A3977SEDTR-T Allegro Microsystems Inc, A3977SEDTR-T Datasheet - Page 5

• Manufacturer Part Number: A3977SEDTR-T
• Description: LEAD FREE A3977SEDTR
• Manufacturer: Allegro Microsystems Inc

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

A3977
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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