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LB11923V

Three-Phase Brushless Motor Driver

ON Semiconductor 

LB11923V

Three-Phase Brushless

Motor Driver

Monolithic Digital IC

Overview

The LB11923V is a pre-driver IC designed for variable-speed

control of 3-phase brushless motors. It can be used to implement

a motor drive circuit with the desired output capacity (voltage,

current) by using discrete transistors for the output stage. It

implements direct PWM drive for minimal power loss. Since the

LB11923V includes a built-in VCO circuit, applications can control

the motor speed arbitrarily by varying the external clock frequency.

Features

• Direct PWM Drive Output

• Speed Discriminator + PLL Speed Control Circuit

• Speed Lock Detection Output

• Built-in Crystal Oscillator Circuit

• Forward/Reverse Switching Circuit

• Braking Circuit (Short Braking)

• Full Complement of On-chip Protection Circuits, Including Lock

Protection, Current Limiter, and Thermal Shutdown Protection

Circuits

© Semiconductor Components Industries, LLC, 2013

1

March, 2018 − Rev. 1

www.onsemi.com

SSOP44

CASE 565AW

MARKING DIAGRAM

XXXXXXXXXX

YMDDD

XXXX = Specific Device Code

Y = Year

M = Month

DDD = Additional Traceability Data

PIN ASSIGNMENT

1

VREG

S/S

CLK

F/R

BR

N1

N2

FGS

LD

DOUT

POUT

NC

INT.REF

INT.IN

INT.OUT

TOC

PWM

NC

FIL

R

C

CSD

22

(Top View)

44

IN1+

IN1–

IN2+

IN2–

IN3+

IN3–

VCC 1

VCC 2

WH

WL

VH

VL

UH

UL

GND2

GND1

RF

RFGND

NC

FGOUT

FGIN–

FGIN+

23

ORDERING INFORMATION

See detailed ordering and shipping information on page 20 of

this data sheet.

Publication Order Number:

LB11923V/D

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