LB1876 Ver la hoja de datos (PDF) - ON Semiconductor

Número de pieza

componentes Descripción

Fabricante

LB1876

Monolithic Digital IC For Polygon Mirror Motors 3-phase Brushless Motor Driver

ON Semiconductor 

LB1876

Continued from preceding page.

Pin No. Pin name

Function

16 FGFIL

FG filter pin.

If noise on the FG signal is a problem, insert a capacitor

(under about 2200pF) between this pin and ground.

Equivalent curcuit

VREG

16

17 CSD

18 PH

Restraint protection circuit operating time setting pin/reset

pulse setting pin.

A protection operating time of about 8 seconds can be set by

connecting a capacitor (about 0.068μF) between this pin

and ground. If the protection circuit is not used, connect a

capacitor and resistor (about 4700pF, 220kΩ) in parallel

between this pin and ground.

RF waveform smoothing pin.

If noise on the RF signal is a problem, insert a capacitor

between this pin and ground.

VREG

VREG

19 TOC

Torque specifying input pin.

Normally, this pin is connected to the EO pin.

When the TOC voltage falls, the on duty of the lower side

transistor increases.

VREG

300Ω

17

500Ω

18

300Ω

19

20 EO

Error amplifier output pin.

21 EI

Error amplifier input pin.

VREG

VREG

20

40kΩ

300Ω

21

Continued on next page.

No.6201-7/12

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