MC33035, NCV33035
Brushless DC
Motor Controller
The MC33035 is a high performance second generation monolithic
brushless DC motor controller containing all of the active functions
required to implement a full featured open loop, three or four phase
motor control system. This device consists of a rotor position decoder
for proper commutation sequencing, temperature compensated
reference capable of supplying sensor power, frequency
programmable sawtooth oscillator, three open collector top drivers,
and three high current totem pole bottom drivers ideally suited for
driving power MOSFETs.
Also included are protective features consisting of undervoltage
lockout, cycle−by−cycle current limiting with a selectable time
delayed latched shutdown mode, internal thermal shutdown, and a
unique fault output that can be interfaced into microprocessor
controlled systems.
Typical motor control functions include open loop speed, forward or
reverse direction, run enable, and dynamic braking. The MC33035 is
designed to operate with electrical sensor phasings of 60°/300° or
120°/240°, and can also efficiently control brush DC motors.
Features
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P SUFFIX
PLASTIC PACKAGE
CASE 724
24
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
(SO−24L)
24
1
PIN CONNECTIONS
Top Drive
Output
B
T
1
A
T
2
Fwd/Rev
S
A
Sensor
Inputs
S
B
S
C
Output Enable
Reference Output
Current Sense
Noninverting Input
3
4
5
6
7
8
9
24 C
T
23 Brake
22 60°/120° Select
21 A
B
20 B
B
19 C
B
18 V
C
17 V
CC
16 Gnd
15
Current Sense
Inverting Input
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
Pinned−Out Current Sense Reference
Internal Thermal Shutdown
Selectable 60°/300° or 120°/240° Sensor Phasings
Can 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
Oscillator 10
Error Amp
11
Noninverting Input
Error Amp
Inverting Input 12
(Top View)
14 Fault Output
13
Error Amp Out/
PWM Input
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 27 of this data sheet.
©
Semiconductor Components Industries, LLC, 2006
1
April, 2006 − Rev. 8
Publication Order Number:
MC33035/D
ONSEMI [ ON SEMICONDUCTOR ]
