A4985SETTR-T Allegro Microsystems Inc, A4985SETTR-T Datasheet - Page 4

IC STEPPER MOTOR DRIVER 32QFN

A4985SETTR-T

Manufacturer Part Number
A4985SETTR-T
Description
IC STEPPER MOTOR DRIVER 32QFN
Manufacturer
Allegro Microsystems Inc
Datasheet

Specifications of A4985SETTR-T

Applications
Stepper Motor Driver, 2 Phase
Number Of Outputs
1
Current - Output
*
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
32-VFQFN Exposed Pad
Motor Type
Stepper
No. Of Outputs
2
Output Current
1A
Output Voltage
35V
Supply Voltage Range
3V To 5.5V
Driver Case Style
QFN
No. Of Pins
32
Operating Temperature Range
-20°C To +85°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
620-1374 - Board Eval Motor Control A4985
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
A4985
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
DS(ON)
I
I
V
t
I
V
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
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
= 800 mA
OUT
F
= 800 mA
= –800 mA
= –800 mA
=
= 70.71%
= 100.00%
38.27%
And Overcurrent Protection
V
115 Northeast Cutoff, Box 15036
DD
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Min.
–20
–20
100
3.0
0.7
1.1
2.7
20
23
–3
8
0
5
0
0.7
Typ.
<1.0
<1.0
700
700
100
475
165
2.8
50
30
30
15
90
11
1
0
2
V
DD
Max.
900
900
±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
mA
mA
mA
mA
mV
μA
μA
μA
μA
μA
°C
°C
μs
μs
μs
ns
%
%
%
%
V
V
V
V
V
V
V
V
A
V
4

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