LB11872H データシートの表示（PDF） - SANYO -> Panasonic

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LB11872H

For Polygonal Mirror Motors Three-Phase Brushless Motor Driver

SANYO -> Panasonic 

LB11872H

Pin Functions

Pin No.

2

3

4

5

6

7

Pin name

IN2+

IN2-

IN1+

IN1-

IN3+

IN3-

Function

Hall effect sensor signal inputs.

These inputs are high when IN+ is greater than

IN- and low when IN- is greater than IN+.

Insert capacitors between the IN+ and IN– pins to

reduce noise.

An amplitude of over 50mVp-p and under

350mVp-p is desirable for the Hall input signals.

Kickback can occur in the output waveform if the

Hall input amplitude is over 350mVp-p.

357

Equivalent circuit

VCC

300Ω

300Ω

246

8

AGC

AGC amplifier frequency characteristics

correction.

Insert a capacitor (about 0.022μF) between this

pin and ground.

VREG

300Ω

8

9

MN

Monitor pin.

This pin should be left open in normal operation.

12

CSD

Used for both initial reset pulse generation and as

the reference time for constraint protection

circuits.

Insert a capacitor between this pin and ground.

VREG

300Ω

12

14

FG

FG pulse output.

This is an open-collector output.

VREG

14

15

S/S

Start/stop control.

Low : Start 0 to 1.0V

High : Stop 2.0V to VREG

This pin goes to the high level when open.

VREG

33kΩ

5kΩ

15

30kΩ

Continued on next page.

No.7257-6/11

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