A3977 Allegro MicroSystems, Inc., A3977 Datasheet - Page 5

• Manufacturer Part Number: A3977
• Description: Microstepping DMOS Driver with Translator
• Manufacturer: Allegro MicroSystems, Inc.

ELECTRICAL CHARACTERISTICS at T
noted)
* Operation at a step frequency greater than the specifi ed minimum value is possible but not warranteed.
NOTES: 1. Typical Data is for design information only.
Mixed Decay Trip Point
Ref. Input Voltage Range
Reference Input Current
Gain (G
(note 3)
Crossover Dead Time
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
Logic Supply Current
Control Logic (cont’d)
www.allegromicro.com
2. Negative current is defi ned as coming out of (sourcing) the specifi ed device terminal.
3. E
m
Characteristic
) Error
G
= ([V
REF
/8] – V
SENSE
Symbol
)/(V
∆V
V
PFDH
PFDL
V
I
∆T
UVLO
E
I
t
REF
T
REF
UVLO
REF
DT
DD
G
J
J
/8)
Operating
V
V
V
SR enabled
Increasing V
f
Outputs off
Sleep mode
A
PWM
REF
REF
REF
= +25°C, V
< 50 kHz
= 2 V, Phase Current = 38.27%
= 2 V, Phase Current = 100.00%
= 2 V, Phase Current = 70.71%
Test Conditions
DD
BB
MICROSTEPPPING DMOS DRIVER
= 35 V, V
DD
= 3.0 V to 5.5V (unless otherwise
WITH TRANSLATOR
Min.
2.45
0.05
100
–
–
0
–
–
–
–
–
–
–
–
–
0.21V
0.6V
Typ.
0.10
475
165
2.7
15
–
0
–
–
–
–
–
–
DD
Limits
DD
Max.
±3.0
±5.0
±5.0
2.95
V
±10
800
12
10
20
–
–
DD
–
–
–
3977
Units
mA
mA
µA
°C
°C
µA
ns
%
%
%
V
V
V
V
V
5