(No.22023)1-31
6.8
BA6664FM-X (IC251) : Motor driver
• Pin layout & Block diagram
• Pin function
28
RNF
A3
A2
A1
GND
H1+
H1-
H2+
H2-
H3+
H3-
VM GSW VCC
2
4
7
8
9
10
11
12
13
14
27
26
25
24
23
22
21
20
19
18
17
16
15
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+ -
DRIVER
GAIN
CONTROL
TL
HALL AMP
TSD
PS
TORQUE
VCC
VCC
SENSE AMP
GAIN
SWITCH
VCC
CURRENT
SENSE AMP
SHORT BRAKE
BRAKE MODE
Hall Bias
R Q Q
D CK
VH
BR
FG
PS
EC
ECR
FR
FG2
SB
CNF
Pin No.
Symbol
Function
1
NC
NC
2
A3
Output3 for motor
3
NC
NC
4
A3
Output2 for motor
5
NC
NC
6
NC
NC
7
A1
Output1 for motor
8
GND
GND
9
H1+
Positive input for hall input Amp1.
10
H1-
Negative input for hall input Amp1.
11
H2+
Positive input for hall input Amp2.
12
H2-
Negative input for hall input Amp2.
13
H3+
Positive input for hall input Amp3.
14
H3-
Negative input for hall input Amp3.
15
VH
Hall bias terminal
16
BR
Brake Mode terminal
17
CNF
Capacitor connection pin for phase compensation
18
SB
Short brake terminal
19
FG2
3Phase synthesized FG signal output termnal
20
FR
Rotation detect signal output terminal
21
ECR
Torque control standard voltage input terminal
22
EC
Torque control voltage input terminal
23
PS
START/STOP switch
24
FG
FG signal output terminal
25
VCC
Power supply for driver division
26
GSW
Gain switch
27
VM
Power supply for driver division
28
RNF
Resistance connection pin for output current sense
FIN
FIN
GND