TECHNICAL DATA

2011, February, Rev. 01

The IL33035 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

• 10 to 30 V Operation

• Undervoltage Lockout

• 6.25V 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

IL33035