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FS-SD990 / FS-SD770
FS-SD550
KIA78S06P-T (IC702) : Regulator
1. Pin layout
Z1
1 2 3
TA8409F-W (IC108) : Bridge driver
1. Pin layout
1
5
3. Block diagram
STANDBY
CIRCUIT
IN1
9/10
1/1
IN2
THERMAL
SHUTDOWN
CIRCUIT
1-26
2. Block diagram
Q14
Q3
Q1
Q4
Q16
Q2
Q7
2. Pin function
10
6
10
Vcc
2/2
Q5
Q6
C1
Q10
Q9
Q8
Pin
FUNCTION
SYMBOL
No.
1
IN2
INput terminal
2
Vcc
Supply voltage terminal for logic
3
OUT2
Output terminal
4
NC
Non connection
5
GND
GND terminal
6
NC
Non connection
7
Vs
Supply voltage terminal for motor driver
8
OUT1
Output terminal
9
Vref
Reference voltage terminal for control circuit
IN1
Input terminal
Vs
6/7
5/5 GND
3 INPUT
Q12
Q13
Q11
1 OUTPUT
2 COMMON
Vref
Vref
8/9
CIRCUIT
OUT1
7/8
M
3/3
OUT2
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