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Ordering number : ENN6067A

Monolithic Digital IC

LB1923M

Power Brushless Motor Pre-Driver IC

for OA Equipment

Overview

The LB1923M is a pre-driver IC that supports direct

PWM drive and is appropriate for the power brushless

motors used in office automation equipment. A motor

drive circuit with the desired output capability (voltage

and current characteristics) can be constructed by

attaching a driver array at the IC output. The LB1923M

includes on chip a speed control circuit that allows the

motor speed to be varied using an external clock.

including lock protection, current limiter, and

thermal shutdown protection circuits.

Package Dimensions

unit: mm

3148A-QFP44MA

[LB1923M]

13.2

1.0

10.0

13.2

0.35

0.2

10.0

Features

鈥?/div>

Direct PWM drive output

Speed discriminator + PLL speed control circuit

FG and integrating amplifiers

Forward/reverse switching circuit

Braking circuit (short braking)

Speed lock detection output

Full complement of on-chip protection circuits,

44

1

0.8

(1.0)

Specifications

Absolute Maximum Ratings

at Ta = 25擄C

Parameter

Maximum supply voltage

Maximum input current

Output current

Allowable power dissipation

Operating temperature

Storage temperature

Symbol

V

CC

max

I

REG

max

I

O

max

Pd max

Topr

Tstg

V

REG

UL, VL, and WL outputs

Conditions

0.1

2.8max

(2.5)

SANYO: QIP44MA

Ratings

9

10

30

0.9

鈥?0 to +80

鈥?5 to +150

Unit

V

mA

W

擄C

Allowable Operating Ranges

at Ta = 25擄C

Parameter

Supply voltage

Input current range

FG Schmitt output applied voltage

FG Schmitt output current

Lock detection output current

Symbol

V

CC

I

REG

V

FGS

I

FGS

I

LD

V

REG

pin (7 V)

Conditions

Ratings

4.4 to 7.0

1 to 5

0 to 8

0 to 5

0 to 20

Unit

V

mA

V

mA

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鈥檚

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.

SANYO Electric Co.,Ltd. Semiconductor Company

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

42003AS (OT) / 63099TH (OT) No. 6067-1/17

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LB1923M Datasheet

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