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A4984SLPTR-T Datasheet(PDF) 4 Page - Allegro MicroSystems

Part # A4984SLPTR-T
Description  DMOS Microstepping Driver with Translator and Overcurrent Protection
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A4984SLPTR-T Datasheet(HTML) 4 Page - Allegro MicroSystems

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DMOS Microstepping Driver with Translator
and Overcurrent Protection
A4984
4
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ELECTRICAL CHARACTERISTICS1 at TA = 25°C, VBB = 35 V (unless otherwise noted)
Characteristics
Symbol
Test Conditions
Min.
Typ.2
Max.
Units
Output Drivers
Load Supply Voltage Range
VBB
Operating
8
35
V
During Sleep Mode
0
35
V
Logic Supply Voltage Range
VDD
Operating
3.0
5.5
V
Output On Resistance
RDSON
Source Driver, IOUT = –1.5 A
320
430
Sink Driver, IOUT = 1.5 A
320
430
Body Diode Forward Voltage
VF
Source Diode, IF = –1.5 A
1.3
V
Sink Diode, IF = 1.5 A
1.3
V
Motor Supply Current
IBB
fPWM < 50 kHz
4
mA
Operating, outputs disabled
2
mA
Sleep Mode
10
μA
Logic Supply Current
IDD
fPWM < 50 kHz
8
mA
Outputs off
5
mA
Sleep Mode
10
μA
Control Logic
Logic Input Voltage
VIN(1)
VDD0.7
––
V
VIN(0)
––
VDD0.3
V
Logic Input Current
IIN(1)
VIN = VDD0.7
–20
<1.0
20
μA
IIN(0)
VIN = VDD0.3
–20
<1.0
20
μA
Microstep Select
RMS1
MS1 pin
100
RMS2
MS2 pin
50
Logic Input Hysteresis
VHYS(IN)
As a % of VDD
511
19
%
Blank Time
tBLANK
0.7
1
1.3
μs
Fixed Off-Time
tOFF
OSC = VDD or GND
20
30
40
μs
ROSC = 25 kΩ
23
30
37
μs
Reference Input Voltage Range
VREF
0–4
V
Reference Input Current
IREF
–3
0
3
μA
Current Trip-Level Error3
errI
VREF = 2 V, %ITripMAX = 38.27%
±15
%
VREF = 2 V, %ITripMAX = 70.71%
±5
%
VREF = 2 V, %ITripMAX = 100.00%
±5
%
Crossover Dead Time
tDT
100
475
800
ns
Protection
Overcurrent Protection Threshold4
IOCPST
2.1
A
Thermal Shutdown Temperature
TTSD
165
°C
Thermal Shutdown Hysteresis
TTSDHYS
–15–°C
VDD Undervoltage Lockout
VDDUVLO
VDD rising
2.7
2.8
2.9
V
VDD Undervoltage Hysteresis
VDDUVLOHYS
–90–
mV
1For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.
2Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual
units, within the specified maximum and minimum limits.
3VERR = [(VREF/8) – VSENSE] / (VREF/8).


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