a4982 Allegro MicroSystems, Inc., a4982 Datasheet - Page 4

• Manufacturer Part Number: a4982
• Description: Dmos Microstepping Driver With Translator And Overcurrent Protection
• Manufacturer: Allegro MicroSystems, Inc.

A4982
ELECTRICAL CHARACTERISTICS
1
2
units, within the specified maximum and minimum limits.
3
Output Drivers
Load Supply Voltage Range
Logic Supply Voltage Range
Output On Resistance
Body Diode Forward Voltage
Motor Supply Current
Logic Supply Current
Control Logic
Logic Input Voltage
Logic Input Current
Microstep Select
Logic Input Hysteresis
Blank Time
Fixed Off-Time
Reference Input Voltage Range
Reference Input Current
Current Trip-Level Error
Crossover Dead Time
Protection
Overcurrent Protection Threshold
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
VDD Undervoltage Lockout
VDD Undervoltage Hysteresis
For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.
Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual
V
ERR
= [(V
Characteristics
REF
/8) – V
SENSE
] / (V
3
REF
/8).
4
V
DDUVLOHYS
V
Symbol
T
V
R
I
t
1
TSDHYS
DDUVLO
V
V
R
R
OCPST
HYS(IN)
BLANK
V
T
I
I
V
t
I
V
DSON
I
IN(1)
IN(0)
I
OFF
REF
err
t
at T
V
IN(1)
IN(0)
TSD
DD
MS1
MS2
REF
BB
DT
DD
BB
F
DMOS Microstepping Driver with Translator
I
A
= 25°C, V
Operating
During Sleep Mode
Operating
Source Driver, I
Sink Driver, I
Source Diode, I
Sink Diode, I
f
Operating, outputs disabled
Sleep Mode
f
Outputs off
Sleep Mode
V
V
MS1 pin
MS2 pin
As a % of V
OSC = VDD or GND
R
V
V
V
V
PWM
PWM
IN
IN
REF
REF
REF
DD
OSC
= V
= V
rising
< 50 kHz
< 50 kHz
= 2 V,
= 2 V,
= 2 V,
BB
= 25 kΩ
DD
DD
= 35 V (unless otherwise noted)


DD
%I
%I
%I
Test Conditions
0.7
0.3
OUT
F
TripMAX
TripMAX
TripMAX
= 1.5 A
OUT
F
= 1.5 A
= –1.5 A
= –1.5 A
=
= 70.71%
= 100.00%
38.27%
and Overcurrent Protection
V
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
DD
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Min.
–20
–20
100
3.0
0.7
2.1
2.7
20
23
–3
8
0
–
–
–
–
–
–
–
–
–
–
–
–
–
5
0
–
–
–
–
–
–

0.7
Typ.
<1.0
<1.0
33.3
320
320
100
475
165
2.8
30
30
15
90
11
–
–
–
–
–
–
–
–
–
–
–
–
–
1
–
0
–
–
–
–
2
V
DD
Max.
430
430
±15
800
5.5
1.3
1.3
1.3
2.9
35
35
10
10
20
20
19
40
37
±5
±5
2
–
–
–
4
8
5
–

4
3
–
–
–
0.3
Units
mΩ
mΩ
mA
mA
mA
mA
mV
kΩ
kΩ
μA
μA
μA
μA
μA
°C
°C
μs
μs
μs
ns
%
%
%
%
V
V
V
V
V
V
V
V
A
V
4