A3979SLP Allegro Microsystems Inc, A3979SLP Datasheet - Page 4
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A3979SLP
Manufacturer Part Number
A3979SLP
Description
IC DRIVER MICROSTEPPING 28-TSSOP
Manufacturer
Allegro Microsystems Inc
Datasheet
1.A3979SLPTR-T.pdf
(14 pages)
Specifications of A3979SLP
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
Operating Current
12mA
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
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
A3979SLP-T
Manufacturer:
TEMIC
Quantity:
23
Part Number:
A3979SLP-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Company:
Part Number:
A3979SLPT
Manufacturer:
A
Quantity:
5 510
Company:
Part Number:
A3979SLPT
Manufacturer:
AD
Quantity:
5 510
Part Number:
A3979SLPT
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Part Number:
A3979SLPTR
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Part Number:
A3979SLPTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
A3979
Continued on the next page...
ELECTRICAL CHARACTERISTICS
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 Supply Current
Logic Input Voltage
Logic Input Current
Reference Input Voltage Range
Reference Input Current
HOME Output Voltage
Mixed Decay Mode Trip Point
Gain (G
STEP Pulse Width
Blank Time
Fixed Off-Time
Crossover Dead Time
m
Characteristics
) Error
3
2
2
V
V
Symbol
R
V
t
HOME(1)
HOME(0)
V
V
V
V
BLANK
I
DS(On)
I
I
V
I
t
V
I
I
IN(1)
IN(0)
PFDH
DSS
REF
PFDL
OFF
t
DMOS Microstepping Driver with Translator
V
E
IN(1)
IN(0)
t
DD
REF
BB
DT
DD
W
BB
G
F
at T
A
= 25°C, V
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
f
Outputs off
Sleep mode
V
V
Operating
I
I
V
V
V
R
R
Synchronous rectification enabled
PWM
PWM
HOME(1)
HOME(0)
OUT
OUT
IN
IN
REF
REF
REF
T
T
= 56 kΩ, C
= 56 kΩ, C
= 0.3
= 0.7
< 50 kHz
< 50 kHz
= 2 V,
= 2 V,
= 2 V,
= V
= 0 V
= –200 μA
= 200 μA
×
BB
×
BB
Test Conditions
V
V
Phase Current =
Phase Current
Phase Current
DD
OUT
F
DD
= 35 V, V
= 2.5 A
T
T
OUT
F
= 680 pF
= 680 pF
= 2.5 A
= –2.5 A
= –2.5 A
DD
= 3.0 to 5.5 V (unless otherwise noted)
= 70.71%
= 100.00%
38.27%
0.7
0.7
Min.
–20
–20
700
100
3.0
×
×
30
8
0
–
–
–
–
–
–
–
–
–
–
–
–
–
0
–
–
–
–
–
–
–
1
V
V
115 Northeast Cutoff, Box 15036
DD
DD
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
0.21
0.6
Typ.
<1.0
<1.0
0.28
0.22
<1.0
<1.0
950
475
5.0
38
×
–
–
–
–
–
–
–
–
–
–
–
–
–
0
–
–
×
–
–
–
–
V
V
1
DD
DD
0.3
0.3
0.335
0.265
Max.
1200
±5.0
±5.0
V
–20
±10
800
1.4
1.4
8.0
6.0
5.5
35
35
20
20
12
10
20
20
20
±3
×
46
×
–
–
–
–
–
DD
V
V
DD
DD
Units
mA
mA
mA
mA
μA
μA
μA
μA
μA
μA
μA
μs
ns
μs
ns
%
%
%
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V
V
4