LB1821 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LB1821

Power Brushless Motor Pre-Driver IC for OA Equipment

SANYO -> Panasonic 

Pin Functions

Pin No.

Pin

LB1821M

Functions

1

INTOUT Integrating amplifier output (speed control)

Equivalent circuit

2

INTIN Integrating amplifier inverting input

Integrating amplifier noninverting input

43

INTREF (a potential of 1/2 VCC)

Speed discriminator output

3

DOUT Outputs a low level for over speed.

Acceleration → high, deceleration → low

Speed control system PLL output

4

POUT Outputs the phase comparison result for

1/2 fCLK and 1/2 fFG.

Speed lock detection output

5

LD

Open collector output

Goes low when the motor speed is within the speed lock

range (±6.25%).

Continued on next page.

No. 5686-11/16

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