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参数资料
| 型号： | 8925 |
| 厂商： | Allegro MicroSystems, Inc. |
| 英文描述： | 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH LINEAR CURRENT CONTROL AND POWER DMOS OUTPUTS |
| 中文描述： | 3相无刷直流电动机控制器/驱动器，线性电流控制和电源DMOS输出 |
| 文件页数： | 3/8页 |
| 文件大小： | 86K |
| 代理商： | 8925 |
8925
3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER
WITH LINEAR CURRENT CONTROL
AND POWER DMOS OUTPUTS
ELECTRICAL CHARACTERISTICS CONTINUED
Logic Output Voltage
(FAULT, TACH)
V
OUT(0)
I
OUT
= 3 mA
—
—
0.8
V
V
OUT(1)
I
OUT
= -50
μ
A
2.0
—
—
V
Error Amplifier
Input Bias Current
I
IB
V
CM
= 0.01 V
—
5.0
10
μ
A
Input Offset Voltage
V
OS
V
CM
= 1.0 V
—
3.0
5.0
mV
Input Common-Mode Voltage Range
V
IC
0.01
—
6.0
V
Error Voltage Gain
A
VD
V
S OUT
/ V
S IN
, V
CM
= 1.0 V
—
80
—
dB
Unity Gain Bandwidth
BW
—
1.0
—
MHz
Common-Mode Rejection Ratio
CMRR
—
80
—
dB
Power Supply Rejection Ratio
Miscellaneous
PSRR
—
50
—
dB
Current Sense Gain
A
iCS
I
OUT
= -1.0 A
1/1k
1/1.2k
1/1.4k
—
Current-Sense Matching
—
I
OUT
= -1.0 A
—
±
3.0
±
5.0
%
Under-Voltage Trip Point
V
CC
8.0
—
9.5
V
Hall Input Current
I
IN(0)
V
IN
= 0 V
—
-500
-1000
μ
A
I
IN(1)
V
IN
= 5.0 V
—
-250
-500
μ
A
Hall Input Threshold
V
IN
—
3.8
—
V
Hall Input Pull-Up Resistance
R
PU
—
25
—
k
NOTE: Negative current is defined as coming out of (sourcing) the specified device terminal.
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
X = Irrelevant
Z = High Impedance
Hall Sensor Inputs
Outputs
H
1
H
2
H
3
ENABLE BRAKE FAULT
OUT
A
OUT
B
OUT
C
High
High
High
Low
Low
Low
Low
Low
High
High
High
Low
High
Low
Low
Low
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
Z
Low
Low
Z
Low
Z
High
High
Z
Low
Z
Low
Low
Z
High
High
High
Low
X
High
Low
X
High
Low
X
High
High
Low
High
High
High
Low
Low
X
Z
Z
Z
Z
Z
Z
Z
Z
Z
X
X
X
X
Low
X
Low
Low
Low
COMMUTATION TRUTH TABLE
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