N1908 MS JM/O0702AS(OT)/D1099TH(KI)/62599RM(KI) No.6197-1/11

http://onsemi.com

Semiconductor Components Industries, LLC, 2013

May, 2013

LB1927

Overview

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 constructed with a

single chip.

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

• Built-in protection circuitry includes current limiter, overheat protection, motor restraint protection, etc.

Specifications

Absolute Maximum Ratings

at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

VCC max

30

V

Maximum output current

IO max

T

≤ 500ms

2.5

A

Allowable power dissipation 1

Pd max 1

Independent IC

3

W

Allowable power dissipation 2

Pd max 2

With an arbitrary large heat sink

20

W

Operating temperature

Topr

-20 to +80

°C

Storage temperature

Tstg

-55 to +150

°C

Monolithic Digital IC

For Office Automation Equipment

3-phase Brushless Motor Driver

Ordering number : EN6197C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating

Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.