MC33033 Datasheet | onsemi

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 mutation sequencing, temperature pensated reference capable of supplying sensor power, frequency programmable sawtooth oscillator, fully accessible error amplifier, pulse width modulator parator, 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 - 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 Unique Site and Control Change Requirements; AEC- Q100 Qualified and PPAP Capable - Pb- Free Packages are Available http://onsemi. PDIP- 20 P SUFFIX CASE 738 SO- 20L DW SUFFIX CASE 751D 20 1 20 1 PIN CONNECTIONS Top Drive Output BT 1 AT 2 Fwd/Rev 3 Sensor Inputs SA 4 SB...