A3909 データシートの表示（PDF） - Allegro MicroSystems
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A3909 Datasheet PDF : 10 Pages
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A3909
Dual Full Bridge Motor Driver
Motor Operation Truth Table
Stepper Motor
IN1
IN2
IN3
IN4
OUT1
OUT2
OUT3
OUT4
Function
0
0
0
0
Off
Off
Off
Off
Sleep Mode Sleep Mode
1
0
1
0
H
L
H
L
Step 1
Step 1
0
0
1
0
Off
Off
H
L
–
Step 2
0
1
1
0
L
H
H
L
Step 2
Step 3
0
1
0
0
L
H
Off
Off
–
Step 4
0
1
0
1
L
H
L
H
Step 3
Step 5
0
0
0
1
Off
Off
L
H
–
Step 6
1
0
0
1
H
L
L
H
Step 4
Step 7
1
0
0
0
H
L
Off
Off
–
Step 8
DC Motors (Dual)
IN1 or IN3
IN2 or IN4
OUT1
OUT2
OUT3
OUT4
Function
0
0
Off
Off
Off
Off
High Impedance
(Sleep Mode) / Coast
1
0
H
L
H
L
Forward
0
1
L
H
L
H
Reverse
1
1
L
L
L
L
Brake
DC Motor (Single, Paralleled)
IN1 or IN3
IN2 or IN4
OUT1
OUT2
OUT3
OUT4
Function
0
0
Off
Off
Off
Off
High Impedance
(Sleep Mode) / Coast
1
0
H
L
H
L
Forward
0
1
L
H
L
H
Reverse
1
1
L
L
L
L
Brake
DC Motor (External PWM)
IN1 or IN3
IN2 or IN4
OUT1
OUT2
OUT3
OUT4
Function
1
0
H
L
H
L
Forward
0
0
Off
Off
Off
Off
Fast Decay
0
1
L
H
L
H
Reverse
0
0
Off
Off
Off
Off
Fast Decay
1
0
H
L
H
L
Forward
1
1
L
L
L
L
Slow Decay
0
1
L
H
L
H
Reverse
1
1
L
L
L
L
Slow Decay
NOTE: 0 = logic low with VINx < VIN(0)(max), 1 = logic high with VINx > VIN(1)(min), H = voltage high, source driver on, L = voltage low, sink driver on
Allegro MicroSystems, LLC
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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