ADJUSTABLE-SPEED SINGLE-PHASE FULL-WAVE PRE-DRIVER FOR MOTOR

AM4967

Data Sheet

1

Oct. 2008 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

General Description

The AM4967 is a single-coil, single-phase motor pre-

driver designed by bipolar process. Its rotation speed

can be controlled through an external PWM. This IC

requires few external components and has the merit of

high efficiency which make it suitable for use in great

air volume, large current and high voltage applications.

The AM4967 is available in SSOP-16 package.

Features

·

Single-phase Full-wave Pre-drive

·

Rotation Speed Control via External PWM

·

Maximum Operating Current Limit

·

Linear Start Function for Reducing Large Current

Impulse at the Moment of Turn-on

·

Minimum Rotation Speed Setting

·

Lock Protection and Auto Start Function

·

Rotation Speed Indication

·

Over Temperature Protection

Application

·

CPU and OA (Office Automation) Cooler Fan

·

Brushless DC Motor

Figure 1. Package Type of AM4967

SSOP-16