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4.4
BA6956AN (IC981) : Reversible motor driver
• Pin layout & Block diagram
• Pin function
Pin No. Symbol Function
1
VREF
Output high voltage level control terminal
2
OUT2
Output terminal for motor
3
RNF
GND of driver division
4
OUT1
Output terminal for motor
5
VM
Power supply for driver division
6
Vcc
Power supply for signal division
7
FIN
Input terminal for control logic
8
GND
GND
TE
L 13942296513
9
RIN
Input terminal for control logic
4.5
BD4833FVE-W (IC702) : Regulator
• Pin layout
V
1
OUT
SUB
2
N.C.
3
• Pin functions
www
Pin No
Symbol
1
VOUT
Reset output
2
SUB
Sub slate (connect to GND)
.
3
N.C.
Non connect
4
GND
GND
5
VDD
Power supply voltage
1-38 (No.49831)
http://www.xiaoyu163.com
1
2
3
4
5
V
DD
4
GND
Function
x
ao
u163
y
i
http://www.xiaoyu163.com
2 9
8
TSD
CONTROL LOGIC
5
6
7
8
• Truth table
FIN
RIN
OUT1 OUT2
H
L
H
L
H
L
H
H
L
L
L
OPEN OPEN Stand-by mode
Q Q
3
6 7
1 3
• Block diagram
Vref
.
9 4
2 8
9
MODE
L
Forward rotation mode
H
Reverse rotation mode
L
Break Mode
1 5
0 5
8
2 9
9 4
VDD
GND
m
co
9 9
2 8
9 9
VOUT
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