Input Current
Gain (G m ) Error (note 3)
Crossover Dead Time
A
= +25°C, V
Symbol
t
PFDH
V REF
r
PFDL
V
V
f
BLANK
I REF
DS(on)
I
I
I
V
V
V
STEP
V
t DT
E G
I
IN(1)
IN(0)
DSS
V
t
IN(1)
IN(0)
BB
off
Microstepping DMOS Driver with Translator
DD
OH
BB
OL
F
BB
Operating
During sleep mode
V
V
Source driver, I
Sink driver, I
Source diode, I
Sink diode, I
f
Operating, outputs disabled
Sleep mode
Operating
V
V
I
I
R
R
Operating
V REF = 2 V, Phase Current = 38.27%
V REF = 2 V, Phase Current = 70.71%
V REF = 2 V, Phase Current = 100.00%
SR enabled
= 35 V, V
PWM
OH
OL
OUT
OUT
IN
IN
t
t
= 56 kΩ, C
= 56 kΩ, C
= 200 μA
= 0.7V
= 0.3V
= -200 μA
< 50 kHz
= V
= 0 V
BB
DD
DD
DD
OUT
F
= 3.0 V to 5.5V (unless otherwise noted)
Test Conditions
t
t
= 2.5 A
OUT
= 680 pF
= 680 pF
F
= 2.5 A
= -2.5 A
= -2.5 A
0.7V
0.7V
500*
Min.
700
100
-20
-20
8.0
3.0
30
0
–
–
–
–
–
–
–
–
–
–
–
–
–
0
–
–
–
–
DD
DD
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
0.21V DD
0.6V DD
Typ.
<1.0
<1.0
0.45
0.36
<1.0
<1.0
950
475
5.0
38
–
–
–
–
–
–
–
–
–
–
–
–
0
–
–
–
–
0.3V
0.3V
Max.
1200
V DD
0.57
0.43
±3.0
±5.0
±5.0
±10
800
-20
1.4
1.4
8.0
6.0
5.5
35
35
20
20
20
20
46
–
–
–
–
–
DD
DD
Units
kHz
mA
mA
μA
μA
μA
μA
μA
ns
μs
μA
ns
Ω
Ω
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V
5