A3980 Allegro MicroSystems, Inc., A3980 Datasheet - Page 4

• Manufacturer Part Number: A3980
• Description: Automotive DMOS Microstepping Driver with Translator
• Manufacturer: Allegro MicroSystems, Inc.

ELECTRICAL CHARACTERISTICS
1
for individual units, within the specifi ed maximum and minimum limits.
2
3
Current Control
Blank Time
Fixed Off Time
Mixed Decay Trip Points
Crossover Dead Time
Recommended Reference Input Voltage
Reference Input Current
Current Trip-Level Error
Thermal Protection
Thermal Shutdown
Thermal Shutdown Hysteresis
Diagnostics
Max V
Max V
V
Minimum Load Current
V
V
V
V
V
Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary
Negative current is defi ned as coming out of (sourcing from) the specifi ed device pin.
err
DS
BB
BB
REG
DD
DD
I
= (I
Overvoltage Lockout
Overvoltage Lockout Hysteresis
Fault Measurement Delay
Enable Threshold
Enable Threshold Hysteresis
Undervoltage Lockout
DS
DS
Trip
on High-Side Bridge FETs
on Low-Side Bridge FETs
– I
Characteristics
Prog
) ⁄ I
Prog
3
, where I
2
Automotive DMOS Microstepping Driver with Translator
Prog
= %I
TripMAX
(continued) at T
Symbol
V
V
t
V
PFD
V
PFD
BLANK
V
T
V
V
V
T
I
t
T
err
I
OVBH
UVDH
t
REF
DSHT
DSLT
SCT
×
SDH
OVB
UVR
UVD
OFF
REF
OC
DT
SD
I
I
H
L
TripMAX
R
R
–
–
–
–
V
V
V
–
–
Sampled after t
Sampled after t
–
w.r.t. I
V
–
V
V
–
.
T
T
REF
REF
REF
BB
REG
DD
J
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
= 56 K , C
= 56 K , C
= –40°C to +150ºC, V
rising
rising
= 4 V, %I
= 4 V, %I
= 4 V, %I
falling
TRIPMAX
Test Conditions
T
T
TripMAX
TripMAX
TripMAX
= 680 pF
= 680 pF
BLANK
BLANK
at Home position
+ t
+ t
= 38%
= 70%
= 100%
SCT
SCT
BB
= 14 V, V
DD
Min.
2.45
700
100
160
0.8
5.3
30
–3
32
50
–
–
–
–
–
–
–
2
= 3.0 to 5.5 V (unless otherwise noted)
0.60 V
0.21 V
Typ.
950
475
170
700
100
1.5
1.5
5.7
2.7
38
15
35
34
–
0
–
–
1
DD
DD
Max.
1200
2.95
800
±15
±10
180
6.0
46
±5
36
–
4
3
–
–
–
–
–
4
–
A3980
Units
mV
µA
ns
µs
ns
ºC
ºC
ns
%
%
V
V
V
V
V
V
V
V
4