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LB1821 Datasheet(PDF) 11 Page - Sanyo Semicon Device

Part # LB1821
Description  Power Brushless Motor Pre-Driver IC for OA Equipment
PDF  16 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1821 Datasheet(HTML) 11 Page - Sanyo Semicon Device

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No. 5686-11/16
LB1821M
Pin No.
Pin
Functions
Equivalent circuit
Pin Functions
1
INTOUT
Integrating amplifier output (speed control)
2
INTIN
Integrating amplifier inverting input
43
INTREF
Integrating amplifier noninverting input
(a potential of 1/2 VCC)
3
DOUT
Speed discriminator output
Outputs a low level for over speed.
Acceleration
→ high, deceleration → low
4
POUT
Speed control system PLL output
Outputs the phase comparison result for
1/2 fCLK and 1/2 fFG.
5
LD
Speed lock detection output
Open collector output
Goes low when the motor speed is within the speed lock
range (±6.25%).
Continued on next page.



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