IC Descriptions.
GB 55ASD-1 9.
BA6856FP: 3 PHASE MOTOR DRIVER FOR DVD PLAYERS
Features
• /3-phase, full-wave pseudo linear driving system
• built-in power save
• built-in therma shut down circuit
• built-in current limit circuit
• built in Hall bias circuit
• built in FG-output (3-phase parallel output)
• with switching function of regular/ reverse rotations
blockdiagram
-+
REV
PS
-
+
H BIAS
CONTROL
GAIN
DRIVER
+
-
+
-
+
-
+
-
+
-
+
-
MT1
29
MT2
30
NC1
NC2
NC3
NC4
NC5
PS
23
REV
24
RNF
28
VCC
25
VH
19
VM1
26
VM2
27
A1
A2
A3
CNF
20
EC
22
21
ECR
FG1
18
FG2
17
FG3
16
GND
8
H1+
H1-
H2+
H2-
H3+
H3-
BA6856FB
3
5
7
1
2
9
10
4
6
11
12
15
13
14
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