© Semiconductor Components Industries, LLC, 2014

March, 2018 − Rev. 2

1

Publication Order Number:

LB11867RV/D

LB11867RV

Variable Speed

Single‐phase Full‐wave

Pre‐driver for Fan Motor

Monolithic Digital IC

Overview

LB11867RV is a single-phase bipolar driving motor pre-driver with

the variable speed function compatible with external PWM signal.

With a few external parts, a highly-efficient and highly-silent variable

drive fan motor with low power consumption can be achieved. This

product is best suited for driving of the server requiring large air flow

and large current and the fan motor of consumer appliances.

Features

⇒ Low-saturation Drive Using External PMOS−NMOS Enables

High-efficiency Low Power-consumption Drive

⇒ Separately-excited Upper Direct PWM (f =30 kHz) Control

Method Ensures Highly Silent Speed Control

⇒ Chopper Type Current Limiting Made at Startup and during Lock

⇒ Reactive Current before Phase Changeover is Cut, Ensuring

Highly Silent and Low Power-consumption Drive

⇒ Minimum Speed can be Set by Setting the Resistance

Typical Applications

www.onsemi.com

SSOP16

CASE 565AM

MARKING DIAGRAM

XXXX = Specific Device Code

Y

= Year

M

= Month

DDD = Additional Traceability Data

XXXXXXXXXX

YMDDD

PIN ASSIGNMENT

OUT1P

OUT1N

SGND

5VREG

S−S

CT

IN+

IN−

16

9

OUT2P

OUT2N

SENSE

RMI

VTH

CPWM

RD

1

8

(Top View)

See detailed ordering and shipping information on page 9 of

this data sheet.

ORDERING INFORMATION