MC33033, NCV33033
Brushless DC
Motor Controller
The MC33033 is a high performance second generation, limited
feature, monolithic brushless dc motor controller which has evolved
from ON Semiconductor’s full featured MC33034 and MC33035
controllers. It contains all of the active functions required for the
implementation of open loop, three or four phase motor control. The
device consists of a rotor position decoder for proper commutation
sequencing, temperature compensated reference capable of supplying
sensor power, frequency programmable sawtooth oscillator, fully
accessible error amplifier, pulse width modulator comparator, three
open collector top drivers, and three high current totem pole bottom
drivers ideally suited for driving power MOSFETs. Unlike its
predecessors, it does not feature separate drive circuit supply and
ground pins, brake input, or fault output signal.
Included in the MC33033 are protective features consisting of
undervoltage lockout, cycle−by−cycle current limiting with a
selectable time delayed latched shutdown mode, and internal thermal
shutdown.
Typical motor control functions include open loop speed, forward or
reverse direction, and run enable. The MC33033 is designed to operate
brushless motors with electrical sensor phasings of 60°/300° or
120°/240°, and can also efficiently control brush dc motors.
Features
http://onsemi.com
PDIP−20
P SUFFIX
CASE 738
20
1
SO−20L
DW SUFFIX
CASE 751D
20
1
PIN CONNECTIONS
Top Drive
Output
B
T
1
A
T
2
Fwd/Rev
S
A
Sensor
Inputs
S
B
S
C
Reference Output
Oscillator
3
4
5
6
7
8
20 C
T
19 Output Enable
18 60°/120° Select
17 A
B
16 B
B
15 C
B
14 V
CC
13 Gnd
12 Current Sense
Non Inverting Input
11 Error Amp Out/
PWM Input
(Top View)
Bottom
Drive
Outputs
•
•
•
•
•
•
•
•
•
•
•
10 to 30 V Operation
Undervoltage Lockout
6.25 V Reference Capable of Supplying Sensor Power
Fully Accessible Error Amplifier for Closed Loop Servo
Applications
High Current Drivers Can Control External 3−Phase MOSFET
Bridge
Cycle−By−Cycle Current Limiting
Internal Thermal Shutdown
Selectable 60°/300° or 120°/240° Sensor Phasings
Also Efficiently Control Brush DC Motors with External MOSFET
H−Bridge
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
Pb−Free Packages are Available
Error Amp
9
Non Inverting Input
Error Amp 10
Inverting Input
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 25 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 25 of this data sheet.
©
Semiconductor Components Industries, LLC, 2007
1
January, 2007 − Rev. 9
Publication Order Number:
MC33033/D
ONSEMI [ ON SEMICONDUCTOR ]
