Continued from preceding page.
Pin No. Symbol Voltage
LB11676V
Function
9
VSP
Speed signal (motor induction voltage) detection
10
IN+
Speed signal error amplifier reference input
11
OUT
Speed signal error amplifier output.
The motor current is fed back.
Equivalent circuit
VCC
9
GND
VCC
10
GND
VCC
2kΩ
25µA
2kΩ
11
GND
12
RI
13
TC1
14
TC2
Detects the motor current.
Sets the slope of the rise and fall of the motor current.
12
GND
11
VCC
13
Sets the slope of the rise and fall of the motor current.
GND
VCC
14
100µA
100µA
GND
Continued on next page.
No. 7103-5/8