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.
http://onsemi.com
P SUFFIX
PLASTIC PACKAGE
CASE 724
24
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.
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DW SUFFIX
PLASTIC PACKAGE
CASE 751E
24
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.
(SO−24L)
1
PIN CONNECTIONS
Features
Top Drive
Output
C
B
1
2
3
4
24
23
22
21
20
19
18
17
16
15
• 10 to 30 V Operation
• Undervoltage Lockout
• 6.25 V Reference Capable of Supplying Sensor Power
• Fully Accessible Error Amplifier for Closed Loop Servo
T
T
A
T
Brake
Fwd/Rev
60°/120° Select
S
A
A
B
Applications
Bottom
Drive
Outputs
Sensor
Inputs
• High Current Drivers Can Control External 3−Phase MOSFET
5
6
S
S
B
B
B
Bridge
C
V
C
B
• 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
7
Output Enable
C
Reference Output
8
V
CC
Current Sense
Noninverting Input
Gnd
9
Current Sense
Inverting Input
10
Oscillator
Error Amp
Noninverting Input
Error Amp
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
11
12
14
13
Fault Output
Error Amp Out/
PWM Input
Inverting Input
• Pb−Free Packages are Available
(Top View)
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, 2004
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Publication Order Number:
April, 2004 − Rev. 7
MC33035/D