LB11872H(2002) 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LB11872H
(Rev.:2002)

Three-Phase Brushless Motor Driver for Polygonal Mirror Motors

SANYO -> Panasonic 

Continued from preceding page.

Pin No. Pin

Function

LB11872H

Control amplifier frequency correction.

Inserting a capacitor (about 5600 pF) between this pin

21

FC

and ground will stop closed loop oscillation in the current

control system. The output current response

characteristics will be degraded if the capacitor is too

large.

Equivalent circuit

VREG

21

Vcc

Stabilized power supply (6.3 V)

22

VREG Insert a capacitor (about 0.1 µF) between this pin and

22

ground for stabilization.

23

VCC Power supply

SUB pin.

24

SUB

Connect this pin to ground.

Output current detection.

25

RF

Insert low-valued resistors (Rf) between these pins and

ground. The output current will be limited to the value

set by the equation IOUT = VL/RF.

VREG

26

OUT1 Motor drive outputs.

27

OUT2 If the output oscillates, insert a capacitor (about 0.1 µF)

28

OUT3 between this pin and ground.

Vcc

300Ω

1

10

11

13

FRAME

NC

GND

No connection (NC) pins.

These pins may be used for wiring connections.

Ground

26 27 28

25

No. 7257 -9/13

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