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
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MARKING
DIAGRAMS
PDIP−8
N SUFFIX
CASE 626
1
1
MC33039P
AWL
YYWWG
•
Digital Detection of Each Input Transition for Improved Low Speed
•
•
•
•
•
Motor Operation
TTL Compatible Inputs With Hysteresis
Operation Down to 5.5 V for Direct Powering from MC33035
Reference
Internal Shunt Regulator Allows Operation from a Non−Regulated
Voltage Source
Inverter Output for Easy Conversion between 60°/300° and
120°/240° Sensor Phasing Conventions
Pb−Free Packages are Available
1
SOIC−8
D SUFFIX
CASE 751
1
A
WL, L
YY, Y
WW, W
G or
G
33039
ALYW
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
φ
C
1
Inputs
R
T
V
CC
φ
A
4
8
6
+
20 k
Delay
To Rotor
Position
Sensors
φ
B
2
Delay
1
Delay
S Q
R
+
+
−
0.3 V
R
2R
+
−
15 k
5
f
out
C
T
8
V
CC
7
GND
6
R
T
/C
T
5
f
out
φ
B
2
φ
A
3
φ
A
4
(Top View)
+
+
φ
A
3
8.25 V
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
φ
C
7
GND
Representative Block Diagram
©
Semiconductor Components Industries, LLC, 2006
1
April, 2006 − Rev. 5
Publication Order Number:
MC33039/D
ONSEMI [ ON SEMICONDUCTOR ]
