A1441 ALLEGRO [Allegro MicroSystems], A1441 Datasheet - Page 3

• Manufacturer Part Number: A1441
• Description: Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A1441-DS
DEVICE CHARACTERISTICS over the voltage and temperature operating range, unless otherwise specified
Supply Voltage
Total Output Saturation Voltage
Sleep Mode Supply Current
Load Current Rise Time
Chopping Settling Time
¯ S ¯ ¯ L ¯ ¯ E ¯ ¯ E ¯ ¯ P ¯ Input Threshold
¯ S ¯ ¯ L ¯ ¯ E ¯ ¯ E ¯ ¯ P ¯ Input Current
Crossover Dead Time
Restart Delay
Magnetic Switchpoints
Startup Polarity
1
across the active output transistors.
2
3
4
5
Either
Time period required for current to change from 10% to 90% of it’s value.
Chopping settling time is the required time to have valid device output after power up of the device.
Crossover dead time is a time period during which all output transistors are switched off.
Restart delay is a time period during which only one pair of the output transistors is switched on.
V
OUT(Sat)
Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation
Characteristics
5
= V
Q1(Sat)
4
3
2
+ V
1
Q4(Sat)
V
I
Symbol
t
t
DD(Sleep)
s(CHOP)
r(ILOAD)
V
V
OUT(Sat)
V
B
V
V
B
B
t
OUT1
OUT2
t
or V
INLO
I
INHI
RS
HYS
DT
DD
IN
OP
RP
OUT(Sat)
Running
I
I
I
V
VOUT switching
B
LOAD
LOAD
LOAD
B<Brp
B>Bop
B<Brp
B>Bop
DD
OP
– B
= 3.6 V
= 70 mA, V
= 100 mA, V
= 70 mA, V
= V
RP
; B
Q2(Sat)
Test Conditions
OP
A1441
> B
DD
DD
+ V
DD
RP
= 3.6 V
= 2.2 V
= 3.6 V
Q3(Sat)
.
Total output saturation voltage is a sum of the voltages
V
DD
Min.
–75
2.0
–
–
–
–
–
–
–
–
–
–
–
–
–0.7
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
HIGH
HIGH
LOW
LOW
Typ.
300
450
400
100
–35
10
30
35
70
–
–
–
–
–
2
Max.
4.0
0.5
10
75
–
–
–
–
–
–
1
–
–
–
–
Units
mV
mV
mV
ms
μA
μA
μs
μs
μs
G
G
G
V
V
V
–
–
–
–
3