© Semiconductor Components Industries, LLC, 2006

April, 2006 − Rev. 5

1

Publication Order Number:

MC33039/D

MC33039, NCV33039

Closed Loop Brushless

Motor Adapter

The MC33039 is a high performance closed−loop speed control

adapter specifically designed for use in brushless DC motor control

systems. Implementation will allow precise speed regulation without

the need for a magnetic or optical tachometer. This device contains

three input buffers each with hysteresis for noise immunity, three

digital edge detectors, a programmable monostable, and an internal

shunt regulator. Also included is an inverter output for use in systems

that require conversion of sensor phasing. Although this device is

primarily intended for use with the MC33035 brushless motor

controller, it can be used cost effectively in many other closed−loop

speed control applications.

Features

Motor Operation

Reference

Voltage Source

120

°/240° Sensor Phasing Conventions

Representative Block Diagram

15 k

−

+

To Rotor

Position

Sensors

7

GND

4

+

20 k

0.3 V

+

−

+

8.25 V

8

5

2R

R

+

R

Delay

Q

S

1

6

3

2

Delay

Delay

+

http://onsemi.com

MARKING

DIAGRAMS

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

G or

G = Pb−Free Package

1

1

1

PDIP−8

N SUFFIX

CASE 626

MC33039P

AWL

YYWWG

SOIC−8

D SUFFIX

CASE 751

PIN CONNECTIONS

GND

Inputs

4

3

2

8

7

6

5

(Top View)

See detailed ordering and shipping information in the package

dimensions section on page 6 of this data sheet.

ORDERING INFORMATION

33039

ALYW

G

1