Ordering number : ENN6201A

61202RM (OT)/62599RM (KI) No. 6201-1/14

Overview

The LB1876 is a driver for polygon mirror motors such as

used in laser printers and similar equipment.

It incorporates all necessary circuitry (speed control +

driver) on a single chip. Direct PWM drive enables drive

with low power loss.

Functions and Features

• Three-phase bipolar drive

• Direct PWM drive technique

• Built-in lower side output diode

• Output current limiter

• Reference clock input circuit (FG frequency equivalent)

• PLL speed control circuit

• Phase lock detector output (with masking function)

• Built-in protection circuitry includes current limiter,

restraint protection, overheat protection, low-voltage

protection, etc.

• Brake method switching circuit (free-run or reverse

torque)

• 5V regulator output

• Power save function

Package Dimensions

unit: mm

3235A-HSOP36

(6.2)

36

1

0.8

17.8

2.7

0.3

0.25

(0.5)

2.0

SANYO: HSOP36

[LB1876]

LB1876

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Three-Phase Brushless Motor Driver

for Polygon Mirror Motors

Monolithic Digital IC

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage 1

30

V

Maximum output current

T

≤ 500 ms

2.5

A

Allowable power dissipation 1

Pd max1

IC only

0.9

W

Allowable power dissipation 2

Pd max2

*With substrate

2.1

W

Operating temperature

Topr

–20 to +80

°C

Storage temperature

Tstg

–55 to +150

°C

Specifications

Maximum Ratings at Ta = 25°C

* Substrate: 114.3