CMD1668M,CMD1667M

Two-Phase Unipolar Drive Brushless Motor Drivers

* All specs and applications shown above subject to change without prior notice.

1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU ,

TAOYUAN, TAIWAN

Email: server@ceramate.com.tw

Tel:886-3-3214525

Http: www.ceramate.com.tw

Fax:886-3-3521052

Page 1 of 9

Rev 1.0 Aug. 23,2004

Overview

The CMD1668M Series are 2-phase unipolar drive brushless

motor drivers that feature a wide usable voltage range and

a minimal number of required external components. They

also support the formation of motor lock protection and

automatic recovery circuits.

Functions and Features

• Output protection Zener diodes with variable breakdown

voltages

— When the Z1 and Z2 pins are open:

— An external Zener diode can be connected between

• Can support both 12-V and 24-V power supplies by

changing an external resistor.

• Hall elements can be connected directly.

• 1.5-A output current output transistors built in

• Built-in rotation detection function that outputs low

when driven and high when stopped (CMD1668M)

• FG signal function that sets FG high when IN- is low,

and sets FG low when IN- is high (CMD1667M)

• Motor lock protection and automatic recovery functions

built in

• Thermal shutdown function

Package Dimensions

unit: mm

1

14

7

8

8.0

0.15

1.0 1.0

0.35

SOP-14

[CMD1668M, 1667M]