LB1876_09 SANYO [Sanyo Semicon Device], LB1876_09 Datasheet

LB1876_09

Manufacturer Part Number

LB1876_09

Description

For Polygon Mirror Motors 3-phase Brushless Motor Driver

Manufacturer

SANYO [Sanyo Semicon Device]

Datasheet

1.LB1876_09.pdf (12 pages)

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Ordering number : EN6201B

LB1876

Overview

Features

Specifications

Absolute Maximum Ratings at Ta = 25°C

*Specified board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board.

Maximum supply voltage

Maximum output current

Allowable power dissipation

Operating temperature

Storage temperature

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.

• 3-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

Parameter

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

s products or equipment. To verify symptoms and states that cannot be evaluated in an independent

V CC max

I O max

Pd max1

Pd max2

Topr

Tstg

Symbol

Monolithic Digital IC

For Polygon Mirror Motors

3-phase Brushless Motor Driver

t ≤ 500ms

Independent IC

Mounted on a specified board*

Conditions

31109 MS/61202RM (OT)/62599RM (KI) No.6201-1/12

Ratings

s products or

-55 to +150

-20 to +80

2.5

0.9

2.1

Unit

°C

Related parts for LB1876_09

LB1876_09 Summary of contents

Page 1

Ordering number : EN6201B Monolithic Digital IC LB1876 For Polygon Mirror Motors 3-phase Brushless Motor Driver Overview The LB1876 is a driver for polygon mirror motors such as used in laser printers and similar equipment. It incorporates all necessary circuitry ...

Page 2

Allowable Operating Ranges 25°C Parameter Symbol Power supply voltage range regulated output current I REG LD pin voltage V LD FGS pin voltage V FGS LD pin output current I LD FGS pin output ...

Page 3

Continued from preceding page. Parameter Symbol Phase Comparator Output Output High level voltage V PDH Output Low level voltage V PDL Output source current I PD − Output sink current Phase Lock Detector Output Output saturation voltage ...

Page 4

Package Dimensions unit : mm (typ) 3235A 17.8 (6.2) 2 (0.5) 2.0 0.8 0.3 Pin Assignment 3-phase Logic Truth Table IN1 IN2 IN3 ...

Page 5

Block Diagram FGFIL FGIN + FGIN − CLK CLK PWM PWM OSC S/S S/S BRSEL BRSEL CSD SD OSC IN1 + IN1 − IN2 + IN2 − VREG LB1876 VREG VREG FGS LD LDSEL LDSEL FG LD FILTER VREG PLL ...

Page 6

Pin Function Pin No. Pin name 2 OUT1 Motor drive output pins. 1 OUT2 PWM controls duty cycle ratio by lower transistors. 36 OUT3 Connect Schottky diodes between the outputs and GND3 Output block ground. 28 ...

Page 7

Continued from preceding page. Pin No. Pin name 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. 17 CSD Restraint protection circuit operating time ...

Page 8

Continued from preceding page. Pin No. Pin name 22 PD Phase comparator output pin. The phase error is converted to a pulse duty and output from this pin. 23 CLD Phase lock signal mask time setting pin. A mask time ...

Page 9

Continued from preceding page. Pin No. Pin name 31 VREG Stabilized power supply output (5V output) pin. Insert a capacitor between this pin and ground for stabilization. (About 0.1µF.) 32 LDSEL Phase lock signal mask switching pin. Low ...

Page 10

LB1876 Overview 1. Speed control circuit This IC provides high-precision, low-jitter, and stable motor rotation since it adopts a PLL speed control technique. This PLL circuit compares the phases of the edges on the CLK signal (falling edges) and the ...

Page 11

FG input signal Normally, one of the Hall sensor signals is input signal. If noise on the FG input is a problem, insert either a capacitor or a filter consisting of a capacitor and a resistor. ...

Page 12

SANYO Semiconductor Co.,Ltd. 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 ...

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