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參數(shù)資料
| 型號(hào)： | A1441SELLT-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation |
| 中文描述： | 低電壓全橋式無(wú)刷直流電動(dòng)機(jī)霍爾元件整流驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 3/4頁(yè) |
| 文件大?。?/td> | 156K |
| 代理商： | A1441SELLT-T |
3
A1441-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation
A1441
DEVICE CHARACTERISTICS over the voltage and temperature operating range, unless otherwise specified
Characteristics
Symbol
Supply Voltage
V
DD
Running
I
LOAD
= 70 mA, V
DD
= 3.6 V
I
LOAD
= 100 mA, V
DD
= 3.6 V
I
LOAD
= 70 mA, V
DD
= 2.2 V
Sleep Mode Supply Current
I
DD(Sleep)
Load Current Rise Time
2
t
r(ILOAD)
V
DD
= 3.6 V
Chopping Settling Time
3
t
s(CHOP)
V
INLO
V
INHI
ˉˉˉ ˉˉˉˉˉˉ Input Current
I
IN
Crossover Dead Time
4
t
DT
VOUT switching
Restart Delay
5
t
RS
B
OP
B
RP
B
HYS
B
OP
– B
RP
;
B
OP
> B
RP
B<Brp
B>Bop
B<Brp
B>Bop
1
Either
V
OUT(Sat)
= V
Q1(Sat)
+ V
Q4(Sat)
or V
OUT(Sat)
= V
Q2(Sat)
+ V
Q3(Sat)
.
Total output saturation voltage is a sum of the voltages
across the active output transistors.
2
Time period required for current to change from 10% to 90% of it’s value.
3
Chopping settling time is the required time to have valid device output after power up of the device.
4
Crossover dead time is a time period during which all output transistors are switched off.
5
Restart delay is a time period during which only one pair of the output transistors is switched on.
Test Conditions
Min.
2.0
–
–
–
–
–
–
–
V
DD
–0.7
–
–
–
–
–75
–
Typ.
–
300
450
400
–
10
30
–
–
–
2
100
35
–35
70
LOW
HIGH
HIGH
LOW
Max.
4.0
–
–
–
10
–
–
0.5
–
1
–
–
75
–
–
Units
V
mV
mV
mV
μ
A
μ
s
μ
s
V
V
μ
A
μ
s
ms
G
G
G
–
–
–
–
Total Output Saturation Voltage
1
V
OUT(Sat)
ˉˉˉ ˉˉˉˉˉˉ Input Threshold
Magnetic Switchpoints
Startup Polarity
V
OUT1
V
OUT2
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