LB1875 Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LB1875

Polygon Mirror Motor Predriver IC

SANYO -> Panasonic 

Continued from preceding page

Pin number Pin name

11

LD1I

LB1875

VREG

Equivalent circuit

12

LD2

11 12

13

PD

VREG

A11359

13

Pin function

Phase lock detector output

On when PLL phase lock is achieved.

Open collector output

Phase lock detector output

(LD1 inverted output)

On when PLL phase lock is achieved.

Open collector output

Phase comparator output (PLL output)

Outputs the phase difference as a signal

with changing pulse duty cycle. The

higher the duty cycle, the higher the

output current.

14

EI

VREG

A11360

Differential amplifier input

15

EO

16

TOC

17

SOFT

VREG

200Ω

14

A11361

VREG

15

20 kΩ

A11362

200Ω

17

200Ω

16

A11363

Differential amplifier output

Output current increases at Low.

Torque control input

Normally connected to EO pin. When

TOC pin goes Low, duty cycle of UH,

VH, WH (direct PWM mode) or PWM

output (PAM mode) changes, resulting

in increased torque.

Soft start control pin

Connect to ground via a capacitor.

Leave open when soft start is not to be

used.

Continued on next page

No. 6002-14/17

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