LB1927 Datasheet (Sanyo Semicon Device) - 3-phase Brushless Motor Driver

LB1927, 3-phase Brushless Motor Driver

Pin No.

28 1 2 3 5 Pin name OUT1 OUT2 OUT3 GND2 VM Output ground pin.

Output block power supply and output current detection pin.

Connect a resistor (Rf) between this pin and VCC to detect the output current as a voltage.

The output current is limited according to the equation IOUT = VRF/Rf.

Motor d

www.DataSheet.co.kr Ordering number : EN6197C Monolithic Digital IC LB1927 Overview For Office Automation Equipment 3-phase Brushless Motor Driver The LB1927 is a 3-phase brushless motor driver well suited for drum and paper feed motors in laser printers, plain-paper copiers and other office automation equipment.

Direct PWM drive allows control with low power losses.

Peripheral circuitry including speed control circuit and FG amplifier is integrated, thus allows drive circuit to be constru

LB1927 Features

* 3-phase bipolar drive (30V, 2.5A)

* Direct PWM drive technique

* Built-in diode for absorbing output lower-side kickback

* Speed discriminator and PLL speed control

* Speed lock detection output

* Built-in forward/reverse switching circuit