BRUSHLESS DC MOTOR CONTROLLER
FSP33035
FEATURES
10V 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
Top driver output current not more than 50mA
Bottom driver output current not more than 100mA
SOP24L and PDIP24L Packages
GENERAL DESCRIPTION
The FSP33035 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 FSP33035 is designed to
operate with electrical sensor phasings of 60°/300° or
120°/240°, and can also efficiently control brush DC
motors.
PIN CONFIGURATION
1/28
2007-3-16
FOSLINK [ FOSLINK SEMICONDUCTOR CO.,LTD ]
