A3979SLPTR-T Allegro Microsystems Inc, A3979SLPTR-T Datasheet - Page 5
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A3979SLPTR-T
Manufacturer Part Number
A3979SLPTR-T
Description
IC DRIVER MICROSTEPPING 28-TSSOP
Manufacturer
Allegro Microsystems Inc
Datasheet
1.A3979SLPTR-T.pdf
(14 pages)
Specifications of A3979SLPTR-T
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
28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
Motor Type
DMOS
No. Of Outputs
2
Output Current
2.5A
Output Voltage
35V
Supply Voltage Range
3V To 5.5V
Driver Case Style
TSSOP
No. Of Pins
28
Operating Temperature Range
-20°C To +85°C
Operating Current
8mA
Operating Temperature Classification
Commercial
Package Type
TSSOP EP
Operating Supply Voltage (min)
3V
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
620-1148-2
A3979SLPTR-T
A3979SLPTR-T
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
A3979SLPTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
A3979
1
individual units, within the specified maximum and minimum limits.
2
3
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
ELECTRICAL CHARACTERISTICS, continued
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for
Negative current is defined as coming out of (sourcing from) the specified device pin.
E
*Additional thermal information available on Allegro Web site.
G
Package Thermal Resistance
= ( [ V
REF
Characteristics
Characteristic
/ 8] – V
SENSE
) / ( V
REF
/ 8 ).
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
V
Symbol
T
Symbol
UVLOHYS
V
JSDHYS
T
20
R
UVLO
DMOS Microstepping Driver with Translator
JSD
θJA
40
Increasing V
Maximum Power Dissipation, P
Two-layer PCB with 3.8 in.
connected with thermal vias and to device exposed pad
High-K PCB (multilayer with significant copper areas,
based on JEDEC standard)
60
at T
Test Conditions
Temperature (°C)
A
80
DD
= 25°C, V
100
Test Conditions*
BB
= 35 V, V
120
2
of copper area on each side
D(max)
140
DD
= 3.0 to 5.5 V (unless otherwise noted)
Min.
2.45
0.05
160
–
–
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Typ.
0.10
165
2.7
15
1
Value
32
28
Max.
2.95
–
–
–
Units
ºC/W
ºC/W
Units
°C
°C
V
V
5