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LB1975

3-phase Brushless Motor Driver

ON Semiconductor 

Ordering number : EN6087B

LB1975

Monolithic Digital IC

For Fan Motor

3-phase Brushless Motor Driver

http://onsemi.com

Overview

The LB1975 is a 3-phase brushless motor driver IC suited for use in direct PWM driving of DC fan motors for air

conditioners, water heaters, and other similar equipment. Since a shunt regulator circuit is built in, single power supply

operation sharing the same power supply for the motor is supported.

Features

• Withstand voltage 46V, output current 2.5A

• Direct PWM drive output

• 3 built-in output top-side diodes

• Built-in current limiter

• Built-in FG output circuit

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter

Supply voltage

Output current

Maximum input current

Allowable power dissipation

Operating temperature

Storage temperature

Symbol

VCC max

VM max

IO max

IREG max

Pd max1

Pd max2

Topr

Tstg

Conditions

VREG pin

Independent IC

With infinite hear sink

Ratings

Unit

7

V

46

V

2.5

A

10

mA

3

W

20

W

-20 to +100

°C

-55 to +150

°C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating

Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.

Semiconductor Components Industries, LLC, 2013

May, 2013

D1708 MS / 21003AS (OT) / 52199RM (KI) No.6087-1/10

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