LB1821 Sanyo, LB1821 Datasheet - Page 11

• Manufacturer Part Number: LB1821
• Description: Power Brushless Motor Pre-Driver IC for OA Equipment
• Manufacturer: Sanyo

Pin Functions
Pin No.
43
1
2
3
4
5
INTREF
INT
INT
D
P
Pin
LD
OUT
OUT
OUT
IN
Integrating amplifier output (speed control)
Integrating amplifier inverting input
Integrating amplifier noninverting input
(a potential of 1/2 V
Speed discriminator output
Outputs a low level for over speed.
Acceleration
Speed control system PLL output
Outputs the phase comparison result for
1/2 f
Speed lock detection output
Open collector output
Goes low when the motor speed is within the speed lock
range (±6.25%).
CLK
and 1/2 f
high, deceleration
FG
CC
.
)
Functions
low
LB1821M
Equivalent circuit
Continued on next page.
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