Continued from preceding page
Pin number Pin name
11
INT
OUT
VREG
LB1928
Equivalent circuit
11
Pin function
Integrator output pin (speed control pin)
12
INT
IN
PWM comparator
VREG
A12988
Integrator input pin.
13
POUT
VREG
300Ω
12
A12989
PLL output pin.
300Ω
13
14
DOUT
VREG
300Ω
A12990
14
Speed discriminator output pin.
Acceleration: High, Deceleration: Low
15
LD
VREG
A12991
15
Speed lock detection pin.
When motor rotation is within lock range
(±6.25%): Low
Withstand voltage: 30V max.
A12992
Continued on next page
No. 6198-7/11